10515 lines
288 KiB
JavaScript
10515 lines
288 KiB
JavaScript
'use strict';
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/* jshint ignore:start */
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function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
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var jsExtend = require('js-extend');
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var jsExtend__default = _interopDefault(jsExtend);
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var debug = _interopDefault(require('debug'));
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var inherits = _interopDefault(require('inherits'));
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var lie = _interopDefault(require('lie'));
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var pouchdbCollections = require('pouchdb-collections');
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var getArguments = _interopDefault(require('argsarray'));
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var events = require('events');
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var scopedEval = _interopDefault(require('scope-eval'));
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var pouchCollate = require('pouchdb-collate');
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var pouchCollate__default = _interopDefault(pouchCollate);
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var Md5 = _interopDefault(require('spark-md5'));
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var vuvuzela = _interopDefault(require('vuvuzela'));
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/* istanbul ignore next */
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var PouchPromise = typeof Promise === 'function' ? Promise : lie;
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// like underscore/lodash _.pick()
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function pick(obj, arr) {
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var res = {};
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for (var i = 0, len = arr.length; i < len; i++) {
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var prop = arr[i];
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if (prop in obj) {
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res[prop] = obj[prop];
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}
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}
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return res;
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}
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function isBinaryObject(object) {
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return object instanceof ArrayBuffer ||
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(typeof Blob !== 'undefined' && object instanceof Blob);
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}
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function cloneArrayBuffer(buff) {
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if (typeof buff.slice === 'function') {
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return buff.slice(0);
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}
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// IE10-11 slice() polyfill
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var target = new ArrayBuffer(buff.byteLength);
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var targetArray = new Uint8Array(target);
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var sourceArray = new Uint8Array(buff);
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targetArray.set(sourceArray);
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return target;
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}
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function cloneBinaryObject(object) {
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if (object instanceof ArrayBuffer) {
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return cloneArrayBuffer(object);
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}
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var size = object.size;
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var type = object.type;
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// Blob
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if (typeof object.slice === 'function') {
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return object.slice(0, size, type);
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}
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// PhantomJS slice() replacement
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return object.webkitSlice(0, size, type);
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}
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function clone(object) {
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var newObject;
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var i;
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var len;
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if (!object || typeof object !== 'object') {
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return object;
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}
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if (Array.isArray(object)) {
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newObject = [];
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for (i = 0, len = object.length; i < len; i++) {
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newObject[i] = clone(object[i]);
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}
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return newObject;
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}
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// special case: to avoid inconsistencies between IndexedDB
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// and other backends, we automatically stringify Dates
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if (object instanceof Date) {
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return object.toISOString();
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}
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if (isBinaryObject(object)) {
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return cloneBinaryObject(object);
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}
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newObject = {};
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for (i in object) {
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if (Object.prototype.hasOwnProperty.call(object, i)) {
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var value = clone(object[i]);
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if (typeof value !== 'undefined') {
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newObject[i] = value;
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}
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}
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}
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return newObject;
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}
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function once(fun) {
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var called = false;
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return getArguments(function (args) {
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/* istanbul ignore if */
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if (called) {
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// this is a smoke test and should never actually happen
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throw new Error('once called more than once');
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} else {
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called = true;
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fun.apply(this, args);
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}
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});
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}
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function toPromise(func) {
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//create the function we will be returning
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return getArguments(function (args) {
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// Clone arguments
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args = clone(args);
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var self = this;
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var tempCB =
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(typeof args[args.length - 1] === 'function') ? args.pop() : false;
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// if the last argument is a function, assume its a callback
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var usedCB;
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if (tempCB) {
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// if it was a callback, create a new callback which calls it,
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// but do so async so we don't trap any errors
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usedCB = function (err, resp) {
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process.nextTick(function () {
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tempCB(err, resp);
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});
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};
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}
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var promise = new PouchPromise(function (fulfill, reject) {
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var resp;
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try {
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var callback = once(function (err, mesg) {
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if (err) {
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reject(err);
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} else {
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fulfill(mesg);
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}
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});
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// create a callback for this invocation
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// apply the function in the orig context
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args.push(callback);
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resp = func.apply(self, args);
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if (resp && typeof resp.then === 'function') {
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fulfill(resp);
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}
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} catch (e) {
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reject(e);
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}
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});
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// if there is a callback, call it back
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if (usedCB) {
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promise.then(function (result) {
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usedCB(null, result);
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}, usedCB);
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}
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return promise;
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});
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}
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var log = debug('pouchdb:api');
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function adapterFun(name, callback) {
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function logApiCall(self, name, args) {
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/* istanbul ignore if */
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if (log.enabled) {
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var logArgs = [self._db_name, name];
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for (var i = 0; i < args.length - 1; i++) {
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logArgs.push(args[i]);
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}
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log.apply(null, logArgs);
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// override the callback itself to log the response
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var origCallback = args[args.length - 1];
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args[args.length - 1] = function (err, res) {
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var responseArgs = [self._db_name, name];
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responseArgs = responseArgs.concat(
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err ? ['error', err] : ['success', res]
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);
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log.apply(null, responseArgs);
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origCallback(err, res);
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};
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}
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}
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return toPromise(getArguments(function (args) {
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if (this._closed) {
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return PouchPromise.reject(new Error('database is closed'));
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}
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if (this._destroyed) {
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return PouchPromise.reject(new Error('database is destroyed'));
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}
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var self = this;
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logApiCall(self, name, args);
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if (!this.taskqueue.isReady) {
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return new PouchPromise(function (fulfill, reject) {
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self.taskqueue.addTask(function (failed) {
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if (failed) {
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reject(failed);
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} else {
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fulfill(self[name].apply(self, args));
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}
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});
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});
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}
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return callback.apply(this, args);
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}));
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}
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// this is essentially the "update sugar" function from daleharvey/pouchdb#1388
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// the diffFun tells us what delta to apply to the doc. it either returns
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// the doc, or false if it doesn't need to do an update after all
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function upsert(db, docId, diffFun) {
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return new PouchPromise(function (fulfill, reject) {
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db.get(docId, function (err, doc) {
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if (err) {
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/* istanbul ignore next */
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if (err.status !== 404) {
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return reject(err);
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}
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doc = {};
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}
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// the user might change the _rev, so save it for posterity
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var docRev = doc._rev;
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var newDoc = diffFun(doc);
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if (!newDoc) {
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// if the diffFun returns falsy, we short-circuit as
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// an optimization
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return fulfill({updated: false, rev: docRev});
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}
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// users aren't allowed to modify these values,
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// so reset them here
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newDoc._id = docId;
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newDoc._rev = docRev;
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fulfill(tryAndPut(db, newDoc, diffFun));
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});
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});
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}
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function tryAndPut(db, doc, diffFun) {
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return db.put(doc).then(function (res) {
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return {
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updated: true,
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rev: res.rev
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};
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}, function (err) {
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/* istanbul ignore next */
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if (err.status !== 409) {
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throw err;
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}
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return upsert(db, doc._id, diffFun);
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});
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}
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// We fetch all leafs of the revision tree, and sort them based on tree length
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// and whether they were deleted, undeleted documents with the longest revision
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// tree (most edits) win
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// The final sort algorithm is slightly documented in a sidebar here:
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// http://guide.couchdb.org/draft/conflicts.html
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function winningRev(metadata) {
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var winningId;
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var winningPos;
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var winningDeleted;
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var toVisit = metadata.rev_tree.slice();
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var node;
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while ((node = toVisit.pop())) {
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var tree = node.ids;
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var branches = tree[2];
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var pos = node.pos;
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if (branches.length) { // non-leaf
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for (var i = 0, len = branches.length; i < len; i++) {
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toVisit.push({pos: pos + 1, ids: branches[i]});
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}
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continue;
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}
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var deleted = !!tree[1].deleted;
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var id = tree[0];
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// sort by deleted, then pos, then id
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if (!winningId || (winningDeleted !== deleted ? winningDeleted :
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winningPos !== pos ? winningPos < pos : winningId < id)) {
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winningId = id;
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winningPos = pos;
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winningDeleted = deleted;
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}
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}
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return winningPos + '-' + winningId;
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}
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function getTrees(node) {
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return node.ids;
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}
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// check if a specific revision of a doc has been deleted
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// - metadata: the metadata object from the doc store
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// - rev: (optional) the revision to check. defaults to winning revision
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function isDeleted(metadata, rev) {
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if (!rev) {
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rev = winningRev(metadata);
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}
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var id = rev.substring(rev.indexOf('-') + 1);
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var toVisit = metadata.rev_tree.map(getTrees);
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var tree;
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while ((tree = toVisit.pop())) {
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if (tree[0] === id) {
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return !!tree[1].deleted;
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}
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toVisit = toVisit.concat(tree[2]);
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}
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}
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function evalFilter(input) {
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return scopedEval('return ' + input + ';', {});
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}
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function evalView(input) {
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/* jshint evil:true */
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return new Function('doc', [
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'var emitted = false;',
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'var emit = function (a, b) {',
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' emitted = true;',
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'};',
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'var view = ' + input + ';',
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'view(doc);',
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'if (emitted) {',
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' return true;',
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'}'
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].join('\n'));
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}
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function parseDesignDocFunctionName(s) {
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if (!s) {
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return null;
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}
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var parts = s.split('/');
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if (parts.length === 2) {
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return parts;
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}
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if (parts.length === 1) {
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return [s, s];
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}
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return null;
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}
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function normalizeDesignDocFunctionName(s) {
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var normalized = parseDesignDocFunctionName(s);
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return normalized ? normalized.join('/') : null;
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}
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// Pretty much all below can be combined into a higher order function to
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// traverse revisions
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// The return value from the callback will be passed as context to all
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// children of that node
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function traverseRevTree(revs, callback) {
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var toVisit = revs.slice();
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var node;
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while ((node = toVisit.pop())) {
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var pos = node.pos;
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var tree = node.ids;
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var branches = tree[2];
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var newCtx =
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callback(branches.length === 0, pos, tree[0], node.ctx, tree[1]);
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for (var i = 0, len = branches.length; i < len; i++) {
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toVisit.push({pos: pos + 1, ids: branches[i], ctx: newCtx});
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}
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}
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}
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function sortByPos(a, b) {
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return a.pos - b.pos;
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}
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function collectLeaves(revs) {
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var leaves = [];
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traverseRevTree(revs, function (isLeaf, pos, id, acc, opts) {
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if (isLeaf) {
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leaves.push({rev: pos + "-" + id, pos: pos, opts: opts});
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}
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});
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leaves.sort(sortByPos).reverse();
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for (var i = 0, len = leaves.length; i < len; i++) {
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delete leaves[i].pos;
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}
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return leaves;
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}
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// returns revs of all conflicts that is leaves such that
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// 1. are not deleted and
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// 2. are different than winning revision
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function collectConflicts(metadata) {
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var win = winningRev(metadata);
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var leaves = collectLeaves(metadata.rev_tree);
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var conflicts = [];
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for (var i = 0, len = leaves.length; i < len; i++) {
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var leaf = leaves[i];
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if (leaf.rev !== win && !leaf.opts.deleted) {
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conflicts.push(leaf.rev);
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}
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}
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return conflicts;
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}
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inherits(PouchError, Error);
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function PouchError(opts) {
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Error.call(this, opts.reason);
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this.status = opts.status;
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this.name = opts.error;
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this.message = opts.reason;
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this.error = true;
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}
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PouchError.prototype.toString = function () {
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return JSON.stringify({
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status: this.status,
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name: this.name,
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message: this.message,
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reason: this.reason
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});
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};
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var UNAUTHORIZED = new PouchError({
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status: 401,
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error: 'unauthorized',
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reason: "Name or password is incorrect."
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});
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var MISSING_BULK_DOCS = new PouchError({
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status: 400,
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error: 'bad_request',
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reason: "Missing JSON list of 'docs'"
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});
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var MISSING_DOC = new PouchError({
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status: 404,
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error: 'not_found',
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reason: 'missing'
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});
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var REV_CONFLICT = new PouchError({
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status: 409,
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error: 'conflict',
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reason: 'Document update conflict'
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});
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var INVALID_ID = new PouchError({
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status: 400,
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error: 'invalid_id',
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reason: '_id field must contain a string'
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});
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var MISSING_ID = new PouchError({
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status: 412,
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error: 'missing_id',
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reason: '_id is required for puts'
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});
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var RESERVED_ID = new PouchError({
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status: 400,
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error: 'bad_request',
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reason: 'Only reserved document ids may start with underscore.'
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});
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var NOT_OPEN = new PouchError({
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status: 412,
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error: 'precondition_failed',
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reason: 'Database not open'
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});
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var UNKNOWN_ERROR = new PouchError({
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status: 500,
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error: 'unknown_error',
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reason: 'Database encountered an unknown error'
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});
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var BAD_ARG = new PouchError({
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status: 500,
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error: 'badarg',
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reason: 'Some query argument is invalid'
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});
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var INVALID_REQUEST = new PouchError({
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status: 400,
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error: 'invalid_request',
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reason: 'Request was invalid'
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});
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var QUERY_PARSE_ERROR = new PouchError({
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status: 400,
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error: 'query_parse_error',
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reason: 'Some query parameter is invalid'
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});
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var DOC_VALIDATION = new PouchError({
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status: 500,
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error: 'doc_validation',
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reason: 'Bad special document member'
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});
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var BAD_REQUEST = new PouchError({
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status: 400,
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error: 'bad_request',
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reason: 'Something wrong with the request'
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});
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var NOT_AN_OBJECT = new PouchError({
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status: 400,
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error: 'bad_request',
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reason: 'Document must be a JSON object'
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});
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var DB_MISSING = new PouchError({
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status: 404,
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error: 'not_found',
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reason: 'Database not found'
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});
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var IDB_ERROR = new PouchError({
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status: 500,
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error: 'indexed_db_went_bad',
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reason: 'unknown'
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});
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var WSQ_ERROR = new PouchError({
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status: 500,
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error: 'web_sql_went_bad',
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reason: 'unknown'
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});
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var LDB_ERROR = new PouchError({
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status: 500,
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error: 'levelDB_went_went_bad',
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reason: 'unknown'
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});
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var FORBIDDEN = new PouchError({
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status: 403,
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error: 'forbidden',
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reason: 'Forbidden by design doc validate_doc_update function'
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});
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var INVALID_REV = new PouchError({
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status: 400,
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error: 'bad_request',
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reason: 'Invalid rev format'
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});
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var FILE_EXISTS = new PouchError({
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status: 412,
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error: 'file_exists',
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reason: 'The database could not be created, the file already exists.'
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});
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var MISSING_STUB = new PouchError({
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status: 412,
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error: 'missing_stub'
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});
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var INVALID_URL = new PouchError({
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status: 413,
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error: 'invalid_url',
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reason: 'Provided URL is invalid'
|
|
});
|
|
|
|
var allErrors = {
|
|
UNAUTHORIZED: UNAUTHORIZED,
|
|
MISSING_BULK_DOCS: MISSING_BULK_DOCS,
|
|
MISSING_DOC: MISSING_DOC,
|
|
REV_CONFLICT: REV_CONFLICT,
|
|
INVALID_ID: INVALID_ID,
|
|
MISSING_ID: MISSING_ID,
|
|
RESERVED_ID: RESERVED_ID,
|
|
NOT_OPEN: NOT_OPEN,
|
|
UNKNOWN_ERROR: UNKNOWN_ERROR,
|
|
BAD_ARG: BAD_ARG,
|
|
INVALID_REQUEST: INVALID_REQUEST,
|
|
QUERY_PARSE_ERROR: QUERY_PARSE_ERROR,
|
|
DOC_VALIDATION: DOC_VALIDATION,
|
|
BAD_REQUEST: BAD_REQUEST,
|
|
NOT_AN_OBJECT: NOT_AN_OBJECT,
|
|
DB_MISSING: DB_MISSING,
|
|
WSQ_ERROR: WSQ_ERROR,
|
|
LDB_ERROR: LDB_ERROR,
|
|
FORBIDDEN: FORBIDDEN,
|
|
INVALID_REV: INVALID_REV,
|
|
FILE_EXISTS: FILE_EXISTS,
|
|
MISSING_STUB: MISSING_STUB,
|
|
IDB_ERROR: IDB_ERROR,
|
|
INVALID_URL: INVALID_URL
|
|
};
|
|
|
|
function createError(error, reason, name) {
|
|
function CustomPouchError(reason) {
|
|
// inherit error properties from our parent error manually
|
|
// so as to allow proper JSON parsing.
|
|
for (var p in error) {
|
|
if (typeof error[p] !== 'function') {
|
|
this[p] = error[p];
|
|
}
|
|
}
|
|
if (name !== undefined) {
|
|
this.name = name;
|
|
}
|
|
if (reason !== undefined) {
|
|
this.reason = reason;
|
|
}
|
|
}
|
|
CustomPouchError.prototype = PouchError.prototype;
|
|
return new CustomPouchError(reason);
|
|
}
|
|
|
|
// Find one of the errors defined above based on the value
|
|
// of the specified property.
|
|
// If reason is provided prefer the error matching that reason.
|
|
// This is for differentiating between errors with the same name and status,
|
|
// eg, bad_request.
|
|
var getErrorTypeByProp = function (prop, value, reason) {
|
|
var keys = Object.keys(allErrors).filter(function (key) {
|
|
var error = allErrors[key];
|
|
return typeof error !== 'function' && error[prop] === value;
|
|
});
|
|
var key = reason && keys.filter(function (key) {
|
|
var error = allErrors[key];
|
|
return error.message === reason;
|
|
})[0] || keys[0];
|
|
return (key) ? allErrors[key] : null;
|
|
};
|
|
|
|
function generateErrorFromResponse(res) {
|
|
var error, errName, errType, errMsg, errReason;
|
|
|
|
errName = (res.error === true && typeof res.name === 'string') ?
|
|
res.name :
|
|
res.error;
|
|
errReason = res.reason;
|
|
errType = getErrorTypeByProp('name', errName, errReason);
|
|
|
|
if (res.missing ||
|
|
errReason === 'missing' ||
|
|
errReason === 'deleted' ||
|
|
errName === 'not_found') {
|
|
errType = MISSING_DOC;
|
|
} else if (errName === 'doc_validation') {
|
|
// doc validation needs special treatment since
|
|
// res.reason depends on the validation error.
|
|
// see utils.js
|
|
errType = DOC_VALIDATION;
|
|
errMsg = errReason;
|
|
} else if (errName === 'bad_request' && errType.message !== errReason) {
|
|
// if bad_request error already found based on reason don't override.
|
|
errType = BAD_REQUEST;
|
|
}
|
|
|
|
// fallback to error by status or unknown error.
|
|
if (!errType) {
|
|
errType = getErrorTypeByProp('status', res.status, errReason) ||
|
|
UNKNOWN_ERROR;
|
|
}
|
|
|
|
error = createError(errType, errReason, errName);
|
|
|
|
// Keep custom message.
|
|
if (errMsg) {
|
|
error.message = errMsg;
|
|
}
|
|
|
|
// Keep helpful response data in our error messages.
|
|
if (res.id) {
|
|
error.id = res.id;
|
|
}
|
|
if (res.status) {
|
|
error.status = res.status;
|
|
}
|
|
if (res.missing) {
|
|
error.missing = res.missing;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
inherits(Changes, events.EventEmitter);
|
|
|
|
function Changes(db, opts, callback) {
|
|
events.EventEmitter.call(this);
|
|
var self = this;
|
|
this.db = db;
|
|
opts = opts ? clone(opts) : {};
|
|
var complete = opts.complete = once(function (err, resp) {
|
|
if (err) {
|
|
self.emit('error', err);
|
|
} else {
|
|
self.emit('complete', resp);
|
|
}
|
|
self.removeAllListeners();
|
|
db.removeListener('destroyed', onDestroy);
|
|
});
|
|
if (callback) {
|
|
self.on('complete', function (resp) {
|
|
callback(null, resp);
|
|
});
|
|
self.on('error', callback);
|
|
}
|
|
function onDestroy() {
|
|
self.cancel();
|
|
}
|
|
db.once('destroyed', onDestroy);
|
|
|
|
opts.onChange = function (change) {
|
|
/* istanbul ignore if */
|
|
if (opts.isCancelled) {
|
|
return;
|
|
}
|
|
self.emit('change', change);
|
|
if (self.startSeq && self.startSeq <= change.seq) {
|
|
self.startSeq = false;
|
|
}
|
|
};
|
|
|
|
var promise = new PouchPromise(function (fulfill, reject) {
|
|
opts.complete = function (err, res) {
|
|
if (err) {
|
|
reject(err);
|
|
} else {
|
|
fulfill(res);
|
|
}
|
|
};
|
|
});
|
|
self.once('cancel', function () {
|
|
db.removeListener('destroyed', onDestroy);
|
|
opts.complete(null, {status: 'cancelled'});
|
|
});
|
|
this.then = promise.then.bind(promise);
|
|
this['catch'] = promise['catch'].bind(promise);
|
|
this.then(function (result) {
|
|
complete(null, result);
|
|
}, complete);
|
|
|
|
|
|
|
|
if (!db.taskqueue.isReady) {
|
|
db.taskqueue.addTask(function () {
|
|
if (self.isCancelled) {
|
|
self.emit('cancel');
|
|
} else {
|
|
self.doChanges(opts);
|
|
}
|
|
});
|
|
} else {
|
|
self.doChanges(opts);
|
|
}
|
|
}
|
|
Changes.prototype.cancel = function () {
|
|
this.isCancelled = true;
|
|
if (this.db.taskqueue.isReady) {
|
|
this.emit('cancel');
|
|
}
|
|
};
|
|
function processChange(doc, metadata, opts) {
|
|
var changeList = [{rev: doc._rev}];
|
|
if (opts.style === 'all_docs') {
|
|
changeList = collectLeaves(metadata.rev_tree)
|
|
.map(function (x) { return {rev: x.rev}; });
|
|
}
|
|
var change = {
|
|
id: metadata.id,
|
|
changes: changeList,
|
|
doc: doc
|
|
};
|
|
|
|
if (isDeleted(metadata, doc._rev)) {
|
|
change.deleted = true;
|
|
}
|
|
if (opts.conflicts) {
|
|
change.doc._conflicts = collectConflicts(metadata);
|
|
if (!change.doc._conflicts.length) {
|
|
delete change.doc._conflicts;
|
|
}
|
|
}
|
|
return change;
|
|
}
|
|
|
|
Changes.prototype.doChanges = function (opts) {
|
|
var self = this;
|
|
var callback = opts.complete;
|
|
|
|
opts = clone(opts);
|
|
if ('live' in opts && !('continuous' in opts)) {
|
|
opts.continuous = opts.live;
|
|
}
|
|
opts.processChange = processChange;
|
|
|
|
if (opts.since === 'latest') {
|
|
opts.since = 'now';
|
|
}
|
|
if (!opts.since) {
|
|
opts.since = 0;
|
|
}
|
|
if (opts.since === 'now') {
|
|
this.db.info().then(function (info) {
|
|
/* istanbul ignore if */
|
|
if (self.isCancelled) {
|
|
callback(null, {status: 'cancelled'});
|
|
return;
|
|
}
|
|
opts.since = info.update_seq;
|
|
self.doChanges(opts);
|
|
}, callback);
|
|
return;
|
|
}
|
|
|
|
if (opts.continuous && opts.since !== 'now') {
|
|
this.db.info().then(function (info) {
|
|
self.startSeq = info.update_seq;
|
|
/* istanbul ignore next */
|
|
}, function (err) {
|
|
if (err.id === 'idbNull') {
|
|
// db closed before this returned thats ok
|
|
return;
|
|
}
|
|
throw err;
|
|
});
|
|
}
|
|
|
|
if (opts.filter && typeof opts.filter === 'string') {
|
|
if (opts.filter === '_view') {
|
|
opts.view = normalizeDesignDocFunctionName(opts.view);
|
|
} else {
|
|
opts.filter = normalizeDesignDocFunctionName(opts.filter);
|
|
}
|
|
|
|
if (this.db.type() !== 'http' && !opts.doc_ids) {
|
|
return this.filterChanges(opts);
|
|
}
|
|
}
|
|
|
|
if (!('descending' in opts)) {
|
|
opts.descending = false;
|
|
}
|
|
|
|
// 0 and 1 should return 1 document
|
|
opts.limit = opts.limit === 0 ? 1 : opts.limit;
|
|
opts.complete = callback;
|
|
var newPromise = this.db._changes(opts);
|
|
if (newPromise && typeof newPromise.cancel === 'function') {
|
|
var cancel = self.cancel;
|
|
self.cancel = getArguments(function (args) {
|
|
newPromise.cancel();
|
|
cancel.apply(this, args);
|
|
});
|
|
}
|
|
};
|
|
|
|
Changes.prototype.filterChanges = function (opts) {
|
|
var self = this;
|
|
var callback = opts.complete;
|
|
if (opts.filter === '_view') {
|
|
if (!opts.view || typeof opts.view !== 'string') {
|
|
var err = createError(BAD_REQUEST,
|
|
'`view` filter parameter not found or invalid.');
|
|
return callback(err);
|
|
}
|
|
// fetch a view from a design doc, make it behave like a filter
|
|
var viewName = parseDesignDocFunctionName(opts.view);
|
|
this.db.getView(viewName[0], viewName[1], function (err, view) {
|
|
/* istanbul ignore if */
|
|
if (self.isCancelled) {
|
|
return callback(null, {status: 'cancelled'});
|
|
}
|
|
/* istanbul ignore next */
|
|
if (err) {
|
|
return callback(generateErrorFromResponse(err));
|
|
}
|
|
if (!view.map) {
|
|
return callback(createError(MISSING_DOC));
|
|
}
|
|
opts.filter = evalView(view.map);
|
|
self.doChanges(opts);
|
|
});
|
|
} else {
|
|
// fetch a filter from a design doc
|
|
var filterName = parseDesignDocFunctionName(opts.filter);
|
|
if (!filterName) {
|
|
return self.doChanges(opts);
|
|
}
|
|
this.db.getFilter(filterName[0], filterName[1], function (err, filterFun) {
|
|
/* istanbul ignore if */
|
|
if (self.isCancelled) {
|
|
return callback(null, {status: 'cancelled'});
|
|
}
|
|
/* istanbul ignore next */
|
|
if (err) {
|
|
return callback(generateErrorFromResponse(err));
|
|
}
|
|
opts.filter = evalFilter(filterFun);
|
|
self.doChanges(opts);
|
|
});
|
|
}
|
|
};
|
|
|
|
// shim for P/CouchDB adapters that don't directly implement _bulk_get
|
|
function bulkGet(db, opts, callback) {
|
|
var requests = Array.isArray(opts) ? opts : opts.docs;
|
|
|
|
// consolidate into one request per doc if possible
|
|
var requestsById = {};
|
|
requests.forEach(function (request) {
|
|
if (request.id in requestsById) {
|
|
requestsById[request.id].push(request);
|
|
} else {
|
|
requestsById[request.id] = [request];
|
|
}
|
|
});
|
|
|
|
var numDocs = Object.keys(requestsById).length;
|
|
var numDone = 0;
|
|
var perDocResults = new Array(numDocs);
|
|
|
|
function collapseResults() {
|
|
var results = [];
|
|
perDocResults.forEach(function (res) {
|
|
res.docs.forEach(function (info) {
|
|
results.push({
|
|
id: res.id,
|
|
docs: [info]
|
|
});
|
|
});
|
|
});
|
|
callback(null, {results: results});
|
|
}
|
|
|
|
function checkDone() {
|
|
if (++numDone === numDocs) {
|
|
collapseResults();
|
|
}
|
|
}
|
|
|
|
function gotResult(i, id, docs) {
|
|
perDocResults[i] = {id: id, docs: docs};
|
|
checkDone();
|
|
}
|
|
|
|
Object.keys(requestsById).forEach(function (docId, i) {
|
|
|
|
var docRequests = requestsById[docId];
|
|
|
|
// just use the first request as the "template"
|
|
// TODO: The _bulk_get API allows for more subtle use cases than this,
|
|
// but for now it is unlikely that there will be a mix of different
|
|
// "atts_since" or "attachments" in the same request, since it's just
|
|
// replicate.js that is using this for the moment.
|
|
// Also, atts_since is aspirational, since we don't support it yet.
|
|
var docOpts = pick(docRequests[0], ['atts_since', 'attachments']);
|
|
docOpts.open_revs = docRequests.map(function (request) {
|
|
// rev is optional, open_revs disallowed
|
|
return request.rev;
|
|
});
|
|
|
|
// remove falsey / undefined revisions
|
|
docOpts.open_revs = docOpts.open_revs.filter(function (e) { return e; });
|
|
|
|
var formatResult = function (result) { return result; };
|
|
|
|
if (docOpts.open_revs.length === 0) {
|
|
delete docOpts.open_revs;
|
|
|
|
// when fetching only the "winning" leaf,
|
|
// transform the result so it looks like an open_revs
|
|
// request
|
|
formatResult = function (result) {
|
|
return [{
|
|
ok: result
|
|
}];
|
|
};
|
|
}
|
|
|
|
// globally-supplied options
|
|
['revs', 'attachments', 'binary', 'ajax'].forEach(function (param) {
|
|
if (param in opts) {
|
|
docOpts[param] = opts[param];
|
|
}
|
|
});
|
|
db.get(docId, docOpts, function (err, res) {
|
|
gotResult(i, docId, err ? [{error: err}] : formatResult(res));
|
|
});
|
|
});
|
|
}
|
|
|
|
function isLocalId(id) {
|
|
return (/^_local/).test(id);
|
|
}
|
|
|
|
// build up a list of all the paths to the leafs in this revision tree
|
|
function rootToLeaf(revs) {
|
|
var paths = [];
|
|
var toVisit = revs.slice();
|
|
var node;
|
|
while ((node = toVisit.pop())) {
|
|
var pos = node.pos;
|
|
var tree = node.ids;
|
|
var id = tree[0];
|
|
var opts = tree[1];
|
|
var branches = tree[2];
|
|
var isLeaf = branches.length === 0;
|
|
|
|
var history = node.history ? node.history.slice() : [];
|
|
history.push({id: id, opts: opts});
|
|
if (isLeaf) {
|
|
paths.push({pos: (pos + 1 - history.length), ids: history});
|
|
}
|
|
for (var i = 0, len = branches.length; i < len; i++) {
|
|
toVisit.push({pos: pos + 1, ids: branches[i], history: history});
|
|
}
|
|
}
|
|
return paths.reverse();
|
|
}
|
|
|
|
// BEGIN Math.uuid.js
|
|
|
|
/*!
|
|
Math.uuid.js (v1.4)
|
|
http://www.broofa.com
|
|
mailto:robert@broofa.com
|
|
|
|
Copyright (c) 2010 Robert Kieffer
|
|
Dual licensed under the MIT and GPL licenses.
|
|
*/
|
|
|
|
/*
|
|
* Generate a random uuid.
|
|
*
|
|
* USAGE: Math.uuid(length, radix)
|
|
* length - the desired number of characters
|
|
* radix - the number of allowable values for each character.
|
|
*
|
|
* EXAMPLES:
|
|
* // No arguments - returns RFC4122, version 4 ID
|
|
* >>> Math.uuid()
|
|
* "92329D39-6F5C-4520-ABFC-AAB64544E172"
|
|
*
|
|
* // One argument - returns ID of the specified length
|
|
* >>> Math.uuid(15) // 15 character ID (default base=62)
|
|
* "VcydxgltxrVZSTV"
|
|
*
|
|
* // Two arguments - returns ID of the specified length, and radix.
|
|
* // (Radix must be <= 62)
|
|
* >>> Math.uuid(8, 2) // 8 character ID (base=2)
|
|
* "01001010"
|
|
* >>> Math.uuid(8, 10) // 8 character ID (base=10)
|
|
* "47473046"
|
|
* >>> Math.uuid(8, 16) // 8 character ID (base=16)
|
|
* "098F4D35"
|
|
*/
|
|
var chars = (
|
|
'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
|
|
'abcdefghijklmnopqrstuvwxyz'
|
|
).split('');
|
|
function getValue(radix) {
|
|
return 0 | Math.random() * radix;
|
|
}
|
|
function uuid(len, radix) {
|
|
radix = radix || chars.length;
|
|
var out = '';
|
|
var i = -1;
|
|
|
|
if (len) {
|
|
// Compact form
|
|
while (++i < len) {
|
|
out += chars[getValue(radix)];
|
|
}
|
|
return out;
|
|
}
|
|
// rfc4122, version 4 form
|
|
// Fill in random data. At i==19 set the high bits of clock sequence as
|
|
// per rfc4122, sec. 4.1.5
|
|
while (++i < 36) {
|
|
switch (i) {
|
|
case 8:
|
|
case 13:
|
|
case 18:
|
|
case 23:
|
|
out += '-';
|
|
break;
|
|
case 19:
|
|
out += chars[(getValue(16) & 0x3) | 0x8];
|
|
break;
|
|
default:
|
|
out += chars[getValue(16)];
|
|
}
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
function toObject(array) {
|
|
return array.reduce(function (obj, item) {
|
|
obj[item] = true;
|
|
return obj;
|
|
}, {});
|
|
}
|
|
// List of top level reserved words for doc
|
|
var reservedWords = toObject([
|
|
'_id',
|
|
'_rev',
|
|
'_attachments',
|
|
'_deleted',
|
|
'_revisions',
|
|
'_revs_info',
|
|
'_conflicts',
|
|
'_deleted_conflicts',
|
|
'_local_seq',
|
|
'_rev_tree',
|
|
//replication documents
|
|
'_replication_id',
|
|
'_replication_state',
|
|
'_replication_state_time',
|
|
'_replication_state_reason',
|
|
'_replication_stats',
|
|
// Specific to Couchbase Sync Gateway
|
|
'_removed'
|
|
]);
|
|
|
|
// List of reserved words that should end up the document
|
|
var dataWords = toObject([
|
|
'_attachments',
|
|
//replication documents
|
|
'_replication_id',
|
|
'_replication_state',
|
|
'_replication_state_time',
|
|
'_replication_state_reason',
|
|
'_replication_stats'
|
|
]);
|
|
|
|
// Determine id an ID is valid
|
|
// - invalid IDs begin with an underescore that does not begin '_design' or
|
|
// '_local'
|
|
// - any other string value is a valid id
|
|
// Returns the specific error object for each case
|
|
function invalidIdError(id) {
|
|
var err;
|
|
if (!id) {
|
|
err = createError(MISSING_ID);
|
|
} else if (typeof id !== 'string') {
|
|
err = createError(INVALID_ID);
|
|
} else if (/^_/.test(id) && !(/^_(design|local)/).test(id)) {
|
|
err = createError(RESERVED_ID);
|
|
}
|
|
if (err) {
|
|
throw err;
|
|
}
|
|
}
|
|
|
|
function parseRevisionInfo(rev) {
|
|
if (!/^\d+\-./.test(rev)) {
|
|
return createError(INVALID_REV);
|
|
}
|
|
var idx = rev.indexOf('-');
|
|
var left = rev.substring(0, idx);
|
|
var right = rev.substring(idx + 1);
|
|
return {
|
|
prefix: parseInt(left, 10),
|
|
id: right
|
|
};
|
|
}
|
|
|
|
function makeRevTreeFromRevisions(revisions, opts) {
|
|
var pos = revisions.start - revisions.ids.length + 1;
|
|
|
|
var revisionIds = revisions.ids;
|
|
var ids = [revisionIds[0], opts, []];
|
|
|
|
for (var i = 1, len = revisionIds.length; i < len; i++) {
|
|
ids = [revisionIds[i], {status: 'missing'}, [ids]];
|
|
}
|
|
|
|
return [{
|
|
pos: pos,
|
|
ids: ids
|
|
}];
|
|
}
|
|
|
|
// Preprocess documents, parse their revisions, assign an id and a
|
|
// revision for new writes that are missing them, etc
|
|
function parseDoc(doc, newEdits) {
|
|
|
|
var nRevNum;
|
|
var newRevId;
|
|
var revInfo;
|
|
var opts = {status: 'available'};
|
|
if (doc._deleted) {
|
|
opts.deleted = true;
|
|
}
|
|
|
|
if (newEdits) {
|
|
if (!doc._id) {
|
|
doc._id = uuid();
|
|
}
|
|
newRevId = uuid(32, 16).toLowerCase();
|
|
if (doc._rev) {
|
|
revInfo = parseRevisionInfo(doc._rev);
|
|
if (revInfo.error) {
|
|
return revInfo;
|
|
}
|
|
doc._rev_tree = [{
|
|
pos: revInfo.prefix,
|
|
ids: [revInfo.id, {status: 'missing'}, [[newRevId, opts, []]]]
|
|
}];
|
|
nRevNum = revInfo.prefix + 1;
|
|
} else {
|
|
doc._rev_tree = [{
|
|
pos: 1,
|
|
ids : [newRevId, opts, []]
|
|
}];
|
|
nRevNum = 1;
|
|
}
|
|
} else {
|
|
if (doc._revisions) {
|
|
doc._rev_tree = makeRevTreeFromRevisions(doc._revisions, opts);
|
|
nRevNum = doc._revisions.start;
|
|
newRevId = doc._revisions.ids[0];
|
|
}
|
|
if (!doc._rev_tree) {
|
|
revInfo = parseRevisionInfo(doc._rev);
|
|
if (revInfo.error) {
|
|
return revInfo;
|
|
}
|
|
nRevNum = revInfo.prefix;
|
|
newRevId = revInfo.id;
|
|
doc._rev_tree = [{
|
|
pos: nRevNum,
|
|
ids: [newRevId, opts, []]
|
|
}];
|
|
}
|
|
}
|
|
|
|
invalidIdError(doc._id);
|
|
|
|
doc._rev = nRevNum + '-' + newRevId;
|
|
|
|
var result = {metadata : {}, data : {}};
|
|
for (var key in doc) {
|
|
/* istanbul ignore else */
|
|
if (Object.prototype.hasOwnProperty.call(doc, key)) {
|
|
var specialKey = key[0] === '_';
|
|
if (specialKey && !reservedWords[key]) {
|
|
var error = createError(DOC_VALIDATION, key);
|
|
error.message = DOC_VALIDATION.message + ': ' + key;
|
|
throw error;
|
|
} else if (specialKey && !dataWords[key]) {
|
|
result.metadata[key.slice(1)] = doc[key];
|
|
} else {
|
|
result.data[key] = doc[key];
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* A generic pouch adapter
|
|
*/
|
|
|
|
function compare(left, right) {
|
|
return left < right ? -1 : left > right ? 1 : 0;
|
|
}
|
|
|
|
// returns first element of arr satisfying callback predicate
|
|
function arrayFirst(arr, callback) {
|
|
for (var i = 0; i < arr.length; i++) {
|
|
if (callback(arr[i], i) === true) {
|
|
return arr[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Wrapper for functions that call the bulkdocs api with a single doc,
|
|
// if the first result is an error, return an error
|
|
function yankError(callback) {
|
|
return function (err, results) {
|
|
if (err || (results[0] && results[0].error)) {
|
|
callback(err || results[0]);
|
|
} else {
|
|
callback(null, results.length ? results[0] : results);
|
|
}
|
|
};
|
|
}
|
|
|
|
// clean docs given to us by the user
|
|
function cleanDocs(docs) {
|
|
for (var i = 0; i < docs.length; i++) {
|
|
var doc = docs[i];
|
|
if (doc._deleted) {
|
|
delete doc._attachments; // ignore atts for deleted docs
|
|
} else if (doc._attachments) {
|
|
// filter out extraneous keys from _attachments
|
|
var atts = Object.keys(doc._attachments);
|
|
for (var j = 0; j < atts.length; j++) {
|
|
var att = atts[j];
|
|
doc._attachments[att] = pick(doc._attachments[att],
|
|
['data', 'digest', 'content_type', 'length', 'revpos', 'stub']);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// compare two docs, first by _id then by _rev
|
|
function compareByIdThenRev(a, b) {
|
|
var idCompare = compare(a._id, b._id);
|
|
if (idCompare !== 0) {
|
|
return idCompare;
|
|
}
|
|
var aStart = a._revisions ? a._revisions.start : 0;
|
|
var bStart = b._revisions ? b._revisions.start : 0;
|
|
return compare(aStart, bStart);
|
|
}
|
|
|
|
// for every node in a revision tree computes its distance from the closest
|
|
// leaf
|
|
function computeHeight(revs) {
|
|
var height = {};
|
|
var edges = [];
|
|
traverseRevTree(revs, function (isLeaf, pos, id, prnt) {
|
|
var rev = pos + "-" + id;
|
|
if (isLeaf) {
|
|
height[rev] = 0;
|
|
}
|
|
if (prnt !== undefined) {
|
|
edges.push({from: prnt, to: rev});
|
|
}
|
|
return rev;
|
|
});
|
|
|
|
edges.reverse();
|
|
edges.forEach(function (edge) {
|
|
if (height[edge.from] === undefined) {
|
|
height[edge.from] = 1 + height[edge.to];
|
|
} else {
|
|
height[edge.from] = Math.min(height[edge.from], 1 + height[edge.to]);
|
|
}
|
|
});
|
|
return height;
|
|
}
|
|
|
|
function allDocsKeysQuery(api, opts, callback) {
|
|
var keys = ('limit' in opts) ?
|
|
opts.keys.slice(opts.skip, opts.limit + opts.skip) :
|
|
(opts.skip > 0) ? opts.keys.slice(opts.skip) : opts.keys;
|
|
if (opts.descending) {
|
|
keys.reverse();
|
|
}
|
|
if (!keys.length) {
|
|
return api._allDocs({limit: 0}, callback);
|
|
}
|
|
var finalResults = {
|
|
offset: opts.skip
|
|
};
|
|
return PouchPromise.all(keys.map(function (key) {
|
|
var subOpts = jsExtend.extend({key: key, deleted: 'ok'}, opts);
|
|
['limit', 'skip', 'keys'].forEach(function (optKey) {
|
|
delete subOpts[optKey];
|
|
});
|
|
return new PouchPromise(function (resolve, reject) {
|
|
api._allDocs(subOpts, function (err, res) {
|
|
/* istanbul ignore if */
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
finalResults.total_rows = res.total_rows;
|
|
resolve(res.rows[0] || {key: key, error: 'not_found'});
|
|
});
|
|
});
|
|
})).then(function (results) {
|
|
finalResults.rows = results;
|
|
return finalResults;
|
|
});
|
|
}
|
|
|
|
// all compaction is done in a queue, to avoid attaching
|
|
// too many listeners at once
|
|
function doNextCompaction(self) {
|
|
var task = self._compactionQueue[0];
|
|
var opts = task.opts;
|
|
var callback = task.callback;
|
|
self.get('_local/compaction').catch(function () {
|
|
return false;
|
|
}).then(function (doc) {
|
|
if (doc && doc.last_seq) {
|
|
opts.last_seq = doc.last_seq;
|
|
}
|
|
self._compact(opts, function (err, res) {
|
|
/* istanbul ignore if */
|
|
if (err) {
|
|
callback(err);
|
|
} else {
|
|
callback(null, res);
|
|
}
|
|
process.nextTick(function () {
|
|
self._compactionQueue.shift();
|
|
if (self._compactionQueue.length) {
|
|
doNextCompaction(self);
|
|
}
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
function attachmentNameError(name) {
|
|
if (name.charAt(0) === '_') {
|
|
return name + 'is not a valid attachment name, attachment ' +
|
|
'names cannot start with \'_\'';
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function cacheUpdateRequired(api, cache, designDocName, callback) {
|
|
cache.seq = cache.seq || 0;
|
|
var changesOpts = {
|
|
doc_ids: [ '_design/' + designDocName ],
|
|
limit: 1,
|
|
since: cache.seq
|
|
};
|
|
api.changes(changesOpts).then(function (res) {
|
|
var latestSeq = res.results && res.results.length && res.results[0].seq;
|
|
if (latestSeq && latestSeq > cache.seq) {
|
|
// invalidate the cache
|
|
cache.seq = latestSeq;
|
|
delete cache.promise;
|
|
}
|
|
callback();
|
|
}).catch(callback);
|
|
}
|
|
|
|
function getDesignDocCache(api, designDocName, callback) {
|
|
api._ddocCache = api._ddocCache || {};
|
|
api._ddocCache[designDocName] = api._ddocCache[designDocName] || {};
|
|
var cache = api._ddocCache[designDocName];
|
|
cacheUpdateRequired(api, cache, designDocName, function (err) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
if (!cache.promise) {
|
|
cache.promise = new PouchPromise(function (resolve, reject) {
|
|
api._get('_design/' + designDocName, {}, function (err, res) {
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
var cache = {};
|
|
['views', 'filters'].forEach(function (propertyName) {
|
|
cache[propertyName] = res.doc[propertyName];
|
|
});
|
|
resolve(cache);
|
|
});
|
|
});
|
|
}
|
|
cache.promise.then(function (cache) {
|
|
callback(null, cache);
|
|
}).catch(callback);
|
|
});
|
|
}
|
|
|
|
function getDesignDocProperty(api, designDocName, propertyName,
|
|
propertyElement, callback) {
|
|
getDesignDocCache(api, designDocName, function (err, designDoc) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
var element = designDoc[propertyName] &&
|
|
designDoc[propertyName][propertyElement];
|
|
if (!element) {
|
|
return callback(createError(MISSING_DOC));
|
|
}
|
|
callback(null, element);
|
|
});
|
|
}
|
|
|
|
inherits(AbstractPouchDB, events.EventEmitter);
|
|
|
|
function AbstractPouchDB() {
|
|
events.EventEmitter.call(this);
|
|
}
|
|
|
|
AbstractPouchDB.prototype.post =
|
|
adapterFun('post', function (doc, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
if (typeof doc !== 'object' || Array.isArray(doc)) {
|
|
return callback(createError(NOT_AN_OBJECT));
|
|
}
|
|
this.bulkDocs({docs: [doc]}, opts, yankError(callback));
|
|
});
|
|
|
|
AbstractPouchDB.prototype.put =
|
|
adapterFun('put', getArguments(function (args) {
|
|
var temp, temptype, opts, callback;
|
|
var doc = args.shift();
|
|
var id = '_id' in doc;
|
|
if (typeof doc !== 'object' || Array.isArray(doc)) {
|
|
callback = args.pop();
|
|
return callback(createError(NOT_AN_OBJECT));
|
|
}
|
|
|
|
/* eslint no-constant-condition: 0 */
|
|
while (true) {
|
|
temp = args.shift();
|
|
temptype = typeof temp;
|
|
if (temptype === "string" && !id) {
|
|
doc._id = temp;
|
|
id = true;
|
|
} else if (temptype === "string" && id && !('_rev' in doc)) {
|
|
doc._rev = temp;
|
|
} else if (temptype === "object") {
|
|
opts = temp;
|
|
} else if (temptype === "function") {
|
|
callback = temp;
|
|
}
|
|
if (!args.length) {
|
|
break;
|
|
}
|
|
}
|
|
opts = opts || {};
|
|
invalidIdError(doc._id);
|
|
if (isLocalId(doc._id) && typeof this._putLocal === 'function') {
|
|
if (doc._deleted) {
|
|
return this._removeLocal(doc, callback);
|
|
} else {
|
|
return this._putLocal(doc, callback);
|
|
}
|
|
}
|
|
this.bulkDocs({docs: [doc]}, opts, yankError(callback));
|
|
}));
|
|
|
|
AbstractPouchDB.prototype.putAttachment =
|
|
adapterFun('putAttachment', function (docId, attachmentId, rev,
|
|
blob, type) {
|
|
var api = this;
|
|
if (typeof type === 'function') {
|
|
type = blob;
|
|
blob = rev;
|
|
rev = null;
|
|
}
|
|
// Lets fix in https://github.com/pouchdb/pouchdb/issues/3267
|
|
/* istanbul ignore if */
|
|
if (typeof type === 'undefined') {
|
|
type = blob;
|
|
blob = rev;
|
|
rev = null;
|
|
}
|
|
|
|
function createAttachment(doc) {
|
|
var prevrevpos = '_rev' in doc ? parseInt(doc._rev, 10) : 0;
|
|
doc._attachments = doc._attachments || {};
|
|
doc._attachments[attachmentId] = {
|
|
content_type: type,
|
|
data: blob,
|
|
revpos: ++prevrevpos
|
|
};
|
|
return api.put(doc);
|
|
}
|
|
|
|
return api.get(docId).then(function (doc) {
|
|
if (doc._rev !== rev) {
|
|
throw createError(REV_CONFLICT);
|
|
}
|
|
|
|
return createAttachment(doc);
|
|
}, function (err) {
|
|
// create new doc
|
|
/* istanbul ignore else */
|
|
if (err.reason === MISSING_DOC.message) {
|
|
return createAttachment({_id: docId});
|
|
} else {
|
|
throw err;
|
|
}
|
|
});
|
|
});
|
|
|
|
AbstractPouchDB.prototype.removeAttachment =
|
|
adapterFun('removeAttachment', function (docId, attachmentId, rev,
|
|
callback) {
|
|
var self = this;
|
|
self.get(docId, function (err, obj) {
|
|
/* istanbul ignore if */
|
|
if (err) {
|
|
callback(err);
|
|
return;
|
|
}
|
|
if (obj._rev !== rev) {
|
|
callback(createError(REV_CONFLICT));
|
|
return;
|
|
}
|
|
/* istanbul ignore if */
|
|
if (!obj._attachments) {
|
|
return callback();
|
|
}
|
|
delete obj._attachments[attachmentId];
|
|
if (Object.keys(obj._attachments).length === 0) {
|
|
delete obj._attachments;
|
|
}
|
|
self.put(obj, callback);
|
|
});
|
|
});
|
|
|
|
AbstractPouchDB.prototype.remove =
|
|
adapterFun('remove', function (docOrId, optsOrRev, opts, callback) {
|
|
var doc;
|
|
if (typeof optsOrRev === 'string') {
|
|
// id, rev, opts, callback style
|
|
doc = {
|
|
_id: docOrId,
|
|
_rev: optsOrRev
|
|
};
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
} else {
|
|
// doc, opts, callback style
|
|
doc = docOrId;
|
|
if (typeof optsOrRev === 'function') {
|
|
callback = optsOrRev;
|
|
opts = {};
|
|
} else {
|
|
callback = opts;
|
|
opts = optsOrRev;
|
|
}
|
|
}
|
|
opts = opts || {};
|
|
opts.was_delete = true;
|
|
var newDoc = {_id: doc._id, _rev: (doc._rev || opts.rev)};
|
|
newDoc._deleted = true;
|
|
if (isLocalId(newDoc._id) && typeof this._removeLocal === 'function') {
|
|
return this._removeLocal(doc, callback);
|
|
}
|
|
this.bulkDocs({docs: [newDoc]}, opts, yankError(callback));
|
|
});
|
|
|
|
AbstractPouchDB.prototype.revsDiff =
|
|
adapterFun('revsDiff', function (req, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
var ids = Object.keys(req);
|
|
|
|
if (!ids.length) {
|
|
return callback(null, {});
|
|
}
|
|
|
|
var count = 0;
|
|
var missing = new pouchdbCollections.Map();
|
|
|
|
function addToMissing(id, revId) {
|
|
if (!missing.has(id)) {
|
|
missing.set(id, {missing: []});
|
|
}
|
|
missing.get(id).missing.push(revId);
|
|
}
|
|
|
|
function processDoc(id, rev_tree) {
|
|
// Is this fast enough? Maybe we should switch to a set simulated by a map
|
|
var missingForId = req[id].slice(0);
|
|
traverseRevTree(rev_tree, function (isLeaf, pos, revHash, ctx,
|
|
opts) {
|
|
var rev = pos + '-' + revHash;
|
|
var idx = missingForId.indexOf(rev);
|
|
if (idx === -1) {
|
|
return;
|
|
}
|
|
|
|
missingForId.splice(idx, 1);
|
|
/* istanbul ignore if */
|
|
if (opts.status !== 'available') {
|
|
addToMissing(id, rev);
|
|
}
|
|
});
|
|
|
|
// Traversing the tree is synchronous, so now `missingForId` contains
|
|
// revisions that were not found in the tree
|
|
missingForId.forEach(function (rev) {
|
|
addToMissing(id, rev);
|
|
});
|
|
}
|
|
|
|
ids.map(function (id) {
|
|
this._getRevisionTree(id, function (err, rev_tree) {
|
|
if (err && err.status === 404 && err.message === 'missing') {
|
|
missing.set(id, {missing: req[id]});
|
|
} else if (err) {
|
|
/* istanbul ignore next */
|
|
return callback(err);
|
|
} else {
|
|
processDoc(id, rev_tree);
|
|
}
|
|
|
|
if (++count === ids.length) {
|
|
// convert LazyMap to object
|
|
var missingObj = {};
|
|
missing.forEach(function (value, key) {
|
|
missingObj[key] = value;
|
|
});
|
|
return callback(null, missingObj);
|
|
}
|
|
});
|
|
}, this);
|
|
});
|
|
|
|
// _bulk_get API for faster replication, as described in
|
|
// https://github.com/apache/couchdb-chttpd/pull/33
|
|
// At the "abstract" level, it will just run multiple get()s in
|
|
// parallel, because this isn't much of a performance cost
|
|
// for local databases (except the cost of multiple transactions, which is
|
|
// small). The http adapter overrides this in order
|
|
// to do a more efficient single HTTP request.
|
|
AbstractPouchDB.prototype.bulkGet =
|
|
adapterFun('bulkGet', function (opts, callback) {
|
|
bulkGet(this, opts, callback);
|
|
});
|
|
|
|
// compact one document and fire callback
|
|
// by compacting we mean removing all revisions which
|
|
// are further from the leaf in revision tree than max_height
|
|
AbstractPouchDB.prototype.compactDocument =
|
|
adapterFun('compactDocument', function (docId, maxHeight, callback) {
|
|
var self = this;
|
|
this._getRevisionTree(docId, function (err, revTree) {
|
|
/* istanbul ignore if */
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
var height = computeHeight(revTree);
|
|
var candidates = [];
|
|
var revs = [];
|
|
Object.keys(height).forEach(function (rev) {
|
|
if (height[rev] > maxHeight) {
|
|
candidates.push(rev);
|
|
}
|
|
});
|
|
|
|
traverseRevTree(revTree, function (isLeaf, pos, revHash, ctx, opts) {
|
|
var rev = pos + '-' + revHash;
|
|
if (opts.status === 'available' && candidates.indexOf(rev) !== -1) {
|
|
revs.push(rev);
|
|
}
|
|
});
|
|
self._doCompaction(docId, revs, callback);
|
|
});
|
|
});
|
|
|
|
// compact the whole database using single document
|
|
// compaction
|
|
AbstractPouchDB.prototype.compact =
|
|
adapterFun('compact', function (opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
|
|
var self = this;
|
|
opts = opts || {};
|
|
|
|
self._compactionQueue = self._compactionQueue || [];
|
|
self._compactionQueue.push({opts: opts, callback: callback});
|
|
if (self._compactionQueue.length === 1) {
|
|
doNextCompaction(self);
|
|
}
|
|
});
|
|
AbstractPouchDB.prototype._compact = function (opts, callback) {
|
|
var self = this;
|
|
var changesOpts = {
|
|
return_docs: false,
|
|
last_seq: opts.last_seq || 0
|
|
};
|
|
var promises = [];
|
|
|
|
function onChange(row) {
|
|
promises.push(self.compactDocument(row.id, 0));
|
|
}
|
|
function onComplete(resp) {
|
|
var lastSeq = resp.last_seq;
|
|
PouchPromise.all(promises).then(function () {
|
|
return upsert(self, '_local/compaction', function deltaFunc(doc) {
|
|
if (!doc.last_seq || doc.last_seq < lastSeq) {
|
|
doc.last_seq = lastSeq;
|
|
return doc;
|
|
}
|
|
return false; // somebody else got here first, don't update
|
|
});
|
|
}).then(function () {
|
|
callback(null, {ok: true});
|
|
}).catch(callback);
|
|
}
|
|
self.changes(changesOpts)
|
|
.on('change', onChange)
|
|
.on('complete', onComplete)
|
|
.on('error', callback);
|
|
};
|
|
/* Begin api wrappers. Specific functionality to storage belongs in the
|
|
_[method] */
|
|
AbstractPouchDB.prototype.get =
|
|
adapterFun('get', function (id, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
if (typeof id !== 'string') {
|
|
return callback(createError(INVALID_ID));
|
|
}
|
|
if (isLocalId(id) && typeof this._getLocal === 'function') {
|
|
return this._getLocal(id, callback);
|
|
}
|
|
var leaves = [], self = this;
|
|
|
|
function finishOpenRevs() {
|
|
var result = [];
|
|
var count = leaves.length;
|
|
/* istanbul ignore if */
|
|
if (!count) {
|
|
return callback(null, result);
|
|
}
|
|
// order with open_revs is unspecified
|
|
leaves.forEach(function (leaf) {
|
|
self.get(id, {
|
|
rev: leaf,
|
|
revs: opts.revs,
|
|
attachments: opts.attachments
|
|
}, function (err, doc) {
|
|
if (!err) {
|
|
result.push({ok: doc});
|
|
} else {
|
|
result.push({missing: leaf});
|
|
}
|
|
count--;
|
|
if (!count) {
|
|
callback(null, result);
|
|
}
|
|
});
|
|
});
|
|
}
|
|
|
|
if (opts.open_revs) {
|
|
if (opts.open_revs === "all") {
|
|
this._getRevisionTree(id, function (err, rev_tree) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
leaves = collectLeaves(rev_tree).map(function (leaf) {
|
|
return leaf.rev;
|
|
});
|
|
finishOpenRevs();
|
|
});
|
|
} else {
|
|
if (Array.isArray(opts.open_revs)) {
|
|
leaves = opts.open_revs;
|
|
for (var i = 0; i < leaves.length; i++) {
|
|
var l = leaves[i];
|
|
// looks like it's the only thing couchdb checks
|
|
if (!(typeof (l) === "string" && /^\d+-/.test(l))) {
|
|
return callback(createError(INVALID_REV));
|
|
}
|
|
}
|
|
finishOpenRevs();
|
|
} else {
|
|
return callback(createError(UNKNOWN_ERROR,
|
|
'function_clause'));
|
|
}
|
|
}
|
|
return; // open_revs does not like other options
|
|
}
|
|
|
|
return this._get(id, opts, function (err, result) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
|
|
var doc = result.doc;
|
|
var metadata = result.metadata;
|
|
var ctx = result.ctx;
|
|
|
|
if (opts.conflicts) {
|
|
var conflicts = collectConflicts(metadata);
|
|
if (conflicts.length) {
|
|
doc._conflicts = conflicts;
|
|
}
|
|
}
|
|
|
|
if (isDeleted(metadata, doc._rev)) {
|
|
doc._deleted = true;
|
|
}
|
|
|
|
if (opts.revs || opts.revs_info) {
|
|
var paths = rootToLeaf(metadata.rev_tree);
|
|
var path = arrayFirst(paths, function (arr) {
|
|
return arr.ids.map(function (x) { return x.id; })
|
|
.indexOf(doc._rev.split('-')[1]) !== -1;
|
|
});
|
|
|
|
var indexOfRev = path.ids.map(function (x) {return x.id; })
|
|
.indexOf(doc._rev.split('-')[1]) + 1;
|
|
var howMany = path.ids.length - indexOfRev;
|
|
path.ids.splice(indexOfRev, howMany);
|
|
path.ids.reverse();
|
|
|
|
if (opts.revs) {
|
|
doc._revisions = {
|
|
start: (path.pos + path.ids.length) - 1,
|
|
ids: path.ids.map(function (rev) {
|
|
return rev.id;
|
|
})
|
|
};
|
|
}
|
|
if (opts.revs_info) {
|
|
var pos = path.pos + path.ids.length;
|
|
doc._revs_info = path.ids.map(function (rev) {
|
|
pos--;
|
|
return {
|
|
rev: pos + '-' + rev.id,
|
|
status: rev.opts.status
|
|
};
|
|
});
|
|
}
|
|
}
|
|
|
|
if (opts.attachments && doc._attachments) {
|
|
var attachments = doc._attachments;
|
|
var count = Object.keys(attachments).length;
|
|
if (count === 0) {
|
|
return callback(null, doc);
|
|
}
|
|
Object.keys(attachments).forEach(function (key) {
|
|
this._getAttachment(attachments[key], {
|
|
binary: opts.binary,
|
|
ctx: ctx
|
|
}, function (err, data) {
|
|
var att = doc._attachments[key];
|
|
att.data = data;
|
|
delete att.stub;
|
|
delete att.length;
|
|
if (!--count) {
|
|
callback(null, doc);
|
|
}
|
|
});
|
|
}, self);
|
|
} else {
|
|
if (doc._attachments) {
|
|
for (var key in doc._attachments) {
|
|
/* istanbul ignore else */
|
|
if (doc._attachments.hasOwnProperty(key)) {
|
|
doc._attachments[key].stub = true;
|
|
}
|
|
}
|
|
}
|
|
callback(null, doc);
|
|
}
|
|
});
|
|
});
|
|
|
|
AbstractPouchDB.prototype.getView =
|
|
adapterFun('getView', function (designDocName, viewName, callback) {
|
|
getDesignDocProperty(this, designDocName, 'views', viewName, callback);
|
|
});
|
|
|
|
AbstractPouchDB.prototype.getFilter =
|
|
adapterFun('getFilter', function (designDocName, filterName, callback) {
|
|
getDesignDocProperty(this, designDocName, 'filters', filterName, callback);
|
|
});
|
|
|
|
AbstractPouchDB.prototype.getAttachment =
|
|
adapterFun('getAttachment', function (docId, attachmentId, opts,
|
|
callback) {
|
|
var self = this;
|
|
if (opts instanceof Function) {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
this._get(docId, opts, function (err, res) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
if (res.doc._attachments && res.doc._attachments[attachmentId]) {
|
|
opts.ctx = res.ctx;
|
|
opts.binary = true;
|
|
self._getAttachment(res.doc._attachments[attachmentId], opts, callback);
|
|
} else {
|
|
return callback(createError(MISSING_DOC));
|
|
}
|
|
});
|
|
});
|
|
|
|
AbstractPouchDB.prototype.allDocs =
|
|
adapterFun('allDocs', function (opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
opts.skip = typeof opts.skip !== 'undefined' ? opts.skip : 0;
|
|
if (opts.start_key) {
|
|
opts.startkey = opts.start_key;
|
|
}
|
|
if (opts.end_key) {
|
|
opts.endkey = opts.end_key;
|
|
}
|
|
if ('keys' in opts) {
|
|
if (!Array.isArray(opts.keys)) {
|
|
return callback(new TypeError('options.keys must be an array'));
|
|
}
|
|
var incompatibleOpt =
|
|
['startkey', 'endkey', 'key'].filter(function (incompatibleOpt) {
|
|
return incompatibleOpt in opts;
|
|
})[0];
|
|
if (incompatibleOpt) {
|
|
callback(createError(QUERY_PARSE_ERROR,
|
|
'Query parameter `' + incompatibleOpt +
|
|
'` is not compatible with multi-get'
|
|
));
|
|
return;
|
|
}
|
|
if (this.type() !== 'http') {
|
|
return allDocsKeysQuery(this, opts, callback);
|
|
}
|
|
}
|
|
|
|
return this._allDocs(opts, callback);
|
|
});
|
|
|
|
AbstractPouchDB.prototype.changes = function (opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
return new Changes(this, opts, callback);
|
|
};
|
|
|
|
AbstractPouchDB.prototype.close =
|
|
adapterFun('close', function (callback) {
|
|
this._closed = true;
|
|
return this._close(callback);
|
|
});
|
|
|
|
AbstractPouchDB.prototype.info = adapterFun('info', function (callback) {
|
|
var self = this;
|
|
this._info(function (err, info) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
// assume we know better than the adapter, unless it informs us
|
|
info.db_name = info.db_name || self._db_name;
|
|
info.auto_compaction = !!(self.auto_compaction && self.type() !== 'http');
|
|
info.adapter = self.type();
|
|
callback(null, info);
|
|
});
|
|
});
|
|
|
|
AbstractPouchDB.prototype.id = adapterFun('id', function (callback) {
|
|
return this._id(callback);
|
|
});
|
|
|
|
AbstractPouchDB.prototype.type = function () {
|
|
/* istanbul ignore next */
|
|
return (typeof this._type === 'function') ? this._type() : this.adapter;
|
|
};
|
|
|
|
AbstractPouchDB.prototype.bulkDocs =
|
|
adapterFun('bulkDocs', function (req, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
|
|
opts = opts || {};
|
|
|
|
if (Array.isArray(req)) {
|
|
req = {
|
|
docs: req
|
|
};
|
|
}
|
|
|
|
if (!req || !req.docs || !Array.isArray(req.docs)) {
|
|
return callback(createError(MISSING_BULK_DOCS));
|
|
}
|
|
|
|
for (var i = 0; i < req.docs.length; ++i) {
|
|
if (typeof req.docs[i] !== 'object' || Array.isArray(req.docs[i])) {
|
|
return callback(createError(NOT_AN_OBJECT));
|
|
}
|
|
}
|
|
|
|
var attachmentError;
|
|
req.docs.forEach(function (doc) {
|
|
if (doc._attachments) {
|
|
Object.keys(doc._attachments).forEach(function (name) {
|
|
attachmentError = attachmentError || attachmentNameError(name);
|
|
});
|
|
}
|
|
});
|
|
|
|
if (attachmentError) {
|
|
return callback(createError(BAD_REQUEST, attachmentError));
|
|
}
|
|
|
|
if (!('new_edits' in opts)) {
|
|
if ('new_edits' in req) {
|
|
opts.new_edits = req.new_edits;
|
|
} else {
|
|
opts.new_edits = true;
|
|
}
|
|
}
|
|
|
|
if (!opts.new_edits && this.type() !== 'http') {
|
|
// ensure revisions of the same doc are sorted, so that
|
|
// the local adapter processes them correctly (#2935)
|
|
req.docs.sort(compareByIdThenRev);
|
|
}
|
|
|
|
cleanDocs(req.docs);
|
|
|
|
return this._bulkDocs(req, opts, function (err, res) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
if (!opts.new_edits) {
|
|
// this is what couch does when new_edits is false
|
|
res = res.filter(function (x) {
|
|
return x.error;
|
|
});
|
|
}
|
|
callback(null, res);
|
|
});
|
|
});
|
|
|
|
AbstractPouchDB.prototype.registerDependentDatabase =
|
|
adapterFun('registerDependentDatabase', function (dependentDb,
|
|
callback) {
|
|
var depDB = new this.constructor(dependentDb, this.__opts);
|
|
|
|
function diffFun(doc) {
|
|
doc.dependentDbs = doc.dependentDbs || {};
|
|
if (doc.dependentDbs[dependentDb]) {
|
|
return false; // no update required
|
|
}
|
|
doc.dependentDbs[dependentDb] = true;
|
|
return doc;
|
|
}
|
|
upsert(this, '_local/_pouch_dependentDbs', diffFun)
|
|
.then(function () {
|
|
callback(null, {db: depDB});
|
|
}).catch(callback);
|
|
});
|
|
|
|
AbstractPouchDB.prototype.destroy =
|
|
adapterFun('destroy', function (opts, callback) {
|
|
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
|
|
var self = this;
|
|
var usePrefix = 'use_prefix' in self ? self.use_prefix : true;
|
|
|
|
function destroyDb() {
|
|
// call destroy method of the particular adaptor
|
|
self._destroy(opts, function (err, resp) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
self._destroyed = true;
|
|
self.emit('destroyed');
|
|
callback(null, resp || { 'ok': true });
|
|
});
|
|
}
|
|
|
|
if (self.type() === 'http') {
|
|
// no need to check for dependent DBs if it's a remote DB
|
|
return destroyDb();
|
|
}
|
|
|
|
self.get('_local/_pouch_dependentDbs', function (err, localDoc) {
|
|
if (err) {
|
|
/* istanbul ignore if */
|
|
if (err.status !== 404) {
|
|
return callback(err);
|
|
} else { // no dependencies
|
|
return destroyDb();
|
|
}
|
|
}
|
|
var dependentDbs = localDoc.dependentDbs;
|
|
var PouchDB = self.constructor;
|
|
var deletedMap = Object.keys(dependentDbs).map(function (name) {
|
|
// use_prefix is only false in the browser
|
|
/* istanbul ignore next */
|
|
var trueName = usePrefix ?
|
|
name.replace(new RegExp('^' + PouchDB.prefix), '') : name;
|
|
return new PouchDB(trueName, self.__opts).destroy();
|
|
});
|
|
PouchPromise.all(deletedMap).then(destroyDb, callback);
|
|
});
|
|
});
|
|
|
|
function TaskQueue() {
|
|
this.isReady = false;
|
|
this.failed = false;
|
|
this.queue = [];
|
|
}
|
|
|
|
TaskQueue.prototype.execute = function () {
|
|
var fun;
|
|
if (this.failed) {
|
|
while ((fun = this.queue.shift())) {
|
|
fun(this.failed);
|
|
}
|
|
} else {
|
|
while ((fun = this.queue.shift())) {
|
|
fun();
|
|
}
|
|
}
|
|
};
|
|
|
|
TaskQueue.prototype.fail = function (err) {
|
|
this.failed = err;
|
|
this.execute();
|
|
};
|
|
|
|
TaskQueue.prototype.ready = function (db) {
|
|
this.isReady = true;
|
|
this.db = db;
|
|
this.execute();
|
|
};
|
|
|
|
TaskQueue.prototype.addTask = function (fun) {
|
|
this.queue.push(fun);
|
|
if (this.failed) {
|
|
this.execute();
|
|
}
|
|
};
|
|
|
|
function defaultCallback(err) {
|
|
/* istanbul ignore next */
|
|
if (err && global.debug) {
|
|
console.error(err);
|
|
}
|
|
}
|
|
|
|
// OK, so here's the deal. Consider this code:
|
|
// var db1 = new PouchDB('foo');
|
|
// var db2 = new PouchDB('foo');
|
|
// db1.destroy();
|
|
// ^ these two both need to emit 'destroyed' events,
|
|
// as well as the PouchDB constructor itself.
|
|
// So we have one db object (whichever one got destroy() called on it)
|
|
// responsible for emitting the initial event, which then gets emitted
|
|
// by the constructor, which then broadcasts it to any other dbs
|
|
// that may have been created with the same name.
|
|
function prepareForDestruction(self, opts) {
|
|
var name = opts.originalName;
|
|
var ctor = self.constructor;
|
|
var destructionListeners = ctor._destructionListeners;
|
|
|
|
function onDestroyed() {
|
|
ctor.emit('destroyed', name);
|
|
}
|
|
|
|
function onConstructorDestroyed() {
|
|
self.removeListener('destroyed', onDestroyed);
|
|
self.emit('destroyed', self);
|
|
}
|
|
|
|
self.once('destroyed', onDestroyed);
|
|
|
|
// in setup.js, the constructor is primed to listen for destroy events
|
|
if (!destructionListeners.has(name)) {
|
|
destructionListeners.set(name, []);
|
|
}
|
|
destructionListeners.get(name).push(onConstructorDestroyed);
|
|
}
|
|
|
|
inherits(PouchDB, AbstractPouchDB);
|
|
function PouchDB(name, opts, callback) {
|
|
|
|
if (!(this instanceof PouchDB)) {
|
|
return new PouchDB(name, opts, callback);
|
|
}
|
|
var self = this;
|
|
if (typeof opts === 'function' || typeof opts === 'undefined') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
|
|
if (name && typeof name === 'object') {
|
|
opts = name;
|
|
name = undefined;
|
|
}
|
|
if (typeof callback === 'undefined') {
|
|
callback = defaultCallback;
|
|
}
|
|
name = name || opts.name;
|
|
opts = clone(opts);
|
|
// if name was specified via opts, ignore for the sake of dependentDbs
|
|
delete opts.name;
|
|
this.__opts = opts;
|
|
var oldCB = callback;
|
|
self.auto_compaction = opts.auto_compaction;
|
|
self.prefix = PouchDB.prefix;
|
|
AbstractPouchDB.call(self);
|
|
self.taskqueue = new TaskQueue();
|
|
var promise = new PouchPromise(function (fulfill, reject) {
|
|
callback = function (err, resp) {
|
|
/* istanbul ignore if */
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
delete resp.then;
|
|
fulfill(resp);
|
|
};
|
|
|
|
opts = clone(opts);
|
|
var originalName = opts.name || name;
|
|
var backend, error;
|
|
(function () {
|
|
try {
|
|
|
|
if (typeof originalName !== 'string') {
|
|
error = new Error('Missing/invalid DB name');
|
|
error.code = 400;
|
|
throw error;
|
|
}
|
|
|
|
backend = PouchDB.parseAdapter(originalName, opts);
|
|
|
|
opts.originalName = originalName;
|
|
opts.name = backend.name;
|
|
if (opts.prefix && backend.adapter !== 'http' &&
|
|
backend.adapter !== 'https') {
|
|
opts.name = opts.prefix + opts.name;
|
|
}
|
|
opts.adapter = opts.adapter || backend.adapter;
|
|
self._adapter = opts.adapter;
|
|
debug('pouchdb:adapter')('Picked adapter: ' + opts.adapter);
|
|
|
|
self._db_name = originalName;
|
|
if (!PouchDB.adapters[opts.adapter]) {
|
|
error = new Error('Adapter is missing');
|
|
error.code = 404;
|
|
throw error;
|
|
}
|
|
|
|
/* istanbul ignore if */
|
|
if (!PouchDB.adapters[opts.adapter].valid()) {
|
|
error = new Error('Invalid Adapter');
|
|
error.code = 404;
|
|
throw error;
|
|
}
|
|
} catch (err) {
|
|
self.taskqueue.fail(err);
|
|
}
|
|
}());
|
|
if (error) {
|
|
return reject(error); // constructor error, see above
|
|
}
|
|
self.adapter = opts.adapter;
|
|
|
|
// needs access to PouchDB;
|
|
self.replicate = {};
|
|
|
|
self.replicate.from = function (url, opts, callback) {
|
|
return self.constructor.replicate(url, self, opts, callback);
|
|
};
|
|
|
|
self.replicate.to = function (url, opts, callback) {
|
|
return self.constructor.replicate(self, url, opts, callback);
|
|
};
|
|
|
|
self.sync = function (dbName, opts, callback) {
|
|
return self.constructor.sync(self, dbName, opts, callback);
|
|
};
|
|
|
|
self.replicate.sync = self.sync;
|
|
|
|
PouchDB.adapters[opts.adapter].call(self, opts, function (err) {
|
|
/* istanbul ignore if */
|
|
if (err) {
|
|
self.taskqueue.fail(err);
|
|
callback(err);
|
|
return;
|
|
}
|
|
prepareForDestruction(self, opts);
|
|
|
|
self.emit('created', self);
|
|
PouchDB.emit('created', opts.originalName);
|
|
self.taskqueue.ready(self);
|
|
callback(null, self);
|
|
});
|
|
|
|
});
|
|
promise.then(function (resp) {
|
|
oldCB(null, resp);
|
|
}, oldCB);
|
|
self.then = promise.then.bind(promise);
|
|
self.catch = promise.catch.bind(promise);
|
|
}
|
|
|
|
PouchDB.debug = debug;
|
|
|
|
function isChromeApp() {
|
|
return (typeof chrome !== "undefined" &&
|
|
typeof chrome.storage !== "undefined" &&
|
|
typeof chrome.storage.local !== "undefined");
|
|
}
|
|
|
|
var hasLocal;
|
|
|
|
if (isChromeApp()) {
|
|
hasLocal = false;
|
|
} else {
|
|
try {
|
|
localStorage.setItem('_pouch_check_localstorage', 1);
|
|
hasLocal = !!localStorage.getItem('_pouch_check_localstorage');
|
|
} catch (e) {
|
|
hasLocal = false;
|
|
}
|
|
}
|
|
|
|
function hasLocalStorage() {
|
|
return hasLocal;
|
|
}
|
|
|
|
PouchDB.adapters = {};
|
|
PouchDB.preferredAdapters = [];
|
|
|
|
PouchDB.prefix = '_pouch_';
|
|
|
|
var eventEmitter = new events.EventEmitter();
|
|
|
|
function setUpEventEmitter(Pouch) {
|
|
Object.keys(events.EventEmitter.prototype).forEach(function (key) {
|
|
if (typeof events.EventEmitter.prototype[key] === 'function') {
|
|
Pouch[key] = eventEmitter[key].bind(eventEmitter);
|
|
}
|
|
});
|
|
|
|
// these are created in constructor.js, and allow us to notify each DB with
|
|
// the same name that it was destroyed, via the constructor object
|
|
var destructListeners = Pouch._destructionListeners = new pouchdbCollections.Map();
|
|
Pouch.on('destroyed', function onConstructorDestroyed(name) {
|
|
if (!destructListeners.has(name)) {
|
|
return;
|
|
}
|
|
destructListeners.get(name).forEach(function (callback) {
|
|
callback();
|
|
});
|
|
destructListeners.delete(name);
|
|
});
|
|
}
|
|
|
|
setUpEventEmitter(PouchDB);
|
|
|
|
PouchDB.parseAdapter = function (name, opts) {
|
|
var match = name.match(/([a-z\-]*):\/\/(.*)/);
|
|
var adapter, adapterName;
|
|
if (match) {
|
|
// the http adapter expects the fully qualified name
|
|
name = /http(s?)/.test(match[1]) ? match[1] + '://' + match[2] : match[2];
|
|
adapter = match[1];
|
|
/* istanbul ignore if */
|
|
if (!PouchDB.adapters[adapter].valid()) {
|
|
throw 'Invalid adapter';
|
|
}
|
|
return {name: name, adapter: match[1]};
|
|
}
|
|
|
|
// check for browsers that have been upgraded from websql-only to websql+idb
|
|
var skipIdb = 'idb' in PouchDB.adapters && 'websql' in PouchDB.adapters &&
|
|
hasLocalStorage() &&
|
|
localStorage['_pouch__websqldb_' + PouchDB.prefix + name];
|
|
|
|
|
|
if (opts.adapter) {
|
|
adapterName = opts.adapter;
|
|
} else if (typeof opts !== 'undefined' && opts.db) {
|
|
adapterName = 'leveldb';
|
|
} else { // automatically determine adapter
|
|
for (var i = 0; i < PouchDB.preferredAdapters.length; ++i) {
|
|
adapterName = PouchDB.preferredAdapters[i];
|
|
if (adapterName in PouchDB.adapters) {
|
|
/* istanbul ignore if */
|
|
if (skipIdb && adapterName === 'idb') {
|
|
// log it, because this can be confusing during development
|
|
console.log('PouchDB is downgrading "' + name + '" to WebSQL to' +
|
|
' avoid data loss, because it was already opened with WebSQL.');
|
|
continue; // keep using websql to avoid user data loss
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
adapter = PouchDB.adapters[adapterName];
|
|
|
|
// if adapter is invalid, then an error will be thrown later
|
|
var usePrefix = (adapter && 'use_prefix' in adapter) ?
|
|
adapter.use_prefix : true;
|
|
|
|
return {
|
|
name: usePrefix ? (PouchDB.prefix + name) : name,
|
|
adapter: adapterName
|
|
};
|
|
};
|
|
|
|
PouchDB.adapter = function (id, obj, addToPreferredAdapters) {
|
|
if (obj.valid()) {
|
|
PouchDB.adapters[id] = obj;
|
|
if (addToPreferredAdapters) {
|
|
PouchDB.preferredAdapters.push(id);
|
|
}
|
|
}
|
|
};
|
|
|
|
PouchDB.plugin = function (obj) {
|
|
Object.keys(obj).forEach(function (id) {
|
|
PouchDB.prototype[id] = obj[id];
|
|
});
|
|
|
|
return PouchDB;
|
|
};
|
|
|
|
PouchDB.defaults = function (defaultOpts) {
|
|
function PouchAlt(name, opts, callback) {
|
|
if (!(this instanceof PouchAlt)) {
|
|
return new PouchAlt(name, opts, callback);
|
|
}
|
|
|
|
if (typeof opts === 'function' || typeof opts === 'undefined') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
if (name && typeof name === 'object') {
|
|
opts = name;
|
|
name = undefined;
|
|
}
|
|
|
|
opts = jsExtend.extend({}, defaultOpts, opts);
|
|
PouchDB.call(this, name, opts, callback);
|
|
}
|
|
|
|
inherits(PouchAlt, PouchDB);
|
|
|
|
setUpEventEmitter(PouchAlt);
|
|
|
|
PouchAlt.preferredAdapters = PouchDB.preferredAdapters.slice();
|
|
Object.keys(PouchDB).forEach(function (key) {
|
|
if (!(key in PouchAlt)) {
|
|
PouchAlt[key] = PouchDB[key];
|
|
}
|
|
});
|
|
|
|
return PouchAlt;
|
|
};
|
|
|
|
// Abstracts constructing a Blob object, so it also works in older
|
|
// browsers that don't support the native Blob constructor (e.g.
|
|
// old QtWebKit versions, Android < 4.4).
|
|
function createBlob(parts, properties) {
|
|
/* global BlobBuilder,MSBlobBuilder,MozBlobBuilder,WebKitBlobBuilder */
|
|
parts = parts || [];
|
|
properties = properties || {};
|
|
try {
|
|
return new Blob(parts, properties);
|
|
} catch (e) {
|
|
if (e.name !== "TypeError") {
|
|
throw e;
|
|
}
|
|
var Builder = typeof BlobBuilder !== 'undefined' ? BlobBuilder :
|
|
typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder :
|
|
typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder :
|
|
WebKitBlobBuilder;
|
|
var builder = new Builder();
|
|
for (var i = 0; i < parts.length; i += 1) {
|
|
builder.append(parts[i]);
|
|
}
|
|
return builder.getBlob(properties.type);
|
|
}
|
|
}
|
|
|
|
// simplified API. universal browser support is assumed
|
|
function readAsArrayBuffer(blob, callback) {
|
|
if (typeof FileReader === 'undefined') {
|
|
// fix for Firefox in a web worker:
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=901097
|
|
return callback(new FileReaderSync().readAsArrayBuffer(blob));
|
|
}
|
|
|
|
var reader = new FileReader();
|
|
reader.onloadend = function (e) {
|
|
var result = e.target.result || new ArrayBuffer(0);
|
|
callback(result);
|
|
};
|
|
reader.readAsArrayBuffer(blob);
|
|
}
|
|
|
|
function wrappedFetch() {
|
|
var wrappedPromise = {};
|
|
|
|
var promise = new PouchPromise(function (resolve, reject) {
|
|
wrappedPromise.resolve = resolve;
|
|
wrappedPromise.reject = reject;
|
|
});
|
|
|
|
var args = new Array(arguments.length);
|
|
|
|
for (var i = 0; i < args.length; i++) {
|
|
args[i] = arguments[i];
|
|
}
|
|
|
|
wrappedPromise.promise = promise;
|
|
|
|
PouchPromise.resolve().then(function () {
|
|
return fetch.apply(null, args);
|
|
}).then(function (response) {
|
|
wrappedPromise.resolve(response);
|
|
}).catch(function (error) {
|
|
wrappedPromise.reject(error);
|
|
});
|
|
|
|
return wrappedPromise;
|
|
}
|
|
|
|
function fetchRequest(options, callback) {
|
|
var wrappedPromise, timer, response;
|
|
|
|
var headers = new Headers();
|
|
|
|
var fetchOptions = {
|
|
method: options.method,
|
|
credentials: 'include',
|
|
headers: headers
|
|
};
|
|
|
|
if (options.json) {
|
|
headers.set('Accept', 'application/json');
|
|
headers.set('Content-Type', options.headers['Content-Type'] ||
|
|
'application/json');
|
|
}
|
|
|
|
if (options.body && (options.body instanceof Blob)) {
|
|
readAsArrayBuffer(options.body, function (arrayBuffer) {
|
|
fetchOptions.body = arrayBuffer;
|
|
});
|
|
} else if (options.body &&
|
|
options.processData &&
|
|
typeof options.body !== 'string') {
|
|
fetchOptions.body = JSON.stringify(options.body);
|
|
} else if ('body' in options) {
|
|
fetchOptions.body = options.body;
|
|
} else {
|
|
fetchOptions.body = null;
|
|
}
|
|
|
|
Object.keys(options.headers).forEach(function (key) {
|
|
if (options.headers.hasOwnProperty(key)) {
|
|
headers.set(key, options.headers[key]);
|
|
}
|
|
});
|
|
|
|
wrappedPromise = wrappedFetch(options.url, fetchOptions);
|
|
|
|
if (options.timeout > 0) {
|
|
timer = setTimeout(function () {
|
|
wrappedPromise.reject(new Error('Load timeout for resource: ' +
|
|
options.url));
|
|
}, options.timeout);
|
|
}
|
|
|
|
wrappedPromise.promise.then(function (fetchResponse) {
|
|
response = {
|
|
statusCode: fetchResponse.status
|
|
};
|
|
|
|
if (options.timeout > 0) {
|
|
clearTimeout(timer);
|
|
}
|
|
|
|
if (response.statusCode >= 200 && response.statusCode < 300) {
|
|
return options.binary ? fetchResponse.blob() : fetchResponse.text();
|
|
}
|
|
|
|
return fetchResponse.json();
|
|
}).then(function (result) {
|
|
if (response.statusCode >= 200 && response.statusCode < 300) {
|
|
callback(null, response, result);
|
|
} else {
|
|
callback(result, response);
|
|
}
|
|
}).catch(function (error) {
|
|
callback(error, response);
|
|
});
|
|
|
|
return {abort: wrappedPromise.reject};
|
|
}
|
|
|
|
function xhRequest(options, callback) {
|
|
|
|
var xhr, timer;
|
|
var timedout = false;
|
|
|
|
var abortReq = function () {
|
|
xhr.abort();
|
|
};
|
|
|
|
var timeoutReq = function () {
|
|
timedout = true;
|
|
xhr.abort();
|
|
};
|
|
|
|
if (options.xhr) {
|
|
xhr = new options.xhr();
|
|
} else {
|
|
xhr = new XMLHttpRequest();
|
|
}
|
|
|
|
try {
|
|
xhr.open(options.method, options.url);
|
|
} catch (exception) {
|
|
/* error code hardcoded to throw INVALID_URL */
|
|
callback(exception, {statusCode: 413});
|
|
}
|
|
|
|
xhr.withCredentials = ('withCredentials' in options) ?
|
|
options.withCredentials : true;
|
|
|
|
if (options.method === 'GET') {
|
|
delete options.headers['Content-Type'];
|
|
} else if (options.json) {
|
|
options.headers.Accept = 'application/json';
|
|
options.headers['Content-Type'] = options.headers['Content-Type'] ||
|
|
'application/json';
|
|
if (options.body &&
|
|
options.processData &&
|
|
typeof options.body !== "string") {
|
|
options.body = JSON.stringify(options.body);
|
|
}
|
|
}
|
|
|
|
if (options.binary) {
|
|
xhr.responseType = 'arraybuffer';
|
|
}
|
|
|
|
if (!('body' in options)) {
|
|
options.body = null;
|
|
}
|
|
|
|
for (var key in options.headers) {
|
|
if (options.headers.hasOwnProperty(key)) {
|
|
xhr.setRequestHeader(key, options.headers[key]);
|
|
}
|
|
}
|
|
|
|
if (options.timeout > 0) {
|
|
timer = setTimeout(timeoutReq, options.timeout);
|
|
xhr.onprogress = function () {
|
|
clearTimeout(timer);
|
|
if(xhr.readyState !== 4) {
|
|
timer = setTimeout(timeoutReq, options.timeout);
|
|
}
|
|
};
|
|
if (typeof xhr.upload !== 'undefined') { // does not exist in ie9
|
|
xhr.upload.onprogress = xhr.onprogress;
|
|
}
|
|
}
|
|
|
|
xhr.onreadystatechange = function () {
|
|
if (xhr.readyState !== 4) {
|
|
return;
|
|
}
|
|
|
|
var response = {
|
|
statusCode: xhr.status
|
|
};
|
|
|
|
if (xhr.status >= 200 && xhr.status < 300) {
|
|
var data;
|
|
if (options.binary) {
|
|
data = createBlob([xhr.response || ''], {
|
|
type: xhr.getResponseHeader('Content-Type')
|
|
});
|
|
} else {
|
|
data = xhr.responseText;
|
|
}
|
|
callback(null, response, data);
|
|
} else {
|
|
var err = {};
|
|
if(timedout) {
|
|
err = new Error('ETIMEDOUT');
|
|
response.statusCode = 400; // for consistency with node request
|
|
} else {
|
|
try {
|
|
err = JSON.parse(xhr.response);
|
|
} catch(e) {}
|
|
}
|
|
callback(err, response);
|
|
}
|
|
};
|
|
|
|
if (options.body && (options.body instanceof Blob)) {
|
|
readAsArrayBuffer(options.body, function (arrayBuffer) {
|
|
xhr.send(arrayBuffer);
|
|
});
|
|
} else {
|
|
xhr.send(options.body);
|
|
}
|
|
|
|
return {abort: abortReq};
|
|
}
|
|
|
|
function testXhr() {
|
|
try {
|
|
new XMLHttpRequest();
|
|
return true;
|
|
} catch (err) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
var hasXhr = testXhr();
|
|
|
|
function ajax$1(options, callback) {
|
|
if (hasXhr || options.xhr) {
|
|
return xhRequest(options, callback);
|
|
} else {
|
|
return fetchRequest(options, callback);
|
|
}
|
|
}
|
|
|
|
// the blob already has a type; do nothing
|
|
var res = function () {};
|
|
|
|
function defaultBody() {
|
|
return '';
|
|
}
|
|
|
|
function ajaxCore(options, callback) {
|
|
|
|
options = clone(options);
|
|
|
|
var defaultOptions = {
|
|
method : "GET",
|
|
headers: {},
|
|
json: true,
|
|
processData: true,
|
|
timeout: 10000,
|
|
cache: false
|
|
};
|
|
|
|
options = jsExtend.extend(defaultOptions, options);
|
|
|
|
function onSuccess(obj, resp, cb) {
|
|
if (!options.binary && options.json && typeof obj === 'string') {
|
|
try {
|
|
obj = JSON.parse(obj);
|
|
} catch (e) {
|
|
// Probably a malformed JSON from server
|
|
return cb(e);
|
|
}
|
|
}
|
|
if (Array.isArray(obj)) {
|
|
obj = obj.map(function (v) {
|
|
if (v.error || v.missing) {
|
|
return generateErrorFromResponse(v);
|
|
} else {
|
|
return v;
|
|
}
|
|
});
|
|
}
|
|
if (options.binary) {
|
|
res(obj, resp);
|
|
}
|
|
cb(null, obj, resp);
|
|
}
|
|
|
|
function onError(err, cb) {
|
|
var errParsed, errObj;
|
|
if (err.code && err.status) {
|
|
var err2 = new Error(err.message || err.code);
|
|
err2.status = err.status;
|
|
return cb(err2);
|
|
}
|
|
if (err.message && err.message === 'ETIMEDOUT') {
|
|
return cb(err);
|
|
}
|
|
// We always get code && status in node
|
|
/* istanbul ignore next */
|
|
try {
|
|
errParsed = JSON.parse(err.responseText);
|
|
//would prefer not to have a try/catch clause
|
|
errObj = generateErrorFromResponse(errParsed);
|
|
} catch (e) {
|
|
errObj = generateErrorFromResponse(err);
|
|
}
|
|
/* istanbul ignore next */
|
|
cb(errObj);
|
|
}
|
|
|
|
|
|
if (options.json) {
|
|
if (!options.binary) {
|
|
options.headers.Accept = 'application/json';
|
|
}
|
|
options.headers['Content-Type'] = options.headers['Content-Type'] ||
|
|
'application/json';
|
|
}
|
|
|
|
if (options.binary) {
|
|
options.encoding = null;
|
|
options.json = false;
|
|
}
|
|
|
|
if (!options.processData) {
|
|
options.json = false;
|
|
}
|
|
|
|
return ajax$1(options, function (err, response, body) {
|
|
if (err) {
|
|
err.status = response ? response.statusCode : 400;
|
|
return onError(err, callback);
|
|
}
|
|
|
|
var error;
|
|
var content_type = response.headers && response.headers['content-type'];
|
|
var data = body || defaultBody();
|
|
|
|
// CouchDB doesn't always return the right content-type for JSON data, so
|
|
// we check for ^{ and }$ (ignoring leading/trailing whitespace)
|
|
if (!options.binary && (options.json || !options.processData) &&
|
|
typeof data !== 'object' &&
|
|
(/json/.test(content_type) ||
|
|
(/^[\s]*\{/.test(data) && /\}[\s]*$/.test(data)))) {
|
|
try {
|
|
data = JSON.parse(data.toString());
|
|
} catch (e) {}
|
|
}
|
|
|
|
if (response.statusCode >= 200 && response.statusCode < 300) {
|
|
onSuccess(data, response, callback);
|
|
} else {
|
|
error = generateErrorFromResponse(data);
|
|
error.status = response.statusCode;
|
|
callback(error);
|
|
}
|
|
});
|
|
}
|
|
|
|
function ajax(opts, callback) {
|
|
|
|
// cache-buster, specifically designed to work around IE's aggressive caching
|
|
// see http://www.dashbay.com/2011/05/internet-explorer-caches-ajax/
|
|
// Also Safari caches POSTs, so we need to cache-bust those too.
|
|
var ua = (navigator && navigator.userAgent) ?
|
|
navigator.userAgent.toLowerCase() : '';
|
|
|
|
var isSafari = ua.indexOf('safari') !== -1 && ua.indexOf('chrome') === -1;
|
|
var isIE = ua.indexOf('msie') !== -1;
|
|
var isEdge = ua.indexOf('edge') !== -1;
|
|
|
|
// it appears the new version of safari also caches GETs,
|
|
// see https://github.com/pouchdb/pouchdb/issues/5010
|
|
var shouldCacheBust = (isSafari ||
|
|
((isIE || isEdge) && opts.method === 'GET'));
|
|
|
|
var cache = 'cache' in opts ? opts.cache : true;
|
|
|
|
var isBlobUrl = /^blob:/.test(opts.url); // don't append nonces for blob URLs
|
|
|
|
if (!isBlobUrl && (shouldCacheBust || !cache)) {
|
|
var hasArgs = opts.url.indexOf('?') !== -1;
|
|
opts.url += (hasArgs ? '&' : '?') + '_nonce=' + Date.now();
|
|
}
|
|
|
|
return ajaxCore(opts, callback);
|
|
}
|
|
|
|
// originally parseUri 1.2.2, now patched by us
|
|
// (c) Steven Levithan <stevenlevithan.com>
|
|
// MIT License
|
|
var keys = ["source", "protocol", "authority", "userInfo", "user", "password",
|
|
"host", "port", "relative", "path", "directory", "file", "query", "anchor"];
|
|
var qName ="queryKey";
|
|
var qParser = /(?:^|&)([^&=]*)=?([^&]*)/g;
|
|
|
|
// use the "loose" parser
|
|
/* jshint maxlen: false */
|
|
var parser = /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
|
|
|
|
function parseUri(str) {
|
|
var m = parser.exec(str);
|
|
var uri = {};
|
|
var i = 14;
|
|
|
|
while (i--) {
|
|
var key = keys[i];
|
|
var value = m[i] || "";
|
|
var encoded = ['user', 'password'].indexOf(key) !== -1;
|
|
uri[key] = encoded ? decodeURIComponent(value) : value;
|
|
}
|
|
|
|
uri[qName] = {};
|
|
uri[keys[12]].replace(qParser, function ($0, $1, $2) {
|
|
if ($1) {
|
|
uri[qName][$1] = $2;
|
|
}
|
|
});
|
|
|
|
return uri;
|
|
}
|
|
|
|
var atob$1 = function (str) {
|
|
return atob(str);
|
|
};
|
|
|
|
var btoa$1 = function (str) {
|
|
return btoa(str);
|
|
};
|
|
|
|
// From http://stackoverflow.com/questions/14967647/ (continues on next line)
|
|
// encode-decode-image-with-base64-breaks-image (2013-04-21)
|
|
function binaryStringToArrayBuffer(bin) {
|
|
var length = bin.length;
|
|
var buf = new ArrayBuffer(length);
|
|
var arr = new Uint8Array(buf);
|
|
for (var i = 0; i < length; i++) {
|
|
arr[i] = bin.charCodeAt(i);
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
function binStringToBluffer(binString, type) {
|
|
return createBlob([binaryStringToArrayBuffer(binString)], {type: type});
|
|
}
|
|
|
|
var extend$1 = jsExtend__default.extend;
|
|
|
|
var utils = {
|
|
ajax: ajax,
|
|
parseUri: parseUri,
|
|
uuid: uuid,
|
|
Promise: PouchPromise,
|
|
atob: atob$1,
|
|
btoa: btoa$1,
|
|
binaryStringToBlobOrBuffer: binStringToBluffer,
|
|
clone: clone,
|
|
extend: extend$1,
|
|
createError: createError
|
|
};
|
|
|
|
function tryFilter(filter, doc, req) {
|
|
try {
|
|
return !filter(doc, req);
|
|
} catch (err) {
|
|
var msg = 'Filter function threw: ' + err.toString();
|
|
return createError(BAD_REQUEST, msg);
|
|
}
|
|
}
|
|
|
|
function filterChange(opts) {
|
|
var req = {};
|
|
var hasFilter = opts.filter && typeof opts.filter === 'function';
|
|
req.query = opts.query_params;
|
|
|
|
return function filter(change) {
|
|
if (!change.doc) {
|
|
// CSG sends events on the changes feed that don't have documents,
|
|
// this hack makes a whole lot of existing code robust.
|
|
change.doc = {};
|
|
}
|
|
|
|
var filterReturn = hasFilter && tryFilter(opts.filter, change.doc, req);
|
|
|
|
if (typeof filterReturn === 'object') {
|
|
return filterReturn;
|
|
}
|
|
|
|
if (filterReturn) {
|
|
return false;
|
|
}
|
|
|
|
if (!opts.include_docs) {
|
|
delete change.doc;
|
|
} else if (!opts.attachments) {
|
|
for (var att in change.doc._attachments) {
|
|
/* istanbul ignore else */
|
|
if (change.doc._attachments.hasOwnProperty(att)) {
|
|
change.doc._attachments[att].stub = true;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
};
|
|
}
|
|
|
|
// designed to give info to browser users, who are disturbed
|
|
// when they see http errors in the console
|
|
function explainError(status, str) {
|
|
if ('console' in global && 'info' in console) {
|
|
console.info('The above ' + status + ' is totally normal. ' + str);
|
|
}
|
|
}
|
|
|
|
var collate$1 = pouchCollate__default.collate;
|
|
|
|
var CHECKPOINT_VERSION = 1;
|
|
var REPLICATOR = "pouchdb";
|
|
// This is an arbitrary number to limit the
|
|
// amount of replication history we save in the checkpoint.
|
|
// If we save too much, the checkpoing docs will become very big,
|
|
// if we save fewer, we'll run a greater risk of having to
|
|
// read all the changes from 0 when checkpoint PUTs fail
|
|
// CouchDB 2.0 has a more involved history pruning,
|
|
// but let's go for the simple version for now.
|
|
var CHECKPOINT_HISTORY_SIZE = 5;
|
|
var LOWEST_SEQ = 0;
|
|
|
|
function updateCheckpoint(db, id, checkpoint, session, returnValue) {
|
|
return db.get(id).catch(function (err) {
|
|
if (err.status === 404) {
|
|
if (db.type() === 'http') {
|
|
explainError(
|
|
404, 'PouchDB is just checking if a remote checkpoint exists.'
|
|
);
|
|
}
|
|
return {
|
|
session_id: session,
|
|
_id: id,
|
|
history: [],
|
|
replicator: REPLICATOR,
|
|
version: CHECKPOINT_VERSION
|
|
};
|
|
}
|
|
throw err;
|
|
}).then(function (doc) {
|
|
if (returnValue.cancelled) {
|
|
return;
|
|
}
|
|
// Filter out current entry for this replication
|
|
doc.history = (doc.history || []).filter(function (item) {
|
|
return item.session_id !== session;
|
|
});
|
|
|
|
// Add the latest checkpoint to history
|
|
doc.history.unshift({
|
|
last_seq: checkpoint,
|
|
session_id: session
|
|
});
|
|
|
|
// Just take the last pieces in history, to
|
|
// avoid really big checkpoint docs.
|
|
// see comment on history size above
|
|
doc.history = doc.history.slice(0, CHECKPOINT_HISTORY_SIZE);
|
|
|
|
doc.version = CHECKPOINT_VERSION;
|
|
doc.replicator = REPLICATOR;
|
|
|
|
doc.session_id = session;
|
|
doc.last_seq = checkpoint;
|
|
|
|
return db.put(doc).catch(function (err) {
|
|
if (err.status === 409) {
|
|
// retry; someone is trying to write a checkpoint simultaneously
|
|
return updateCheckpoint(db, id, checkpoint, session, returnValue);
|
|
}
|
|
throw err;
|
|
});
|
|
});
|
|
}
|
|
|
|
function Checkpointer(src, target, id, returnValue) {
|
|
this.src = src;
|
|
this.target = target;
|
|
this.id = id;
|
|
this.returnValue = returnValue;
|
|
}
|
|
|
|
Checkpointer.prototype.writeCheckpoint = function (checkpoint, session) {
|
|
var self = this;
|
|
return this.updateTarget(checkpoint, session).then(function () {
|
|
return self.updateSource(checkpoint, session);
|
|
});
|
|
};
|
|
|
|
Checkpointer.prototype.updateTarget = function (checkpoint, session) {
|
|
return updateCheckpoint(this.target, this.id, checkpoint,
|
|
session, this.returnValue);
|
|
};
|
|
|
|
Checkpointer.prototype.updateSource = function (checkpoint, session) {
|
|
var self = this;
|
|
if (this.readOnlySource) {
|
|
return PouchPromise.resolve(true);
|
|
}
|
|
return updateCheckpoint(this.src, this.id, checkpoint,
|
|
session, this.returnValue)
|
|
.catch(function (err) {
|
|
if (isForbiddenError(err)) {
|
|
self.readOnlySource = true;
|
|
return true;
|
|
}
|
|
throw err;
|
|
});
|
|
};
|
|
|
|
var comparisons = {
|
|
"undefined": function (targetDoc, sourceDoc) {
|
|
// This is the previous comparison function
|
|
if (collate$1(targetDoc.last_seq, sourceDoc.last_seq) === 0) {
|
|
return sourceDoc.last_seq;
|
|
}
|
|
/* istanbul ignore next */
|
|
return 0;
|
|
},
|
|
"1": function (targetDoc, sourceDoc) {
|
|
// This is the comparison function ported from CouchDB
|
|
return compareReplicationLogs(sourceDoc, targetDoc).last_seq;
|
|
}
|
|
};
|
|
|
|
Checkpointer.prototype.getCheckpoint = function () {
|
|
var self = this;
|
|
return self.target.get(self.id).then(function (targetDoc) {
|
|
if (self.readOnlySource) {
|
|
return PouchPromise.resolve(targetDoc.last_seq);
|
|
}
|
|
|
|
return self.src.get(self.id).then(function (sourceDoc) {
|
|
// Since we can't migrate an old version doc to a new one
|
|
// (no session id), we just go with the lowest seq in this case
|
|
/* istanbul ignore if */
|
|
if (targetDoc.version !== sourceDoc.version) {
|
|
return LOWEST_SEQ;
|
|
}
|
|
|
|
var version;
|
|
if (targetDoc.version) {
|
|
version = targetDoc.version.toString();
|
|
} else {
|
|
version = "undefined";
|
|
}
|
|
|
|
if (version in comparisons) {
|
|
return comparisons[version](targetDoc, sourceDoc);
|
|
}
|
|
/* istanbul ignore next */
|
|
return LOWEST_SEQ;
|
|
}, function (err) {
|
|
if (err.status === 404 && targetDoc.last_seq) {
|
|
return self.src.put({
|
|
_id: self.id,
|
|
last_seq: LOWEST_SEQ
|
|
}).then(function () {
|
|
return LOWEST_SEQ;
|
|
}, function (err) {
|
|
if (isForbiddenError(err)) {
|
|
self.readOnlySource = true;
|
|
return targetDoc.last_seq;
|
|
}
|
|
/* istanbul ignore next */
|
|
return LOWEST_SEQ;
|
|
});
|
|
}
|
|
throw err;
|
|
});
|
|
}).catch(function (err) {
|
|
if (err.status !== 404) {
|
|
throw err;
|
|
}
|
|
return LOWEST_SEQ;
|
|
});
|
|
};
|
|
// This checkpoint comparison is ported from CouchDBs source
|
|
// they come from here:
|
|
// https://github.com/apache/couchdb-couch-replicator/blob/master/src/couch_replicator.erl#L863-L906
|
|
|
|
function compareReplicationLogs(srcDoc, tgtDoc) {
|
|
if (srcDoc.session_id === tgtDoc.session_id) {
|
|
return {
|
|
last_seq: srcDoc.last_seq,
|
|
history: srcDoc.history || []
|
|
};
|
|
}
|
|
|
|
var sourceHistory = srcDoc.history || [];
|
|
var targetHistory = tgtDoc.history || [];
|
|
return compareReplicationHistory(sourceHistory, targetHistory);
|
|
}
|
|
|
|
function compareReplicationHistory(sourceHistory, targetHistory) {
|
|
// the erlang loop via function arguments is not so easy to repeat in JS
|
|
// therefore, doing this as recursion
|
|
var S = sourceHistory[0];
|
|
var sourceRest = sourceHistory.slice(1);
|
|
var T = targetHistory[0];
|
|
var targetRest = targetHistory.slice(1);
|
|
|
|
if (!S || targetHistory.length === 0) {
|
|
return {
|
|
last_seq: LOWEST_SEQ,
|
|
history: []
|
|
};
|
|
}
|
|
|
|
var sourceId = S.session_id;
|
|
/* istanbul ignore if */
|
|
if (hasSessionId(sourceId, targetHistory)) {
|
|
return {
|
|
last_seq: S.last_seq,
|
|
history: sourceHistory
|
|
};
|
|
}
|
|
|
|
var targetId = T.session_id;
|
|
if (hasSessionId(targetId, sourceRest)) {
|
|
return {
|
|
last_seq: T.last_seq,
|
|
history: targetRest
|
|
};
|
|
}
|
|
|
|
return compareReplicationHistory(sourceRest, targetRest);
|
|
}
|
|
|
|
function hasSessionId(sessionId, history) {
|
|
var props = history[0];
|
|
var rest = history.slice(1);
|
|
|
|
if (!sessionId || history.length === 0) {
|
|
return false;
|
|
}
|
|
|
|
if (sessionId === props.session_id) {
|
|
return true;
|
|
}
|
|
|
|
return hasSessionId(sessionId, rest);
|
|
}
|
|
|
|
function isForbiddenError(err) {
|
|
return typeof err.status === 'number' && Math.floor(err.status / 100) === 4;
|
|
}
|
|
|
|
var STARTING_BACK_OFF = 0;
|
|
|
|
function randomNumber(min, max) {
|
|
min = parseInt(min, 10) || 0;
|
|
max = parseInt(max, 10);
|
|
if (max !== max || max <= min) {
|
|
max = (min || 1) << 1; //doubling
|
|
} else {
|
|
max = max + 1;
|
|
}
|
|
var ratio = Math.random();
|
|
var range = max - min;
|
|
|
|
return ~~(range * ratio + min); // ~~ coerces to an int, but fast.
|
|
}
|
|
|
|
function defaultBackOff(min) {
|
|
var max = 0;
|
|
if (!min) {
|
|
max = 2000;
|
|
}
|
|
return randomNumber(min, max);
|
|
}
|
|
|
|
function backOff(opts, returnValue, error, callback) {
|
|
if (opts.retry === false) {
|
|
returnValue.emit('error', error);
|
|
returnValue.removeAllListeners();
|
|
return;
|
|
}
|
|
if (typeof opts.back_off_function !== 'function') {
|
|
opts.back_off_function = defaultBackOff;
|
|
}
|
|
returnValue.emit('requestError', error);
|
|
if (returnValue.state === 'active' || returnValue.state === 'pending') {
|
|
returnValue.emit('paused', error);
|
|
returnValue.state = 'stopped';
|
|
returnValue.once('active', function () {
|
|
opts.current_back_off = STARTING_BACK_OFF;
|
|
});
|
|
}
|
|
|
|
opts.current_back_off = opts.current_back_off || STARTING_BACK_OFF;
|
|
opts.current_back_off = opts.back_off_function(opts.current_back_off);
|
|
setTimeout(callback, opts.current_back_off);
|
|
}
|
|
|
|
var setImmediateShim = global.setImmediate || global.setTimeout;
|
|
var MD5_CHUNK_SIZE = 32768;
|
|
|
|
function rawToBase64(raw) {
|
|
return btoa$1(raw);
|
|
}
|
|
|
|
function appendBuffer(buffer, data, start, end) {
|
|
if (start > 0 || end < data.byteLength) {
|
|
// only create a subarray if we really need to
|
|
data = new Uint8Array(data, start,
|
|
Math.min(end, data.byteLength) - start);
|
|
}
|
|
buffer.append(data);
|
|
}
|
|
|
|
function appendString(buffer, data, start, end) {
|
|
if (start > 0 || end < data.length) {
|
|
// only create a substring if we really need to
|
|
data = data.substring(start, end);
|
|
}
|
|
buffer.appendBinary(data);
|
|
}
|
|
|
|
var md5 = toPromise(function (data, callback) {
|
|
var inputIsString = typeof data === 'string';
|
|
var len = inputIsString ? data.length : data.byteLength;
|
|
var chunkSize = Math.min(MD5_CHUNK_SIZE, len);
|
|
var chunks = Math.ceil(len / chunkSize);
|
|
var currentChunk = 0;
|
|
var buffer = inputIsString ? new Md5() : new Md5.ArrayBuffer();
|
|
|
|
var append = inputIsString ? appendString : appendBuffer;
|
|
|
|
function loadNextChunk() {
|
|
var start = currentChunk * chunkSize;
|
|
var end = start + chunkSize;
|
|
currentChunk++;
|
|
if (currentChunk < chunks) {
|
|
append(buffer, data, start, end);
|
|
setImmediateShim(loadNextChunk);
|
|
} else {
|
|
append(buffer, data, start, end);
|
|
var raw = buffer.end(true);
|
|
var base64 = rawToBase64(raw);
|
|
callback(null, base64);
|
|
buffer.destroy();
|
|
}
|
|
}
|
|
loadNextChunk();
|
|
});
|
|
|
|
function sortObjectPropertiesByKey(queryParams) {
|
|
return Object.keys(queryParams).sort(pouchCollate.collate).reduce(function (result, key) {
|
|
result[key] = queryParams[key];
|
|
return result;
|
|
}, {});
|
|
}
|
|
|
|
// Generate a unique id particular to this replication.
|
|
// Not guaranteed to align perfectly with CouchDB's rep ids.
|
|
function generateReplicationId(src, target, opts) {
|
|
var docIds = opts.doc_ids ? opts.doc_ids.sort(pouchCollate.collate) : '';
|
|
var filterFun = opts.filter ? opts.filter.toString() : '';
|
|
var queryParams = '';
|
|
var filterViewName = '';
|
|
|
|
if (opts.filter && opts.query_params) {
|
|
queryParams = JSON.stringify(sortObjectPropertiesByKey(opts.query_params));
|
|
}
|
|
|
|
if (opts.filter && opts.filter === '_view') {
|
|
filterViewName = opts.view.toString();
|
|
}
|
|
|
|
return PouchPromise.all([src.id(), target.id()]).then(function (res) {
|
|
var queryData = res[0] + res[1] + filterFun + filterViewName +
|
|
queryParams + docIds;
|
|
return md5(queryData);
|
|
}).then(function (md5sum) {
|
|
// can't use straight-up md5 alphabet, because
|
|
// the char '/' is interpreted as being for attachments,
|
|
// and + is also not url-safe
|
|
md5sum = md5sum.replace(/\//g, '.').replace(/\+/g, '_');
|
|
return '_local/' + md5sum;
|
|
});
|
|
}
|
|
|
|
function isGenOne(rev) {
|
|
return /^1-/.test(rev);
|
|
}
|
|
|
|
function createBulkGetOpts(diffs) {
|
|
var requests = [];
|
|
Object.keys(diffs).forEach(function (id) {
|
|
var missingRevs = diffs[id].missing;
|
|
missingRevs.forEach(function (missingRev) {
|
|
requests.push({
|
|
id: id,
|
|
rev: missingRev
|
|
});
|
|
});
|
|
});
|
|
|
|
return {
|
|
docs: requests,
|
|
revs: true,
|
|
attachments: true,
|
|
binary: true
|
|
};
|
|
}
|
|
|
|
//
|
|
// Fetch all the documents from the src as described in the "diffs",
|
|
// which is a mapping of docs IDs to revisions. If the state ever
|
|
// changes to "cancelled", then the returned promise will be rejected.
|
|
// Else it will be resolved with a list of fetched documents.
|
|
//
|
|
function getDocs(src, diffs, state) {
|
|
diffs = clone(diffs); // we do not need to modify this
|
|
|
|
var resultDocs = [],
|
|
ok = true;
|
|
|
|
function getAllDocs() {
|
|
|
|
var bulkGetOpts = createBulkGetOpts(diffs);
|
|
|
|
if (!bulkGetOpts.docs.length) { // optimization: skip empty requests
|
|
return;
|
|
}
|
|
|
|
return src.bulkGet(bulkGetOpts).then(function (bulkGetResponse) {
|
|
/* istanbul ignore if */
|
|
if (state.cancelled) {
|
|
throw new Error('cancelled');
|
|
}
|
|
bulkGetResponse.results.forEach(function (bulkGetInfo) {
|
|
bulkGetInfo.docs.forEach(function (doc) {
|
|
if (doc.ok) {
|
|
resultDocs.push(doc.ok);
|
|
} else if (doc.error !== undefined) {
|
|
ok = false;
|
|
}
|
|
// else: when AUTO_COMPACTION is set, docs can be returned which look
|
|
// like this: {"missing":"1-7c3ac256b693c462af8442f992b83696"}
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
function hasAttachments(doc) {
|
|
return doc._attachments && Object.keys(doc._attachments).length > 0;
|
|
}
|
|
|
|
function fetchRevisionOneDocs(ids) {
|
|
// Optimization: fetch gen-1 docs and attachments in
|
|
// a single request using _all_docs
|
|
return src.allDocs({
|
|
keys: ids,
|
|
include_docs: true
|
|
}).then(function (res) {
|
|
if (state.cancelled) {
|
|
throw new Error('cancelled');
|
|
}
|
|
res.rows.forEach(function (row) {
|
|
if (row.deleted || !row.doc || !isGenOne(row.value.rev) ||
|
|
hasAttachments(row.doc)) {
|
|
// if any of these conditions apply, we need to fetch using get()
|
|
return;
|
|
}
|
|
|
|
// the doc we got back from allDocs() is sufficient
|
|
resultDocs.push(row.doc);
|
|
delete diffs[row.id];
|
|
});
|
|
});
|
|
}
|
|
|
|
function getRevisionOneDocs() {
|
|
// filter out the generation 1 docs and get them
|
|
// leaving the non-generation one docs to be got otherwise
|
|
var ids = Object.keys(diffs).filter(function (id) {
|
|
var missing = diffs[id].missing;
|
|
return missing.length === 1 && isGenOne(missing[0]);
|
|
});
|
|
if (ids.length > 0) {
|
|
return fetchRevisionOneDocs(ids);
|
|
}
|
|
}
|
|
|
|
function returnResult() {
|
|
return { ok:ok, docs:resultDocs };
|
|
}
|
|
|
|
return PouchPromise.resolve()
|
|
.then(getRevisionOneDocs)
|
|
.then(getAllDocs)
|
|
.then(returnResult);
|
|
}
|
|
|
|
function replicate(src, target, opts, returnValue, result) {
|
|
var batches = []; // list of batches to be processed
|
|
var currentBatch; // the batch currently being processed
|
|
var pendingBatch = {
|
|
seq: 0,
|
|
changes: [],
|
|
docs: []
|
|
}; // next batch, not yet ready to be processed
|
|
var writingCheckpoint = false; // true while checkpoint is being written
|
|
var changesCompleted = false; // true when all changes received
|
|
var replicationCompleted = false; // true when replication has completed
|
|
var last_seq = 0;
|
|
var continuous = opts.continuous || opts.live || false;
|
|
var batch_size = opts.batch_size || 100;
|
|
var batches_limit = opts.batches_limit || 10;
|
|
var changesPending = false; // true while src.changes is running
|
|
var doc_ids = opts.doc_ids;
|
|
var repId;
|
|
var checkpointer;
|
|
var allErrors = [];
|
|
var changedDocs = [];
|
|
// Like couchdb, every replication gets a unique session id
|
|
var session = uuid();
|
|
|
|
result = result || {
|
|
ok: true,
|
|
start_time: new Date(),
|
|
docs_read: 0,
|
|
docs_written: 0,
|
|
doc_write_failures: 0,
|
|
errors: []
|
|
};
|
|
|
|
var changesOpts = {};
|
|
returnValue.ready(src, target);
|
|
|
|
function initCheckpointer() {
|
|
if (checkpointer) {
|
|
return PouchPromise.resolve();
|
|
}
|
|
return generateReplicationId(src, target, opts).then(function (res) {
|
|
repId = res;
|
|
checkpointer = new Checkpointer(src, target, repId, returnValue);
|
|
});
|
|
}
|
|
|
|
function writeDocs() {
|
|
changedDocs = [];
|
|
|
|
if (currentBatch.docs.length === 0) {
|
|
return;
|
|
}
|
|
var docs = currentBatch.docs;
|
|
return target.bulkDocs({docs: docs, new_edits: false}).then(function (res) {
|
|
if (returnValue.cancelled) {
|
|
completeReplication();
|
|
throw new Error('cancelled');
|
|
}
|
|
var errors = [];
|
|
var errorsById = {};
|
|
res.forEach(function (res) {
|
|
if (res.error) {
|
|
result.doc_write_failures++;
|
|
errors.push(res);
|
|
errorsById[res.id] = res;
|
|
}
|
|
});
|
|
allErrors = allErrors.concat(errors);
|
|
result.docs_written += currentBatch.docs.length - errors.length;
|
|
var non403s = errors.filter(function (error) {
|
|
return error.name !== 'unauthorized' && error.name !== 'forbidden';
|
|
});
|
|
|
|
docs.forEach(function (doc) {
|
|
var error = errorsById[doc._id];
|
|
if (error) {
|
|
returnValue.emit('denied', clone(error));
|
|
} else {
|
|
changedDocs.push(doc);
|
|
}
|
|
});
|
|
|
|
if (non403s.length > 0) {
|
|
var error = new Error('bulkDocs error');
|
|
error.other_errors = errors;
|
|
abortReplication('target.bulkDocs failed to write docs', error);
|
|
throw new Error('bulkWrite partial failure');
|
|
}
|
|
}, function (err) {
|
|
result.doc_write_failures += docs.length;
|
|
throw err;
|
|
});
|
|
}
|
|
|
|
function finishBatch() {
|
|
if (currentBatch.error) {
|
|
throw new Error('There was a problem getting docs.');
|
|
}
|
|
result.last_seq = last_seq = currentBatch.seq;
|
|
var outResult = clone(result);
|
|
if (changedDocs.length) {
|
|
outResult.docs = changedDocs;
|
|
returnValue.emit('change', outResult);
|
|
}
|
|
writingCheckpoint = true;
|
|
return checkpointer.writeCheckpoint(currentBatch.seq,
|
|
session).then(function () {
|
|
writingCheckpoint = false;
|
|
if (returnValue.cancelled) {
|
|
completeReplication();
|
|
throw new Error('cancelled');
|
|
}
|
|
currentBatch = undefined;
|
|
getChanges();
|
|
}).catch(function (err) {
|
|
writingCheckpoint = false;
|
|
abortReplication('writeCheckpoint completed with error', err);
|
|
throw err;
|
|
});
|
|
}
|
|
|
|
function getDiffs() {
|
|
var diff = {};
|
|
currentBatch.changes.forEach(function (change) {
|
|
// Couchbase Sync Gateway emits these, but we can ignore them
|
|
/* istanbul ignore if */
|
|
if (change.id === "_user/") {
|
|
return;
|
|
}
|
|
diff[change.id] = change.changes.map(function (x) {
|
|
return x.rev;
|
|
});
|
|
});
|
|
return target.revsDiff(diff).then(function (diffs) {
|
|
if (returnValue.cancelled) {
|
|
completeReplication();
|
|
throw new Error('cancelled');
|
|
}
|
|
// currentBatch.diffs elements are deleted as the documents are written
|
|
currentBatch.diffs = diffs;
|
|
});
|
|
}
|
|
|
|
function getBatchDocs() {
|
|
return getDocs(src, currentBatch.diffs, returnValue).then(function (got) {
|
|
currentBatch.error = !got.ok;
|
|
got.docs.forEach(function (doc) {
|
|
delete currentBatch.diffs[doc._id];
|
|
result.docs_read++;
|
|
currentBatch.docs.push(doc);
|
|
});
|
|
});
|
|
}
|
|
|
|
function startNextBatch() {
|
|
if (returnValue.cancelled || currentBatch) {
|
|
return;
|
|
}
|
|
if (batches.length === 0) {
|
|
processPendingBatch(true);
|
|
return;
|
|
}
|
|
currentBatch = batches.shift();
|
|
getDiffs()
|
|
.then(getBatchDocs)
|
|
.then(writeDocs)
|
|
.then(finishBatch)
|
|
.then(startNextBatch)
|
|
.catch(function (err) {
|
|
abortReplication('batch processing terminated with error', err);
|
|
});
|
|
}
|
|
|
|
|
|
function processPendingBatch(immediate) {
|
|
if (pendingBatch.changes.length === 0) {
|
|
if (batches.length === 0 && !currentBatch) {
|
|
if ((continuous && changesOpts.live) || changesCompleted) {
|
|
returnValue.state = 'pending';
|
|
returnValue.emit('paused');
|
|
}
|
|
if (changesCompleted) {
|
|
completeReplication();
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
if (
|
|
immediate ||
|
|
changesCompleted ||
|
|
pendingBatch.changes.length >= batch_size
|
|
) {
|
|
batches.push(pendingBatch);
|
|
pendingBatch = {
|
|
seq: 0,
|
|
changes: [],
|
|
docs: []
|
|
};
|
|
if (returnValue.state === 'pending' || returnValue.state === 'stopped') {
|
|
returnValue.state = 'active';
|
|
returnValue.emit('active');
|
|
}
|
|
startNextBatch();
|
|
}
|
|
}
|
|
|
|
|
|
function abortReplication(reason, err) {
|
|
if (replicationCompleted) {
|
|
return;
|
|
}
|
|
if (!err.message) {
|
|
err.message = reason;
|
|
}
|
|
result.ok = false;
|
|
result.status = 'aborting';
|
|
result.errors.push(err);
|
|
allErrors = allErrors.concat(err);
|
|
batches = [];
|
|
pendingBatch = {
|
|
seq: 0,
|
|
changes: [],
|
|
docs: []
|
|
};
|
|
completeReplication();
|
|
}
|
|
|
|
|
|
function completeReplication() {
|
|
if (replicationCompleted) {
|
|
return;
|
|
}
|
|
if (returnValue.cancelled) {
|
|
result.status = 'cancelled';
|
|
if (writingCheckpoint) {
|
|
return;
|
|
}
|
|
}
|
|
result.status = result.status || 'complete';
|
|
result.end_time = new Date();
|
|
result.last_seq = last_seq;
|
|
replicationCompleted = true;
|
|
var non403s = allErrors.filter(function (error) {
|
|
return error.name !== 'unauthorized' && error.name !== 'forbidden';
|
|
});
|
|
if (non403s.length > 0) {
|
|
var error = allErrors.pop();
|
|
if (allErrors.length > 0) {
|
|
error.other_errors = allErrors;
|
|
}
|
|
error.result = result;
|
|
backOff(opts, returnValue, error, function () {
|
|
replicate(src, target, opts, returnValue);
|
|
});
|
|
} else {
|
|
result.errors = allErrors;
|
|
returnValue.emit('complete', result);
|
|
returnValue.removeAllListeners();
|
|
}
|
|
}
|
|
|
|
|
|
function onChange(change) {
|
|
if (returnValue.cancelled) {
|
|
return completeReplication();
|
|
}
|
|
var filter = filterChange(opts)(change);
|
|
if (!filter) {
|
|
return;
|
|
}
|
|
pendingBatch.seq = change.seq;
|
|
pendingBatch.changes.push(change);
|
|
processPendingBatch(changesOpts.live);
|
|
}
|
|
|
|
|
|
function onChangesComplete(changes) {
|
|
changesPending = false;
|
|
if (returnValue.cancelled) {
|
|
return completeReplication();
|
|
}
|
|
|
|
// if no results were returned then we're done,
|
|
// else fetch more
|
|
if (changes.results.length > 0) {
|
|
changesOpts.since = changes.last_seq;
|
|
getChanges();
|
|
} else {
|
|
if (continuous) {
|
|
changesOpts.live = true;
|
|
getChanges();
|
|
} else {
|
|
changesCompleted = true;
|
|
}
|
|
}
|
|
processPendingBatch(true);
|
|
}
|
|
|
|
|
|
function onChangesError(err) {
|
|
changesPending = false;
|
|
/* istanbul ignore if */
|
|
if (returnValue.cancelled) {
|
|
return completeReplication();
|
|
}
|
|
abortReplication('changes rejected', err);
|
|
}
|
|
|
|
|
|
function getChanges() {
|
|
if (!(
|
|
!changesPending &&
|
|
!changesCompleted &&
|
|
batches.length < batches_limit
|
|
)) {
|
|
return;
|
|
}
|
|
changesPending = true;
|
|
function abortChanges() {
|
|
changes.cancel();
|
|
}
|
|
function removeListener() {
|
|
returnValue.removeListener('cancel', abortChanges);
|
|
}
|
|
|
|
if (returnValue._changes) { // remove old changes() and listeners
|
|
returnValue.removeListener('cancel', returnValue._abortChanges);
|
|
returnValue._changes.cancel();
|
|
}
|
|
returnValue.once('cancel', abortChanges);
|
|
|
|
var changes = src.changes(changesOpts)
|
|
.on('change', onChange);
|
|
changes.then(removeListener, removeListener);
|
|
changes.then(onChangesComplete)
|
|
.catch(onChangesError);
|
|
|
|
if (opts.retry) {
|
|
// save for later so we can cancel if necessary
|
|
returnValue._changes = changes;
|
|
returnValue._abortChanges = abortChanges;
|
|
}
|
|
}
|
|
|
|
|
|
function startChanges() {
|
|
initCheckpointer().then(function () {
|
|
if (returnValue.cancelled) {
|
|
completeReplication();
|
|
return;
|
|
}
|
|
return checkpointer.getCheckpoint().then(function (checkpoint) {
|
|
last_seq = checkpoint;
|
|
changesOpts = {
|
|
since: last_seq,
|
|
limit: batch_size,
|
|
batch_size: batch_size,
|
|
style: 'all_docs',
|
|
doc_ids: doc_ids,
|
|
return_docs: true // required so we know when we're done
|
|
};
|
|
if (opts.filter) {
|
|
if (typeof opts.filter !== 'string') {
|
|
// required for the client-side filter in onChange
|
|
changesOpts.include_docs = true;
|
|
} else { // ddoc filter
|
|
changesOpts.filter = opts.filter;
|
|
}
|
|
}
|
|
if ('heartbeat' in opts) {
|
|
changesOpts.heartbeat = opts.heartbeat;
|
|
}
|
|
if ('timeout' in opts) {
|
|
changesOpts.timeout = opts.timeout;
|
|
}
|
|
if (opts.query_params) {
|
|
changesOpts.query_params = opts.query_params;
|
|
}
|
|
if (opts.view) {
|
|
changesOpts.view = opts.view;
|
|
}
|
|
getChanges();
|
|
});
|
|
}).catch(function (err) {
|
|
abortReplication('getCheckpoint rejected with ', err);
|
|
});
|
|
}
|
|
|
|
/* istanbul ignore next */
|
|
function onCheckpointError(err) {
|
|
writingCheckpoint = false;
|
|
abortReplication('writeCheckpoint completed with error', err);
|
|
throw err;
|
|
}
|
|
|
|
/* istanbul ignore if */
|
|
if (returnValue.cancelled) { // cancelled immediately
|
|
completeReplication();
|
|
return;
|
|
}
|
|
|
|
if (!returnValue._addedListeners) {
|
|
returnValue.once('cancel', completeReplication);
|
|
|
|
if (typeof opts.complete === 'function') {
|
|
returnValue.once('error', opts.complete);
|
|
returnValue.once('complete', function (result) {
|
|
opts.complete(null, result);
|
|
});
|
|
}
|
|
returnValue._addedListeners = true;
|
|
}
|
|
|
|
if (typeof opts.since === 'undefined') {
|
|
startChanges();
|
|
} else {
|
|
initCheckpointer().then(function () {
|
|
writingCheckpoint = true;
|
|
return checkpointer.writeCheckpoint(opts.since, session);
|
|
}).then(function () {
|
|
writingCheckpoint = false;
|
|
/* istanbul ignore if */
|
|
if (returnValue.cancelled) {
|
|
completeReplication();
|
|
return;
|
|
}
|
|
last_seq = opts.since;
|
|
startChanges();
|
|
}).catch(onCheckpointError);
|
|
}
|
|
}
|
|
|
|
// We create a basic promise so the caller can cancel the replication possibly
|
|
// before we have actually started listening to changes etc
|
|
inherits(Replication, events.EventEmitter);
|
|
function Replication() {
|
|
events.EventEmitter.call(this);
|
|
this.cancelled = false;
|
|
this.state = 'pending';
|
|
var self = this;
|
|
var promise = new PouchPromise(function (fulfill, reject) {
|
|
self.once('complete', fulfill);
|
|
self.once('error', reject);
|
|
});
|
|
self.then = function (resolve, reject) {
|
|
return promise.then(resolve, reject);
|
|
};
|
|
self.catch = function (reject) {
|
|
return promise.catch(reject);
|
|
};
|
|
// As we allow error handling via "error" event as well,
|
|
// put a stub in here so that rejecting never throws UnhandledError.
|
|
self.catch(function () {});
|
|
}
|
|
|
|
Replication.prototype.cancel = function () {
|
|
this.cancelled = true;
|
|
this.state = 'cancelled';
|
|
this.emit('cancel');
|
|
};
|
|
|
|
Replication.prototype.ready = function (src, target) {
|
|
var self = this;
|
|
if (self._readyCalled) {
|
|
return;
|
|
}
|
|
self._readyCalled = true;
|
|
|
|
function onDestroy() {
|
|
self.cancel();
|
|
}
|
|
src.once('destroyed', onDestroy);
|
|
target.once('destroyed', onDestroy);
|
|
function cleanup() {
|
|
src.removeListener('destroyed', onDestroy);
|
|
target.removeListener('destroyed', onDestroy);
|
|
}
|
|
self.once('complete', cleanup);
|
|
};
|
|
|
|
function toPouch(db, opts) {
|
|
var PouchConstructor = opts.PouchConstructor;
|
|
if (typeof db === 'string') {
|
|
return new PouchConstructor(db, opts);
|
|
} else {
|
|
return db;
|
|
}
|
|
}
|
|
|
|
function replicateWrapper(src, target, opts, callback) {
|
|
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
if (typeof opts === 'undefined') {
|
|
opts = {};
|
|
}
|
|
|
|
if (opts.doc_ids && !Array.isArray(opts.doc_ids)) {
|
|
throw createError(BAD_REQUEST,
|
|
"`doc_ids` filter parameter is not a list.");
|
|
}
|
|
|
|
opts.complete = callback;
|
|
opts = clone(opts);
|
|
opts.continuous = opts.continuous || opts.live;
|
|
opts.retry = ('retry' in opts) ? opts.retry : false;
|
|
/*jshint validthis:true */
|
|
opts.PouchConstructor = opts.PouchConstructor || this;
|
|
var replicateRet = new Replication(opts);
|
|
var srcPouch = toPouch(src, opts);
|
|
var targetPouch = toPouch(target, opts);
|
|
replicate(srcPouch, targetPouch, opts, replicateRet);
|
|
return replicateRet;
|
|
}
|
|
|
|
var replication = {
|
|
replicate: replicateWrapper,
|
|
toPouch: toPouch
|
|
};
|
|
|
|
var replicate$1 = replication.replicate;
|
|
inherits(Sync, events.EventEmitter);
|
|
function sync(src, target, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
if (typeof opts === 'undefined') {
|
|
opts = {};
|
|
}
|
|
opts = clone(opts);
|
|
/*jshint validthis:true */
|
|
opts.PouchConstructor = opts.PouchConstructor || this;
|
|
src = replication.toPouch(src, opts);
|
|
target = replication.toPouch(target, opts);
|
|
return new Sync(src, target, opts, callback);
|
|
}
|
|
|
|
function Sync(src, target, opts, callback) {
|
|
var self = this;
|
|
this.canceled = false;
|
|
|
|
var optsPush = opts.push ? jsExtend.extend({}, opts, opts.push) : opts;
|
|
var optsPull = opts.pull ? jsExtend.extend({}, opts, opts.pull) : opts;
|
|
|
|
this.push = replicate$1(src, target, optsPush);
|
|
this.pull = replicate$1(target, src, optsPull);
|
|
|
|
this.pushPaused = true;
|
|
this.pullPaused = true;
|
|
|
|
function pullChange(change) {
|
|
self.emit('change', {
|
|
direction: 'pull',
|
|
change: change
|
|
});
|
|
}
|
|
function pushChange(change) {
|
|
self.emit('change', {
|
|
direction: 'push',
|
|
change: change
|
|
});
|
|
}
|
|
function pushDenied(doc) {
|
|
self.emit('denied', {
|
|
direction: 'push',
|
|
doc: doc
|
|
});
|
|
}
|
|
function pullDenied(doc) {
|
|
self.emit('denied', {
|
|
direction: 'pull',
|
|
doc: doc
|
|
});
|
|
}
|
|
function pushPaused() {
|
|
self.pushPaused = true;
|
|
if (self.pullPaused) {
|
|
self.emit('paused');
|
|
}
|
|
}
|
|
function pullPaused() {
|
|
self.pullPaused = true;
|
|
if (self.pushPaused) {
|
|
self.emit('paused');
|
|
}
|
|
}
|
|
function pushActive() {
|
|
self.pushPaused = false;
|
|
if (self.pullPaused) {
|
|
self.emit('active', {
|
|
direction: 'push'
|
|
});
|
|
}
|
|
}
|
|
function pullActive() {
|
|
self.pullPaused = false;
|
|
/* istanbul ignore if */
|
|
if (self.pushPaused) {
|
|
self.emit('active', {
|
|
direction: 'pull'
|
|
});
|
|
}
|
|
}
|
|
|
|
var removed = {};
|
|
|
|
function removeAll(type) { // type is 'push' or 'pull'
|
|
return function (event, func) {
|
|
var isChange = event === 'change' &&
|
|
(func === pullChange || func === pushChange);
|
|
var isDenied = event === 'denied' &&
|
|
(func === pullDenied || func === pushDenied);
|
|
var isPaused = event === 'paused' &&
|
|
(func === pullPaused || func === pushPaused);
|
|
var isActive = event === 'active' &&
|
|
(func === pullActive || func === pushActive);
|
|
|
|
if (isChange || isDenied || isPaused || isActive) {
|
|
if (!(event in removed)) {
|
|
removed[event] = {};
|
|
}
|
|
removed[event][type] = true;
|
|
if (Object.keys(removed[event]).length === 2) {
|
|
// both push and pull have asked to be removed
|
|
self.removeAllListeners(event);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
if (opts.live) {
|
|
this.push.on('complete', self.pull.cancel.bind(self.pull));
|
|
this.pull.on('complete', self.push.cancel.bind(self.push));
|
|
}
|
|
|
|
this.on('newListener', function (event) {
|
|
if (event === 'change') {
|
|
self.pull.on('change', pullChange);
|
|
self.push.on('change', pushChange);
|
|
} else if (event === 'denied') {
|
|
self.pull.on('denied', pullDenied);
|
|
self.push.on('denied', pushDenied);
|
|
} else if (event === 'active') {
|
|
self.pull.on('active', pullActive);
|
|
self.push.on('active', pushActive);
|
|
} else if (event === 'paused') {
|
|
self.pull.on('paused', pullPaused);
|
|
self.push.on('paused', pushPaused);
|
|
}
|
|
});
|
|
|
|
this.on('removeListener', function (event) {
|
|
if (event === 'change') {
|
|
self.pull.removeListener('change', pullChange);
|
|
self.push.removeListener('change', pushChange);
|
|
} else if (event === 'denied') {
|
|
self.pull.removeListener('denied', pullDenied);
|
|
self.push.removeListener('denied', pushDenied);
|
|
} else if (event === 'active') {
|
|
self.pull.removeListener('active', pullActive);
|
|
self.push.removeListener('active', pushActive);
|
|
} else if (event === 'paused') {
|
|
self.pull.removeListener('paused', pullPaused);
|
|
self.push.removeListener('paused', pushPaused);
|
|
}
|
|
});
|
|
|
|
this.pull.on('removeListener', removeAll('pull'));
|
|
this.push.on('removeListener', removeAll('push'));
|
|
|
|
var promise = PouchPromise.all([
|
|
this.push,
|
|
this.pull
|
|
]).then(function (resp) {
|
|
var out = {
|
|
push: resp[0],
|
|
pull: resp[1]
|
|
};
|
|
self.emit('complete', out);
|
|
if (callback) {
|
|
callback(null, out);
|
|
}
|
|
self.removeAllListeners();
|
|
return out;
|
|
}, function (err) {
|
|
self.cancel();
|
|
if (callback) {
|
|
// if there's a callback, then the callback can receive
|
|
// the error event
|
|
callback(err);
|
|
} else {
|
|
// if there's no callback, then we're safe to emit an error
|
|
// event, which would otherwise throw an unhandled error
|
|
// due to 'error' being a special event in EventEmitters
|
|
self.emit('error', err);
|
|
}
|
|
self.removeAllListeners();
|
|
if (callback) {
|
|
// no sense throwing if we're already emitting an 'error' event
|
|
throw err;
|
|
}
|
|
});
|
|
|
|
this.then = function (success, err) {
|
|
return promise.then(success, err);
|
|
};
|
|
|
|
this.catch = function (err) {
|
|
return promise.catch(err);
|
|
};
|
|
}
|
|
|
|
Sync.prototype.cancel = function () {
|
|
if (!this.canceled) {
|
|
this.canceled = true;
|
|
this.push.cancel();
|
|
this.pull.cancel();
|
|
}
|
|
};
|
|
|
|
function b64ToBluffer(b64, type) {
|
|
return binStringToBluffer(atob$1(b64), type);
|
|
}
|
|
|
|
//Can't find original post, but this is close
|
|
//http://stackoverflow.com/questions/6965107/ (continues on next line)
|
|
//converting-between-strings-and-arraybuffers
|
|
function arrayBufferToBinaryString(buffer) {
|
|
var binary = '';
|
|
var bytes = new Uint8Array(buffer);
|
|
var length = bytes.byteLength;
|
|
for (var i = 0; i < length; i++) {
|
|
binary += String.fromCharCode(bytes[i]);
|
|
}
|
|
return binary;
|
|
}
|
|
|
|
// shim for browsers that don't support it
|
|
function readAsBinaryString(blob, callback) {
|
|
if (typeof FileReader === 'undefined') {
|
|
// fix for Firefox in a web worker
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=901097
|
|
return callback(arrayBufferToBinaryString(
|
|
new FileReaderSync().readAsArrayBuffer(blob)));
|
|
}
|
|
|
|
var reader = new FileReader();
|
|
var hasBinaryString = typeof reader.readAsBinaryString === 'function';
|
|
reader.onloadend = function (e) {
|
|
var result = e.target.result || '';
|
|
if (hasBinaryString) {
|
|
return callback(result);
|
|
}
|
|
callback(arrayBufferToBinaryString(result));
|
|
};
|
|
if (hasBinaryString) {
|
|
reader.readAsBinaryString(blob);
|
|
} else {
|
|
reader.readAsArrayBuffer(blob);
|
|
}
|
|
}
|
|
|
|
function blobToBase64(blobOrBuffer) {
|
|
return new PouchPromise(function (resolve) {
|
|
readAsBinaryString(blobOrBuffer, function (bin) {
|
|
resolve(btoa$1(bin));
|
|
});
|
|
});
|
|
}
|
|
|
|
function flatten(arrs) {
|
|
var res = [];
|
|
for (var i = 0, len = arrs.length; i < len; i++) {
|
|
res = res.concat(arrs[i]);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
var CHANGES_BATCH_SIZE = 25;
|
|
var MAX_SIMULTANEOUS_REVS = 50;
|
|
|
|
var supportsBulkGetMap = {};
|
|
|
|
// according to http://stackoverflow.com/a/417184/680742,
|
|
// the de facto URL length limit is 2000 characters.
|
|
// but since most of our measurements don't take the full
|
|
// URL into account, we fudge it a bit.
|
|
// TODO: we could measure the full URL to enforce exactly 2000 chars
|
|
var MAX_URL_LENGTH = 1800;
|
|
|
|
var log$1 = debug('pouchdb:http');
|
|
function readAttachmentsAsBlobOrBuffer(row) {
|
|
var atts = row.doc && row.doc._attachments;
|
|
if (!atts) {
|
|
return;
|
|
}
|
|
Object.keys(atts).forEach(function (filename) {
|
|
var att = atts[filename];
|
|
att.data = b64ToBluffer(att.data, att.content_type);
|
|
});
|
|
}
|
|
|
|
function encodeDocId(id) {
|
|
if (/^_design/.test(id)) {
|
|
return '_design/' + encodeURIComponent(id.slice(8));
|
|
}
|
|
if (/^_local/.test(id)) {
|
|
return '_local/' + encodeURIComponent(id.slice(7));
|
|
}
|
|
return encodeURIComponent(id);
|
|
}
|
|
|
|
function preprocessAttachments(doc) {
|
|
if (!doc._attachments || !Object.keys(doc._attachments)) {
|
|
return PouchPromise.resolve();
|
|
}
|
|
|
|
return PouchPromise.all(Object.keys(doc._attachments).map(function (key) {
|
|
var attachment = doc._attachments[key];
|
|
if (attachment.data && typeof attachment.data !== 'string') {
|
|
return blobToBase64(attachment.data).then(function (b64) {
|
|
attachment.data = b64;
|
|
});
|
|
}
|
|
}));
|
|
}
|
|
|
|
// Get all the information you possibly can about the URI given by name and
|
|
// return it as a suitable object.
|
|
function getHost(name) {
|
|
// Prase the URI into all its little bits
|
|
var uri = parseUri(name);
|
|
|
|
// Store the user and password as a separate auth object
|
|
if (uri.user || uri.password) {
|
|
uri.auth = {username: uri.user, password: uri.password};
|
|
}
|
|
|
|
// Split the path part of the URI into parts using '/' as the delimiter
|
|
// after removing any leading '/' and any trailing '/'
|
|
var parts = uri.path.replace(/(^\/|\/$)/g, '').split('/');
|
|
|
|
// Store the first part as the database name and remove it from the parts
|
|
// array
|
|
uri.db = parts.pop();
|
|
// Prevent double encoding of URI component
|
|
if (uri.db.indexOf('%') === -1) {
|
|
uri.db = encodeURIComponent(uri.db);
|
|
}
|
|
|
|
// Restore the path by joining all the remaining parts (all the parts
|
|
// except for the database name) with '/'s
|
|
uri.path = parts.join('/');
|
|
|
|
return uri;
|
|
}
|
|
|
|
// Generate a URL with the host data given by opts and the given path
|
|
function genDBUrl(opts, path) {
|
|
return genUrl(opts, opts.db + '/' + path);
|
|
}
|
|
|
|
// Generate a URL with the host data given by opts and the given path
|
|
function genUrl(opts, path) {
|
|
// If the host already has a path, then we need to have a path delimiter
|
|
// Otherwise, the path delimiter is the empty string
|
|
var pathDel = !opts.path ? '' : '/';
|
|
|
|
// If the host already has a path, then we need to have a path delimiter
|
|
// Otherwise, the path delimiter is the empty string
|
|
return opts.protocol + '://' + opts.host +
|
|
(opts.port ? (':' + opts.port) : '') +
|
|
'/' + opts.path + pathDel + path;
|
|
}
|
|
|
|
function paramsToStr(params) {
|
|
return '?' + Object.keys(params).map(function (k) {
|
|
return k + '=' + encodeURIComponent(params[k]);
|
|
}).join('&');
|
|
}
|
|
|
|
// Implements the PouchDB API for dealing with CouchDB instances over HTTP
|
|
function HttpPouch(opts, callback) {
|
|
// The functions that will be publicly available for HttpPouch
|
|
var api = this;
|
|
|
|
// Parse the URI given by opts.name into an easy-to-use object
|
|
var getHostFun = getHost;
|
|
|
|
// TODO: this seems to only be used by yarong for the Thali project.
|
|
// Verify whether or not it's still needed.
|
|
/* istanbul ignore if */
|
|
if (opts.getHost) {
|
|
getHostFun = opts.getHost;
|
|
}
|
|
|
|
var host = getHostFun(opts.name, opts);
|
|
var dbUrl = genDBUrl(host, '');
|
|
|
|
opts = clone(opts);
|
|
var ajaxOpts = opts.ajax || {};
|
|
|
|
api.getUrl = function () { return dbUrl; };
|
|
api.getHeaders = function () { return ajaxOpts.headers || {}; };
|
|
|
|
if (opts.auth || host.auth) {
|
|
var nAuth = opts.auth || host.auth;
|
|
var str = nAuth.username + ':' + nAuth.password;
|
|
var token = btoa$1(unescape(encodeURIComponent(str)));
|
|
ajaxOpts.headers = ajaxOpts.headers || {};
|
|
ajaxOpts.headers.Authorization = 'Basic ' + token;
|
|
}
|
|
|
|
function ajax(userOpts, options, callback) {
|
|
var reqAjax = userOpts.ajax || {};
|
|
var reqOpts = jsExtend.extend(clone(ajaxOpts), reqAjax, options);
|
|
log$1(reqOpts.method + ' ' + reqOpts.url);
|
|
return utils.ajax(reqOpts, callback);
|
|
}
|
|
|
|
function ajaxPromise(userOpts, opts) {
|
|
return new PouchPromise(function (resolve, reject) {
|
|
ajax(userOpts, opts, function (err, res) {
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
resolve(res);
|
|
});
|
|
});
|
|
}
|
|
|
|
function adapterFun$$(name, fun) {
|
|
return adapterFun(name, getArguments(function (args) {
|
|
setup().then(function () {
|
|
return fun.apply(this, args);
|
|
}).catch(function (e) {
|
|
var callback = args.pop();
|
|
callback(e);
|
|
});
|
|
}));
|
|
}
|
|
|
|
var setupPromise;
|
|
|
|
function setup() {
|
|
// TODO: Remove `skipSetup` in favor of `skip_setup` in a future release
|
|
if (opts.skipSetup || opts.skip_setup) {
|
|
return PouchPromise.resolve();
|
|
}
|
|
|
|
// If there is a setup in process or previous successful setup
|
|
// done then we will use that
|
|
// If previous setups have been rejected we will try again
|
|
if (setupPromise) {
|
|
return setupPromise;
|
|
}
|
|
|
|
var checkExists = {method: 'GET', url: dbUrl};
|
|
setupPromise = ajaxPromise({}, checkExists).catch(function (err) {
|
|
if (err && err.status && err.status === 404) {
|
|
// Doesnt exist, create it
|
|
explainError(404, 'PouchDB is just detecting if the remote exists.');
|
|
return ajaxPromise({}, {method: 'PUT', url: dbUrl});
|
|
} else {
|
|
return PouchPromise.reject(err);
|
|
}
|
|
}).catch(function (err) {
|
|
// If we try to create a database that already exists
|
|
if (err && err.status && err.status === 412) {
|
|
return true;
|
|
}
|
|
return PouchPromise.reject(err);
|
|
});
|
|
|
|
setupPromise.catch(function () {
|
|
setupPromise = null;
|
|
});
|
|
|
|
return setupPromise;
|
|
}
|
|
|
|
setTimeout(function () {
|
|
callback(null, api);
|
|
});
|
|
|
|
api.type = function () {
|
|
return 'http';
|
|
};
|
|
|
|
api.id = adapterFun$$('id', function (callback) {
|
|
ajax({}, {method: 'GET', url: genUrl(host, '')}, function (err, result) {
|
|
var uuid = (result && result.uuid) ?
|
|
(result.uuid + host.db) : genDBUrl(host, '');
|
|
callback(null, uuid);
|
|
});
|
|
});
|
|
|
|
api.request = adapterFun$$('request', function (options, callback) {
|
|
options.url = genDBUrl(host, options.url);
|
|
ajax({}, options, callback);
|
|
});
|
|
|
|
// Sends a POST request to the host calling the couchdb _compact function
|
|
// version: The version of CouchDB it is running
|
|
api.compact = adapterFun$$('compact', function (opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
opts = clone(opts);
|
|
ajax(opts, {
|
|
url: genDBUrl(host, '_compact'),
|
|
method: 'POST'
|
|
}, function () {
|
|
function ping() {
|
|
api.info(function (err, res) {
|
|
if (res && !res.compact_running) {
|
|
callback(null, {ok: true});
|
|
} else {
|
|
setTimeout(ping, opts.interval || 200);
|
|
}
|
|
});
|
|
}
|
|
// Ping the http if it's finished compaction
|
|
ping();
|
|
});
|
|
});
|
|
|
|
api.bulkGet = adapterFun('bulkGet', function (opts, callback) {
|
|
var self = this;
|
|
|
|
function doBulkGet(cb) {
|
|
var params = {};
|
|
if (opts.revs) {
|
|
params.revs = true;
|
|
}
|
|
if (opts.attachments) {
|
|
params.attachments = true;
|
|
}
|
|
ajax({}, {
|
|
url: genDBUrl(host, '_bulk_get' + paramsToStr(params)),
|
|
method: 'POST',
|
|
body: { docs: opts.docs}
|
|
}, cb);
|
|
}
|
|
|
|
function doBulkGetShim() {
|
|
// avoid "url too long error" by splitting up into multiple requests
|
|
var batchSize = MAX_SIMULTANEOUS_REVS;
|
|
var numBatches = Math.ceil(opts.docs.length / batchSize);
|
|
var numDone = 0;
|
|
var results = new Array(numBatches);
|
|
|
|
function onResult(batchNum) {
|
|
return function (err, res) {
|
|
// err is impossible because shim returns a list of errs in that case
|
|
results[batchNum] = res.results;
|
|
if (++numDone === numBatches) {
|
|
callback(null, {results: flatten(results)});
|
|
}
|
|
};
|
|
}
|
|
|
|
for (var i = 0; i < numBatches; i++) {
|
|
var subOpts = pick(opts, ['revs', 'attachments']);
|
|
subOpts.ajax = ajaxOpts;
|
|
subOpts.docs = opts.docs.slice(i * batchSize,
|
|
Math.min(opts.docs.length, (i + 1) * batchSize));
|
|
bulkGet(self, subOpts, onResult(i));
|
|
}
|
|
}
|
|
|
|
// mark the whole database as either supporting or not supporting _bulk_get
|
|
var dbUrl = genUrl(host, '');
|
|
var supportsBulkGet = supportsBulkGetMap[dbUrl];
|
|
|
|
if (typeof supportsBulkGet !== 'boolean') {
|
|
// check if this database supports _bulk_get
|
|
doBulkGet(function (err, res) {
|
|
/* istanbul ignore else */
|
|
if (err) {
|
|
var status = Math.floor(err.status / 100);
|
|
/* istanbul ignore else */
|
|
if (status === 4 || status === 5) { // 40x or 50x
|
|
supportsBulkGetMap[dbUrl] = false;
|
|
explainError(
|
|
err.status,
|
|
'PouchDB is just detecting if the remote ' +
|
|
'supports the _bulk_get API.'
|
|
);
|
|
doBulkGetShim();
|
|
} else {
|
|
callback(err);
|
|
}
|
|
} else {
|
|
supportsBulkGetMap[dbUrl] = true;
|
|
callback(null, res);
|
|
}
|
|
});
|
|
} else if (supportsBulkGet) {
|
|
/* istanbul ignore next */
|
|
doBulkGet(callback);
|
|
} else {
|
|
doBulkGetShim();
|
|
}
|
|
});
|
|
|
|
// Calls GET on the host, which gets back a JSON string containing
|
|
// couchdb: A welcome string
|
|
// version: The version of CouchDB it is running
|
|
api._info = function (callback) {
|
|
setup().then(function () {
|
|
ajax({}, {
|
|
method: 'GET',
|
|
url: genDBUrl(host, '')
|
|
}, function (err, res) {
|
|
/* istanbul ignore next */
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
res.host = genDBUrl(host, '');
|
|
callback(null, res);
|
|
});
|
|
}).catch(callback);
|
|
};
|
|
|
|
// Get the document with the given id from the database given by host.
|
|
// The id could be solely the _id in the database, or it may be a
|
|
// _design/ID or _local/ID path
|
|
api.get = adapterFun$$('get', function (id, opts, callback) {
|
|
// If no options were given, set the callback to the second parameter
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
opts = clone(opts);
|
|
|
|
// List of parameters to add to the GET request
|
|
var params = {};
|
|
|
|
if (opts.revs) {
|
|
params.revs = true;
|
|
}
|
|
|
|
if (opts.revs_info) {
|
|
params.revs_info = true;
|
|
}
|
|
|
|
if (opts.open_revs) {
|
|
if (opts.open_revs !== "all") {
|
|
opts.open_revs = JSON.stringify(opts.open_revs);
|
|
}
|
|
params.open_revs = opts.open_revs;
|
|
}
|
|
|
|
if (opts.rev) {
|
|
params.rev = opts.rev;
|
|
}
|
|
|
|
if (opts.conflicts) {
|
|
params.conflicts = opts.conflicts;
|
|
}
|
|
|
|
id = encodeDocId(id);
|
|
|
|
// Set the options for the ajax call
|
|
var options = {
|
|
method: 'GET',
|
|
url: genDBUrl(host, id + paramsToStr(params))
|
|
};
|
|
|
|
function fetchAttachments(doc) {
|
|
var atts = doc._attachments;
|
|
var filenames = atts && Object.keys(atts);
|
|
if (!atts || !filenames.length) {
|
|
return;
|
|
}
|
|
// we fetch these manually in separate XHRs, because
|
|
// Sync Gateway would normally send it back as multipart/mixed,
|
|
// which we cannot parse. Also, this is more efficient than
|
|
// receiving attachments as base64-encoded strings.
|
|
return PouchPromise.all(filenames.map(function (filename) {
|
|
var att = atts[filename];
|
|
var path = encodeDocId(doc._id) + '/' + encodeAttachmentId(filename) +
|
|
'?rev=' + doc._rev;
|
|
return ajaxPromise(opts, {
|
|
method: 'GET',
|
|
url: genDBUrl(host, path),
|
|
binary: true
|
|
}).then(function (blob) {
|
|
if (opts.binary) {
|
|
return blob;
|
|
}
|
|
return blobToBase64(blob);
|
|
}).then(function (data) {
|
|
delete att.stub;
|
|
delete att.length;
|
|
att.data = data;
|
|
});
|
|
}));
|
|
}
|
|
|
|
function fetchAllAttachments(docOrDocs) {
|
|
if (Array.isArray(docOrDocs)) {
|
|
return PouchPromise.all(docOrDocs.map(function (doc) {
|
|
if (doc.ok) {
|
|
return fetchAttachments(doc.ok);
|
|
}
|
|
}));
|
|
}
|
|
return fetchAttachments(docOrDocs);
|
|
}
|
|
|
|
ajaxPromise(opts, options).then(function (res) {
|
|
return PouchPromise.resolve().then(function () {
|
|
if (opts.attachments) {
|
|
return fetchAllAttachments(res);
|
|
}
|
|
}).then(function () {
|
|
callback(null, res);
|
|
});
|
|
}).catch(callback);
|
|
});
|
|
|
|
// Delete the document given by doc from the database given by host.
|
|
api.remove = adapterFun$$('remove',
|
|
function (docOrId, optsOrRev, opts, callback) {
|
|
var doc;
|
|
if (typeof optsOrRev === 'string') {
|
|
// id, rev, opts, callback style
|
|
doc = {
|
|
_id: docOrId,
|
|
_rev: optsOrRev
|
|
};
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
} else {
|
|
// doc, opts, callback style
|
|
doc = docOrId;
|
|
if (typeof optsOrRev === 'function') {
|
|
callback = optsOrRev;
|
|
opts = {};
|
|
} else {
|
|
callback = opts;
|
|
opts = optsOrRev;
|
|
}
|
|
}
|
|
|
|
var rev = (doc._rev || opts.rev);
|
|
|
|
// Delete the document
|
|
ajax(opts, {
|
|
method: 'DELETE',
|
|
url: genDBUrl(host, encodeDocId(doc._id)) + '?rev=' + rev
|
|
}, callback);
|
|
});
|
|
|
|
function encodeAttachmentId(attachmentId) {
|
|
return attachmentId.split("/").map(encodeURIComponent).join("/");
|
|
}
|
|
|
|
// Get the attachment
|
|
api.getAttachment =
|
|
adapterFun$$('getAttachment', function (docId, attachmentId, opts,
|
|
callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
var params = opts.rev ? ('?rev=' + opts.rev) : '';
|
|
var url = genDBUrl(host, encodeDocId(docId)) + '/' +
|
|
encodeAttachmentId(attachmentId) + params;
|
|
ajax(opts, {
|
|
method: 'GET',
|
|
url: url,
|
|
binary: true
|
|
}, callback);
|
|
});
|
|
|
|
// Remove the attachment given by the id and rev
|
|
api.removeAttachment =
|
|
adapterFun$$('removeAttachment', function (docId, attachmentId, rev,
|
|
callback) {
|
|
|
|
var url = genDBUrl(host, encodeDocId(docId) + '/' +
|
|
encodeAttachmentId(attachmentId)) + '?rev=' + rev;
|
|
|
|
ajax({}, {
|
|
method: 'DELETE',
|
|
url: url
|
|
}, callback);
|
|
});
|
|
|
|
// Add the attachment given by blob and its contentType property
|
|
// to the document with the given id, the revision given by rev, and
|
|
// add it to the database given by host.
|
|
api.putAttachment =
|
|
adapterFun$$('putAttachment', function (docId, attachmentId, rev, blob,
|
|
type, callback) {
|
|
if (typeof type === 'function') {
|
|
callback = type;
|
|
type = blob;
|
|
blob = rev;
|
|
rev = null;
|
|
}
|
|
var id = encodeDocId(docId) + '/' + encodeAttachmentId(attachmentId);
|
|
var url = genDBUrl(host, id);
|
|
if (rev) {
|
|
url += '?rev=' + rev;
|
|
}
|
|
|
|
if (typeof blob === 'string') {
|
|
// input is assumed to be a base64 string
|
|
var binary;
|
|
try {
|
|
binary = atob$1(blob);
|
|
} catch (err) {
|
|
return callback(createError(BAD_ARG,
|
|
'Attachment is not a valid base64 string'));
|
|
}
|
|
blob = binary ? binStringToBluffer(binary, type) : '';
|
|
}
|
|
|
|
var opts = {
|
|
headers: {'Content-Type': type},
|
|
method: 'PUT',
|
|
url: url,
|
|
processData: false,
|
|
body: blob,
|
|
timeout: ajaxOpts.timeout || 60000
|
|
};
|
|
// Add the attachment
|
|
ajax({}, opts, callback);
|
|
});
|
|
|
|
// Update/create multiple documents given by req in the database
|
|
// given by host.
|
|
api._bulkDocs = function (req, opts, callback) {
|
|
// If new_edits=false then it prevents the database from creating
|
|
// new revision numbers for the documents. Instead it just uses
|
|
// the old ones. This is used in database replication.
|
|
req.new_edits = opts.new_edits;
|
|
|
|
setup().then(function () {
|
|
return PouchPromise.all(req.docs.map(preprocessAttachments));
|
|
}).then(function () {
|
|
// Update/create the documents
|
|
ajax(opts, {
|
|
method: 'POST',
|
|
url: genDBUrl(host, '_bulk_docs'),
|
|
body: req
|
|
}, function (err, results) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
results.forEach(function (result) {
|
|
result.ok = true; // smooths out cloudant not adding this
|
|
});
|
|
callback(null, results);
|
|
});
|
|
}).catch(callback);
|
|
};
|
|
|
|
// Get a listing of the documents in the database given
|
|
// by host and ordered by increasing id.
|
|
api.allDocs = adapterFun$$('allDocs', function (opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
opts = clone(opts);
|
|
|
|
// List of parameters to add to the GET request
|
|
var params = {};
|
|
var body;
|
|
var method = 'GET';
|
|
|
|
if (opts.conflicts) {
|
|
params.conflicts = true;
|
|
}
|
|
|
|
if (opts.descending) {
|
|
params.descending = true;
|
|
}
|
|
|
|
if (opts.include_docs) {
|
|
params.include_docs = true;
|
|
}
|
|
|
|
// added in CouchDB 1.6.0
|
|
if (opts.attachments) {
|
|
params.attachments = true;
|
|
}
|
|
|
|
if (opts.key) {
|
|
params.key = JSON.stringify(opts.key);
|
|
}
|
|
|
|
if (opts.start_key) {
|
|
opts.startkey = opts.start_key;
|
|
}
|
|
|
|
if (opts.startkey) {
|
|
params.startkey = JSON.stringify(opts.startkey);
|
|
}
|
|
|
|
if (opts.end_key) {
|
|
opts.endkey = opts.end_key;
|
|
}
|
|
|
|
if (opts.endkey) {
|
|
params.endkey = JSON.stringify(opts.endkey);
|
|
}
|
|
|
|
if (typeof opts.inclusive_end !== 'undefined') {
|
|
params.inclusive_end = !!opts.inclusive_end;
|
|
}
|
|
|
|
if (typeof opts.limit !== 'undefined') {
|
|
params.limit = opts.limit;
|
|
}
|
|
|
|
if (typeof opts.skip !== 'undefined') {
|
|
params.skip = opts.skip;
|
|
}
|
|
|
|
var paramStr = paramsToStr(params);
|
|
|
|
if (typeof opts.keys !== 'undefined') {
|
|
|
|
var keysAsString =
|
|
'keys=' + encodeURIComponent(JSON.stringify(opts.keys));
|
|
if (keysAsString.length + paramStr.length + 1 <= MAX_URL_LENGTH) {
|
|
// If the keys are short enough, do a GET. we do this to work around
|
|
// Safari not understanding 304s on POSTs (see issue #1239)
|
|
paramStr += '&' + keysAsString;
|
|
} else {
|
|
// If keys are too long, issue a POST request to circumvent GET
|
|
// query string limits
|
|
// see http://wiki.apache.org/couchdb/HTTP_view_API#Querying_Options
|
|
method = 'POST';
|
|
body = {keys: opts.keys};
|
|
}
|
|
}
|
|
|
|
// Get the document listing
|
|
ajaxPromise(opts, {
|
|
method: method,
|
|
url: genDBUrl(host, '_all_docs' + paramStr),
|
|
body: body
|
|
}).then(function (res) {
|
|
if (opts.include_docs && opts.attachments && opts.binary) {
|
|
res.rows.forEach(readAttachmentsAsBlobOrBuffer);
|
|
}
|
|
callback(null, res);
|
|
}).catch(callback);
|
|
});
|
|
|
|
// Get a list of changes made to documents in the database given by host.
|
|
// TODO According to the README, there should be two other methods here,
|
|
// api.changes.addListener and api.changes.removeListener.
|
|
api._changes = function (opts) {
|
|
|
|
// We internally page the results of a changes request, this means
|
|
// if there is a large set of changes to be returned we can start
|
|
// processing them quicker instead of waiting on the entire
|
|
// set of changes to return and attempting to process them at once
|
|
var batchSize = 'batch_size' in opts ? opts.batch_size : CHANGES_BATCH_SIZE;
|
|
|
|
opts = clone(opts);
|
|
opts.timeout = ('timeout' in opts) ? opts.timeout :
|
|
('timeout' in ajaxOpts) ? ajaxOpts.timeout :
|
|
30 * 1000;
|
|
|
|
// We give a 5 second buffer for CouchDB changes to respond with
|
|
// an ok timeout (if a timeout it set)
|
|
var params = opts.timeout ? {timeout: opts.timeout - (5 * 1000)} : {};
|
|
var limit = (typeof opts.limit !== 'undefined') ? opts.limit : false;
|
|
var returnDocs;
|
|
if ('return_docs' in opts) {
|
|
returnDocs = opts.return_docs;
|
|
} else if ('returnDocs' in opts) {
|
|
// TODO: Remove 'returnDocs' in favor of 'return_docs' in a future release
|
|
returnDocs = opts.returnDocs;
|
|
} else {
|
|
returnDocs = true;
|
|
}
|
|
//
|
|
var leftToFetch = limit;
|
|
|
|
if (opts.style) {
|
|
params.style = opts.style;
|
|
}
|
|
|
|
if (opts.include_docs || opts.filter && typeof opts.filter === 'function') {
|
|
params.include_docs = true;
|
|
}
|
|
|
|
if (opts.attachments) {
|
|
params.attachments = true;
|
|
}
|
|
|
|
if (opts.continuous) {
|
|
params.feed = 'longpoll';
|
|
}
|
|
|
|
if (opts.conflicts) {
|
|
params.conflicts = true;
|
|
}
|
|
|
|
if (opts.descending) {
|
|
params.descending = true;
|
|
}
|
|
|
|
if ('heartbeat' in opts) {
|
|
// If the heartbeat value is false, it disables the default heartbeat
|
|
if (opts.heartbeat) {
|
|
params.heartbeat = opts.heartbeat;
|
|
}
|
|
} else {
|
|
// Default heartbeat to 10 seconds
|
|
params.heartbeat = 10000;
|
|
}
|
|
|
|
if (opts.filter && typeof opts.filter === 'string') {
|
|
params.filter = opts.filter;
|
|
if (opts.filter === '_view' &&
|
|
opts.view &&
|
|
typeof opts.view === 'string') {
|
|
params.view = opts.view;
|
|
}
|
|
}
|
|
|
|
// If opts.query_params exists, pass it through to the changes request.
|
|
// These parameters may be used by the filter on the source database.
|
|
if (opts.query_params && typeof opts.query_params === 'object') {
|
|
for (var param_name in opts.query_params) {
|
|
/* istanbul ignore else */
|
|
if (opts.query_params.hasOwnProperty(param_name)) {
|
|
params[param_name] = opts.query_params[param_name];
|
|
}
|
|
}
|
|
}
|
|
|
|
var method = 'GET';
|
|
var body;
|
|
|
|
if (opts.doc_ids) {
|
|
// set this automagically for the user; it's annoying that couchdb
|
|
// requires both a "filter" and a "doc_ids" param.
|
|
params.filter = '_doc_ids';
|
|
|
|
var docIdsJson = JSON.stringify(opts.doc_ids);
|
|
|
|
if (docIdsJson.length < MAX_URL_LENGTH) {
|
|
params.doc_ids = docIdsJson;
|
|
} else {
|
|
// anything greater than ~2000 is unsafe for gets, so
|
|
// use POST instead
|
|
method = 'POST';
|
|
body = {doc_ids: opts.doc_ids };
|
|
}
|
|
}
|
|
|
|
var xhr;
|
|
var lastFetchedSeq;
|
|
|
|
// Get all the changes starting wtih the one immediately after the
|
|
// sequence number given by since.
|
|
var fetch = function (since, callback) {
|
|
if (opts.aborted) {
|
|
return;
|
|
}
|
|
params.since = since;
|
|
// "since" can be any kind of json object in Coudant/CouchDB 2.x
|
|
/* istanbul ignore next */
|
|
if (typeof params.since === "object") {
|
|
params.since = JSON.stringify(params.since);
|
|
}
|
|
|
|
if (opts.descending) {
|
|
if (limit) {
|
|
params.limit = leftToFetch;
|
|
}
|
|
} else {
|
|
params.limit = (!limit || leftToFetch > batchSize) ?
|
|
batchSize : leftToFetch;
|
|
}
|
|
|
|
// Set the options for the ajax call
|
|
var xhrOpts = {
|
|
method: method,
|
|
url: genDBUrl(host, '_changes' + paramsToStr(params)),
|
|
timeout: opts.timeout,
|
|
body: body
|
|
};
|
|
lastFetchedSeq = since;
|
|
|
|
/* istanbul ignore if */
|
|
if (opts.aborted) {
|
|
return;
|
|
}
|
|
|
|
// Get the changes
|
|
setup().then(function () {
|
|
xhr = ajax(opts, xhrOpts, callback);
|
|
}).catch(callback);
|
|
};
|
|
|
|
// If opts.since exists, get all the changes from the sequence
|
|
// number given by opts.since. Otherwise, get all the changes
|
|
// from the sequence number 0.
|
|
var results = {results: []};
|
|
|
|
var fetched = function (err, res) {
|
|
if (opts.aborted) {
|
|
return;
|
|
}
|
|
var raw_results_length = 0;
|
|
// If the result of the ajax call (res) contains changes (res.results)
|
|
if (res && res.results) {
|
|
raw_results_length = res.results.length;
|
|
results.last_seq = res.last_seq;
|
|
// For each change
|
|
var req = {};
|
|
req.query = opts.query_params;
|
|
res.results = res.results.filter(function (c) {
|
|
leftToFetch--;
|
|
var ret = filterChange(opts)(c);
|
|
if (ret) {
|
|
if (opts.include_docs && opts.attachments && opts.binary) {
|
|
readAttachmentsAsBlobOrBuffer(c);
|
|
}
|
|
if (returnDocs) {
|
|
results.results.push(c);
|
|
}
|
|
opts.onChange(c);
|
|
}
|
|
return ret;
|
|
});
|
|
} else if (err) {
|
|
// In case of an error, stop listening for changes and call
|
|
// opts.complete
|
|
opts.aborted = true;
|
|
opts.complete(err);
|
|
return;
|
|
}
|
|
|
|
// The changes feed may have timed out with no results
|
|
// if so reuse last update sequence
|
|
if (res && res.last_seq) {
|
|
lastFetchedSeq = res.last_seq;
|
|
}
|
|
|
|
var finished = (limit && leftToFetch <= 0) ||
|
|
(res && raw_results_length < batchSize) ||
|
|
(opts.descending);
|
|
|
|
if ((opts.continuous && !(limit && leftToFetch <= 0)) || !finished) {
|
|
// Queue a call to fetch again with the newest sequence number
|
|
setTimeout(function () { fetch(lastFetchedSeq, fetched); }, 0);
|
|
} else {
|
|
// We're done, call the callback
|
|
opts.complete(null, results);
|
|
}
|
|
};
|
|
|
|
fetch(opts.since || 0, fetched);
|
|
|
|
// Return a method to cancel this method from processing any more
|
|
return {
|
|
cancel: function () {
|
|
opts.aborted = true;
|
|
if (xhr) {
|
|
xhr.abort();
|
|
}
|
|
}
|
|
};
|
|
};
|
|
|
|
// Given a set of document/revision IDs (given by req), tets the subset of
|
|
// those that do NOT correspond to revisions stored in the database.
|
|
// See http://wiki.apache.org/couchdb/HttpPostRevsDiff
|
|
api.revsDiff = adapterFun$$('revsDiff', function (req, opts, callback) {
|
|
// If no options were given, set the callback to be the second parameter
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
|
|
// Get the missing document/revision IDs
|
|
ajax(opts, {
|
|
method: 'POST',
|
|
url: genDBUrl(host, '_revs_diff'),
|
|
body: req
|
|
}, callback);
|
|
});
|
|
|
|
api._close = function (callback) {
|
|
callback();
|
|
};
|
|
|
|
api._destroy = function (options, callback) {
|
|
ajax(options, {
|
|
url: genDBUrl(host, ''),
|
|
method: 'DELETE'
|
|
}, function (err, resp) {
|
|
if (err && err.status && err.status !== 404) {
|
|
return callback(err);
|
|
}
|
|
api.emit('destroyed');
|
|
api.constructor.emit('destroyed', opts.name);
|
|
callback(null, resp);
|
|
});
|
|
};
|
|
}
|
|
|
|
// HttpPouch is a valid adapter.
|
|
HttpPouch.valid = function () {
|
|
return true;
|
|
};
|
|
|
|
function TaskQueue$1() {
|
|
this.promise = new PouchPromise(function (fulfill) {fulfill(); });
|
|
}
|
|
TaskQueue$1.prototype.add = function (promiseFactory) {
|
|
this.promise = this.promise.catch(function () {
|
|
// just recover
|
|
}).then(function () {
|
|
return promiseFactory();
|
|
});
|
|
return this.promise;
|
|
};
|
|
TaskQueue$1.prototype.finish = function () {
|
|
return this.promise;
|
|
};
|
|
|
|
function md5$1(string) {
|
|
return Md5.hash(string);
|
|
}
|
|
|
|
function createView(opts) {
|
|
var sourceDB = opts.db;
|
|
var viewName = opts.viewName;
|
|
var mapFun = opts.map;
|
|
var reduceFun = opts.reduce;
|
|
var temporary = opts.temporary;
|
|
|
|
// the "undefined" part is for backwards compatibility
|
|
var viewSignature = mapFun.toString() + (reduceFun && reduceFun.toString()) +
|
|
'undefined';
|
|
|
|
if (!temporary && sourceDB._cachedViews) {
|
|
var cachedView = sourceDB._cachedViews[viewSignature];
|
|
if (cachedView) {
|
|
return PouchPromise.resolve(cachedView);
|
|
}
|
|
}
|
|
|
|
return sourceDB.info().then(function (info) {
|
|
|
|
var depDbName = info.db_name + '-mrview-' +
|
|
(temporary ? 'temp' : md5$1(viewSignature));
|
|
|
|
// save the view name in the source db so it can be cleaned up if necessary
|
|
// (e.g. when the _design doc is deleted, remove all associated view data)
|
|
function diffFunction(doc) {
|
|
doc.views = doc.views || {};
|
|
var fullViewName = viewName;
|
|
if (fullViewName.indexOf('/') === -1) {
|
|
fullViewName = viewName + '/' + viewName;
|
|
}
|
|
var depDbs = doc.views[fullViewName] = doc.views[fullViewName] || {};
|
|
/* istanbul ignore if */
|
|
if (depDbs[depDbName]) {
|
|
return; // no update necessary
|
|
}
|
|
depDbs[depDbName] = true;
|
|
return doc;
|
|
}
|
|
return upsert(sourceDB, '_local/mrviews', diffFunction).then(function () {
|
|
return sourceDB.registerDependentDatabase(depDbName).then(function (res) {
|
|
var db = res.db;
|
|
db.auto_compaction = true;
|
|
var view = {
|
|
name: depDbName,
|
|
db: db,
|
|
sourceDB: sourceDB,
|
|
adapter: sourceDB.adapter,
|
|
mapFun: mapFun,
|
|
reduceFun: reduceFun
|
|
};
|
|
return view.db.get('_local/lastSeq').catch(function (err) {
|
|
/* istanbul ignore if */
|
|
if (err.status !== 404) {
|
|
throw err;
|
|
}
|
|
}).then(function (lastSeqDoc) {
|
|
view.seq = lastSeqDoc ? lastSeqDoc.seq : 0;
|
|
if (!temporary) {
|
|
sourceDB._cachedViews = sourceDB._cachedViews || {};
|
|
sourceDB._cachedViews[viewSignature] = view;
|
|
view.db.once('destroyed', function () {
|
|
delete sourceDB._cachedViews[viewSignature];
|
|
});
|
|
}
|
|
return view;
|
|
});
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
function evalfunc(func, emit, sum, log, isArray, toJSON) {
|
|
return scopedEval(
|
|
"return (" + func.replace(/;\s*$/, "") + ");",
|
|
{
|
|
emit: emit,
|
|
sum: sum,
|
|
log: log,
|
|
isArray: isArray,
|
|
toJSON: toJSON
|
|
}
|
|
);
|
|
}
|
|
|
|
var promisedCallback$1 = function (promise, callback) {
|
|
if (callback) {
|
|
promise.then(function (res) {
|
|
process.nextTick(function () {
|
|
callback(null, res);
|
|
});
|
|
}, function (reason) {
|
|
process.nextTick(function () {
|
|
callback(reason);
|
|
});
|
|
});
|
|
}
|
|
return promise;
|
|
};
|
|
|
|
var callbackify$1 = function (fun) {
|
|
return getArguments(function (args) {
|
|
var cb = args.pop();
|
|
var promise = fun.apply(this, args);
|
|
if (typeof cb === 'function') {
|
|
promisedCallback$1(promise, cb);
|
|
}
|
|
return promise;
|
|
});
|
|
};
|
|
|
|
// Promise finally util similar to Q.finally
|
|
var fin$1 = function (promise, finalPromiseFactory) {
|
|
return promise.then(function (res) {
|
|
return finalPromiseFactory().then(function () {
|
|
return res;
|
|
});
|
|
}, function (reason) {
|
|
return finalPromiseFactory().then(function () {
|
|
throw reason;
|
|
});
|
|
});
|
|
};
|
|
|
|
var sequentialize$1 = function (queue, promiseFactory) {
|
|
return function () {
|
|
var args = arguments;
|
|
var that = this;
|
|
return queue.add(function () {
|
|
return promiseFactory.apply(that, args);
|
|
});
|
|
};
|
|
};
|
|
|
|
// uniq an array of strings, order not guaranteed
|
|
// similar to underscore/lodash _.uniq
|
|
var uniq$1 = function (arr) {
|
|
var map = {};
|
|
|
|
for (var i = 0, len = arr.length; i < len; i++) {
|
|
map['$' + arr[i]] = true;
|
|
}
|
|
|
|
var keys = Object.keys(map);
|
|
var output = new Array(keys.length);
|
|
|
|
for (i = 0, len = keys.length; i < len; i++) {
|
|
output[i] = keys[i].substring(1);
|
|
}
|
|
return output;
|
|
};
|
|
|
|
var utils$1 = {
|
|
uniq: uniq$1,
|
|
sequentialize: sequentialize$1,
|
|
fin: fin$1,
|
|
callbackify: callbackify$1,
|
|
promisedCallback: promisedCallback$1
|
|
};
|
|
|
|
var collate$2 = pouchCollate__default.collate;
|
|
var toIndexableString = pouchCollate__default.toIndexableString;
|
|
var normalizeKey = pouchCollate__default.normalizeKey;
|
|
var parseIndexableString = pouchCollate__default.parseIndexableString;
|
|
var log$2;
|
|
/* istanbul ignore else */
|
|
if ((typeof console !== 'undefined') && (typeof console.log === 'function')) {
|
|
log$2 = Function.prototype.bind.call(console.log, console);
|
|
} else {
|
|
log$2 = function () {};
|
|
}
|
|
var callbackify = utils$1.callbackify;
|
|
var sequentialize = utils$1.sequentialize;
|
|
var uniq = utils$1.uniq;
|
|
var fin = utils$1.fin;
|
|
var promisedCallback = utils$1.promisedCallback;
|
|
var persistentQueues = {};
|
|
var tempViewQueue = new TaskQueue$1();
|
|
var CHANGES_BATCH_SIZE$1 = 50;
|
|
|
|
function parseViewName(name) {
|
|
// can be either 'ddocname/viewname' or just 'viewname'
|
|
// (where the ddoc name is the same)
|
|
return name.indexOf('/') === -1 ? [name, name] : name.split('/');
|
|
}
|
|
|
|
function isGenOne$1(changes) {
|
|
// only return true if the current change is 1-
|
|
// and there are no other leafs
|
|
return changes.length === 1 && /^1-/.test(changes[0].rev);
|
|
}
|
|
|
|
function emitError(db, e) {
|
|
try {
|
|
db.emit('error', e);
|
|
} catch (err) {
|
|
console.error(
|
|
'The user\'s map/reduce function threw an uncaught error.\n' +
|
|
'You can debug this error by doing:\n' +
|
|
'myDatabase.on(\'error\', function (err) { debugger; });\n' +
|
|
'Please double-check your map/reduce function.');
|
|
console.error(e);
|
|
}
|
|
}
|
|
|
|
function tryCode(db, fun, args) {
|
|
// emit an event if there was an error thrown by a map/reduce function.
|
|
// putting try/catches in a single function also avoids deoptimizations.
|
|
try {
|
|
return {
|
|
output : fun.apply(null, args)
|
|
};
|
|
} catch (e) {
|
|
emitError(db, e);
|
|
return {error: e};
|
|
}
|
|
}
|
|
|
|
function sortByKeyThenValue(x, y) {
|
|
var keyCompare = collate$2(x.key, y.key);
|
|
return keyCompare !== 0 ? keyCompare : collate$2(x.value, y.value);
|
|
}
|
|
|
|
function sliceResults(results, limit, skip) {
|
|
skip = skip || 0;
|
|
if (typeof limit === 'number') {
|
|
return results.slice(skip, limit + skip);
|
|
} else if (skip > 0) {
|
|
return results.slice(skip);
|
|
}
|
|
return results;
|
|
}
|
|
|
|
function rowToDocId(row) {
|
|
var val = row.value;
|
|
// Users can explicitly specify a joined doc _id, or it
|
|
// defaults to the doc _id that emitted the key/value.
|
|
var docId = (val && typeof val === 'object' && val._id) || row.id;
|
|
return docId;
|
|
}
|
|
|
|
function readAttachmentsAsBlobOrBuffer$1(res) {
|
|
res.rows.forEach(function (row) {
|
|
var atts = row.doc && row.doc._attachments;
|
|
if (!atts) {
|
|
return;
|
|
}
|
|
Object.keys(atts).forEach(function (filename) {
|
|
var att = atts[filename];
|
|
atts[filename].data = b64ToBluffer(att.data, att.content_type);
|
|
});
|
|
});
|
|
}
|
|
|
|
function postprocessAttachments(opts) {
|
|
return function (res) {
|
|
if (opts.include_docs && opts.attachments && opts.binary) {
|
|
readAttachmentsAsBlobOrBuffer$1(res);
|
|
}
|
|
return res;
|
|
};
|
|
}
|
|
|
|
function createBuiltInError(name) {
|
|
var message = 'builtin ' + name +
|
|
' function requires map values to be numbers' +
|
|
' or number arrays';
|
|
return new BuiltInError(message);
|
|
}
|
|
|
|
function sum(values) {
|
|
var result = 0;
|
|
for (var i = 0, len = values.length; i < len; i++) {
|
|
var num = values[i];
|
|
if (typeof num !== 'number') {
|
|
if (Array.isArray(num)) {
|
|
// lists of numbers are also allowed, sum them separately
|
|
result = typeof result === 'number' ? [result] : result;
|
|
for (var j = 0, jLen = num.length; j < jLen; j++) {
|
|
var jNum = num[j];
|
|
if (typeof jNum !== 'number') {
|
|
throw createBuiltInError('_sum');
|
|
} else if (typeof result[j] === 'undefined') {
|
|
result.push(jNum);
|
|
} else {
|
|
result[j] += jNum;
|
|
}
|
|
}
|
|
} else { // not array/number
|
|
throw createBuiltInError('_sum');
|
|
}
|
|
} else if (typeof result === 'number') {
|
|
result += num;
|
|
} else { // add number to array
|
|
result[0] += num;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
var builtInReduce = {
|
|
_sum: function (keys, values) {
|
|
return sum(values);
|
|
},
|
|
|
|
_count: function (keys, values) {
|
|
return values.length;
|
|
},
|
|
|
|
_stats: function (keys, values) {
|
|
// no need to implement rereduce=true, because Pouch
|
|
// will never call it
|
|
function sumsqr(values) {
|
|
var _sumsqr = 0;
|
|
for (var i = 0, len = values.length; i < len; i++) {
|
|
var num = values[i];
|
|
_sumsqr += (num * num);
|
|
}
|
|
return _sumsqr;
|
|
}
|
|
return {
|
|
sum : sum(values),
|
|
min : Math.min.apply(null, values),
|
|
max : Math.max.apply(null, values),
|
|
count : values.length,
|
|
sumsqr : sumsqr(values)
|
|
};
|
|
}
|
|
};
|
|
|
|
function addHttpParam(paramName, opts, params, asJson) {
|
|
// add an http param from opts to params, optionally json-encoded
|
|
var val = opts[paramName];
|
|
if (typeof val !== 'undefined') {
|
|
if (asJson) {
|
|
val = encodeURIComponent(JSON.stringify(val));
|
|
}
|
|
params.push(paramName + '=' + val);
|
|
}
|
|
}
|
|
|
|
function coerceInteger(integerCandidate) {
|
|
if (typeof integerCandidate !== 'undefined') {
|
|
var asNumber = Number(integerCandidate);
|
|
// prevents e.g. '1foo' or '1.1' being coerced to 1
|
|
if (!isNaN(asNumber) && asNumber === parseInt(integerCandidate, 10)) {
|
|
return asNumber;
|
|
} else {
|
|
return integerCandidate;
|
|
}
|
|
}
|
|
}
|
|
|
|
function coerceOptions(opts) {
|
|
opts.group_level = coerceInteger(opts.group_level);
|
|
opts.limit = coerceInteger(opts.limit);
|
|
opts.skip = coerceInteger(opts.skip);
|
|
return opts;
|
|
}
|
|
|
|
function checkPositiveInteger(number) {
|
|
if (number) {
|
|
if (typeof number !== 'number') {
|
|
return new QueryParseError('Invalid value for integer: "' +
|
|
number + '"');
|
|
}
|
|
if (number < 0) {
|
|
return new QueryParseError('Invalid value for positive integer: ' +
|
|
'"' + number + '"');
|
|
}
|
|
}
|
|
}
|
|
|
|
function checkQueryParseError(options, fun) {
|
|
var startkeyName = options.descending ? 'endkey' : 'startkey';
|
|
var endkeyName = options.descending ? 'startkey' : 'endkey';
|
|
|
|
if (typeof options[startkeyName] !== 'undefined' &&
|
|
typeof options[endkeyName] !== 'undefined' &&
|
|
collate$2(options[startkeyName], options[endkeyName]) > 0) {
|
|
throw new QueryParseError('No rows can match your key range, ' +
|
|
'reverse your start_key and end_key or set {descending : true}');
|
|
} else if (fun.reduce && options.reduce !== false) {
|
|
if (options.include_docs) {
|
|
throw new QueryParseError('{include_docs:true} is invalid for reduce');
|
|
} else if (options.keys && options.keys.length > 1 &&
|
|
!options.group && !options.group_level) {
|
|
throw new QueryParseError('Multi-key fetches for reduce views must use ' +
|
|
'{group: true}');
|
|
}
|
|
}
|
|
['group_level', 'limit', 'skip'].forEach(function (optionName) {
|
|
var error = checkPositiveInteger(options[optionName]);
|
|
if (error) {
|
|
throw error;
|
|
}
|
|
});
|
|
}
|
|
|
|
function httpQuery(db, fun, opts) {
|
|
// List of parameters to add to the PUT request
|
|
var params = [];
|
|
var body;
|
|
var method = 'GET';
|
|
|
|
// If opts.reduce exists and is defined, then add it to the list
|
|
// of parameters.
|
|
// If reduce=false then the results are that of only the map function
|
|
// not the final result of map and reduce.
|
|
addHttpParam('reduce', opts, params);
|
|
addHttpParam('include_docs', opts, params);
|
|
addHttpParam('attachments', opts, params);
|
|
addHttpParam('limit', opts, params);
|
|
addHttpParam('descending', opts, params);
|
|
addHttpParam('group', opts, params);
|
|
addHttpParam('group_level', opts, params);
|
|
addHttpParam('skip', opts, params);
|
|
addHttpParam('stale', opts, params);
|
|
addHttpParam('conflicts', opts, params);
|
|
addHttpParam('startkey', opts, params, true);
|
|
addHttpParam('start_key', opts, params, true);
|
|
addHttpParam('endkey', opts, params, true);
|
|
addHttpParam('end_key', opts, params, true);
|
|
addHttpParam('inclusive_end', opts, params);
|
|
addHttpParam('key', opts, params, true);
|
|
|
|
// Format the list of parameters into a valid URI query string
|
|
params = params.join('&');
|
|
params = params === '' ? '' : '?' + params;
|
|
|
|
// If keys are supplied, issue a POST to circumvent GET query string limits
|
|
// see http://wiki.apache.org/couchdb/HTTP_view_API#Querying_Options
|
|
if (typeof opts.keys !== 'undefined') {
|
|
var MAX_URL_LENGTH = 2000;
|
|
// according to http://stackoverflow.com/a/417184/680742,
|
|
// the de facto URL length limit is 2000 characters
|
|
|
|
var keysAsString =
|
|
'keys=' + encodeURIComponent(JSON.stringify(opts.keys));
|
|
if (keysAsString.length + params.length + 1 <= MAX_URL_LENGTH) {
|
|
// If the keys are short enough, do a GET. we do this to work around
|
|
// Safari not understanding 304s on POSTs (see pouchdb/pouchdb#1239)
|
|
params += (params[0] === '?' ? '&' : '?') + keysAsString;
|
|
} else {
|
|
method = 'POST';
|
|
if (typeof fun === 'string') {
|
|
body = {keys: opts.keys};
|
|
} else { // fun is {map : mapfun}, so append to this
|
|
fun.keys = opts.keys;
|
|
}
|
|
}
|
|
}
|
|
|
|
// We are referencing a query defined in the design doc
|
|
if (typeof fun === 'string') {
|
|
var parts = parseViewName(fun);
|
|
return db.request({
|
|
method: method,
|
|
url: '_design/' + parts[0] + '/_view/' + parts[1] + params,
|
|
body: body
|
|
}).then(postprocessAttachments(opts));
|
|
}
|
|
|
|
// We are using a temporary view, terrible for performance, good for testing
|
|
body = body || {};
|
|
Object.keys(fun).forEach(function (key) {
|
|
if (Array.isArray(fun[key])) {
|
|
body[key] = fun[key];
|
|
} else {
|
|
body[key] = fun[key].toString();
|
|
}
|
|
});
|
|
return db.request({
|
|
method: 'POST',
|
|
url: '_temp_view' + params,
|
|
body: body
|
|
}).then(postprocessAttachments(opts));
|
|
}
|
|
|
|
// custom adapters can define their own api._query
|
|
// and override the default behavior
|
|
/* istanbul ignore next */
|
|
function customQuery(db, fun, opts) {
|
|
return new PouchPromise(function (resolve, reject) {
|
|
db._query(fun, opts, function (err, res) {
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
resolve(res);
|
|
});
|
|
});
|
|
}
|
|
|
|
// custom adapters can define their own api._viewCleanup
|
|
// and override the default behavior
|
|
/* istanbul ignore next */
|
|
function customViewCleanup(db) {
|
|
return new PouchPromise(function (resolve, reject) {
|
|
db._viewCleanup(function (err, res) {
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
resolve(res);
|
|
});
|
|
});
|
|
}
|
|
|
|
function defaultsTo(value) {
|
|
return function (reason) {
|
|
/* istanbul ignore else */
|
|
if (reason.status === 404) {
|
|
return value;
|
|
} else {
|
|
throw reason;
|
|
}
|
|
};
|
|
}
|
|
|
|
// returns a promise for a list of docs to update, based on the input docId.
|
|
// the order doesn't matter, because post-3.2.0, bulkDocs
|
|
// is an atomic operation in all three adapters.
|
|
function getDocsToPersist(docId, view, docIdsToChangesAndEmits) {
|
|
var metaDocId = '_local/doc_' + docId;
|
|
var defaultMetaDoc = {_id: metaDocId, keys: []};
|
|
var docData = docIdsToChangesAndEmits[docId];
|
|
var indexableKeysToKeyValues = docData.indexableKeysToKeyValues;
|
|
var changes = docData.changes;
|
|
|
|
function getMetaDoc() {
|
|
if (isGenOne$1(changes)) {
|
|
// generation 1, so we can safely assume initial state
|
|
// for performance reasons (avoids unnecessary GETs)
|
|
return PouchPromise.resolve(defaultMetaDoc);
|
|
}
|
|
return view.db.get(metaDocId).catch(defaultsTo(defaultMetaDoc));
|
|
}
|
|
|
|
function getKeyValueDocs(metaDoc) {
|
|
if (!metaDoc.keys.length) {
|
|
// no keys, no need for a lookup
|
|
return PouchPromise.resolve({rows: []});
|
|
}
|
|
return view.db.allDocs({
|
|
keys: metaDoc.keys,
|
|
include_docs: true
|
|
});
|
|
}
|
|
|
|
function processKvDocs(metaDoc, kvDocsRes) {
|
|
var kvDocs = [];
|
|
var oldKeysMap = {};
|
|
|
|
for (var i = 0, len = kvDocsRes.rows.length; i < len; i++) {
|
|
var row = kvDocsRes.rows[i];
|
|
var doc = row.doc;
|
|
if (!doc) { // deleted
|
|
continue;
|
|
}
|
|
kvDocs.push(doc);
|
|
oldKeysMap[doc._id] = true;
|
|
doc._deleted = !indexableKeysToKeyValues[doc._id];
|
|
if (!doc._deleted) {
|
|
var keyValue = indexableKeysToKeyValues[doc._id];
|
|
if ('value' in keyValue) {
|
|
doc.value = keyValue.value;
|
|
}
|
|
}
|
|
}
|
|
|
|
var newKeys = Object.keys(indexableKeysToKeyValues);
|
|
newKeys.forEach(function (key) {
|
|
if (!oldKeysMap[key]) {
|
|
// new doc
|
|
var kvDoc = {
|
|
_id: key
|
|
};
|
|
var keyValue = indexableKeysToKeyValues[key];
|
|
if ('value' in keyValue) {
|
|
kvDoc.value = keyValue.value;
|
|
}
|
|
kvDocs.push(kvDoc);
|
|
}
|
|
});
|
|
metaDoc.keys = uniq(newKeys.concat(metaDoc.keys));
|
|
kvDocs.push(metaDoc);
|
|
|
|
return kvDocs;
|
|
}
|
|
|
|
return getMetaDoc().then(function (metaDoc) {
|
|
return getKeyValueDocs(metaDoc).then(function (kvDocsRes) {
|
|
return processKvDocs(metaDoc, kvDocsRes);
|
|
});
|
|
});
|
|
}
|
|
|
|
// updates all emitted key/value docs and metaDocs in the mrview database
|
|
// for the given batch of documents from the source database
|
|
function saveKeyValues(view, docIdsToChangesAndEmits, seq) {
|
|
var seqDocId = '_local/lastSeq';
|
|
return view.db.get(seqDocId)
|
|
.catch(defaultsTo({_id: seqDocId, seq: 0}))
|
|
.then(function (lastSeqDoc) {
|
|
var docIds = Object.keys(docIdsToChangesAndEmits);
|
|
return PouchPromise.all(docIds.map(function (docId) {
|
|
return getDocsToPersist(docId, view, docIdsToChangesAndEmits);
|
|
})).then(function (listOfDocsToPersist) {
|
|
var docsToPersist = flatten(listOfDocsToPersist);
|
|
lastSeqDoc.seq = seq;
|
|
docsToPersist.push(lastSeqDoc);
|
|
// write all docs in a single operation, update the seq once
|
|
return view.db.bulkDocs({docs : docsToPersist});
|
|
});
|
|
});
|
|
}
|
|
|
|
function getQueue(view) {
|
|
var viewName = typeof view === 'string' ? view : view.name;
|
|
var queue = persistentQueues[viewName];
|
|
if (!queue) {
|
|
queue = persistentQueues[viewName] = new TaskQueue$1();
|
|
}
|
|
return queue;
|
|
}
|
|
|
|
function updateView(view) {
|
|
return sequentialize(getQueue(view), function () {
|
|
return updateViewInQueue(view);
|
|
})();
|
|
}
|
|
|
|
function updateViewInQueue(view) {
|
|
// bind the emit function once
|
|
var mapResults;
|
|
var doc;
|
|
|
|
function emit(key, value) {
|
|
var output = {id: doc._id, key: normalizeKey(key)};
|
|
// Don't explicitly store the value unless it's defined and non-null.
|
|
// This saves on storage space, because often people don't use it.
|
|
if (typeof value !== 'undefined' && value !== null) {
|
|
output.value = normalizeKey(value);
|
|
}
|
|
mapResults.push(output);
|
|
}
|
|
|
|
var mapFun;
|
|
// for temp_views one can use emit(doc, emit), see #38
|
|
if (typeof view.mapFun === "function" && view.mapFun.length === 2) {
|
|
var origMap = view.mapFun;
|
|
mapFun = function (doc) {
|
|
return origMap(doc, emit);
|
|
};
|
|
} else {
|
|
mapFun = evalfunc(view.mapFun.toString(), emit, sum, log$2, Array.isArray,
|
|
JSON.parse);
|
|
}
|
|
|
|
var currentSeq = view.seq || 0;
|
|
|
|
function processChange(docIdsToChangesAndEmits, seq) {
|
|
return function () {
|
|
return saveKeyValues(view, docIdsToChangesAndEmits, seq);
|
|
};
|
|
}
|
|
|
|
var queue = new TaskQueue$1();
|
|
// TODO(neojski): https://github.com/daleharvey/pouchdb/issues/1521
|
|
|
|
return new PouchPromise(function (resolve, reject) {
|
|
|
|
function complete() {
|
|
queue.finish().then(function () {
|
|
view.seq = currentSeq;
|
|
resolve();
|
|
});
|
|
}
|
|
|
|
function processNextBatch() {
|
|
view.sourceDB.changes({
|
|
conflicts: true,
|
|
include_docs: true,
|
|
style: 'all_docs',
|
|
since: currentSeq,
|
|
limit: CHANGES_BATCH_SIZE$1
|
|
}).on('complete', function (response) {
|
|
var results = response.results;
|
|
if (!results.length) {
|
|
return complete();
|
|
}
|
|
var docIdsToChangesAndEmits = {};
|
|
for (var i = 0, l = results.length; i < l; i++) {
|
|
var change = results[i];
|
|
if (change.doc._id[0] !== '_') {
|
|
mapResults = [];
|
|
doc = change.doc;
|
|
|
|
if (!doc._deleted) {
|
|
tryCode(view.sourceDB, mapFun, [doc]);
|
|
}
|
|
mapResults.sort(sortByKeyThenValue);
|
|
|
|
var indexableKeysToKeyValues = {};
|
|
var lastKey;
|
|
for (var j = 0, jl = mapResults.length; j < jl; j++) {
|
|
var obj = mapResults[j];
|
|
var complexKey = [obj.key, obj.id];
|
|
if (collate$2(obj.key, lastKey) === 0) {
|
|
complexKey.push(j); // dup key+id, so make it unique
|
|
}
|
|
var indexableKey = toIndexableString(complexKey);
|
|
indexableKeysToKeyValues[indexableKey] = obj;
|
|
lastKey = obj.key;
|
|
}
|
|
docIdsToChangesAndEmits[change.doc._id] = {
|
|
indexableKeysToKeyValues: indexableKeysToKeyValues,
|
|
changes: change.changes
|
|
};
|
|
}
|
|
currentSeq = change.seq;
|
|
}
|
|
queue.add(processChange(docIdsToChangesAndEmits, currentSeq));
|
|
if (results.length < CHANGES_BATCH_SIZE$1) {
|
|
return complete();
|
|
}
|
|
return processNextBatch();
|
|
}).on('error', onError);
|
|
/* istanbul ignore next */
|
|
function onError(err) {
|
|
reject(err);
|
|
}
|
|
}
|
|
|
|
processNextBatch();
|
|
});
|
|
}
|
|
|
|
function reduceView(view, results, options) {
|
|
if (options.group_level === 0) {
|
|
delete options.group_level;
|
|
}
|
|
|
|
var shouldGroup = options.group || options.group_level;
|
|
|
|
var reduceFun;
|
|
if (builtInReduce[view.reduceFun]) {
|
|
reduceFun = builtInReduce[view.reduceFun];
|
|
} else {
|
|
reduceFun = evalfunc(
|
|
view.reduceFun.toString(), null, sum, log$2, Array.isArray, JSON.parse);
|
|
}
|
|
|
|
var groups = [];
|
|
var lvl = isNaN(options.group_level) ? Number.POSITIVE_INFINITY :
|
|
options.group_level;
|
|
results.forEach(function (e) {
|
|
var last = groups[groups.length - 1];
|
|
var groupKey = shouldGroup ? e.key : null;
|
|
|
|
// only set group_level for array keys
|
|
if (shouldGroup && Array.isArray(groupKey)) {
|
|
groupKey = groupKey.slice(0, lvl);
|
|
}
|
|
|
|
if (last && collate$2(last.groupKey, groupKey) === 0) {
|
|
last.keys.push([e.key, e.id]);
|
|
last.values.push(e.value);
|
|
return;
|
|
}
|
|
groups.push({
|
|
keys: [[e.key, e.id]],
|
|
values: [e.value],
|
|
groupKey: groupKey
|
|
});
|
|
});
|
|
results = [];
|
|
for (var i = 0, len = groups.length; i < len; i++) {
|
|
var e = groups[i];
|
|
var reduceTry = tryCode(view.sourceDB, reduceFun,
|
|
[e.keys, e.values, false]);
|
|
if (reduceTry.error && reduceTry.error instanceof BuiltInError) {
|
|
// CouchDB returns an error if a built-in errors out
|
|
throw reduceTry.error;
|
|
}
|
|
results.push({
|
|
// CouchDB just sets the value to null if a non-built-in errors out
|
|
value: reduceTry.error ? null : reduceTry.output,
|
|
key: e.groupKey
|
|
});
|
|
}
|
|
// no total_rows/offset when reducing
|
|
return {rows: sliceResults(results, options.limit, options.skip)};
|
|
}
|
|
|
|
function queryView(view, opts) {
|
|
return sequentialize(getQueue(view), function () {
|
|
return queryViewInQueue(view, opts);
|
|
})();
|
|
}
|
|
|
|
function queryViewInQueue(view, opts) {
|
|
var totalRows;
|
|
var shouldReduce = view.reduceFun && opts.reduce !== false;
|
|
var skip = opts.skip || 0;
|
|
if (typeof opts.keys !== 'undefined' && !opts.keys.length) {
|
|
// equivalent query
|
|
opts.limit = 0;
|
|
delete opts.keys;
|
|
}
|
|
|
|
function fetchFromView(viewOpts) {
|
|
viewOpts.include_docs = true;
|
|
return view.db.allDocs(viewOpts).then(function (res) {
|
|
totalRows = res.total_rows;
|
|
return res.rows.map(function (result) {
|
|
|
|
// implicit migration - in older versions of PouchDB,
|
|
// we explicitly stored the doc as {id: ..., key: ..., value: ...}
|
|
// this is tested in a migration test
|
|
/* istanbul ignore next */
|
|
if ('value' in result.doc && typeof result.doc.value === 'object' &&
|
|
result.doc.value !== null) {
|
|
var keys = Object.keys(result.doc.value).sort();
|
|
// this detection method is not perfect, but it's unlikely the user
|
|
// emitted a value which was an object with these 3 exact keys
|
|
var expectedKeys = ['id', 'key', 'value'];
|
|
if (!(keys < expectedKeys || keys > expectedKeys)) {
|
|
return result.doc.value;
|
|
}
|
|
}
|
|
|
|
var parsedKeyAndDocId = parseIndexableString(result.doc._id);
|
|
return {
|
|
key: parsedKeyAndDocId[0],
|
|
id: parsedKeyAndDocId[1],
|
|
value: ('value' in result.doc ? result.doc.value : null)
|
|
};
|
|
});
|
|
});
|
|
}
|
|
|
|
function onMapResultsReady(rows) {
|
|
var finalResults;
|
|
if (shouldReduce) {
|
|
finalResults = reduceView(view, rows, opts);
|
|
} else {
|
|
finalResults = {
|
|
total_rows: totalRows,
|
|
offset: skip,
|
|
rows: rows
|
|
};
|
|
}
|
|
if (opts.include_docs) {
|
|
var docIds = uniq(rows.map(rowToDocId));
|
|
|
|
return view.sourceDB.allDocs({
|
|
keys: docIds,
|
|
include_docs: true,
|
|
conflicts: opts.conflicts,
|
|
attachments: opts.attachments,
|
|
binary: opts.binary
|
|
}).then(function (allDocsRes) {
|
|
var docIdsToDocs = {};
|
|
allDocsRes.rows.forEach(function (row) {
|
|
if (row.doc) {
|
|
docIdsToDocs['$' + row.id] = row.doc;
|
|
}
|
|
});
|
|
rows.forEach(function (row) {
|
|
var docId = rowToDocId(row);
|
|
var doc = docIdsToDocs['$' + docId];
|
|
if (doc) {
|
|
row.doc = doc;
|
|
}
|
|
});
|
|
return finalResults;
|
|
});
|
|
} else {
|
|
return finalResults;
|
|
}
|
|
}
|
|
|
|
if (typeof opts.keys !== 'undefined') {
|
|
var keys = opts.keys;
|
|
var fetchPromises = keys.map(function (key) {
|
|
var viewOpts = {
|
|
startkey : toIndexableString([key]),
|
|
endkey : toIndexableString([key, {}])
|
|
};
|
|
return fetchFromView(viewOpts);
|
|
});
|
|
return PouchPromise.all(fetchPromises).then(flatten).then(onMapResultsReady);
|
|
} else { // normal query, no 'keys'
|
|
var viewOpts = {
|
|
descending : opts.descending
|
|
};
|
|
if (opts.start_key) {
|
|
opts.startkey = opts.start_key;
|
|
}
|
|
if (opts.end_key) {
|
|
opts.endkey = opts.end_key;
|
|
}
|
|
if (typeof opts.startkey !== 'undefined') {
|
|
viewOpts.startkey = opts.descending ?
|
|
toIndexableString([opts.startkey, {}]) :
|
|
toIndexableString([opts.startkey]);
|
|
}
|
|
if (typeof opts.endkey !== 'undefined') {
|
|
var inclusiveEnd = opts.inclusive_end !== false;
|
|
if (opts.descending) {
|
|
inclusiveEnd = !inclusiveEnd;
|
|
}
|
|
|
|
viewOpts.endkey = toIndexableString(
|
|
inclusiveEnd ? [opts.endkey, {}] : [opts.endkey]);
|
|
}
|
|
if (typeof opts.key !== 'undefined') {
|
|
var keyStart = toIndexableString([opts.key]);
|
|
var keyEnd = toIndexableString([opts.key, {}]);
|
|
if (viewOpts.descending) {
|
|
viewOpts.endkey = keyStart;
|
|
viewOpts.startkey = keyEnd;
|
|
} else {
|
|
viewOpts.startkey = keyStart;
|
|
viewOpts.endkey = keyEnd;
|
|
}
|
|
}
|
|
if (!shouldReduce) {
|
|
if (typeof opts.limit === 'number') {
|
|
viewOpts.limit = opts.limit;
|
|
}
|
|
viewOpts.skip = skip;
|
|
}
|
|
return fetchFromView(viewOpts).then(onMapResultsReady);
|
|
}
|
|
}
|
|
|
|
function httpViewCleanup(db) {
|
|
return db.request({
|
|
method: 'POST',
|
|
url: '_view_cleanup'
|
|
});
|
|
}
|
|
|
|
function localViewCleanup(db) {
|
|
return db.get('_local/mrviews').then(function (metaDoc) {
|
|
var docsToViews = {};
|
|
Object.keys(metaDoc.views).forEach(function (fullViewName) {
|
|
var parts = parseViewName(fullViewName);
|
|
var designDocName = '_design/' + parts[0];
|
|
var viewName = parts[1];
|
|
docsToViews[designDocName] = docsToViews[designDocName] || {};
|
|
docsToViews[designDocName][viewName] = true;
|
|
});
|
|
var opts = {
|
|
keys : Object.keys(docsToViews),
|
|
include_docs : true
|
|
};
|
|
return db.allDocs(opts).then(function (res) {
|
|
var viewsToStatus = {};
|
|
res.rows.forEach(function (row) {
|
|
var ddocName = row.key.substring(8);
|
|
Object.keys(docsToViews[row.key]).forEach(function (viewName) {
|
|
var fullViewName = ddocName + '/' + viewName;
|
|
/* istanbul ignore if */
|
|
if (!metaDoc.views[fullViewName]) {
|
|
// new format, without slashes, to support PouchDB 2.2.0
|
|
// migration test in pouchdb's browser.migration.js verifies this
|
|
fullViewName = viewName;
|
|
}
|
|
var viewDBNames = Object.keys(metaDoc.views[fullViewName]);
|
|
// design doc deleted, or view function nonexistent
|
|
var statusIsGood = row.doc && row.doc.views &&
|
|
row.doc.views[viewName];
|
|
viewDBNames.forEach(function (viewDBName) {
|
|
viewsToStatus[viewDBName] =
|
|
viewsToStatus[viewDBName] || statusIsGood;
|
|
});
|
|
});
|
|
});
|
|
var dbsToDelete = Object.keys(viewsToStatus).filter(
|
|
function (viewDBName) { return !viewsToStatus[viewDBName]; });
|
|
var destroyPromises = dbsToDelete.map(function (viewDBName) {
|
|
return sequentialize(getQueue(viewDBName), function () {
|
|
return new db.constructor(viewDBName, db.__opts).destroy();
|
|
})();
|
|
});
|
|
return PouchPromise.all(destroyPromises).then(function () {
|
|
return {ok: true};
|
|
});
|
|
});
|
|
}, defaultsTo({ok: true}));
|
|
}
|
|
|
|
var viewCleanup = callbackify(function () {
|
|
var db = this;
|
|
if (db._ddocCache) {
|
|
delete db._ddocCache;
|
|
}
|
|
if (db.type() === 'http') {
|
|
return httpViewCleanup(db);
|
|
}
|
|
/* istanbul ignore next */
|
|
if (typeof db._viewCleanup === 'function') {
|
|
return customViewCleanup(db);
|
|
}
|
|
return localViewCleanup(db);
|
|
});
|
|
|
|
function queryPromised(db, fun, opts) {
|
|
if (db.type() === 'http') {
|
|
return httpQuery(db, fun, opts);
|
|
}
|
|
|
|
/* istanbul ignore next */
|
|
if (typeof db._query === 'function') {
|
|
return customQuery(db, fun, opts);
|
|
}
|
|
|
|
if (typeof fun !== 'string') {
|
|
// temp_view
|
|
checkQueryParseError(opts, fun);
|
|
|
|
var createViewOpts = {
|
|
db : db,
|
|
viewName : 'temp_view/temp_view',
|
|
map : fun.map,
|
|
reduce : fun.reduce,
|
|
temporary : true
|
|
};
|
|
tempViewQueue.add(function () {
|
|
return createView(createViewOpts).then(function (view) {
|
|
function cleanup() {
|
|
return view.db.destroy();
|
|
}
|
|
return fin(updateView(view).then(function () {
|
|
return queryView(view, opts);
|
|
}), cleanup);
|
|
});
|
|
});
|
|
return tempViewQueue.finish();
|
|
} else {
|
|
// persistent view
|
|
var fullViewName = fun;
|
|
var parts = parseViewName(fullViewName);
|
|
var designDocName = parts[0];
|
|
var viewName = parts[1];
|
|
return db.getView(designDocName, viewName).then(function (fun) {
|
|
checkQueryParseError(opts, fun);
|
|
|
|
var createViewOpts = {
|
|
db : db,
|
|
viewName : fullViewName,
|
|
map : fun.map,
|
|
reduce : fun.reduce
|
|
};
|
|
return createView(createViewOpts).then(function (view) {
|
|
if (opts.stale === 'ok' || opts.stale === 'update_after') {
|
|
if (opts.stale === 'update_after') {
|
|
process.nextTick(function () {
|
|
updateView(view);
|
|
});
|
|
}
|
|
return queryView(view, opts);
|
|
} else { // stale not ok
|
|
return updateView(view).then(function () {
|
|
return queryView(view, opts);
|
|
});
|
|
}
|
|
});
|
|
});
|
|
}
|
|
}
|
|
|
|
var query = function (fun, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
opts = opts ? coerceOptions(opts) : {};
|
|
|
|
if (typeof fun === 'function') {
|
|
fun = {map : fun};
|
|
}
|
|
|
|
var db = this;
|
|
var promise = PouchPromise.resolve().then(function () {
|
|
return queryPromised(db, fun, opts);
|
|
});
|
|
promisedCallback(promise, callback);
|
|
return promise;
|
|
};
|
|
|
|
function QueryParseError(message) {
|
|
this.status = 400;
|
|
this.name = 'query_parse_error';
|
|
this.message = message;
|
|
this.error = true;
|
|
try {
|
|
Error.captureStackTrace(this, QueryParseError);
|
|
} catch (e) {}
|
|
}
|
|
|
|
inherits(QueryParseError, Error);
|
|
|
|
function BuiltInError(message) {
|
|
this.status = 500;
|
|
this.name = 'invalid_value';
|
|
this.message = message;
|
|
this.error = true;
|
|
try {
|
|
Error.captureStackTrace(this, BuiltInError);
|
|
} catch (e) {}
|
|
}
|
|
|
|
inherits(BuiltInError, Error);
|
|
|
|
var mapreduce = {
|
|
query: query,
|
|
viewCleanup: viewCleanup
|
|
};
|
|
|
|
function arrayBufferToBase64(buffer) {
|
|
return btoa$1(arrayBufferToBinaryString(buffer));
|
|
}
|
|
|
|
function preprocessAttachments$1(docInfos, blobType, callback) {
|
|
|
|
if (!docInfos.length) {
|
|
return callback();
|
|
}
|
|
|
|
var docv = 0;
|
|
|
|
function parseBase64(data) {
|
|
try {
|
|
return atob$1(data);
|
|
} catch (e) {
|
|
var err = createError(BAD_ARG,
|
|
'Attachment is not a valid base64 string');
|
|
return {error: err};
|
|
}
|
|
}
|
|
|
|
function preprocessAttachment(att, callback) {
|
|
if (att.stub) {
|
|
return callback();
|
|
}
|
|
if (typeof att.data === 'string') {
|
|
// input is assumed to be a base64 string
|
|
|
|
var asBinary = parseBase64(att.data);
|
|
if (asBinary.error) {
|
|
return callback(asBinary.error);
|
|
}
|
|
|
|
att.length = asBinary.length;
|
|
if (blobType === 'blob') {
|
|
att.data = binStringToBluffer(asBinary, att.content_type);
|
|
} else if (blobType === 'base64') {
|
|
att.data = btoa$1(asBinary);
|
|
} else { // binary
|
|
att.data = asBinary;
|
|
}
|
|
md5(asBinary).then(function (result) {
|
|
att.digest = 'md5-' + result;
|
|
callback();
|
|
});
|
|
} else { // input is a blob
|
|
readAsArrayBuffer(att.data, function (buff) {
|
|
if (blobType === 'binary') {
|
|
att.data = arrayBufferToBinaryString(buff);
|
|
} else if (blobType === 'base64') {
|
|
att.data = arrayBufferToBase64(buff);
|
|
}
|
|
md5(buff).then(function (result) {
|
|
att.digest = 'md5-' + result;
|
|
att.length = buff.byteLength;
|
|
callback();
|
|
});
|
|
});
|
|
}
|
|
}
|
|
|
|
var overallErr;
|
|
|
|
docInfos.forEach(function (docInfo) {
|
|
var attachments = docInfo.data && docInfo.data._attachments ?
|
|
Object.keys(docInfo.data._attachments) : [];
|
|
var recv = 0;
|
|
|
|
if (!attachments.length) {
|
|
return done();
|
|
}
|
|
|
|
function processedAttachment(err) {
|
|
overallErr = err;
|
|
recv++;
|
|
if (recv === attachments.length) {
|
|
done();
|
|
}
|
|
}
|
|
|
|
for (var key in docInfo.data._attachments) {
|
|
if (docInfo.data._attachments.hasOwnProperty(key)) {
|
|
preprocessAttachment(docInfo.data._attachments[key],
|
|
processedAttachment);
|
|
}
|
|
}
|
|
});
|
|
|
|
function done() {
|
|
docv++;
|
|
if (docInfos.length === docv) {
|
|
if (overallErr) {
|
|
callback(overallErr);
|
|
} else {
|
|
callback();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function sortByPos$1(a, b) {
|
|
return a.pos - b.pos;
|
|
}
|
|
|
|
// classic binary search
|
|
function binarySearch(arr, item, comparator) {
|
|
var low = 0;
|
|
var high = arr.length;
|
|
var mid;
|
|
while (low < high) {
|
|
mid = (low + high) >>> 1;
|
|
if (comparator(arr[mid], item) < 0) {
|
|
low = mid + 1;
|
|
} else {
|
|
high = mid;
|
|
}
|
|
}
|
|
return low;
|
|
}
|
|
|
|
// assuming the arr is sorted, insert the item in the proper place
|
|
function insertSorted(arr, item, comparator) {
|
|
var idx = binarySearch(arr, item, comparator);
|
|
arr.splice(idx, 0, item);
|
|
}
|
|
|
|
// Turn a path as a flat array into a tree with a single branch.
|
|
// If any should be stemmed from the beginning of the array, that's passed
|
|
// in as the second argument
|
|
function pathToTree(path, numStemmed) {
|
|
var root;
|
|
var leaf;
|
|
for (var i = numStemmed, len = path.length; i < len; i++) {
|
|
var node = path[i];
|
|
var currentLeaf = [node.id, node.opts, []];
|
|
if (leaf) {
|
|
leaf[2].push(currentLeaf);
|
|
leaf = currentLeaf;
|
|
} else {
|
|
root = leaf = currentLeaf;
|
|
}
|
|
}
|
|
return root;
|
|
}
|
|
|
|
// compare the IDs of two trees
|
|
function compareTree(a, b) {
|
|
return a[0] < b[0] ? -1 : 1;
|
|
}
|
|
|
|
// Merge two trees together
|
|
// The roots of tree1 and tree2 must be the same revision
|
|
function mergeTree(in_tree1, in_tree2) {
|
|
var queue = [{tree1: in_tree1, tree2: in_tree2}];
|
|
var conflicts = false;
|
|
while (queue.length > 0) {
|
|
var item = queue.pop();
|
|
var tree1 = item.tree1;
|
|
var tree2 = item.tree2;
|
|
|
|
if (tree1[1].status || tree2[1].status) {
|
|
tree1[1].status =
|
|
(tree1[1].status === 'available' ||
|
|
tree2[1].status === 'available') ? 'available' : 'missing';
|
|
}
|
|
|
|
for (var i = 0; i < tree2[2].length; i++) {
|
|
if (!tree1[2][0]) {
|
|
conflicts = 'new_leaf';
|
|
tree1[2][0] = tree2[2][i];
|
|
continue;
|
|
}
|
|
|
|
var merged = false;
|
|
for (var j = 0; j < tree1[2].length; j++) {
|
|
if (tree1[2][j][0] === tree2[2][i][0]) {
|
|
queue.push({tree1: tree1[2][j], tree2: tree2[2][i]});
|
|
merged = true;
|
|
}
|
|
}
|
|
if (!merged) {
|
|
conflicts = 'new_branch';
|
|
insertSorted(tree1[2], tree2[2][i], compareTree);
|
|
}
|
|
}
|
|
}
|
|
return {conflicts: conflicts, tree: in_tree1};
|
|
}
|
|
|
|
function doMerge(tree, path, dontExpand) {
|
|
var restree = [];
|
|
var conflicts = false;
|
|
var merged = false;
|
|
var res;
|
|
|
|
if (!tree.length) {
|
|
return {tree: [path], conflicts: 'new_leaf'};
|
|
}
|
|
|
|
for (var i = 0, len = tree.length; i < len; i++) {
|
|
var branch = tree[i];
|
|
if (branch.pos === path.pos && branch.ids[0] === path.ids[0]) {
|
|
// Paths start at the same position and have the same root, so they need
|
|
// merged
|
|
res = mergeTree(branch.ids, path.ids);
|
|
restree.push({pos: branch.pos, ids: res.tree});
|
|
conflicts = conflicts || res.conflicts;
|
|
merged = true;
|
|
} else if (dontExpand !== true) {
|
|
// The paths start at a different position, take the earliest path and
|
|
// traverse up until it as at the same point from root as the path we
|
|
// want to merge. If the keys match we return the longer path with the
|
|
// other merged After stemming we dont want to expand the trees
|
|
|
|
var t1 = branch.pos < path.pos ? branch : path;
|
|
var t2 = branch.pos < path.pos ? path : branch;
|
|
var diff = t2.pos - t1.pos;
|
|
|
|
var candidateParents = [];
|
|
|
|
var trees = [];
|
|
trees.push({ids: t1.ids, diff: diff, parent: null, parentIdx: null});
|
|
while (trees.length > 0) {
|
|
var item = trees.pop();
|
|
if (item.diff === 0) {
|
|
if (item.ids[0] === t2.ids[0]) {
|
|
candidateParents.push(item);
|
|
}
|
|
continue;
|
|
}
|
|
var elements = item.ids[2];
|
|
for (var j = 0, elementsLen = elements.length; j < elementsLen; j++) {
|
|
trees.push({
|
|
ids: elements[j],
|
|
diff: item.diff - 1,
|
|
parent: item.ids,
|
|
parentIdx: j
|
|
});
|
|
}
|
|
}
|
|
|
|
var el = candidateParents[0];
|
|
|
|
if (!el) {
|
|
restree.push(branch);
|
|
} else {
|
|
res = mergeTree(el.ids, t2.ids);
|
|
el.parent[2][el.parentIdx] = res.tree;
|
|
restree.push({pos: t1.pos, ids: t1.ids});
|
|
conflicts = conflicts || res.conflicts;
|
|
merged = true;
|
|
}
|
|
} else {
|
|
restree.push(branch);
|
|
}
|
|
}
|
|
|
|
// We didnt find
|
|
if (!merged) {
|
|
restree.push(path);
|
|
}
|
|
|
|
restree.sort(sortByPos$1);
|
|
|
|
return {
|
|
tree: restree,
|
|
conflicts: conflicts || 'internal_node'
|
|
};
|
|
}
|
|
|
|
// To ensure we dont grow the revision tree infinitely, we stem old revisions
|
|
function stem(tree, depth) {
|
|
// First we break out the tree into a complete list of root to leaf paths
|
|
var paths = rootToLeaf(tree);
|
|
var maybeStem = {};
|
|
|
|
var result;
|
|
for (var i = 0, len = paths.length; i < len; i++) {
|
|
// Then for each path, we cut off the start of the path based on the
|
|
// `depth` to stem to, and generate a new set of flat trees
|
|
var path = paths[i];
|
|
var stemmed = path.ids;
|
|
var numStemmed = Math.max(0, stemmed.length - depth);
|
|
var stemmedNode = {
|
|
pos: path.pos + numStemmed,
|
|
ids: pathToTree(stemmed, numStemmed)
|
|
};
|
|
|
|
for (var s = 0; s < numStemmed; s++) {
|
|
var rev = (path.pos + s) + '-' + stemmed[s].id;
|
|
maybeStem[rev] = true;
|
|
}
|
|
|
|
// Then we remerge all those flat trees together, ensuring that we dont
|
|
// connect trees that would go beyond the depth limit
|
|
if (result) {
|
|
result = doMerge(result, stemmedNode, true).tree;
|
|
} else {
|
|
result = [stemmedNode];
|
|
}
|
|
}
|
|
|
|
traverseRevTree(result, function (isLeaf, pos, revHash) {
|
|
// some revisions may have been removed in a branch but not in another
|
|
delete maybeStem[pos + '-' + revHash];
|
|
});
|
|
|
|
return {
|
|
tree: result,
|
|
revs: Object.keys(maybeStem)
|
|
};
|
|
}
|
|
|
|
function merge(tree, path, depth) {
|
|
var newTree = doMerge(tree, path);
|
|
var stemmed = stem(newTree.tree, depth);
|
|
return {
|
|
tree: stemmed.tree,
|
|
stemmedRevs: stemmed.revs,
|
|
conflicts: newTree.conflicts
|
|
};
|
|
}
|
|
|
|
// return true if a rev exists in the rev tree, false otherwise
|
|
function revExists(revs, rev) {
|
|
var toVisit = revs.slice();
|
|
var splitRev = rev.split('-');
|
|
var targetPos = parseInt(splitRev[0], 10);
|
|
var targetId = splitRev[1];
|
|
|
|
var node;
|
|
while ((node = toVisit.pop())) {
|
|
if (node.pos === targetPos && node.ids[0] === targetId) {
|
|
return true;
|
|
}
|
|
var branches = node.ids[2];
|
|
for (var i = 0, len = branches.length; i < len; i++) {
|
|
toVisit.push({pos: node.pos + 1, ids: branches[i]});
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function updateDoc(revLimit, prev, docInfo, results,
|
|
i, cb, writeDoc, newEdits) {
|
|
|
|
if (revExists(prev.rev_tree, docInfo.metadata.rev)) {
|
|
results[i] = docInfo;
|
|
return cb();
|
|
}
|
|
|
|
// sometimes this is pre-calculated. historically not always
|
|
var previousWinningRev = prev.winningRev || winningRev(prev);
|
|
var previouslyDeleted = 'deleted' in prev ? prev.deleted :
|
|
isDeleted(prev, previousWinningRev);
|
|
var deleted = 'deleted' in docInfo.metadata ? docInfo.metadata.deleted :
|
|
isDeleted(docInfo.metadata);
|
|
var isRoot = /^1-/.test(docInfo.metadata.rev);
|
|
|
|
if (previouslyDeleted && !deleted && newEdits && isRoot) {
|
|
var newDoc = docInfo.data;
|
|
newDoc._rev = previousWinningRev;
|
|
newDoc._id = docInfo.metadata.id;
|
|
docInfo = parseDoc(newDoc, newEdits);
|
|
}
|
|
|
|
var merged = merge(prev.rev_tree, docInfo.metadata.rev_tree[0], revLimit);
|
|
|
|
var inConflict = newEdits && (((previouslyDeleted && deleted) ||
|
|
(!previouslyDeleted && merged.conflicts !== 'new_leaf') ||
|
|
(previouslyDeleted && !deleted && merged.conflicts === 'new_branch')));
|
|
|
|
if (inConflict) {
|
|
var err = createError(REV_CONFLICT);
|
|
results[i] = err;
|
|
return cb();
|
|
}
|
|
|
|
var newRev = docInfo.metadata.rev;
|
|
docInfo.metadata.rev_tree = merged.tree;
|
|
docInfo.stemmedRevs = merged.stemmedRevs || [];
|
|
/* istanbul ignore else */
|
|
if (prev.rev_map) {
|
|
docInfo.metadata.rev_map = prev.rev_map; // used only by leveldb
|
|
}
|
|
|
|
// recalculate
|
|
var winningRev$$ = winningRev(docInfo.metadata);
|
|
var winningRevIsDeleted = isDeleted(docInfo.metadata, winningRev$$);
|
|
|
|
// calculate the total number of documents that were added/removed,
|
|
// from the perspective of total_rows/doc_count
|
|
var delta = (previouslyDeleted === winningRevIsDeleted) ? 0 :
|
|
previouslyDeleted < winningRevIsDeleted ? -1 : 1;
|
|
|
|
var newRevIsDeleted;
|
|
if (newRev === winningRev$$) {
|
|
// if the new rev is the same as the winning rev, we can reuse that value
|
|
newRevIsDeleted = winningRevIsDeleted;
|
|
} else {
|
|
// if they're not the same, then we need to recalculate
|
|
newRevIsDeleted = isDeleted(docInfo.metadata, newRev);
|
|
}
|
|
|
|
writeDoc(docInfo, winningRev$$, winningRevIsDeleted, newRevIsDeleted,
|
|
true, delta, i, cb);
|
|
}
|
|
|
|
function rootIsMissing(docInfo) {
|
|
return docInfo.metadata.rev_tree[0].ids[1].status === 'missing';
|
|
}
|
|
|
|
function processDocs(revLimit, docInfos, api, fetchedDocs, tx, results,
|
|
writeDoc, opts, overallCallback) {
|
|
|
|
// Default to 1000 locally
|
|
revLimit = revLimit || 1000;
|
|
|
|
function insertDoc(docInfo, resultsIdx, callback) {
|
|
// Cant insert new deleted documents
|
|
var winningRev$$ = winningRev(docInfo.metadata);
|
|
var deleted = isDeleted(docInfo.metadata, winningRev$$);
|
|
if ('was_delete' in opts && deleted) {
|
|
results[resultsIdx] = createError(MISSING_DOC, 'deleted');
|
|
return callback();
|
|
}
|
|
|
|
// 4712 - detect whether a new document was inserted with a _rev
|
|
var inConflict = newEdits && rootIsMissing(docInfo);
|
|
|
|
if (inConflict) {
|
|
var err = createError(REV_CONFLICT);
|
|
results[resultsIdx] = err;
|
|
return callback();
|
|
}
|
|
|
|
var delta = deleted ? 0 : 1;
|
|
|
|
writeDoc(docInfo, winningRev$$, deleted, deleted, false,
|
|
delta, resultsIdx, callback);
|
|
}
|
|
|
|
var newEdits = opts.new_edits;
|
|
var idsToDocs = new pouchdbCollections.Map();
|
|
|
|
var docsDone = 0;
|
|
var docsToDo = docInfos.length;
|
|
|
|
function checkAllDocsDone() {
|
|
if (++docsDone === docsToDo && overallCallback) {
|
|
overallCallback();
|
|
}
|
|
}
|
|
|
|
docInfos.forEach(function (currentDoc, resultsIdx) {
|
|
|
|
if (currentDoc._id && isLocalId(currentDoc._id)) {
|
|
var fun = currentDoc._deleted ? '_removeLocal' : '_putLocal';
|
|
api[fun](currentDoc, {ctx: tx}, function (err, res) {
|
|
results[resultsIdx] = err || res;
|
|
checkAllDocsDone();
|
|
});
|
|
return;
|
|
}
|
|
|
|
var id = currentDoc.metadata.id;
|
|
if (idsToDocs.has(id)) {
|
|
docsToDo--; // duplicate
|
|
idsToDocs.get(id).push([currentDoc, resultsIdx]);
|
|
} else {
|
|
idsToDocs.set(id, [[currentDoc, resultsIdx]]);
|
|
}
|
|
});
|
|
|
|
// in the case of new_edits, the user can provide multiple docs
|
|
// with the same id. these need to be processed sequentially
|
|
idsToDocs.forEach(function (docs, id) {
|
|
var numDone = 0;
|
|
|
|
function docWritten() {
|
|
if (++numDone < docs.length) {
|
|
nextDoc();
|
|
} else {
|
|
checkAllDocsDone();
|
|
}
|
|
}
|
|
function nextDoc() {
|
|
var value = docs[numDone];
|
|
var currentDoc = value[0];
|
|
var resultsIdx = value[1];
|
|
|
|
if (fetchedDocs.has(id)) {
|
|
updateDoc(revLimit, fetchedDocs.get(id), currentDoc, results,
|
|
resultsIdx, docWritten, writeDoc, newEdits);
|
|
} else {
|
|
// Ensure stemming applies to new writes as well
|
|
var merged = merge([], currentDoc.metadata.rev_tree[0], revLimit);
|
|
currentDoc.metadata.rev_tree = merged.tree;
|
|
currentDoc.stemmedRevs = merged.stemmedRevs || [];
|
|
insertDoc(currentDoc, resultsIdx, docWritten);
|
|
}
|
|
}
|
|
nextDoc();
|
|
});
|
|
}
|
|
|
|
// compact a tree by marking its non-leafs as missing,
|
|
// and return a list of revs to delete
|
|
function compactTree(metadata) {
|
|
var revs = [];
|
|
traverseRevTree(metadata.rev_tree, function (isLeaf, pos,
|
|
revHash, ctx, opts) {
|
|
if (opts.status === 'available' && !isLeaf) {
|
|
revs.push(pos + '-' + revHash);
|
|
opts.status = 'missing';
|
|
}
|
|
});
|
|
return revs;
|
|
}
|
|
|
|
// IndexedDB requires a versioned database structure, so we use the
|
|
// version here to manage migrations.
|
|
var ADAPTER_VERSION = 5;
|
|
|
|
// The object stores created for each database
|
|
// DOC_STORE stores the document meta data, its revision history and state
|
|
// Keyed by document id
|
|
var DOC_STORE = 'document-store';
|
|
// BY_SEQ_STORE stores a particular version of a document, keyed by its
|
|
// sequence id
|
|
var BY_SEQ_STORE = 'by-sequence';
|
|
// Where we store attachments
|
|
var ATTACH_STORE = 'attach-store';
|
|
// Where we store many-to-many relations
|
|
// between attachment digests and seqs
|
|
var ATTACH_AND_SEQ_STORE = 'attach-seq-store';
|
|
|
|
// Where we store database-wide meta data in a single record
|
|
// keyed by id: META_STORE
|
|
var META_STORE = 'meta-store';
|
|
// Where we store local documents
|
|
var LOCAL_STORE = 'local-store';
|
|
// Where we detect blob support
|
|
var DETECT_BLOB_SUPPORT_STORE = 'detect-blob-support';
|
|
|
|
function slowJsonParse(str) {
|
|
try {
|
|
return JSON.parse(str);
|
|
} catch (e) {
|
|
/* istanbul ignore next */
|
|
return vuvuzela.parse(str);
|
|
}
|
|
}
|
|
|
|
function safeJsonParse(str) {
|
|
// try/catch is deoptimized in V8, leading to slower
|
|
// times than we'd like to have. Most documents are _not_
|
|
// huge, and do not require a slower code path just to parse them.
|
|
// We can be pretty sure that a document under 50000 characters
|
|
// will not be so deeply nested as to throw a stack overflow error
|
|
// (depends on the engine and available memory, though, so this is
|
|
// just a hunch). 50000 was chosen based on the average length
|
|
// of this string in our test suite, to try to find a number that covers
|
|
// most of our test cases (26 over this size, 26378 under it).
|
|
if (str.length < 50000) {
|
|
return JSON.parse(str);
|
|
}
|
|
return slowJsonParse(str);
|
|
}
|
|
|
|
function safeJsonStringify(json) {
|
|
try {
|
|
return JSON.stringify(json);
|
|
} catch (e) {
|
|
/* istanbul ignore next */
|
|
return vuvuzela.stringify(json);
|
|
}
|
|
}
|
|
|
|
function tryCode$1(fun, that, args, PouchDB) {
|
|
try {
|
|
fun.apply(that, args);
|
|
} catch (err) {
|
|
// Shouldn't happen, but in some odd cases
|
|
// IndexedDB implementations might throw a sync
|
|
// error, in which case this will at least log it.
|
|
PouchDB.emit('error', err);
|
|
}
|
|
}
|
|
|
|
var taskQueue = {
|
|
running: false,
|
|
queue: []
|
|
};
|
|
|
|
function applyNext(PouchDB) {
|
|
if (taskQueue.running || !taskQueue.queue.length) {
|
|
return;
|
|
}
|
|
taskQueue.running = true;
|
|
var item = taskQueue.queue.shift();
|
|
item.action(function (err, res) {
|
|
tryCode$1(item.callback, this, [err, res], PouchDB);
|
|
taskQueue.running = false;
|
|
process.nextTick(function () {
|
|
applyNext(PouchDB);
|
|
});
|
|
});
|
|
}
|
|
|
|
function idbError(callback) {
|
|
return function (evt) {
|
|
var message = 'unknown_error';
|
|
if (evt.target && evt.target.error) {
|
|
message = evt.target.error.name || evt.target.error.message;
|
|
}
|
|
callback(createError(IDB_ERROR, message, evt.type));
|
|
};
|
|
}
|
|
|
|
// Unfortunately, the metadata has to be stringified
|
|
// when it is put into the database, because otherwise
|
|
// IndexedDB can throw errors for deeply-nested objects.
|
|
// Originally we just used JSON.parse/JSON.stringify; now
|
|
// we use this custom vuvuzela library that avoids recursion.
|
|
// If we could do it all over again, we'd probably use a
|
|
// format for the revision trees other than JSON.
|
|
function encodeMetadata(metadata, winningRev, deleted) {
|
|
return {
|
|
data: safeJsonStringify(metadata),
|
|
winningRev: winningRev,
|
|
deletedOrLocal: deleted ? '1' : '0',
|
|
seq: metadata.seq, // highest seq for this doc
|
|
id: metadata.id
|
|
};
|
|
}
|
|
|
|
function decodeMetadata(storedObject) {
|
|
if (!storedObject) {
|
|
return null;
|
|
}
|
|
var metadata = safeJsonParse(storedObject.data);
|
|
metadata.winningRev = storedObject.winningRev;
|
|
metadata.deleted = storedObject.deletedOrLocal === '1';
|
|
metadata.seq = storedObject.seq;
|
|
return metadata;
|
|
}
|
|
|
|
// read the doc back out from the database. we don't store the
|
|
// _id or _rev because we already have _doc_id_rev.
|
|
function decodeDoc(doc) {
|
|
if (!doc) {
|
|
return doc;
|
|
}
|
|
var idx = doc._doc_id_rev.lastIndexOf(':');
|
|
doc._id = doc._doc_id_rev.substring(0, idx - 1);
|
|
doc._rev = doc._doc_id_rev.substring(idx + 1);
|
|
delete doc._doc_id_rev;
|
|
return doc;
|
|
}
|
|
|
|
// Read a blob from the database, encoding as necessary
|
|
// and translating from base64 if the IDB doesn't support
|
|
// native Blobs
|
|
function readBlobData(body, type, asBlob, callback) {
|
|
if (asBlob) {
|
|
if (!body) {
|
|
callback(createBlob([''], {type: type}));
|
|
} else if (typeof body !== 'string') { // we have blob support
|
|
callback(body);
|
|
} else { // no blob support
|
|
callback(b64ToBluffer(body, type));
|
|
}
|
|
} else { // as base64 string
|
|
if (!body) {
|
|
callback('');
|
|
} else if (typeof body !== 'string') { // we have blob support
|
|
readAsBinaryString(body, function (binary) {
|
|
callback(btoa$1(binary));
|
|
});
|
|
} else { // no blob support
|
|
callback(body);
|
|
}
|
|
}
|
|
}
|
|
|
|
function fetchAttachmentsIfNecessary(doc, opts, txn, cb) {
|
|
var attachments = Object.keys(doc._attachments || {});
|
|
if (!attachments.length) {
|
|
return cb && cb();
|
|
}
|
|
var numDone = 0;
|
|
|
|
function checkDone() {
|
|
if (++numDone === attachments.length && cb) {
|
|
cb();
|
|
}
|
|
}
|
|
|
|
function fetchAttachment(doc, att) {
|
|
var attObj = doc._attachments[att];
|
|
var digest = attObj.digest;
|
|
var req = txn.objectStore(ATTACH_STORE).get(digest);
|
|
req.onsuccess = function (e) {
|
|
attObj.body = e.target.result.body;
|
|
checkDone();
|
|
};
|
|
}
|
|
|
|
attachments.forEach(function (att) {
|
|
if (opts.attachments && opts.include_docs) {
|
|
fetchAttachment(doc, att);
|
|
} else {
|
|
doc._attachments[att].stub = true;
|
|
checkDone();
|
|
}
|
|
});
|
|
}
|
|
|
|
// IDB-specific postprocessing necessary because
|
|
// we don't know whether we stored a true Blob or
|
|
// a base64-encoded string, and if it's a Blob it
|
|
// needs to be read outside of the transaction context
|
|
function postProcessAttachments(results, asBlob) {
|
|
return PouchPromise.all(results.map(function (row) {
|
|
if (row.doc && row.doc._attachments) {
|
|
var attNames = Object.keys(row.doc._attachments);
|
|
return PouchPromise.all(attNames.map(function (att) {
|
|
var attObj = row.doc._attachments[att];
|
|
if (!('body' in attObj)) { // already processed
|
|
return;
|
|
}
|
|
var body = attObj.body;
|
|
var type = attObj.content_type;
|
|
return new PouchPromise(function (resolve) {
|
|
readBlobData(body, type, asBlob, function (data) {
|
|
row.doc._attachments[att] = jsExtend.extend(
|
|
pick(attObj, ['digest', 'content_type']),
|
|
{data: data}
|
|
);
|
|
resolve();
|
|
});
|
|
});
|
|
}));
|
|
}
|
|
}));
|
|
}
|
|
|
|
function compactRevs(revs, docId, txn) {
|
|
|
|
var possiblyOrphanedDigests = [];
|
|
var seqStore = txn.objectStore(BY_SEQ_STORE);
|
|
var attStore = txn.objectStore(ATTACH_STORE);
|
|
var attAndSeqStore = txn.objectStore(ATTACH_AND_SEQ_STORE);
|
|
var count = revs.length;
|
|
|
|
function checkDone() {
|
|
count--;
|
|
if (!count) { // done processing all revs
|
|
deleteOrphanedAttachments();
|
|
}
|
|
}
|
|
|
|
function deleteOrphanedAttachments() {
|
|
if (!possiblyOrphanedDigests.length) {
|
|
return;
|
|
}
|
|
possiblyOrphanedDigests.forEach(function (digest) {
|
|
var countReq = attAndSeqStore.index('digestSeq').count(
|
|
IDBKeyRange.bound(
|
|
digest + '::', digest + '::\uffff', false, false));
|
|
countReq.onsuccess = function (e) {
|
|
var count = e.target.result;
|
|
if (!count) {
|
|
// orphaned
|
|
attStore.delete(digest);
|
|
}
|
|
};
|
|
});
|
|
}
|
|
|
|
revs.forEach(function (rev) {
|
|
var index = seqStore.index('_doc_id_rev');
|
|
var key = docId + "::" + rev;
|
|
index.getKey(key).onsuccess = function (e) {
|
|
var seq = e.target.result;
|
|
if (typeof seq !== 'number') {
|
|
return checkDone();
|
|
}
|
|
seqStore.delete(seq);
|
|
|
|
var cursor = attAndSeqStore.index('seq')
|
|
.openCursor(IDBKeyRange.only(seq));
|
|
|
|
cursor.onsuccess = function (event) {
|
|
var cursor = event.target.result;
|
|
if (cursor) {
|
|
var digest = cursor.value.digestSeq.split('::')[0];
|
|
possiblyOrphanedDigests.push(digest);
|
|
attAndSeqStore.delete(cursor.primaryKey);
|
|
cursor.continue();
|
|
} else { // done
|
|
checkDone();
|
|
}
|
|
};
|
|
};
|
|
});
|
|
}
|
|
|
|
function openTransactionSafely(idb, stores, mode) {
|
|
try {
|
|
return {
|
|
txn: idb.transaction(stores, mode)
|
|
};
|
|
} catch (err) {
|
|
return {
|
|
error: err
|
|
};
|
|
}
|
|
}
|
|
|
|
function idbBulkDocs(dbOpts, req, opts, api, idb, idbChanges, callback) {
|
|
var docInfos = req.docs;
|
|
var txn;
|
|
var docStore;
|
|
var bySeqStore;
|
|
var attachStore;
|
|
var attachAndSeqStore;
|
|
var docInfoError;
|
|
var docCountDelta = 0;
|
|
|
|
for (var i = 0, len = docInfos.length; i < len; i++) {
|
|
var doc = docInfos[i];
|
|
if (doc._id && isLocalId(doc._id)) {
|
|
continue;
|
|
}
|
|
doc = docInfos[i] = parseDoc(doc, opts.new_edits);
|
|
if (doc.error && !docInfoError) {
|
|
docInfoError = doc;
|
|
}
|
|
}
|
|
|
|
if (docInfoError) {
|
|
return callback(docInfoError);
|
|
}
|
|
|
|
var results = new Array(docInfos.length);
|
|
var fetchedDocs = new pouchdbCollections.Map();
|
|
var preconditionErrored = false;
|
|
var blobType = api._meta.blobSupport ? 'blob' : 'base64';
|
|
|
|
preprocessAttachments$1(docInfos, blobType, function (err) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
startTransaction();
|
|
});
|
|
|
|
function startTransaction() {
|
|
|
|
var stores = [
|
|
DOC_STORE, BY_SEQ_STORE,
|
|
ATTACH_STORE,
|
|
LOCAL_STORE, ATTACH_AND_SEQ_STORE
|
|
];
|
|
var txnResult = openTransactionSafely(idb, stores, 'readwrite');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
txn = txnResult.txn;
|
|
txn.onabort = idbError(callback);
|
|
txn.ontimeout = idbError(callback);
|
|
txn.oncomplete = complete;
|
|
docStore = txn.objectStore(DOC_STORE);
|
|
bySeqStore = txn.objectStore(BY_SEQ_STORE);
|
|
attachStore = txn.objectStore(ATTACH_STORE);
|
|
attachAndSeqStore = txn.objectStore(ATTACH_AND_SEQ_STORE);
|
|
|
|
verifyAttachments(function (err) {
|
|
if (err) {
|
|
preconditionErrored = true;
|
|
return callback(err);
|
|
}
|
|
fetchExistingDocs();
|
|
});
|
|
}
|
|
|
|
function idbProcessDocs() {
|
|
processDocs(dbOpts.revs_limit, docInfos, api, fetchedDocs,
|
|
txn, results, writeDoc, opts);
|
|
}
|
|
|
|
function fetchExistingDocs() {
|
|
|
|
if (!docInfos.length) {
|
|
return;
|
|
}
|
|
|
|
var numFetched = 0;
|
|
|
|
function checkDone() {
|
|
if (++numFetched === docInfos.length) {
|
|
idbProcessDocs();
|
|
}
|
|
}
|
|
|
|
function readMetadata(event) {
|
|
var metadata = decodeMetadata(event.target.result);
|
|
|
|
if (metadata) {
|
|
fetchedDocs.set(metadata.id, metadata);
|
|
}
|
|
checkDone();
|
|
}
|
|
|
|
for (var i = 0, len = docInfos.length; i < len; i++) {
|
|
var docInfo = docInfos[i];
|
|
if (docInfo._id && isLocalId(docInfo._id)) {
|
|
checkDone(); // skip local docs
|
|
continue;
|
|
}
|
|
var req = docStore.get(docInfo.metadata.id);
|
|
req.onsuccess = readMetadata;
|
|
}
|
|
}
|
|
|
|
function complete() {
|
|
if (preconditionErrored) {
|
|
return;
|
|
}
|
|
|
|
idbChanges.notify(api._meta.name);
|
|
api._meta.docCount += docCountDelta;
|
|
callback(null, results);
|
|
}
|
|
|
|
function verifyAttachment(digest, callback) {
|
|
|
|
var req = attachStore.get(digest);
|
|
req.onsuccess = function (e) {
|
|
if (!e.target.result) {
|
|
var err = createError(MISSING_STUB,
|
|
'unknown stub attachment with digest ' +
|
|
digest);
|
|
err.status = 412;
|
|
callback(err);
|
|
} else {
|
|
callback();
|
|
}
|
|
};
|
|
}
|
|
|
|
function verifyAttachments(finish) {
|
|
|
|
|
|
var digests = [];
|
|
docInfos.forEach(function (docInfo) {
|
|
if (docInfo.data && docInfo.data._attachments) {
|
|
Object.keys(docInfo.data._attachments).forEach(function (filename) {
|
|
var att = docInfo.data._attachments[filename];
|
|
if (att.stub) {
|
|
digests.push(att.digest);
|
|
}
|
|
});
|
|
}
|
|
});
|
|
if (!digests.length) {
|
|
return finish();
|
|
}
|
|
var numDone = 0;
|
|
var err;
|
|
|
|
function checkDone() {
|
|
if (++numDone === digests.length) {
|
|
finish(err);
|
|
}
|
|
}
|
|
digests.forEach(function (digest) {
|
|
verifyAttachment(digest, function (attErr) {
|
|
if (attErr && !err) {
|
|
err = attErr;
|
|
}
|
|
checkDone();
|
|
});
|
|
});
|
|
}
|
|
|
|
function writeDoc(docInfo, winningRev, winningRevIsDeleted, newRevIsDeleted,
|
|
isUpdate, delta, resultsIdx, callback) {
|
|
|
|
docCountDelta += delta;
|
|
|
|
docInfo.metadata.winningRev = winningRev;
|
|
docInfo.metadata.deleted = winningRevIsDeleted;
|
|
|
|
var doc = docInfo.data;
|
|
doc._id = docInfo.metadata.id;
|
|
doc._rev = docInfo.metadata.rev;
|
|
|
|
if (newRevIsDeleted) {
|
|
doc._deleted = true;
|
|
}
|
|
|
|
var hasAttachments = doc._attachments &&
|
|
Object.keys(doc._attachments).length;
|
|
if (hasAttachments) {
|
|
return writeAttachments(docInfo, winningRev, winningRevIsDeleted,
|
|
isUpdate, resultsIdx, callback);
|
|
}
|
|
|
|
finishDoc(docInfo, winningRev, winningRevIsDeleted,
|
|
isUpdate, resultsIdx, callback);
|
|
}
|
|
|
|
function autoCompact(docInfo) {
|
|
|
|
var revsToDelete = compactTree(docInfo.metadata);
|
|
compactRevs(revsToDelete, docInfo.metadata.id, txn);
|
|
}
|
|
|
|
function finishDoc(docInfo, winningRev, winningRevIsDeleted,
|
|
isUpdate, resultsIdx, callback) {
|
|
|
|
var doc = docInfo.data;
|
|
var metadata = docInfo.metadata;
|
|
|
|
doc._doc_id_rev = metadata.id + '::' + metadata.rev;
|
|
delete doc._id;
|
|
delete doc._rev;
|
|
|
|
function afterPutDoc(e) {
|
|
if (isUpdate && api.auto_compaction) {
|
|
autoCompact(docInfo);
|
|
} else if (docInfo.stemmedRevs.length) {
|
|
compactRevs(docInfo.stemmedRevs, docInfo.metadata.id, txn);
|
|
}
|
|
|
|
metadata.seq = e.target.result;
|
|
// Current _rev is calculated from _rev_tree on read
|
|
delete metadata.rev;
|
|
var metadataToStore = encodeMetadata(metadata, winningRev,
|
|
winningRevIsDeleted);
|
|
var metaDataReq = docStore.put(metadataToStore);
|
|
metaDataReq.onsuccess = afterPutMetadata;
|
|
}
|
|
|
|
function afterPutDocError(e) {
|
|
// ConstraintError, need to update, not put (see #1638 for details)
|
|
e.preventDefault(); // avoid transaction abort
|
|
e.stopPropagation(); // avoid transaction onerror
|
|
var index = bySeqStore.index('_doc_id_rev');
|
|
var getKeyReq = index.getKey(doc._doc_id_rev);
|
|
getKeyReq.onsuccess = function (e) {
|
|
var putReq = bySeqStore.put(doc, e.target.result);
|
|
putReq.onsuccess = afterPutDoc;
|
|
};
|
|
}
|
|
|
|
function afterPutMetadata() {
|
|
results[resultsIdx] = {
|
|
ok: true,
|
|
id: metadata.id,
|
|
rev: winningRev
|
|
};
|
|
fetchedDocs.set(docInfo.metadata.id, docInfo.metadata);
|
|
insertAttachmentMappings(docInfo, metadata.seq, callback);
|
|
}
|
|
|
|
var putReq = bySeqStore.put(doc);
|
|
|
|
putReq.onsuccess = afterPutDoc;
|
|
putReq.onerror = afterPutDocError;
|
|
}
|
|
|
|
function writeAttachments(docInfo, winningRev, winningRevIsDeleted,
|
|
isUpdate, resultsIdx, callback) {
|
|
|
|
|
|
var doc = docInfo.data;
|
|
|
|
var numDone = 0;
|
|
var attachments = Object.keys(doc._attachments);
|
|
|
|
function collectResults() {
|
|
if (numDone === attachments.length) {
|
|
finishDoc(docInfo, winningRev, winningRevIsDeleted,
|
|
isUpdate, resultsIdx, callback);
|
|
}
|
|
}
|
|
|
|
function attachmentSaved() {
|
|
numDone++;
|
|
collectResults();
|
|
}
|
|
|
|
attachments.forEach(function (key) {
|
|
var att = docInfo.data._attachments[key];
|
|
if (!att.stub) {
|
|
var data = att.data;
|
|
delete att.data;
|
|
att.revpos = parseInt(winningRev, 10);
|
|
var digest = att.digest;
|
|
saveAttachment(digest, data, attachmentSaved);
|
|
} else {
|
|
numDone++;
|
|
collectResults();
|
|
}
|
|
});
|
|
}
|
|
|
|
// map seqs to attachment digests, which
|
|
// we will need later during compaction
|
|
function insertAttachmentMappings(docInfo, seq, callback) {
|
|
|
|
var attsAdded = 0;
|
|
var attsToAdd = Object.keys(docInfo.data._attachments || {});
|
|
|
|
if (!attsToAdd.length) {
|
|
return callback();
|
|
}
|
|
|
|
function checkDone() {
|
|
if (++attsAdded === attsToAdd.length) {
|
|
callback();
|
|
}
|
|
}
|
|
|
|
function add(att) {
|
|
var digest = docInfo.data._attachments[att].digest;
|
|
var req = attachAndSeqStore.put({
|
|
seq: seq,
|
|
digestSeq: digest + '::' + seq
|
|
});
|
|
|
|
req.onsuccess = checkDone;
|
|
req.onerror = function (e) {
|
|
// this callback is for a constaint error, which we ignore
|
|
// because this docid/rev has already been associated with
|
|
// the digest (e.g. when new_edits == false)
|
|
e.preventDefault(); // avoid transaction abort
|
|
e.stopPropagation(); // avoid transaction onerror
|
|
checkDone();
|
|
};
|
|
}
|
|
for (var i = 0; i < attsToAdd.length; i++) {
|
|
add(attsToAdd[i]); // do in parallel
|
|
}
|
|
}
|
|
|
|
function saveAttachment(digest, data, callback) {
|
|
|
|
|
|
var getKeyReq = attachStore.count(digest);
|
|
getKeyReq.onsuccess = function (e) {
|
|
var count = e.target.result;
|
|
if (count) {
|
|
return callback(); // already exists
|
|
}
|
|
var newAtt = {
|
|
digest: digest,
|
|
body: data
|
|
};
|
|
var putReq = attachStore.put(newAtt);
|
|
putReq.onsuccess = callback;
|
|
};
|
|
}
|
|
}
|
|
|
|
function createKeyRange(start, end, inclusiveEnd, key, descending) {
|
|
try {
|
|
if (start && end) {
|
|
if (descending) {
|
|
return IDBKeyRange.bound(end, start, !inclusiveEnd, false);
|
|
} else {
|
|
return IDBKeyRange.bound(start, end, false, !inclusiveEnd);
|
|
}
|
|
} else if (start) {
|
|
if (descending) {
|
|
return IDBKeyRange.upperBound(start);
|
|
} else {
|
|
return IDBKeyRange.lowerBound(start);
|
|
}
|
|
} else if (end) {
|
|
if (descending) {
|
|
return IDBKeyRange.lowerBound(end, !inclusiveEnd);
|
|
} else {
|
|
return IDBKeyRange.upperBound(end, !inclusiveEnd);
|
|
}
|
|
} else if (key) {
|
|
return IDBKeyRange.only(key);
|
|
}
|
|
} catch (e) {
|
|
return {error: e};
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function handleKeyRangeError(api, opts, err, callback) {
|
|
if (err.name === "DataError" && err.code === 0) {
|
|
// data error, start is less than end
|
|
return callback(null, {
|
|
total_rows: api._meta.docCount,
|
|
offset: opts.skip,
|
|
rows: []
|
|
});
|
|
}
|
|
callback(createError(IDB_ERROR, err.name, err.message));
|
|
}
|
|
|
|
function idbAllDocs(opts, api, idb, callback) {
|
|
|
|
function allDocsQuery(opts, callback) {
|
|
var start = 'startkey' in opts ? opts.startkey : false;
|
|
var end = 'endkey' in opts ? opts.endkey : false;
|
|
var key = 'key' in opts ? opts.key : false;
|
|
var skip = opts.skip || 0;
|
|
var limit = typeof opts.limit === 'number' ? opts.limit : -1;
|
|
var inclusiveEnd = opts.inclusive_end !== false;
|
|
var descending = 'descending' in opts && opts.descending ? 'prev' : null;
|
|
|
|
var keyRange = createKeyRange(start, end, inclusiveEnd, key, descending);
|
|
if (keyRange && keyRange.error) {
|
|
return handleKeyRangeError(api, opts, keyRange.error, callback);
|
|
}
|
|
|
|
var stores = [DOC_STORE, BY_SEQ_STORE];
|
|
|
|
if (opts.attachments) {
|
|
stores.push(ATTACH_STORE);
|
|
}
|
|
var txnResult = openTransactionSafely(idb, stores, 'readonly');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
var txn = txnResult.txn;
|
|
var docStore = txn.objectStore(DOC_STORE);
|
|
var seqStore = txn.objectStore(BY_SEQ_STORE);
|
|
var cursor = descending ?
|
|
docStore.openCursor(keyRange, descending) :
|
|
docStore.openCursor(keyRange);
|
|
var docIdRevIndex = seqStore.index('_doc_id_rev');
|
|
var results = [];
|
|
var docCount = 0;
|
|
|
|
// if the user specifies include_docs=true, then we don't
|
|
// want to block the main cursor while we're fetching the doc
|
|
function fetchDocAsynchronously(metadata, row, winningRev) {
|
|
var key = metadata.id + "::" + winningRev;
|
|
docIdRevIndex.get(key).onsuccess = function onGetDoc(e) {
|
|
row.doc = decodeDoc(e.target.result);
|
|
if (opts.conflicts) {
|
|
row.doc._conflicts = collectConflicts(metadata);
|
|
}
|
|
fetchAttachmentsIfNecessary(row.doc, opts, txn);
|
|
};
|
|
}
|
|
|
|
function allDocsInner(cursor, winningRev, metadata) {
|
|
var row = {
|
|
id: metadata.id,
|
|
key: metadata.id,
|
|
value: {
|
|
rev: winningRev
|
|
}
|
|
};
|
|
var deleted = metadata.deleted;
|
|
if (opts.deleted === 'ok') {
|
|
results.push(row);
|
|
// deleted docs are okay with "keys" requests
|
|
if (deleted) {
|
|
row.value.deleted = true;
|
|
row.doc = null;
|
|
} else if (opts.include_docs) {
|
|
fetchDocAsynchronously(metadata, row, winningRev);
|
|
}
|
|
} else if (!deleted && skip-- <= 0) {
|
|
results.push(row);
|
|
if (opts.include_docs) {
|
|
fetchDocAsynchronously(metadata, row, winningRev);
|
|
}
|
|
if (--limit === 0) {
|
|
return;
|
|
}
|
|
}
|
|
cursor.continue();
|
|
}
|
|
|
|
function onGetCursor(e) {
|
|
docCount = api._meta.docCount; // do this within the txn for consistency
|
|
var cursor = e.target.result;
|
|
if (!cursor) {
|
|
return;
|
|
}
|
|
var metadata = decodeMetadata(cursor.value);
|
|
var winningRev = metadata.winningRev;
|
|
|
|
allDocsInner(cursor, winningRev, metadata);
|
|
}
|
|
|
|
function onResultsReady() {
|
|
callback(null, {
|
|
total_rows: docCount,
|
|
offset: opts.skip,
|
|
rows: results
|
|
});
|
|
}
|
|
|
|
function onTxnComplete() {
|
|
if (opts.attachments) {
|
|
postProcessAttachments(results, opts.binary).then(onResultsReady);
|
|
} else {
|
|
onResultsReady();
|
|
}
|
|
}
|
|
|
|
txn.oncomplete = onTxnComplete;
|
|
cursor.onsuccess = onGetCursor;
|
|
}
|
|
|
|
function allDocs(opts, callback) {
|
|
|
|
if (opts.limit === 0) {
|
|
return callback(null, {
|
|
total_rows: api._meta.docCount,
|
|
offset: opts.skip,
|
|
rows: []
|
|
});
|
|
}
|
|
allDocsQuery(opts, callback);
|
|
}
|
|
|
|
allDocs(opts, callback);
|
|
}
|
|
|
|
//
|
|
// Blobs are not supported in all versions of IndexedDB, notably
|
|
// Chrome <37 and Android <5. In those versions, storing a blob will throw.
|
|
//
|
|
// Various other blob bugs exist in Chrome v37-42 (inclusive).
|
|
// Detecting them is expensive and confusing to users, and Chrome 37-42
|
|
// is at very low usage worldwide, so we do a hacky userAgent check instead.
|
|
//
|
|
// content-type bug: https://code.google.com/p/chromium/issues/detail?id=408120
|
|
// 404 bug: https://code.google.com/p/chromium/issues/detail?id=447916
|
|
// FileReader bug: https://code.google.com/p/chromium/issues/detail?id=447836
|
|
//
|
|
function checkBlobSupport(txn) {
|
|
return new PouchPromise(function (resolve) {
|
|
var blob = createBlob(['']);
|
|
txn.objectStore(DETECT_BLOB_SUPPORT_STORE).put(blob, 'key');
|
|
|
|
txn.onabort = function (e) {
|
|
// If the transaction aborts now its due to not being able to
|
|
// write to the database, likely due to the disk being full
|
|
e.preventDefault();
|
|
e.stopPropagation();
|
|
resolve(false);
|
|
};
|
|
|
|
txn.oncomplete = function () {
|
|
var matchedChrome = navigator.userAgent.match(/Chrome\/(\d+)/);
|
|
var matchedEdge = navigator.userAgent.match(/Edge\//);
|
|
// MS Edge pretends to be Chrome 42:
|
|
// https://msdn.microsoft.com/en-us/library/hh869301%28v=vs.85%29.aspx
|
|
resolve(matchedEdge || !matchedChrome ||
|
|
parseInt(matchedChrome[1], 10) >= 43);
|
|
};
|
|
}).catch(function () {
|
|
return false; // error, so assume unsupported
|
|
});
|
|
}
|
|
|
|
inherits(Changes$1, events.EventEmitter);
|
|
|
|
/* istanbul ignore next */
|
|
function attachBrowserEvents(self) {
|
|
if (isChromeApp()) {
|
|
chrome.storage.onChanged.addListener(function (e) {
|
|
// make sure it's event addressed to us
|
|
if (e.db_name != null) {
|
|
//object only has oldValue, newValue members
|
|
self.emit(e.dbName.newValue);
|
|
}
|
|
});
|
|
} else if (hasLocalStorage()) {
|
|
if (typeof addEventListener !== 'undefined') {
|
|
addEventListener("storage", function (e) {
|
|
self.emit(e.key);
|
|
});
|
|
} else { // old IE
|
|
window.attachEvent("storage", function (e) {
|
|
self.emit(e.key);
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
function Changes$1() {
|
|
events.EventEmitter.call(this);
|
|
this._listeners = {};
|
|
|
|
attachBrowserEvents(this);
|
|
}
|
|
Changes$1.prototype.addListener = function (dbName, id, db, opts) {
|
|
/* istanbul ignore if */
|
|
if (this._listeners[id]) {
|
|
return;
|
|
}
|
|
var self = this;
|
|
var inprogress = false;
|
|
function eventFunction() {
|
|
/* istanbul ignore if */
|
|
if (!self._listeners[id]) {
|
|
return;
|
|
}
|
|
if (inprogress) {
|
|
inprogress = 'waiting';
|
|
return;
|
|
}
|
|
inprogress = true;
|
|
var changesOpts = pick(opts, [
|
|
'style', 'include_docs', 'attachments', 'conflicts', 'filter',
|
|
'doc_ids', 'view', 'since', 'query_params', 'binary'
|
|
]);
|
|
|
|
/* istanbul ignore next */
|
|
function onError() {
|
|
inprogress = false;
|
|
}
|
|
|
|
db.changes(changesOpts).on('change', function (c) {
|
|
if (c.seq > opts.since && !opts.cancelled) {
|
|
opts.since = c.seq;
|
|
opts.onChange(c);
|
|
}
|
|
}).on('complete', function () {
|
|
if (inprogress === 'waiting') {
|
|
setTimeout(function (){
|
|
eventFunction();
|
|
},0);
|
|
}
|
|
inprogress = false;
|
|
}).on('error', onError);
|
|
}
|
|
this._listeners[id] = eventFunction;
|
|
this.on(dbName, eventFunction);
|
|
};
|
|
|
|
Changes$1.prototype.removeListener = function (dbName, id) {
|
|
/* istanbul ignore if */
|
|
if (!(id in this._listeners)) {
|
|
return;
|
|
}
|
|
events.EventEmitter.prototype.removeListener.call(this, dbName,
|
|
this._listeners[id]);
|
|
};
|
|
|
|
|
|
/* istanbul ignore next */
|
|
Changes$1.prototype.notifyLocalWindows = function (dbName) {
|
|
//do a useless change on a storage thing
|
|
//in order to get other windows's listeners to activate
|
|
if (isChromeApp()) {
|
|
chrome.storage.local.set({dbName: dbName});
|
|
} else if (hasLocalStorage()) {
|
|
localStorage[dbName] = (localStorage[dbName] === "a") ? "b" : "a";
|
|
}
|
|
};
|
|
|
|
Changes$1.prototype.notify = function (dbName) {
|
|
this.emit(dbName);
|
|
this.notifyLocalWindows(dbName);
|
|
};
|
|
|
|
var cachedDBs = new pouchdbCollections.Map();
|
|
var blobSupportPromise;
|
|
var idbChanges = new Changes$1();
|
|
var openReqList = new pouchdbCollections.Map();
|
|
|
|
function IdbPouch(opts, callback) {
|
|
var api = this;
|
|
|
|
taskQueue.queue.push({
|
|
action: function (thisCallback) {
|
|
init(api, opts, thisCallback);
|
|
},
|
|
callback: callback
|
|
});
|
|
applyNext(api.constructor);
|
|
}
|
|
|
|
function init(api, opts, callback) {
|
|
|
|
var dbName = opts.name;
|
|
|
|
var idb = null;
|
|
api._meta = null;
|
|
|
|
// called when creating a fresh new database
|
|
function createSchema(db) {
|
|
var docStore = db.createObjectStore(DOC_STORE, {keyPath : 'id'});
|
|
db.createObjectStore(BY_SEQ_STORE, {autoIncrement: true})
|
|
.createIndex('_doc_id_rev', '_doc_id_rev', {unique: true});
|
|
db.createObjectStore(ATTACH_STORE, {keyPath: 'digest'});
|
|
db.createObjectStore(META_STORE, {keyPath: 'id', autoIncrement: false});
|
|
db.createObjectStore(DETECT_BLOB_SUPPORT_STORE);
|
|
|
|
// added in v2
|
|
docStore.createIndex('deletedOrLocal', 'deletedOrLocal', {unique : false});
|
|
|
|
// added in v3
|
|
db.createObjectStore(LOCAL_STORE, {keyPath: '_id'});
|
|
|
|
// added in v4
|
|
var attAndSeqStore = db.createObjectStore(ATTACH_AND_SEQ_STORE,
|
|
{autoIncrement: true});
|
|
attAndSeqStore.createIndex('seq', 'seq');
|
|
attAndSeqStore.createIndex('digestSeq', 'digestSeq', {unique: true});
|
|
}
|
|
|
|
// migration to version 2
|
|
// unfortunately "deletedOrLocal" is a misnomer now that we no longer
|
|
// store local docs in the main doc-store, but whaddyagonnado
|
|
function addDeletedOrLocalIndex(txn, callback) {
|
|
var docStore = txn.objectStore(DOC_STORE);
|
|
docStore.createIndex('deletedOrLocal', 'deletedOrLocal', {unique : false});
|
|
|
|
docStore.openCursor().onsuccess = function (event) {
|
|
var cursor = event.target.result;
|
|
if (cursor) {
|
|
var metadata = cursor.value;
|
|
var deleted = isDeleted(metadata);
|
|
metadata.deletedOrLocal = deleted ? "1" : "0";
|
|
docStore.put(metadata);
|
|
cursor.continue();
|
|
} else {
|
|
callback();
|
|
}
|
|
};
|
|
}
|
|
|
|
// migration to version 3 (part 1)
|
|
function createLocalStoreSchema(db) {
|
|
db.createObjectStore(LOCAL_STORE, {keyPath: '_id'})
|
|
.createIndex('_doc_id_rev', '_doc_id_rev', {unique: true});
|
|
}
|
|
|
|
// migration to version 3 (part 2)
|
|
function migrateLocalStore(txn, cb) {
|
|
var localStore = txn.objectStore(LOCAL_STORE);
|
|
var docStore = txn.objectStore(DOC_STORE);
|
|
var seqStore = txn.objectStore(BY_SEQ_STORE);
|
|
|
|
var cursor = docStore.openCursor();
|
|
cursor.onsuccess = function (event) {
|
|
var cursor = event.target.result;
|
|
if (cursor) {
|
|
var metadata = cursor.value;
|
|
var docId = metadata.id;
|
|
var local = isLocalId(docId);
|
|
var rev = winningRev(metadata);
|
|
if (local) {
|
|
var docIdRev = docId + "::" + rev;
|
|
// remove all seq entries
|
|
// associated with this docId
|
|
var start = docId + "::";
|
|
var end = docId + "::~";
|
|
var index = seqStore.index('_doc_id_rev');
|
|
var range = IDBKeyRange.bound(start, end, false, false);
|
|
var seqCursor = index.openCursor(range);
|
|
seqCursor.onsuccess = function (e) {
|
|
seqCursor = e.target.result;
|
|
if (!seqCursor) {
|
|
// done
|
|
docStore.delete(cursor.primaryKey);
|
|
cursor.continue();
|
|
} else {
|
|
var data = seqCursor.value;
|
|
if (data._doc_id_rev === docIdRev) {
|
|
localStore.put(data);
|
|
}
|
|
seqStore.delete(seqCursor.primaryKey);
|
|
seqCursor.continue();
|
|
}
|
|
};
|
|
} else {
|
|
cursor.continue();
|
|
}
|
|
} else if (cb) {
|
|
cb();
|
|
}
|
|
};
|
|
}
|
|
|
|
// migration to version 4 (part 1)
|
|
function addAttachAndSeqStore(db) {
|
|
var attAndSeqStore = db.createObjectStore(ATTACH_AND_SEQ_STORE,
|
|
{autoIncrement: true});
|
|
attAndSeqStore.createIndex('seq', 'seq');
|
|
attAndSeqStore.createIndex('digestSeq', 'digestSeq', {unique: true});
|
|
}
|
|
|
|
// migration to version 4 (part 2)
|
|
function migrateAttsAndSeqs(txn, callback) {
|
|
var seqStore = txn.objectStore(BY_SEQ_STORE);
|
|
var attStore = txn.objectStore(ATTACH_STORE);
|
|
var attAndSeqStore = txn.objectStore(ATTACH_AND_SEQ_STORE);
|
|
|
|
// need to actually populate the table. this is the expensive part,
|
|
// so as an optimization, check first that this database even
|
|
// contains attachments
|
|
var req = attStore.count();
|
|
req.onsuccess = function (e) {
|
|
var count = e.target.result;
|
|
if (!count) {
|
|
return callback(); // done
|
|
}
|
|
|
|
seqStore.openCursor().onsuccess = function (e) {
|
|
var cursor = e.target.result;
|
|
if (!cursor) {
|
|
return callback(); // done
|
|
}
|
|
var doc = cursor.value;
|
|
var seq = cursor.primaryKey;
|
|
var atts = Object.keys(doc._attachments || {});
|
|
var digestMap = {};
|
|
for (var j = 0; j < atts.length; j++) {
|
|
var att = doc._attachments[atts[j]];
|
|
digestMap[att.digest] = true; // uniq digests, just in case
|
|
}
|
|
var digests = Object.keys(digestMap);
|
|
for (j = 0; j < digests.length; j++) {
|
|
var digest = digests[j];
|
|
attAndSeqStore.put({
|
|
seq: seq,
|
|
digestSeq: digest + '::' + seq
|
|
});
|
|
}
|
|
cursor.continue();
|
|
};
|
|
};
|
|
}
|
|
|
|
// migration to version 5
|
|
// Instead of relying on on-the-fly migration of metadata,
|
|
// this brings the doc-store to its modern form:
|
|
// - metadata.winningrev
|
|
// - metadata.seq
|
|
// - stringify the metadata when storing it
|
|
function migrateMetadata(txn) {
|
|
|
|
function decodeMetadataCompat(storedObject) {
|
|
if (!storedObject.data) {
|
|
// old format, when we didn't store it stringified
|
|
storedObject.deleted = storedObject.deletedOrLocal === '1';
|
|
return storedObject;
|
|
}
|
|
return decodeMetadata(storedObject);
|
|
}
|
|
|
|
// ensure that every metadata has a winningRev and seq,
|
|
// which was previously created on-the-fly but better to migrate
|
|
var bySeqStore = txn.objectStore(BY_SEQ_STORE);
|
|
var docStore = txn.objectStore(DOC_STORE);
|
|
var cursor = docStore.openCursor();
|
|
cursor.onsuccess = function (e) {
|
|
var cursor = e.target.result;
|
|
if (!cursor) {
|
|
return; // done
|
|
}
|
|
var metadata = decodeMetadataCompat(cursor.value);
|
|
|
|
metadata.winningRev = metadata.winningRev ||
|
|
winningRev(metadata);
|
|
|
|
function fetchMetadataSeq() {
|
|
// metadata.seq was added post-3.2.0, so if it's missing,
|
|
// we need to fetch it manually
|
|
var start = metadata.id + '::';
|
|
var end = metadata.id + '::\uffff';
|
|
var req = bySeqStore.index('_doc_id_rev').openCursor(
|
|
IDBKeyRange.bound(start, end));
|
|
|
|
var metadataSeq = 0;
|
|
req.onsuccess = function (e) {
|
|
var cursor = e.target.result;
|
|
if (!cursor) {
|
|
metadata.seq = metadataSeq;
|
|
return onGetMetadataSeq();
|
|
}
|
|
var seq = cursor.primaryKey;
|
|
if (seq > metadataSeq) {
|
|
metadataSeq = seq;
|
|
}
|
|
cursor.continue();
|
|
};
|
|
}
|
|
|
|
function onGetMetadataSeq() {
|
|
var metadataToStore = encodeMetadata(metadata,
|
|
metadata.winningRev, metadata.deleted);
|
|
|
|
var req = docStore.put(metadataToStore);
|
|
req.onsuccess = function () {
|
|
cursor.continue();
|
|
};
|
|
}
|
|
|
|
if (metadata.seq) {
|
|
return onGetMetadataSeq();
|
|
}
|
|
|
|
fetchMetadataSeq();
|
|
};
|
|
|
|
}
|
|
|
|
api.type = function () {
|
|
return 'idb';
|
|
};
|
|
|
|
api._id = toPromise(function (callback) {
|
|
callback(null, api._meta.instanceId);
|
|
});
|
|
|
|
api._bulkDocs = function idb_bulkDocs(req, reqOpts, callback) {
|
|
idbBulkDocs(opts, req, reqOpts, api, idb, idbChanges, callback);
|
|
};
|
|
|
|
// First we look up the metadata in the ids database, then we fetch the
|
|
// current revision(s) from the by sequence store
|
|
api._get = function idb_get(id, opts, callback) {
|
|
var doc;
|
|
var metadata;
|
|
var err;
|
|
var txn = opts.ctx;
|
|
if (!txn) {
|
|
var txnResult = openTransactionSafely(idb,
|
|
[DOC_STORE, BY_SEQ_STORE, ATTACH_STORE], 'readonly');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
txn = txnResult.txn;
|
|
}
|
|
|
|
function finish() {
|
|
callback(err, {doc: doc, metadata: metadata, ctx: txn});
|
|
}
|
|
|
|
txn.objectStore(DOC_STORE).get(id).onsuccess = function (e) {
|
|
metadata = decodeMetadata(e.target.result);
|
|
// we can determine the result here if:
|
|
// 1. there is no such document
|
|
// 2. the document is deleted and we don't ask about specific rev
|
|
// When we ask with opts.rev we expect the answer to be either
|
|
// doc (possibly with _deleted=true) or missing error
|
|
if (!metadata) {
|
|
err = createError(MISSING_DOC, 'missing');
|
|
return finish();
|
|
}
|
|
if (isDeleted(metadata) && !opts.rev) {
|
|
err = createError(MISSING_DOC, "deleted");
|
|
return finish();
|
|
}
|
|
var objectStore = txn.objectStore(BY_SEQ_STORE);
|
|
|
|
var rev = opts.rev || metadata.winningRev;
|
|
var key = metadata.id + '::' + rev;
|
|
|
|
objectStore.index('_doc_id_rev').get(key).onsuccess = function (e) {
|
|
doc = e.target.result;
|
|
if (doc) {
|
|
doc = decodeDoc(doc);
|
|
}
|
|
if (!doc) {
|
|
err = createError(MISSING_DOC, 'missing');
|
|
return finish();
|
|
}
|
|
finish();
|
|
};
|
|
};
|
|
};
|
|
|
|
api._getAttachment = function (attachment, opts, callback) {
|
|
var txn;
|
|
if (opts.ctx) {
|
|
txn = opts.ctx;
|
|
} else {
|
|
var txnResult = openTransactionSafely(idb,
|
|
[DOC_STORE, BY_SEQ_STORE, ATTACH_STORE], 'readonly');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
txn = txnResult.txn;
|
|
}
|
|
var digest = attachment.digest;
|
|
var type = attachment.content_type;
|
|
|
|
txn.objectStore(ATTACH_STORE).get(digest).onsuccess = function (e) {
|
|
var body = e.target.result.body;
|
|
readBlobData(body, type, opts.binary, function (blobData) {
|
|
callback(null, blobData);
|
|
});
|
|
};
|
|
};
|
|
|
|
api._info = function idb_info(callback) {
|
|
|
|
if (idb === null || !cachedDBs.has(dbName)) {
|
|
var error = new Error('db isn\'t open');
|
|
error.id = 'idbNull';
|
|
return callback(error);
|
|
}
|
|
var updateSeq;
|
|
var docCount;
|
|
|
|
var txnResult = openTransactionSafely(idb, [BY_SEQ_STORE], 'readonly');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
var txn = txnResult.txn;
|
|
var cursor = txn.objectStore(BY_SEQ_STORE).openCursor(null, 'prev');
|
|
cursor.onsuccess = function (event) {
|
|
var cursor = event.target.result;
|
|
updateSeq = cursor ? cursor.key : 0;
|
|
// count within the same txn for consistency
|
|
docCount = api._meta.docCount;
|
|
};
|
|
|
|
txn.oncomplete = function () {
|
|
callback(null, {
|
|
doc_count: docCount,
|
|
update_seq: updateSeq,
|
|
// for debugging
|
|
idb_attachment_format: (api._meta.blobSupport ? 'binary' : 'base64')
|
|
});
|
|
};
|
|
};
|
|
|
|
api._allDocs = function idb_allDocs(opts, callback) {
|
|
idbAllDocs(opts, api, idb, callback);
|
|
};
|
|
|
|
api._changes = function (opts) {
|
|
opts = clone(opts);
|
|
|
|
if (opts.continuous) {
|
|
var id = dbName + ':' + uuid();
|
|
idbChanges.addListener(dbName, id, api, opts);
|
|
idbChanges.notify(dbName);
|
|
return {
|
|
cancel: function () {
|
|
idbChanges.removeListener(dbName, id);
|
|
}
|
|
};
|
|
}
|
|
|
|
var docIds = opts.doc_ids && new pouchdbCollections.Set(opts.doc_ids);
|
|
|
|
opts.since = opts.since || 0;
|
|
var lastSeq = opts.since;
|
|
|
|
var limit = 'limit' in opts ? opts.limit : -1;
|
|
if (limit === 0) {
|
|
limit = 1; // per CouchDB _changes spec
|
|
}
|
|
var returnDocs;
|
|
if ('return_docs' in opts) {
|
|
returnDocs = opts.return_docs;
|
|
} else if ('returnDocs' in opts) {
|
|
// TODO: Remove 'returnDocs' in favor of 'return_docs' in a future release
|
|
returnDocs = opts.returnDocs;
|
|
} else {
|
|
returnDocs = true;
|
|
}
|
|
|
|
var results = [];
|
|
var numResults = 0;
|
|
var filter = filterChange(opts);
|
|
var docIdsToMetadata = new pouchdbCollections.Map();
|
|
|
|
var txn;
|
|
var bySeqStore;
|
|
var docStore;
|
|
var docIdRevIndex;
|
|
|
|
function onGetCursor(cursor) {
|
|
|
|
var doc = decodeDoc(cursor.value);
|
|
var seq = cursor.key;
|
|
|
|
if (docIds && !docIds.has(doc._id)) {
|
|
return cursor.continue();
|
|
}
|
|
|
|
var metadata;
|
|
|
|
function onGetMetadata() {
|
|
if (metadata.seq !== seq) {
|
|
// some other seq is later
|
|
return cursor.continue();
|
|
}
|
|
|
|
lastSeq = seq;
|
|
|
|
if (metadata.winningRev === doc._rev) {
|
|
return onGetWinningDoc(doc);
|
|
}
|
|
|
|
fetchWinningDoc();
|
|
}
|
|
|
|
function fetchWinningDoc() {
|
|
var docIdRev = doc._id + '::' + metadata.winningRev;
|
|
var req = docIdRevIndex.get(docIdRev);
|
|
req.onsuccess = function (e) {
|
|
onGetWinningDoc(decodeDoc(e.target.result));
|
|
};
|
|
}
|
|
|
|
function onGetWinningDoc(winningDoc) {
|
|
|
|
var change = opts.processChange(winningDoc, metadata, opts);
|
|
change.seq = metadata.seq;
|
|
|
|
var filtered = filter(change);
|
|
if (typeof filtered === 'object') {
|
|
return opts.complete(filtered);
|
|
}
|
|
|
|
if (filtered) {
|
|
numResults++;
|
|
if (returnDocs) {
|
|
results.push(change);
|
|
}
|
|
// process the attachment immediately
|
|
// for the benefit of live listeners
|
|
if (opts.attachments && opts.include_docs) {
|
|
fetchAttachmentsIfNecessary(winningDoc, opts, txn, function () {
|
|
postProcessAttachments([change], opts.binary).then(function () {
|
|
opts.onChange(change);
|
|
});
|
|
});
|
|
} else {
|
|
opts.onChange(change);
|
|
}
|
|
}
|
|
if (numResults !== limit) {
|
|
cursor.continue();
|
|
}
|
|
}
|
|
|
|
metadata = docIdsToMetadata.get(doc._id);
|
|
if (metadata) { // cached
|
|
return onGetMetadata();
|
|
}
|
|
// metadata not cached, have to go fetch it
|
|
docStore.get(doc._id).onsuccess = function (event) {
|
|
metadata = decodeMetadata(event.target.result);
|
|
docIdsToMetadata.set(doc._id, metadata);
|
|
onGetMetadata();
|
|
};
|
|
}
|
|
|
|
function onsuccess(event) {
|
|
var cursor = event.target.result;
|
|
|
|
if (!cursor) {
|
|
return;
|
|
}
|
|
onGetCursor(cursor);
|
|
}
|
|
|
|
function fetchChanges() {
|
|
var objectStores = [DOC_STORE, BY_SEQ_STORE];
|
|
if (opts.attachments) {
|
|
objectStores.push(ATTACH_STORE);
|
|
}
|
|
var txnResult = openTransactionSafely(idb, objectStores, 'readonly');
|
|
if (txnResult.error) {
|
|
return opts.complete(txnResult.error);
|
|
}
|
|
txn = txnResult.txn;
|
|
txn.onabort = idbError(opts.complete);
|
|
txn.oncomplete = onTxnComplete;
|
|
|
|
bySeqStore = txn.objectStore(BY_SEQ_STORE);
|
|
docStore = txn.objectStore(DOC_STORE);
|
|
docIdRevIndex = bySeqStore.index('_doc_id_rev');
|
|
|
|
var req;
|
|
|
|
if (opts.descending) {
|
|
req = bySeqStore.openCursor(null, 'prev');
|
|
} else {
|
|
req = bySeqStore.openCursor(IDBKeyRange.lowerBound(opts.since, true));
|
|
}
|
|
|
|
req.onsuccess = onsuccess;
|
|
}
|
|
|
|
fetchChanges();
|
|
|
|
function onTxnComplete() {
|
|
|
|
function finish() {
|
|
opts.complete(null, {
|
|
results: results,
|
|
last_seq: lastSeq
|
|
});
|
|
}
|
|
|
|
if (!opts.continuous && opts.attachments) {
|
|
// cannot guarantee that postProcessing was already done,
|
|
// so do it again
|
|
postProcessAttachments(results).then(finish);
|
|
} else {
|
|
finish();
|
|
}
|
|
}
|
|
};
|
|
|
|
api._close = function (callback) {
|
|
if (idb === null) {
|
|
return callback(createError(NOT_OPEN));
|
|
}
|
|
|
|
// https://developer.mozilla.org/en-US/docs/IndexedDB/IDBDatabase#close
|
|
// "Returns immediately and closes the connection in a separate thread..."
|
|
idb.close();
|
|
cachedDBs.delete(dbName);
|
|
idb = null;
|
|
callback();
|
|
};
|
|
|
|
api._getRevisionTree = function (docId, callback) {
|
|
var txnResult = openTransactionSafely(idb, [DOC_STORE], 'readonly');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
var txn = txnResult.txn;
|
|
var req = txn.objectStore(DOC_STORE).get(docId);
|
|
req.onsuccess = function (event) {
|
|
var doc = decodeMetadata(event.target.result);
|
|
if (!doc) {
|
|
callback(createError(MISSING_DOC));
|
|
} else {
|
|
callback(null, doc.rev_tree);
|
|
}
|
|
};
|
|
};
|
|
|
|
// This function removes revisions of document docId
|
|
// which are listed in revs and sets this document
|
|
// revision to to rev_tree
|
|
api._doCompaction = function (docId, revs, callback) {
|
|
var stores = [
|
|
DOC_STORE,
|
|
BY_SEQ_STORE,
|
|
ATTACH_STORE,
|
|
ATTACH_AND_SEQ_STORE
|
|
];
|
|
var txnResult = openTransactionSafely(idb, stores, 'readwrite');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
var txn = txnResult.txn;
|
|
|
|
var docStore = txn.objectStore(DOC_STORE);
|
|
|
|
docStore.get(docId).onsuccess = function (event) {
|
|
var metadata = decodeMetadata(event.target.result);
|
|
traverseRevTree(metadata.rev_tree, function (isLeaf, pos,
|
|
revHash, ctx, opts) {
|
|
var rev = pos + '-' + revHash;
|
|
if (revs.indexOf(rev) !== -1) {
|
|
opts.status = 'missing';
|
|
}
|
|
});
|
|
compactRevs(revs, docId, txn);
|
|
var winningRev = metadata.winningRev;
|
|
var deleted = metadata.deleted;
|
|
txn.objectStore(DOC_STORE).put(
|
|
encodeMetadata(metadata, winningRev, deleted));
|
|
};
|
|
txn.onabort = idbError(callback);
|
|
txn.oncomplete = function () {
|
|
callback();
|
|
};
|
|
};
|
|
|
|
|
|
api._getLocal = function (id, callback) {
|
|
var txnResult = openTransactionSafely(idb, [LOCAL_STORE], 'readonly');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
var tx = txnResult.txn;
|
|
var req = tx.objectStore(LOCAL_STORE).get(id);
|
|
|
|
req.onerror = idbError(callback);
|
|
req.onsuccess = function (e) {
|
|
var doc = e.target.result;
|
|
if (!doc) {
|
|
callback(createError(MISSING_DOC));
|
|
} else {
|
|
delete doc['_doc_id_rev']; // for backwards compat
|
|
callback(null, doc);
|
|
}
|
|
};
|
|
};
|
|
|
|
api._putLocal = function (doc, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
delete doc._revisions; // ignore this, trust the rev
|
|
var oldRev = doc._rev;
|
|
var id = doc._id;
|
|
if (!oldRev) {
|
|
doc._rev = '0-1';
|
|
} else {
|
|
doc._rev = '0-' + (parseInt(oldRev.split('-')[1], 10) + 1);
|
|
}
|
|
|
|
var tx = opts.ctx;
|
|
var ret;
|
|
if (!tx) {
|
|
var txnResult = openTransactionSafely(idb, [LOCAL_STORE], 'readwrite');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
tx = txnResult.txn;
|
|
tx.onerror = idbError(callback);
|
|
tx.oncomplete = function () {
|
|
if (ret) {
|
|
callback(null, ret);
|
|
}
|
|
};
|
|
}
|
|
|
|
var oStore = tx.objectStore(LOCAL_STORE);
|
|
var req;
|
|
if (oldRev) {
|
|
req = oStore.get(id);
|
|
req.onsuccess = function (e) {
|
|
var oldDoc = e.target.result;
|
|
if (!oldDoc || oldDoc._rev !== oldRev) {
|
|
callback(createError(REV_CONFLICT));
|
|
} else { // update
|
|
var req = oStore.put(doc);
|
|
req.onsuccess = function () {
|
|
ret = {ok: true, id: doc._id, rev: doc._rev};
|
|
if (opts.ctx) { // return immediately
|
|
callback(null, ret);
|
|
}
|
|
};
|
|
}
|
|
};
|
|
} else { // new doc
|
|
req = oStore.add(doc);
|
|
req.onerror = function (e) {
|
|
// constraint error, already exists
|
|
callback(createError(REV_CONFLICT));
|
|
e.preventDefault(); // avoid transaction abort
|
|
e.stopPropagation(); // avoid transaction onerror
|
|
};
|
|
req.onsuccess = function () {
|
|
ret = {ok: true, id: doc._id, rev: doc._rev};
|
|
if (opts.ctx) { // return immediately
|
|
callback(null, ret);
|
|
}
|
|
};
|
|
}
|
|
};
|
|
|
|
api._removeLocal = function (doc, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
var tx = opts.ctx;
|
|
if (!tx) {
|
|
var txnResult = openTransactionSafely(idb, [LOCAL_STORE], 'readwrite');
|
|
if (txnResult.error) {
|
|
return callback(txnResult.error);
|
|
}
|
|
tx = txnResult.txn;
|
|
tx.oncomplete = function () {
|
|
if (ret) {
|
|
callback(null, ret);
|
|
}
|
|
};
|
|
}
|
|
var ret;
|
|
var id = doc._id;
|
|
var oStore = tx.objectStore(LOCAL_STORE);
|
|
var req = oStore.get(id);
|
|
|
|
req.onerror = idbError(callback);
|
|
req.onsuccess = function (e) {
|
|
var oldDoc = e.target.result;
|
|
if (!oldDoc || oldDoc._rev !== doc._rev) {
|
|
callback(createError(MISSING_DOC));
|
|
} else {
|
|
oStore.delete(id);
|
|
ret = {ok: true, id: id, rev: '0-0'};
|
|
if (opts.ctx) { // return immediately
|
|
callback(null, ret);
|
|
}
|
|
}
|
|
};
|
|
};
|
|
|
|
api._destroy = function (opts, callback) {
|
|
idbChanges.removeAllListeners(dbName);
|
|
|
|
//Close open request for "dbName" database to fix ie delay.
|
|
var openReq = openReqList.get(dbName);
|
|
if (openReq && openReq.result) {
|
|
openReq.result.close();
|
|
cachedDBs.delete(dbName);
|
|
}
|
|
var req = indexedDB.deleteDatabase(dbName);
|
|
|
|
req.onsuccess = function () {
|
|
//Remove open request from the list.
|
|
openReqList.delete(dbName);
|
|
if (hasLocalStorage() && (dbName in localStorage)) {
|
|
delete localStorage[dbName];
|
|
}
|
|
callback(null, { 'ok': true });
|
|
};
|
|
|
|
req.onerror = idbError(callback);
|
|
};
|
|
|
|
var cached = cachedDBs.get(dbName);
|
|
|
|
if (cached) {
|
|
idb = cached.idb;
|
|
api._meta = cached.global;
|
|
process.nextTick(function () {
|
|
callback(null, api);
|
|
});
|
|
return;
|
|
}
|
|
|
|
var req;
|
|
if (opts.storage) {
|
|
req = tryStorageOption(dbName, opts.storage);
|
|
} else {
|
|
req = indexedDB.open(dbName, ADAPTER_VERSION);
|
|
}
|
|
|
|
openReqList.set(dbName, req);
|
|
|
|
req.onupgradeneeded = function (e) {
|
|
var db = e.target.result;
|
|
if (e.oldVersion < 1) {
|
|
return createSchema(db); // new db, initial schema
|
|
}
|
|
// do migrations
|
|
|
|
var txn = e.currentTarget.transaction;
|
|
// these migrations have to be done in this function, before
|
|
// control is returned to the event loop, because IndexedDB
|
|
|
|
if (e.oldVersion < 3) {
|
|
createLocalStoreSchema(db); // v2 -> v3
|
|
}
|
|
if (e.oldVersion < 4) {
|
|
addAttachAndSeqStore(db); // v3 -> v4
|
|
}
|
|
|
|
var migrations = [
|
|
addDeletedOrLocalIndex, // v1 -> v2
|
|
migrateLocalStore, // v2 -> v3
|
|
migrateAttsAndSeqs, // v3 -> v4
|
|
migrateMetadata // v4 -> v5
|
|
];
|
|
|
|
var i = e.oldVersion;
|
|
|
|
function next() {
|
|
var migration = migrations[i - 1];
|
|
i++;
|
|
if (migration) {
|
|
migration(txn, next);
|
|
}
|
|
}
|
|
|
|
next();
|
|
};
|
|
|
|
req.onsuccess = function (e) {
|
|
|
|
idb = e.target.result;
|
|
|
|
idb.onversionchange = function () {
|
|
idb.close();
|
|
cachedDBs.delete(dbName);
|
|
};
|
|
|
|
idb.onabort = function (e) {
|
|
console.error('Database has a global failure', e.target.error);
|
|
idb.close();
|
|
cachedDBs.delete(dbName);
|
|
};
|
|
|
|
var txn = idb.transaction([
|
|
META_STORE,
|
|
DETECT_BLOB_SUPPORT_STORE,
|
|
DOC_STORE
|
|
], 'readwrite');
|
|
|
|
var req = txn.objectStore(META_STORE).get(META_STORE);
|
|
|
|
var blobSupport = null;
|
|
var docCount = null;
|
|
var instanceId = null;
|
|
|
|
req.onsuccess = function (e) {
|
|
|
|
var checkSetupComplete = function () {
|
|
if (blobSupport === null || docCount === null ||
|
|
instanceId === null) {
|
|
return;
|
|
} else {
|
|
api._meta = {
|
|
name: dbName,
|
|
instanceId: instanceId,
|
|
blobSupport: blobSupport,
|
|
docCount: docCount
|
|
};
|
|
|
|
cachedDBs.set(dbName, {
|
|
idb: idb,
|
|
global: api._meta
|
|
});
|
|
callback(null, api);
|
|
}
|
|
};
|
|
|
|
//
|
|
// fetch/store the id
|
|
//
|
|
|
|
var meta = e.target.result || {id: META_STORE};
|
|
if (dbName + '_id' in meta) {
|
|
instanceId = meta[dbName + '_id'];
|
|
checkSetupComplete();
|
|
} else {
|
|
instanceId = uuid();
|
|
meta[dbName + '_id'] = instanceId;
|
|
txn.objectStore(META_STORE).put(meta).onsuccess = function () {
|
|
checkSetupComplete();
|
|
};
|
|
}
|
|
|
|
//
|
|
// check blob support
|
|
//
|
|
|
|
if (!blobSupportPromise) {
|
|
// make sure blob support is only checked once
|
|
blobSupportPromise = checkBlobSupport(txn);
|
|
}
|
|
|
|
blobSupportPromise.then(function (val) {
|
|
blobSupport = val;
|
|
checkSetupComplete();
|
|
});
|
|
|
|
//
|
|
// count docs
|
|
//
|
|
|
|
var index = txn.objectStore(DOC_STORE).index('deletedOrLocal');
|
|
index.count(IDBKeyRange.only('0')).onsuccess = function (e) {
|
|
docCount = e.target.result;
|
|
checkSetupComplete();
|
|
};
|
|
|
|
};
|
|
};
|
|
|
|
req.onerror = function () {
|
|
var msg = 'Failed to open indexedDB, are you in private browsing mode?';
|
|
console.error(msg);
|
|
callback(createError(IDB_ERROR, msg));
|
|
};
|
|
}
|
|
|
|
IdbPouch.valid = function () {
|
|
// Issue #2533, we finally gave up on doing bug
|
|
// detection instead of browser sniffing. Safari brought us
|
|
// to our knees.
|
|
var isSafari = typeof openDatabase !== 'undefined' &&
|
|
/(Safari|iPhone|iPad|iPod)/.test(navigator.userAgent) &&
|
|
!/Chrome/.test(navigator.userAgent) &&
|
|
!/BlackBerry/.test(navigator.platform);
|
|
|
|
// some outdated implementations of IDB that appear on Samsung
|
|
// and HTC Android devices <4.4 are missing IDBKeyRange
|
|
return !isSafari && typeof indexedDB !== 'undefined' &&
|
|
typeof IDBKeyRange !== 'undefined';
|
|
};
|
|
|
|
function tryStorageOption(dbName, storage) {
|
|
try { // option only available in Firefox 26+
|
|
return indexedDB.open(dbName, {
|
|
version: ADAPTER_VERSION,
|
|
storage: storage
|
|
});
|
|
} catch(err) {
|
|
return indexedDB.open(dbName, ADAPTER_VERSION);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Parsing hex strings. Yeah.
|
|
//
|
|
// So basically we need this because of a bug in WebSQL:
|
|
// https://code.google.com/p/chromium/issues/detail?id=422690
|
|
// https://bugs.webkit.org/show_bug.cgi?id=137637
|
|
//
|
|
// UTF-8 and UTF-16 are provided as separate functions
|
|
// for meager performance improvements
|
|
//
|
|
|
|
function decodeUtf8(str) {
|
|
return decodeURIComponent(window.escape(str));
|
|
}
|
|
|
|
function hexToInt(charCode) {
|
|
// '0'-'9' is 48-57
|
|
// 'A'-'F' is 65-70
|
|
// SQLite will only give us uppercase hex
|
|
return charCode < 65 ? (charCode - 48) : (charCode - 55);
|
|
}
|
|
|
|
|
|
// Example:
|
|
// pragma encoding=utf8;
|
|
// select hex('A');
|
|
// returns '41'
|
|
function parseHexUtf8(str, start, end) {
|
|
var result = '';
|
|
while (start < end) {
|
|
result += String.fromCharCode(
|
|
(hexToInt(str.charCodeAt(start++)) << 4) |
|
|
hexToInt(str.charCodeAt(start++)));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// Example:
|
|
// pragma encoding=utf16;
|
|
// select hex('A');
|
|
// returns '4100'
|
|
// notice that the 00 comes after the 41 (i.e. it's swizzled)
|
|
function parseHexUtf16(str, start, end) {
|
|
var result = '';
|
|
while (start < end) {
|
|
// UTF-16, so swizzle the bytes
|
|
result += String.fromCharCode(
|
|
(hexToInt(str.charCodeAt(start + 2)) << 12) |
|
|
(hexToInt(str.charCodeAt(start + 3)) << 8) |
|
|
(hexToInt(str.charCodeAt(start)) << 4) |
|
|
hexToInt(str.charCodeAt(start + 1)));
|
|
start += 4;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
function parseHexString(str, encoding) {
|
|
if (encoding === 'UTF-8') {
|
|
return decodeUtf8(parseHexUtf8(str, 0, str.length));
|
|
} else {
|
|
return parseHexUtf16(str, 0, str.length);
|
|
}
|
|
}
|
|
|
|
function quote(str) {
|
|
return "'" + str + "'";
|
|
}
|
|
|
|
var ADAPTER_VERSION$1 = 7; // used to manage migrations
|
|
|
|
// The object stores created for each database
|
|
// DOC_STORE stores the document meta data, its revision history and state
|
|
var DOC_STORE$1 = quote('document-store');
|
|
// BY_SEQ_STORE stores a particular version of a document, keyed by its
|
|
// sequence id
|
|
var BY_SEQ_STORE$1 = quote('by-sequence');
|
|
// Where we store attachments
|
|
var ATTACH_STORE$1 = quote('attach-store');
|
|
var LOCAL_STORE$1 = quote('local-store');
|
|
var META_STORE$1 = quote('metadata-store');
|
|
// where we store many-to-many relations between attachment
|
|
// digests and seqs
|
|
var ATTACH_AND_SEQ_STORE$1 = quote('attach-seq-store');
|
|
|
|
function createOpenDBFunction() {
|
|
if (typeof sqlitePlugin !== 'undefined') {
|
|
// The SQLite Plugin started deviating pretty heavily from the
|
|
// standard openDatabase() function, as they started adding more features.
|
|
// It's better to just use their "new" format and pass in a big ol'
|
|
// options object.
|
|
return sqlitePlugin.openDatabase.bind(sqlitePlugin);
|
|
}
|
|
|
|
if (typeof openDatabase !== 'undefined') {
|
|
return function openDB(opts) {
|
|
// Traditional WebSQL API
|
|
return openDatabase(opts.name, opts.version, opts.description, opts.size);
|
|
};
|
|
}
|
|
}
|
|
|
|
function valid() {
|
|
// SQLitePlugin leaks this global object, which we can use
|
|
// to detect if it's installed or not. The benefit is that it's
|
|
// declared immediately, before the 'deviceready' event has fired.
|
|
return typeof openDatabase !== 'undefined' ||
|
|
typeof SQLitePlugin !== 'undefined';
|
|
}
|
|
|
|
// escapeBlob and unescapeBlob are workarounds for a websql bug:
|
|
// https://code.google.com/p/chromium/issues/detail?id=422690
|
|
// https://bugs.webkit.org/show_bug.cgi?id=137637
|
|
// The goal is to never actually insert the \u0000 character
|
|
// in the database.
|
|
function escapeBlob(str) {
|
|
return str
|
|
.replace(/\u0002/g, '\u0002\u0002')
|
|
.replace(/\u0001/g, '\u0001\u0002')
|
|
.replace(/\u0000/g, '\u0001\u0001');
|
|
}
|
|
|
|
function unescapeBlob(str) {
|
|
return str
|
|
.replace(/\u0001\u0001/g, '\u0000')
|
|
.replace(/\u0001\u0002/g, '\u0001')
|
|
.replace(/\u0002\u0002/g, '\u0002');
|
|
}
|
|
|
|
function stringifyDoc(doc) {
|
|
// don't bother storing the id/rev. it uses lots of space,
|
|
// in persistent map/reduce especially
|
|
delete doc._id;
|
|
delete doc._rev;
|
|
return JSON.stringify(doc);
|
|
}
|
|
|
|
function unstringifyDoc(doc, id, rev) {
|
|
doc = JSON.parse(doc);
|
|
doc._id = id;
|
|
doc._rev = rev;
|
|
return doc;
|
|
}
|
|
|
|
// question mark groups IN queries, e.g. 3 -> '(?,?,?)'
|
|
function qMarks(num) {
|
|
var s = '(';
|
|
while (num--) {
|
|
s += '?';
|
|
if (num) {
|
|
s += ',';
|
|
}
|
|
}
|
|
return s + ')';
|
|
}
|
|
|
|
function select(selector, table, joiner, where, orderBy) {
|
|
return 'SELECT ' + selector + ' FROM ' +
|
|
(typeof table === 'string' ? table : table.join(' JOIN ')) +
|
|
(joiner ? (' ON ' + joiner) : '') +
|
|
(where ? (' WHERE ' +
|
|
(typeof where === 'string' ? where : where.join(' AND '))) : '') +
|
|
(orderBy ? (' ORDER BY ' + orderBy) : '');
|
|
}
|
|
|
|
function compactRevs$1(revs, docId, tx) {
|
|
|
|
if (!revs.length) {
|
|
return;
|
|
}
|
|
|
|
var numDone = 0;
|
|
var seqs = [];
|
|
|
|
function checkDone() {
|
|
if (++numDone === revs.length) { // done
|
|
deleteOrphans();
|
|
}
|
|
}
|
|
|
|
function deleteOrphans() {
|
|
// find orphaned attachment digests
|
|
|
|
if (!seqs.length) {
|
|
return;
|
|
}
|
|
|
|
var sql = 'SELECT DISTINCT digest AS digest FROM ' +
|
|
ATTACH_AND_SEQ_STORE$1 + ' WHERE seq IN ' + qMarks(seqs.length);
|
|
|
|
tx.executeSql(sql, seqs, function (tx, res) {
|
|
|
|
var digestsToCheck = [];
|
|
for (var i = 0; i < res.rows.length; i++) {
|
|
digestsToCheck.push(res.rows.item(i).digest);
|
|
}
|
|
if (!digestsToCheck.length) {
|
|
return;
|
|
}
|
|
|
|
var sql = 'DELETE FROM ' + ATTACH_AND_SEQ_STORE$1 +
|
|
' WHERE seq IN (' +
|
|
seqs.map(function () { return '?'; }).join(',') +
|
|
')';
|
|
tx.executeSql(sql, seqs, function (tx) {
|
|
|
|
var sql = 'SELECT digest FROM ' + ATTACH_AND_SEQ_STORE$1 +
|
|
' WHERE digest IN (' +
|
|
digestsToCheck.map(function () { return '?'; }).join(',') +
|
|
')';
|
|
tx.executeSql(sql, digestsToCheck, function (tx, res) {
|
|
var nonOrphanedDigests = new pouchdbCollections.Set();
|
|
for (var i = 0; i < res.rows.length; i++) {
|
|
nonOrphanedDigests.add(res.rows.item(i).digest);
|
|
}
|
|
digestsToCheck.forEach(function (digest) {
|
|
if (nonOrphanedDigests.has(digest)) {
|
|
return;
|
|
}
|
|
tx.executeSql(
|
|
'DELETE FROM ' + ATTACH_AND_SEQ_STORE$1 + ' WHERE digest=?',
|
|
[digest]);
|
|
tx.executeSql(
|
|
'DELETE FROM ' + ATTACH_STORE$1 + ' WHERE digest=?', [digest]);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
// update by-seq and attach stores in parallel
|
|
revs.forEach(function (rev) {
|
|
var sql = 'SELECT seq FROM ' + BY_SEQ_STORE$1 +
|
|
' WHERE doc_id=? AND rev=?';
|
|
|
|
tx.executeSql(sql, [docId, rev], function (tx, res) {
|
|
if (!res.rows.length) { // already deleted
|
|
return checkDone();
|
|
}
|
|
var seq = res.rows.item(0).seq;
|
|
seqs.push(seq);
|
|
|
|
tx.executeSql(
|
|
'DELETE FROM ' + BY_SEQ_STORE$1 + ' WHERE seq=?', [seq], checkDone);
|
|
});
|
|
});
|
|
}
|
|
|
|
function websqlError(callback) {
|
|
return function (event) {
|
|
console.error('WebSQL threw an error', event);
|
|
// event may actually be a SQLError object, so report is as such
|
|
var errorNameMatch = event && event.constructor.toString()
|
|
.match(/function ([^\(]+)/);
|
|
var errorName = (errorNameMatch && errorNameMatch[1]) || event.type;
|
|
var errorReason = event.target || event.message;
|
|
callback(createError(WSQ_ERROR, errorReason, errorName));
|
|
};
|
|
}
|
|
|
|
function getSize(opts) {
|
|
if ('size' in opts) {
|
|
// triggers immediate popup in iOS, fixes #2347
|
|
// e.g. 5000001 asks for 5 MB, 10000001 asks for 10 MB,
|
|
return opts.size * 1000000;
|
|
}
|
|
// In iOS, doesn't matter as long as it's <= 5000000.
|
|
// Except that if you request too much, our tests fail
|
|
// because of the native "do you accept?" popup.
|
|
// In Android <=4.3, this value is actually used as an
|
|
// honest-to-god ceiling for data, so we need to
|
|
// set it to a decently high number.
|
|
var isAndroid = typeof navigator !== 'undefined' &&
|
|
/Android/.test(navigator.userAgent);
|
|
return isAndroid ? 5000000 : 1; // in PhantomJS, if you use 0 it will crash
|
|
}
|
|
|
|
function openDBSafely(openDBFunction, opts) {
|
|
try {
|
|
return {
|
|
db: openDBFunction(opts)
|
|
};
|
|
} catch (err) {
|
|
return {
|
|
error: err
|
|
};
|
|
}
|
|
}
|
|
|
|
var cachedDatabases = new pouchdbCollections.Map();
|
|
|
|
function openDB(opts) {
|
|
var cachedResult = cachedDatabases.get(opts.name);
|
|
if (!cachedResult) {
|
|
var openDBFun = createOpenDBFunction();
|
|
cachedResult = openDBSafely(openDBFun, opts);
|
|
cachedDatabases.set(opts.name, cachedResult);
|
|
if (cachedResult.db) {
|
|
cachedResult.db._sqlitePlugin = typeof sqlitePlugin !== 'undefined';
|
|
}
|
|
}
|
|
return cachedResult;
|
|
}
|
|
|
|
function websqlBulkDocs(dbOpts, req, opts, api, db, websqlChanges, callback) {
|
|
var newEdits = opts.new_edits;
|
|
var userDocs = req.docs;
|
|
|
|
// Parse the docs, give them a sequence number for the result
|
|
var docInfos = userDocs.map(function (doc) {
|
|
if (doc._id && isLocalId(doc._id)) {
|
|
return doc;
|
|
}
|
|
var newDoc = parseDoc(doc, newEdits);
|
|
return newDoc;
|
|
});
|
|
|
|
var docInfoErrors = docInfos.filter(function (docInfo) {
|
|
return docInfo.error;
|
|
});
|
|
if (docInfoErrors.length) {
|
|
return callback(docInfoErrors[0]);
|
|
}
|
|
|
|
var tx;
|
|
var results = new Array(docInfos.length);
|
|
var fetchedDocs = new pouchdbCollections.Map();
|
|
|
|
var preconditionErrored;
|
|
function complete() {
|
|
if (preconditionErrored) {
|
|
return callback(preconditionErrored);
|
|
}
|
|
websqlChanges.notify(api._name);
|
|
api._docCount = -1; // invalidate
|
|
callback(null, results);
|
|
}
|
|
|
|
function verifyAttachment(digest, callback) {
|
|
var sql = 'SELECT count(*) as cnt FROM ' + ATTACH_STORE$1 +
|
|
' WHERE digest=?';
|
|
tx.executeSql(sql, [digest], function (tx, result) {
|
|
if (result.rows.item(0).cnt === 0) {
|
|
var err = createError(MISSING_STUB,
|
|
'unknown stub attachment with digest ' +
|
|
digest);
|
|
callback(err);
|
|
} else {
|
|
callback();
|
|
}
|
|
});
|
|
}
|
|
|
|
function verifyAttachments(finish) {
|
|
var digests = [];
|
|
docInfos.forEach(function (docInfo) {
|
|
if (docInfo.data && docInfo.data._attachments) {
|
|
Object.keys(docInfo.data._attachments).forEach(function (filename) {
|
|
var att = docInfo.data._attachments[filename];
|
|
if (att.stub) {
|
|
digests.push(att.digest);
|
|
}
|
|
});
|
|
}
|
|
});
|
|
if (!digests.length) {
|
|
return finish();
|
|
}
|
|
var numDone = 0;
|
|
var err;
|
|
|
|
function checkDone() {
|
|
if (++numDone === digests.length) {
|
|
finish(err);
|
|
}
|
|
}
|
|
digests.forEach(function (digest) {
|
|
verifyAttachment(digest, function (attErr) {
|
|
if (attErr && !err) {
|
|
err = attErr;
|
|
}
|
|
checkDone();
|
|
});
|
|
});
|
|
}
|
|
|
|
function writeDoc(docInfo, winningRev, winningRevIsDeleted, newRevIsDeleted,
|
|
isUpdate, delta, resultsIdx, callback) {
|
|
|
|
function finish() {
|
|
var data = docInfo.data;
|
|
var deletedInt = newRevIsDeleted ? 1 : 0;
|
|
|
|
var id = data._id;
|
|
var rev = data._rev;
|
|
var json = stringifyDoc(data);
|
|
var sql = 'INSERT INTO ' + BY_SEQ_STORE$1 +
|
|
' (doc_id, rev, json, deleted) VALUES (?, ?, ?, ?);';
|
|
var sqlArgs = [id, rev, json, deletedInt];
|
|
|
|
// map seqs to attachment digests, which
|
|
// we will need later during compaction
|
|
function insertAttachmentMappings(seq, callback) {
|
|
var attsAdded = 0;
|
|
var attsToAdd = Object.keys(data._attachments || {});
|
|
|
|
if (!attsToAdd.length) {
|
|
return callback();
|
|
}
|
|
function checkDone() {
|
|
if (++attsAdded === attsToAdd.length) {
|
|
callback();
|
|
}
|
|
return false; // ack handling a constraint error
|
|
}
|
|
function add(att) {
|
|
var sql = 'INSERT INTO ' + ATTACH_AND_SEQ_STORE$1 +
|
|
' (digest, seq) VALUES (?,?)';
|
|
var sqlArgs = [data._attachments[att].digest, seq];
|
|
tx.executeSql(sql, sqlArgs, checkDone, checkDone);
|
|
// second callback is for a constaint error, which we ignore
|
|
// because this docid/rev has already been associated with
|
|
// the digest (e.g. when new_edits == false)
|
|
}
|
|
for (var i = 0; i < attsToAdd.length; i++) {
|
|
add(attsToAdd[i]); // do in parallel
|
|
}
|
|
}
|
|
|
|
tx.executeSql(sql, sqlArgs, function (tx, result) {
|
|
var seq = result.insertId;
|
|
insertAttachmentMappings(seq, function () {
|
|
dataWritten(tx, seq);
|
|
});
|
|
}, function () {
|
|
// constraint error, recover by updating instead (see #1638)
|
|
var fetchSql = select('seq', BY_SEQ_STORE$1, null,
|
|
'doc_id=? AND rev=?');
|
|
tx.executeSql(fetchSql, [id, rev], function (tx, res) {
|
|
var seq = res.rows.item(0).seq;
|
|
var sql = 'UPDATE ' + BY_SEQ_STORE$1 +
|
|
' SET json=?, deleted=? WHERE doc_id=? AND rev=?;';
|
|
var sqlArgs = [json, deletedInt, id, rev];
|
|
tx.executeSql(sql, sqlArgs, function (tx) {
|
|
insertAttachmentMappings(seq, function () {
|
|
dataWritten(tx, seq);
|
|
});
|
|
});
|
|
});
|
|
return false; // ack that we've handled the error
|
|
});
|
|
}
|
|
|
|
function collectResults(attachmentErr) {
|
|
if (!err) {
|
|
if (attachmentErr) {
|
|
err = attachmentErr;
|
|
callback(err);
|
|
} else if (recv === attachments.length) {
|
|
finish();
|
|
}
|
|
}
|
|
}
|
|
|
|
var err = null;
|
|
var recv = 0;
|
|
|
|
docInfo.data._id = docInfo.metadata.id;
|
|
docInfo.data._rev = docInfo.metadata.rev;
|
|
var attachments = Object.keys(docInfo.data._attachments || {});
|
|
|
|
|
|
if (newRevIsDeleted) {
|
|
docInfo.data._deleted = true;
|
|
}
|
|
|
|
function attachmentSaved(err) {
|
|
recv++;
|
|
collectResults(err);
|
|
}
|
|
|
|
attachments.forEach(function (key) {
|
|
var att = docInfo.data._attachments[key];
|
|
if (!att.stub) {
|
|
var data = att.data;
|
|
delete att.data;
|
|
att.revpos = parseInt(winningRev, 10);
|
|
var digest = att.digest;
|
|
saveAttachment(digest, data, attachmentSaved);
|
|
} else {
|
|
recv++;
|
|
collectResults();
|
|
}
|
|
});
|
|
|
|
if (!attachments.length) {
|
|
finish();
|
|
}
|
|
|
|
function dataWritten(tx, seq) {
|
|
var id = docInfo.metadata.id;
|
|
if (isUpdate && api.auto_compaction) {
|
|
compactRevs$1(compactTree(docInfo.metadata), id, tx);
|
|
} else if (docInfo.stemmedRevs.length) {
|
|
compactRevs$1(docInfo.stemmedRevs, id, tx);
|
|
}
|
|
|
|
docInfo.metadata.seq = seq;
|
|
delete docInfo.metadata.rev;
|
|
|
|
var sql = isUpdate ?
|
|
'UPDATE ' + DOC_STORE$1 +
|
|
' SET json=?, max_seq=?, winningseq=' +
|
|
'(SELECT seq FROM ' + BY_SEQ_STORE$1 +
|
|
' WHERE doc_id=' + DOC_STORE$1 + '.id AND rev=?) WHERE id=?'
|
|
: 'INSERT INTO ' + DOC_STORE$1 +
|
|
' (id, winningseq, max_seq, json) VALUES (?,?,?,?);';
|
|
var metadataStr = safeJsonStringify(docInfo.metadata);
|
|
var params = isUpdate ?
|
|
[metadataStr, seq, winningRev, id] :
|
|
[id, seq, seq, metadataStr];
|
|
tx.executeSql(sql, params, function () {
|
|
results[resultsIdx] = {
|
|
ok: true,
|
|
id: docInfo.metadata.id,
|
|
rev: winningRev
|
|
};
|
|
fetchedDocs.set(id, docInfo.metadata);
|
|
callback();
|
|
});
|
|
}
|
|
}
|
|
|
|
function websqlProcessDocs() {
|
|
processDocs(dbOpts.revs_limit, docInfos, api, fetchedDocs, tx,
|
|
results, writeDoc, opts);
|
|
}
|
|
|
|
function fetchExistingDocs(callback) {
|
|
if (!docInfos.length) {
|
|
return callback();
|
|
}
|
|
|
|
var numFetched = 0;
|
|
|
|
function checkDone() {
|
|
if (++numFetched === docInfos.length) {
|
|
callback();
|
|
}
|
|
}
|
|
|
|
docInfos.forEach(function (docInfo) {
|
|
if (docInfo._id && isLocalId(docInfo._id)) {
|
|
return checkDone(); // skip local docs
|
|
}
|
|
var id = docInfo.metadata.id;
|
|
tx.executeSql('SELECT json FROM ' + DOC_STORE$1 +
|
|
' WHERE id = ?', [id], function (tx, result) {
|
|
if (result.rows.length) {
|
|
var metadata = safeJsonParse(result.rows.item(0).json);
|
|
fetchedDocs.set(id, metadata);
|
|
}
|
|
checkDone();
|
|
});
|
|
});
|
|
}
|
|
|
|
function saveAttachment(digest, data, callback) {
|
|
var sql = 'SELECT digest FROM ' + ATTACH_STORE$1 + ' WHERE digest=?';
|
|
tx.executeSql(sql, [digest], function (tx, result) {
|
|
if (result.rows.length) { // attachment already exists
|
|
return callback();
|
|
}
|
|
// we could just insert before selecting and catch the error,
|
|
// but my hunch is that it's cheaper not to serialize the blob
|
|
// from JS to C if we don't have to (TODO: confirm this)
|
|
sql = 'INSERT INTO ' + ATTACH_STORE$1 +
|
|
' (digest, body, escaped) VALUES (?,?,1)';
|
|
tx.executeSql(sql, [digest, escapeBlob(data)], function () {
|
|
callback();
|
|
}, function () {
|
|
// ignore constaint errors, means it already exists
|
|
callback();
|
|
return false; // ack we handled the error
|
|
});
|
|
});
|
|
}
|
|
|
|
preprocessAttachments$1(docInfos, 'binary', function (err) {
|
|
if (err) {
|
|
return callback(err);
|
|
}
|
|
db.transaction(function (txn) {
|
|
tx = txn;
|
|
verifyAttachments(function (err) {
|
|
if (err) {
|
|
preconditionErrored = err;
|
|
} else {
|
|
fetchExistingDocs(websqlProcessDocs);
|
|
}
|
|
});
|
|
}, websqlError(callback), complete);
|
|
});
|
|
}
|
|
|
|
var websqlChanges = new Changes$1();
|
|
|
|
function fetchAttachmentsIfNecessary$1(doc, opts, api, txn, cb) {
|
|
var attachments = Object.keys(doc._attachments || {});
|
|
if (!attachments.length) {
|
|
return cb && cb();
|
|
}
|
|
var numDone = 0;
|
|
|
|
function checkDone() {
|
|
if (++numDone === attachments.length && cb) {
|
|
cb();
|
|
}
|
|
}
|
|
|
|
function fetchAttachment(doc, att) {
|
|
var attObj = doc._attachments[att];
|
|
var attOpts = {binary: opts.binary, ctx: txn};
|
|
api._getAttachment(attObj, attOpts, function (_, data) {
|
|
doc._attachments[att] = jsExtend.extend(
|
|
pick(attObj, ['digest', 'content_type']),
|
|
{ data: data }
|
|
);
|
|
checkDone();
|
|
});
|
|
}
|
|
|
|
attachments.forEach(function (att) {
|
|
if (opts.attachments && opts.include_docs) {
|
|
fetchAttachment(doc, att);
|
|
} else {
|
|
doc._attachments[att].stub = true;
|
|
checkDone();
|
|
}
|
|
});
|
|
}
|
|
|
|
var POUCH_VERSION = 1;
|
|
|
|
// these indexes cover the ground for most allDocs queries
|
|
var BY_SEQ_STORE_DELETED_INDEX_SQL =
|
|
'CREATE INDEX IF NOT EXISTS \'by-seq-deleted-idx\' ON ' +
|
|
BY_SEQ_STORE$1 + ' (seq, deleted)';
|
|
var BY_SEQ_STORE_DOC_ID_REV_INDEX_SQL =
|
|
'CREATE UNIQUE INDEX IF NOT EXISTS \'by-seq-doc-id-rev\' ON ' +
|
|
BY_SEQ_STORE$1 + ' (doc_id, rev)';
|
|
var DOC_STORE_WINNINGSEQ_INDEX_SQL =
|
|
'CREATE INDEX IF NOT EXISTS \'doc-winningseq-idx\' ON ' +
|
|
DOC_STORE$1 + ' (winningseq)';
|
|
var ATTACH_AND_SEQ_STORE_SEQ_INDEX_SQL =
|
|
'CREATE INDEX IF NOT EXISTS \'attach-seq-seq-idx\' ON ' +
|
|
ATTACH_AND_SEQ_STORE$1 + ' (seq)';
|
|
var ATTACH_AND_SEQ_STORE_ATTACH_INDEX_SQL =
|
|
'CREATE UNIQUE INDEX IF NOT EXISTS \'attach-seq-digest-idx\' ON ' +
|
|
ATTACH_AND_SEQ_STORE$1 + ' (digest, seq)';
|
|
|
|
var DOC_STORE_AND_BY_SEQ_JOINER = BY_SEQ_STORE$1 +
|
|
'.seq = ' + DOC_STORE$1 + '.winningseq';
|
|
|
|
var SELECT_DOCS = BY_SEQ_STORE$1 + '.seq AS seq, ' +
|
|
BY_SEQ_STORE$1 + '.deleted AS deleted, ' +
|
|
BY_SEQ_STORE$1 + '.json AS data, ' +
|
|
BY_SEQ_STORE$1 + '.rev AS rev, ' +
|
|
DOC_STORE$1 + '.json AS metadata';
|
|
|
|
function WebSqlPouch(opts, callback) {
|
|
var api = this;
|
|
var instanceId = null;
|
|
var size = getSize(opts);
|
|
var idRequests = [];
|
|
var encoding;
|
|
|
|
api._docCount = -1; // cache sqlite count(*) for performance
|
|
api._name = opts.name;
|
|
|
|
// extend the options here, because sqlite plugin has a ton of options
|
|
// and they are constantly changing, so it's more prudent to allow anything
|
|
var websqlOpts = jsExtend.extend({}, opts, {size: size, version: POUCH_VERSION});
|
|
var openDBResult = openDB(websqlOpts);
|
|
if (openDBResult.error) {
|
|
return websqlError(callback)(openDBResult.error);
|
|
}
|
|
var db = openDBResult.db;
|
|
if (typeof db.readTransaction !== 'function') {
|
|
// doesn't exist in sqlite plugin
|
|
db.readTransaction = db.transaction;
|
|
}
|
|
|
|
function dbCreated() {
|
|
// note the db name in case the browser upgrades to idb
|
|
if (hasLocalStorage()) {
|
|
window.localStorage['_pouch__websqldb_' + api._name] = true;
|
|
}
|
|
callback(null, api);
|
|
}
|
|
|
|
// In this migration, we added the 'deleted' and 'local' columns to the
|
|
// by-seq and doc store tables.
|
|
// To preserve existing user data, we re-process all the existing JSON
|
|
// and add these values.
|
|
// Called migration2 because it corresponds to adapter version (db_version) #2
|
|
function runMigration2(tx, callback) {
|
|
// index used for the join in the allDocs query
|
|
tx.executeSql(DOC_STORE_WINNINGSEQ_INDEX_SQL);
|
|
|
|
tx.executeSql('ALTER TABLE ' + BY_SEQ_STORE$1 +
|
|
' ADD COLUMN deleted TINYINT(1) DEFAULT 0', [], function () {
|
|
tx.executeSql(BY_SEQ_STORE_DELETED_INDEX_SQL);
|
|
tx.executeSql('ALTER TABLE ' + DOC_STORE$1 +
|
|
' ADD COLUMN local TINYINT(1) DEFAULT 0', [], function () {
|
|
tx.executeSql('CREATE INDEX IF NOT EXISTS \'doc-store-local-idx\' ON ' +
|
|
DOC_STORE$1 + ' (local, id)');
|
|
|
|
var sql = 'SELECT ' + DOC_STORE$1 + '.winningseq AS seq, ' + DOC_STORE$1 +
|
|
'.json AS metadata FROM ' + BY_SEQ_STORE$1 + ' JOIN ' + DOC_STORE$1 +
|
|
' ON ' + BY_SEQ_STORE$1 + '.seq = ' + DOC_STORE$1 + '.winningseq';
|
|
|
|
tx.executeSql(sql, [], function (tx, result) {
|
|
|
|
var deleted = [];
|
|
var local = [];
|
|
|
|
for (var i = 0; i < result.rows.length; i++) {
|
|
var item = result.rows.item(i);
|
|
var seq = item.seq;
|
|
var metadata = JSON.parse(item.metadata);
|
|
if (isDeleted(metadata)) {
|
|
deleted.push(seq);
|
|
}
|
|
if (isLocalId(metadata.id)) {
|
|
local.push(metadata.id);
|
|
}
|
|
}
|
|
tx.executeSql('UPDATE ' + DOC_STORE$1 + 'SET local = 1 WHERE id IN ' +
|
|
qMarks(local.length), local, function () {
|
|
tx.executeSql('UPDATE ' + BY_SEQ_STORE$1 +
|
|
' SET deleted = 1 WHERE seq IN ' +
|
|
qMarks(deleted.length), deleted, callback);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
// in this migration, we make all the local docs unversioned
|
|
function runMigration3(tx, callback) {
|
|
var local = 'CREATE TABLE IF NOT EXISTS ' + LOCAL_STORE$1 +
|
|
' (id UNIQUE, rev, json)';
|
|
tx.executeSql(local, [], function () {
|
|
var sql = 'SELECT ' + DOC_STORE$1 + '.id AS id, ' +
|
|
BY_SEQ_STORE$1 + '.json AS data ' +
|
|
'FROM ' + BY_SEQ_STORE$1 + ' JOIN ' +
|
|
DOC_STORE$1 + ' ON ' + BY_SEQ_STORE$1 + '.seq = ' +
|
|
DOC_STORE$1 + '.winningseq WHERE local = 1';
|
|
tx.executeSql(sql, [], function (tx, res) {
|
|
var rows = [];
|
|
for (var i = 0; i < res.rows.length; i++) {
|
|
rows.push(res.rows.item(i));
|
|
}
|
|
function doNext() {
|
|
if (!rows.length) {
|
|
return callback(tx);
|
|
}
|
|
var row = rows.shift();
|
|
var rev = JSON.parse(row.data)._rev;
|
|
tx.executeSql('INSERT INTO ' + LOCAL_STORE$1 +
|
|
' (id, rev, json) VALUES (?,?,?)',
|
|
[row.id, rev, row.data], function (tx) {
|
|
tx.executeSql('DELETE FROM ' + DOC_STORE$1 + ' WHERE id=?',
|
|
[row.id], function (tx) {
|
|
tx.executeSql('DELETE FROM ' + BY_SEQ_STORE$1 + ' WHERE seq=?',
|
|
[row.seq], function () {
|
|
doNext();
|
|
});
|
|
});
|
|
});
|
|
}
|
|
doNext();
|
|
});
|
|
});
|
|
}
|
|
|
|
// in this migration, we remove doc_id_rev and just use rev
|
|
function runMigration4(tx, callback) {
|
|
|
|
function updateRows(rows) {
|
|
function doNext() {
|
|
if (!rows.length) {
|
|
return callback(tx);
|
|
}
|
|
var row = rows.shift();
|
|
var doc_id_rev = parseHexString(row.hex, encoding);
|
|
var idx = doc_id_rev.lastIndexOf('::');
|
|
var doc_id = doc_id_rev.substring(0, idx);
|
|
var rev = doc_id_rev.substring(idx + 2);
|
|
var sql = 'UPDATE ' + BY_SEQ_STORE$1 +
|
|
' SET doc_id=?, rev=? WHERE doc_id_rev=?';
|
|
tx.executeSql(sql, [doc_id, rev, doc_id_rev], function () {
|
|
doNext();
|
|
});
|
|
}
|
|
doNext();
|
|
}
|
|
|
|
var sql = 'ALTER TABLE ' + BY_SEQ_STORE$1 + ' ADD COLUMN doc_id';
|
|
tx.executeSql(sql, [], function (tx) {
|
|
var sql = 'ALTER TABLE ' + BY_SEQ_STORE$1 + ' ADD COLUMN rev';
|
|
tx.executeSql(sql, [], function (tx) {
|
|
tx.executeSql(BY_SEQ_STORE_DOC_ID_REV_INDEX_SQL, [], function (tx) {
|
|
var sql = 'SELECT hex(doc_id_rev) as hex FROM ' + BY_SEQ_STORE$1;
|
|
tx.executeSql(sql, [], function (tx, res) {
|
|
var rows = [];
|
|
for (var i = 0; i < res.rows.length; i++) {
|
|
rows.push(res.rows.item(i));
|
|
}
|
|
updateRows(rows);
|
|
});
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
// in this migration, we add the attach_and_seq table
|
|
// for issue #2818
|
|
function runMigration5(tx, callback) {
|
|
|
|
function migrateAttsAndSeqs(tx) {
|
|
// need to actually populate the table. this is the expensive part,
|
|
// so as an optimization, check first that this database even
|
|
// contains attachments
|
|
var sql = 'SELECT COUNT(*) AS cnt FROM ' + ATTACH_STORE$1;
|
|
tx.executeSql(sql, [], function (tx, res) {
|
|
var count = res.rows.item(0).cnt;
|
|
if (!count) {
|
|
return callback(tx);
|
|
}
|
|
|
|
var offset = 0;
|
|
var pageSize = 10;
|
|
function nextPage() {
|
|
var sql = select(
|
|
SELECT_DOCS + ', ' + DOC_STORE$1 + '.id AS id',
|
|
[DOC_STORE$1, BY_SEQ_STORE$1],
|
|
DOC_STORE_AND_BY_SEQ_JOINER,
|
|
null,
|
|
DOC_STORE$1 + '.id '
|
|
);
|
|
sql += ' LIMIT ' + pageSize + ' OFFSET ' + offset;
|
|
offset += pageSize;
|
|
tx.executeSql(sql, [], function (tx, res) {
|
|
if (!res.rows.length) {
|
|
return callback(tx);
|
|
}
|
|
var digestSeqs = {};
|
|
function addDigestSeq(digest, seq) {
|
|
// uniq digest/seq pairs, just in case there are dups
|
|
var seqs = digestSeqs[digest] = (digestSeqs[digest] || []);
|
|
if (seqs.indexOf(seq) === -1) {
|
|
seqs.push(seq);
|
|
}
|
|
}
|
|
for (var i = 0; i < res.rows.length; i++) {
|
|
var row = res.rows.item(i);
|
|
var doc = unstringifyDoc(row.data, row.id, row.rev);
|
|
var atts = Object.keys(doc._attachments || {});
|
|
for (var j = 0; j < atts.length; j++) {
|
|
var att = doc._attachments[atts[j]];
|
|
addDigestSeq(att.digest, row.seq);
|
|
}
|
|
}
|
|
var digestSeqPairs = [];
|
|
Object.keys(digestSeqs).forEach(function (digest) {
|
|
var seqs = digestSeqs[digest];
|
|
seqs.forEach(function (seq) {
|
|
digestSeqPairs.push([digest, seq]);
|
|
});
|
|
});
|
|
if (!digestSeqPairs.length) {
|
|
return nextPage();
|
|
}
|
|
var numDone = 0;
|
|
digestSeqPairs.forEach(function (pair) {
|
|
var sql = 'INSERT INTO ' + ATTACH_AND_SEQ_STORE$1 +
|
|
' (digest, seq) VALUES (?,?)';
|
|
tx.executeSql(sql, pair, function () {
|
|
if (++numDone === digestSeqPairs.length) {
|
|
nextPage();
|
|
}
|
|
});
|
|
});
|
|
});
|
|
}
|
|
nextPage();
|
|
});
|
|
}
|
|
|
|
var attachAndRev = 'CREATE TABLE IF NOT EXISTS ' +
|
|
ATTACH_AND_SEQ_STORE$1 + ' (digest, seq INTEGER)';
|
|
tx.executeSql(attachAndRev, [], function (tx) {
|
|
tx.executeSql(
|
|
ATTACH_AND_SEQ_STORE_ATTACH_INDEX_SQL, [], function (tx) {
|
|
tx.executeSql(
|
|
ATTACH_AND_SEQ_STORE_SEQ_INDEX_SQL, [],
|
|
migrateAttsAndSeqs);
|
|
});
|
|
});
|
|
}
|
|
|
|
// in this migration, we use escapeBlob() and unescapeBlob()
|
|
// instead of reading out the binary as HEX, which is slow
|
|
function runMigration6(tx, callback) {
|
|
var sql = 'ALTER TABLE ' + ATTACH_STORE$1 +
|
|
' ADD COLUMN escaped TINYINT(1) DEFAULT 0';
|
|
tx.executeSql(sql, [], callback);
|
|
}
|
|
|
|
// issue #3136, in this migration we need a "latest seq" as well
|
|
// as the "winning seq" in the doc store
|
|
function runMigration7(tx, callback) {
|
|
var sql = 'ALTER TABLE ' + DOC_STORE$1 +
|
|
' ADD COLUMN max_seq INTEGER';
|
|
tx.executeSql(sql, [], function (tx) {
|
|
var sql = 'UPDATE ' + DOC_STORE$1 + ' SET max_seq=(SELECT MAX(seq) FROM ' +
|
|
BY_SEQ_STORE$1 + ' WHERE doc_id=id)';
|
|
tx.executeSql(sql, [], function (tx) {
|
|
// add unique index after filling, else we'll get a constraint
|
|
// error when we do the ALTER TABLE
|
|
var sql =
|
|
'CREATE UNIQUE INDEX IF NOT EXISTS \'doc-max-seq-idx\' ON ' +
|
|
DOC_STORE$1 + ' (max_seq)';
|
|
tx.executeSql(sql, [], callback);
|
|
});
|
|
});
|
|
}
|
|
|
|
function checkEncoding(tx, cb) {
|
|
// UTF-8 on chrome/android, UTF-16 on safari < 7.1
|
|
tx.executeSql('SELECT HEX("a") AS hex', [], function (tx, res) {
|
|
var hex = res.rows.item(0).hex;
|
|
encoding = hex.length === 2 ? 'UTF-8' : 'UTF-16';
|
|
cb();
|
|
}
|
|
);
|
|
}
|
|
|
|
function onGetInstanceId() {
|
|
while (idRequests.length > 0) {
|
|
var idCallback = idRequests.pop();
|
|
idCallback(null, instanceId);
|
|
}
|
|
}
|
|
|
|
function onGetVersion(tx, dbVersion) {
|
|
if (dbVersion === 0) {
|
|
// initial schema
|
|
|
|
var meta = 'CREATE TABLE IF NOT EXISTS ' + META_STORE$1 +
|
|
' (dbid, db_version INTEGER)';
|
|
var attach = 'CREATE TABLE IF NOT EXISTS ' + ATTACH_STORE$1 +
|
|
' (digest UNIQUE, escaped TINYINT(1), body BLOB)';
|
|
var attachAndRev = 'CREATE TABLE IF NOT EXISTS ' +
|
|
ATTACH_AND_SEQ_STORE$1 + ' (digest, seq INTEGER)';
|
|
// TODO: migrate winningseq to INTEGER
|
|
var doc = 'CREATE TABLE IF NOT EXISTS ' + DOC_STORE$1 +
|
|
' (id unique, json, winningseq, max_seq INTEGER UNIQUE)';
|
|
var seq = 'CREATE TABLE IF NOT EXISTS ' + BY_SEQ_STORE$1 +
|
|
' (seq INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, ' +
|
|
'json, deleted TINYINT(1), doc_id, rev)';
|
|
var local = 'CREATE TABLE IF NOT EXISTS ' + LOCAL_STORE$1 +
|
|
' (id UNIQUE, rev, json)';
|
|
|
|
// creates
|
|
tx.executeSql(attach);
|
|
tx.executeSql(local);
|
|
tx.executeSql(attachAndRev, [], function () {
|
|
tx.executeSql(ATTACH_AND_SEQ_STORE_SEQ_INDEX_SQL);
|
|
tx.executeSql(ATTACH_AND_SEQ_STORE_ATTACH_INDEX_SQL);
|
|
});
|
|
tx.executeSql(doc, [], function () {
|
|
tx.executeSql(DOC_STORE_WINNINGSEQ_INDEX_SQL);
|
|
tx.executeSql(seq, [], function () {
|
|
tx.executeSql(BY_SEQ_STORE_DELETED_INDEX_SQL);
|
|
tx.executeSql(BY_SEQ_STORE_DOC_ID_REV_INDEX_SQL);
|
|
tx.executeSql(meta, [], function () {
|
|
// mark the db version, and new dbid
|
|
var initSeq = 'INSERT INTO ' + META_STORE$1 +
|
|
' (db_version, dbid) VALUES (?,?)';
|
|
instanceId = uuid();
|
|
var initSeqArgs = [ADAPTER_VERSION$1, instanceId];
|
|
tx.executeSql(initSeq, initSeqArgs, function () {
|
|
onGetInstanceId();
|
|
});
|
|
});
|
|
});
|
|
});
|
|
} else { // version > 0
|
|
|
|
var setupDone = function () {
|
|
var migrated = dbVersion < ADAPTER_VERSION$1;
|
|
if (migrated) {
|
|
// update the db version within this transaction
|
|
tx.executeSql('UPDATE ' + META_STORE$1 + ' SET db_version = ' +
|
|
ADAPTER_VERSION$1);
|
|
}
|
|
// notify db.id() callers
|
|
var sql = 'SELECT dbid FROM ' + META_STORE$1;
|
|
tx.executeSql(sql, [], function (tx, result) {
|
|
instanceId = result.rows.item(0).dbid;
|
|
onGetInstanceId();
|
|
});
|
|
};
|
|
|
|
// would love to use promises here, but then websql
|
|
// ends the transaction early
|
|
var tasks = [
|
|
runMigration2,
|
|
runMigration3,
|
|
runMigration4,
|
|
runMigration5,
|
|
runMigration6,
|
|
runMigration7,
|
|
setupDone
|
|
];
|
|
|
|
// run each migration sequentially
|
|
var i = dbVersion;
|
|
var nextMigration = function (tx) {
|
|
tasks[i - 1](tx, nextMigration);
|
|
i++;
|
|
};
|
|
nextMigration(tx);
|
|
}
|
|
}
|
|
|
|
function setup() {
|
|
db.transaction(function (tx) {
|
|
// first check the encoding
|
|
checkEncoding(tx, function () {
|
|
// then get the version
|
|
fetchVersion(tx);
|
|
});
|
|
}, websqlError(callback), dbCreated);
|
|
}
|
|
|
|
function fetchVersion(tx) {
|
|
var sql = 'SELECT sql FROM sqlite_master WHERE tbl_name = ' + META_STORE$1;
|
|
tx.executeSql(sql, [], function (tx, result) {
|
|
if (!result.rows.length) {
|
|
// database hasn't even been created yet (version 0)
|
|
onGetVersion(tx, 0);
|
|
} else if (!/db_version/.test(result.rows.item(0).sql)) {
|
|
// table was created, but without the new db_version column,
|
|
// so add it.
|
|
tx.executeSql('ALTER TABLE ' + META_STORE$1 +
|
|
' ADD COLUMN db_version INTEGER', [], function () {
|
|
// before version 2, this column didn't even exist
|
|
onGetVersion(tx, 1);
|
|
});
|
|
} else { // column exists, we can safely get it
|
|
tx.executeSql('SELECT db_version FROM ' + META_STORE$1,
|
|
[], function (tx, result) {
|
|
var dbVersion = result.rows.item(0).db_version;
|
|
onGetVersion(tx, dbVersion);
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
setup();
|
|
|
|
api.type = function () {
|
|
return 'websql';
|
|
};
|
|
|
|
api._id = toPromise(function (callback) {
|
|
callback(null, instanceId);
|
|
});
|
|
|
|
api._info = function (callback) {
|
|
db.readTransaction(function (tx) {
|
|
countDocs(tx, function (docCount) {
|
|
var sql = 'SELECT MAX(seq) AS seq FROM ' + BY_SEQ_STORE$1;
|
|
tx.executeSql(sql, [], function (tx, res) {
|
|
var updateSeq = res.rows.item(0).seq || 0;
|
|
callback(null, {
|
|
doc_count: docCount,
|
|
update_seq: updateSeq,
|
|
// for debugging
|
|
sqlite_plugin: db._sqlitePlugin,
|
|
websql_encoding: encoding
|
|
});
|
|
});
|
|
});
|
|
}, websqlError(callback));
|
|
};
|
|
|
|
api._bulkDocs = function (req, reqOpts, callback) {
|
|
websqlBulkDocs(opts, req, reqOpts, api, db, websqlChanges, callback);
|
|
};
|
|
|
|
api._get = function (id, opts, callback) {
|
|
var doc;
|
|
var metadata;
|
|
var err;
|
|
var tx = opts.ctx;
|
|
if (!tx) {
|
|
return db.readTransaction(function (txn) {
|
|
api._get(id, jsExtend.extend({ctx: txn}, opts), callback);
|
|
});
|
|
}
|
|
|
|
function finish() {
|
|
callback(err, {doc: doc, metadata: metadata, ctx: tx});
|
|
}
|
|
|
|
var sql;
|
|
var sqlArgs;
|
|
if (opts.rev) {
|
|
sql = select(
|
|
SELECT_DOCS,
|
|
[DOC_STORE$1, BY_SEQ_STORE$1],
|
|
DOC_STORE$1 + '.id=' + BY_SEQ_STORE$1 + '.doc_id',
|
|
[BY_SEQ_STORE$1 + '.doc_id=?', BY_SEQ_STORE$1 + '.rev=?']);
|
|
sqlArgs = [id, opts.rev];
|
|
} else {
|
|
sql = select(
|
|
SELECT_DOCS,
|
|
[DOC_STORE$1, BY_SEQ_STORE$1],
|
|
DOC_STORE_AND_BY_SEQ_JOINER,
|
|
DOC_STORE$1 + '.id=?');
|
|
sqlArgs = [id];
|
|
}
|
|
tx.executeSql(sql, sqlArgs, function (a, results) {
|
|
if (!results.rows.length) {
|
|
err = createError(MISSING_DOC, 'missing');
|
|
return finish();
|
|
}
|
|
var item = results.rows.item(0);
|
|
metadata = safeJsonParse(item.metadata);
|
|
if (item.deleted && !opts.rev) {
|
|
err = createError(MISSING_DOC, 'deleted');
|
|
return finish();
|
|
}
|
|
doc = unstringifyDoc(item.data, metadata.id, item.rev);
|
|
finish();
|
|
});
|
|
};
|
|
|
|
function countDocs(tx, callback) {
|
|
|
|
if (api._docCount !== -1) {
|
|
return callback(api._docCount);
|
|
}
|
|
|
|
// count the total rows
|
|
var sql = select(
|
|
'COUNT(' + DOC_STORE$1 + '.id) AS \'num\'',
|
|
[DOC_STORE$1, BY_SEQ_STORE$1],
|
|
DOC_STORE_AND_BY_SEQ_JOINER,
|
|
BY_SEQ_STORE$1 + '.deleted=0');
|
|
|
|
tx.executeSql(sql, [], function (tx, result) {
|
|
api._docCount = result.rows.item(0).num;
|
|
callback(api._docCount);
|
|
});
|
|
}
|
|
|
|
api._allDocs = function (opts, callback) {
|
|
var results = [];
|
|
var totalRows;
|
|
|
|
var start = 'startkey' in opts ? opts.startkey : false;
|
|
var end = 'endkey' in opts ? opts.endkey : false;
|
|
var key = 'key' in opts ? opts.key : false;
|
|
var descending = 'descending' in opts ? opts.descending : false;
|
|
var limit = 'limit' in opts ? opts.limit : -1;
|
|
var offset = 'skip' in opts ? opts.skip : 0;
|
|
var inclusiveEnd = opts.inclusive_end !== false;
|
|
|
|
var sqlArgs = [];
|
|
var criteria = [];
|
|
|
|
if (key !== false) {
|
|
criteria.push(DOC_STORE$1 + '.id = ?');
|
|
sqlArgs.push(key);
|
|
} else if (start !== false || end !== false) {
|
|
if (start !== false) {
|
|
criteria.push(DOC_STORE$1 + '.id ' + (descending ? '<=' : '>=') + ' ?');
|
|
sqlArgs.push(start);
|
|
}
|
|
if (end !== false) {
|
|
var comparator = descending ? '>' : '<';
|
|
if (inclusiveEnd) {
|
|
comparator += '=';
|
|
}
|
|
criteria.push(DOC_STORE$1 + '.id ' + comparator + ' ?');
|
|
sqlArgs.push(end);
|
|
}
|
|
if (key !== false) {
|
|
criteria.push(DOC_STORE$1 + '.id = ?');
|
|
sqlArgs.push(key);
|
|
}
|
|
}
|
|
|
|
if (opts.deleted !== 'ok') {
|
|
// report deleted if keys are specified
|
|
criteria.push(BY_SEQ_STORE$1 + '.deleted = 0');
|
|
}
|
|
|
|
db.readTransaction(function (tx) {
|
|
|
|
// first count up the total rows
|
|
countDocs(tx, function (count) {
|
|
totalRows = count;
|
|
|
|
if (limit === 0) {
|
|
return;
|
|
}
|
|
|
|
// then actually fetch the documents
|
|
var sql = select(
|
|
SELECT_DOCS,
|
|
[DOC_STORE$1, BY_SEQ_STORE$1],
|
|
DOC_STORE_AND_BY_SEQ_JOINER,
|
|
criteria,
|
|
DOC_STORE$1 + '.id ' + (descending ? 'DESC' : 'ASC')
|
|
);
|
|
sql += ' LIMIT ' + limit + ' OFFSET ' + offset;
|
|
|
|
tx.executeSql(sql, sqlArgs, function (tx, result) {
|
|
for (var i = 0, l = result.rows.length; i < l; i++) {
|
|
var item = result.rows.item(i);
|
|
var metadata = safeJsonParse(item.metadata);
|
|
var id = metadata.id;
|
|
var data = unstringifyDoc(item.data, id, item.rev);
|
|
var winningRev = data._rev;
|
|
var doc = {
|
|
id: id,
|
|
key: id,
|
|
value: {rev: winningRev}
|
|
};
|
|
if (opts.include_docs) {
|
|
doc.doc = data;
|
|
doc.doc._rev = winningRev;
|
|
if (opts.conflicts) {
|
|
doc.doc._conflicts = collectConflicts(metadata);
|
|
}
|
|
fetchAttachmentsIfNecessary$1(doc.doc, opts, api, tx);
|
|
}
|
|
if (item.deleted) {
|
|
if (opts.deleted === 'ok') {
|
|
doc.value.deleted = true;
|
|
doc.doc = null;
|
|
} else {
|
|
continue;
|
|
}
|
|
}
|
|
results.push(doc);
|
|
}
|
|
});
|
|
});
|
|
}, websqlError(callback), function () {
|
|
callback(null, {
|
|
total_rows: totalRows,
|
|
offset: opts.skip,
|
|
rows: results
|
|
});
|
|
});
|
|
};
|
|
|
|
api._changes = function (opts) {
|
|
opts = clone(opts);
|
|
|
|
if (opts.continuous) {
|
|
var id = api._name + ':' + uuid();
|
|
websqlChanges.addListener(api._name, id, api, opts);
|
|
websqlChanges.notify(api._name);
|
|
return {
|
|
cancel: function () {
|
|
websqlChanges.removeListener(api._name, id);
|
|
}
|
|
};
|
|
}
|
|
|
|
var descending = opts.descending;
|
|
|
|
// Ignore the `since` parameter when `descending` is true
|
|
opts.since = opts.since && !descending ? opts.since : 0;
|
|
|
|
var limit = 'limit' in opts ? opts.limit : -1;
|
|
if (limit === 0) {
|
|
limit = 1; // per CouchDB _changes spec
|
|
}
|
|
|
|
var returnDocs;
|
|
if ('return_docs' in opts) {
|
|
returnDocs = opts.return_docs;
|
|
} else if ('returnDocs' in opts) {
|
|
// TODO: Remove 'returnDocs' in favor of 'return_docs' in a future release
|
|
returnDocs = opts.returnDocs;
|
|
} else {
|
|
returnDocs = true;
|
|
}
|
|
var results = [];
|
|
var numResults = 0;
|
|
|
|
function fetchChanges() {
|
|
|
|
var selectStmt =
|
|
DOC_STORE$1 + '.json AS metadata, ' +
|
|
DOC_STORE$1 + '.max_seq AS maxSeq, ' +
|
|
BY_SEQ_STORE$1 + '.json AS winningDoc, ' +
|
|
BY_SEQ_STORE$1 + '.rev AS winningRev ';
|
|
|
|
var from = DOC_STORE$1 + ' JOIN ' + BY_SEQ_STORE$1;
|
|
|
|
var joiner = DOC_STORE$1 + '.id=' + BY_SEQ_STORE$1 + '.doc_id' +
|
|
' AND ' + DOC_STORE$1 + '.winningseq=' + BY_SEQ_STORE$1 + '.seq';
|
|
|
|
var criteria = ['maxSeq > ?'];
|
|
var sqlArgs = [opts.since];
|
|
|
|
if (opts.doc_ids) {
|
|
criteria.push(DOC_STORE$1 + '.id IN ' + qMarks(opts.doc_ids.length));
|
|
sqlArgs = sqlArgs.concat(opts.doc_ids);
|
|
}
|
|
|
|
var orderBy = 'maxSeq ' + (descending ? 'DESC' : 'ASC');
|
|
|
|
var sql = select(selectStmt, from, joiner, criteria, orderBy);
|
|
|
|
var filter = filterChange(opts);
|
|
if (!opts.view && !opts.filter) {
|
|
// we can just limit in the query
|
|
sql += ' LIMIT ' + limit;
|
|
}
|
|
|
|
var lastSeq = opts.since || 0;
|
|
db.readTransaction(function (tx) {
|
|
tx.executeSql(sql, sqlArgs, function (tx, result) {
|
|
function reportChange(change) {
|
|
return function () {
|
|
opts.onChange(change);
|
|
};
|
|
}
|
|
for (var i = 0, l = result.rows.length; i < l; i++) {
|
|
var item = result.rows.item(i);
|
|
var metadata = safeJsonParse(item.metadata);
|
|
lastSeq = item.maxSeq;
|
|
|
|
var doc = unstringifyDoc(item.winningDoc, metadata.id,
|
|
item.winningRev);
|
|
var change = opts.processChange(doc, metadata, opts);
|
|
change.seq = item.maxSeq;
|
|
|
|
var filtered = filter(change);
|
|
if (typeof filtered === 'object') {
|
|
return opts.complete(filtered);
|
|
}
|
|
|
|
if (filtered) {
|
|
numResults++;
|
|
if (returnDocs) {
|
|
results.push(change);
|
|
}
|
|
// process the attachment immediately
|
|
// for the benefit of live listeners
|
|
if (opts.attachments && opts.include_docs) {
|
|
fetchAttachmentsIfNecessary$1(doc, opts, api, tx,
|
|
reportChange(change));
|
|
} else {
|
|
reportChange(change)();
|
|
}
|
|
}
|
|
if (numResults === limit) {
|
|
break;
|
|
}
|
|
}
|
|
});
|
|
}, websqlError(opts.complete), function () {
|
|
if (!opts.continuous) {
|
|
opts.complete(null, {
|
|
results: results,
|
|
last_seq: lastSeq
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
fetchChanges();
|
|
};
|
|
|
|
api._close = function (callback) {
|
|
//WebSQL databases do not need to be closed
|
|
callback();
|
|
};
|
|
|
|
api._getAttachment = function (attachment, opts, callback) {
|
|
var res;
|
|
var tx = opts.ctx;
|
|
var digest = attachment.digest;
|
|
var type = attachment.content_type;
|
|
var sql = 'SELECT escaped, ' +
|
|
'CASE WHEN escaped = 1 THEN body ELSE HEX(body) END AS body FROM ' +
|
|
ATTACH_STORE$1 + ' WHERE digest=?';
|
|
tx.executeSql(sql, [digest], function (tx, result) {
|
|
// websql has a bug where \u0000 causes early truncation in strings
|
|
// and blobs. to work around this, we used to use the hex() function,
|
|
// but that's not performant. after migration 6, we remove \u0000
|
|
// and add it back in afterwards
|
|
var item = result.rows.item(0);
|
|
var data = item.escaped ? unescapeBlob(item.body) :
|
|
parseHexString(item.body, encoding);
|
|
if (opts.binary) {
|
|
res = binStringToBluffer(data, type);
|
|
} else {
|
|
res = btoa$1(data);
|
|
}
|
|
callback(null, res);
|
|
});
|
|
};
|
|
|
|
api._getRevisionTree = function (docId, callback) {
|
|
db.readTransaction(function (tx) {
|
|
var sql = 'SELECT json AS metadata FROM ' + DOC_STORE$1 + ' WHERE id = ?';
|
|
tx.executeSql(sql, [docId], function (tx, result) {
|
|
if (!result.rows.length) {
|
|
callback(createError(MISSING_DOC));
|
|
} else {
|
|
var data = safeJsonParse(result.rows.item(0).metadata);
|
|
callback(null, data.rev_tree);
|
|
}
|
|
});
|
|
});
|
|
};
|
|
|
|
api._doCompaction = function (docId, revs, callback) {
|
|
if (!revs.length) {
|
|
return callback();
|
|
}
|
|
db.transaction(function (tx) {
|
|
|
|
// update doc store
|
|
var sql = 'SELECT json AS metadata FROM ' + DOC_STORE$1 + ' WHERE id = ?';
|
|
tx.executeSql(sql, [docId], function (tx, result) {
|
|
var metadata = safeJsonParse(result.rows.item(0).metadata);
|
|
traverseRevTree(metadata.rev_tree, function (isLeaf, pos,
|
|
revHash, ctx, opts) {
|
|
var rev = pos + '-' + revHash;
|
|
if (revs.indexOf(rev) !== -1) {
|
|
opts.status = 'missing';
|
|
}
|
|
});
|
|
|
|
var sql = 'UPDATE ' + DOC_STORE$1 + ' SET json = ? WHERE id = ?';
|
|
tx.executeSql(sql, [safeJsonStringify(metadata), docId]);
|
|
});
|
|
|
|
compactRevs$1(revs, docId, tx);
|
|
}, websqlError(callback), function () {
|
|
callback();
|
|
});
|
|
};
|
|
|
|
api._getLocal = function (id, callback) {
|
|
db.readTransaction(function (tx) {
|
|
var sql = 'SELECT json, rev FROM ' + LOCAL_STORE$1 + ' WHERE id=?';
|
|
tx.executeSql(sql, [id], function (tx, res) {
|
|
if (res.rows.length) {
|
|
var item = res.rows.item(0);
|
|
var doc = unstringifyDoc(item.json, id, item.rev);
|
|
callback(null, doc);
|
|
} else {
|
|
callback(createError(MISSING_DOC));
|
|
}
|
|
});
|
|
});
|
|
};
|
|
|
|
api._putLocal = function (doc, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
delete doc._revisions; // ignore this, trust the rev
|
|
var oldRev = doc._rev;
|
|
var id = doc._id;
|
|
var newRev;
|
|
if (!oldRev) {
|
|
newRev = doc._rev = '0-1';
|
|
} else {
|
|
newRev = doc._rev = '0-' + (parseInt(oldRev.split('-')[1], 10) + 1);
|
|
}
|
|
var json = stringifyDoc(doc);
|
|
|
|
var ret;
|
|
function putLocal(tx) {
|
|
var sql;
|
|
var values;
|
|
if (oldRev) {
|
|
sql = 'UPDATE ' + LOCAL_STORE$1 + ' SET rev=?, json=? ' +
|
|
'WHERE id=? AND rev=?';
|
|
values = [newRev, json, id, oldRev];
|
|
} else {
|
|
sql = 'INSERT INTO ' + LOCAL_STORE$1 + ' (id, rev, json) VALUES (?,?,?)';
|
|
values = [id, newRev, json];
|
|
}
|
|
tx.executeSql(sql, values, function (tx, res) {
|
|
if (res.rowsAffected) {
|
|
ret = {ok: true, id: id, rev: newRev};
|
|
if (opts.ctx) { // return immediately
|
|
callback(null, ret);
|
|
}
|
|
} else {
|
|
callback(createError(REV_CONFLICT));
|
|
}
|
|
}, function () {
|
|
callback(createError(REV_CONFLICT));
|
|
return false; // ack that we handled the error
|
|
});
|
|
}
|
|
|
|
if (opts.ctx) {
|
|
putLocal(opts.ctx);
|
|
} else {
|
|
db.transaction(putLocal, websqlError(callback), function () {
|
|
if (ret) {
|
|
callback(null, ret);
|
|
}
|
|
});
|
|
}
|
|
};
|
|
|
|
api._removeLocal = function (doc, opts, callback) {
|
|
if (typeof opts === 'function') {
|
|
callback = opts;
|
|
opts = {};
|
|
}
|
|
var ret;
|
|
|
|
function removeLocal(tx) {
|
|
var sql = 'DELETE FROM ' + LOCAL_STORE$1 + ' WHERE id=? AND rev=?';
|
|
var params = [doc._id, doc._rev];
|
|
tx.executeSql(sql, params, function (tx, res) {
|
|
if (!res.rowsAffected) {
|
|
return callback(createError(MISSING_DOC));
|
|
}
|
|
ret = {ok: true, id: doc._id, rev: '0-0'};
|
|
if (opts.ctx) { // return immediately
|
|
callback(null, ret);
|
|
}
|
|
});
|
|
}
|
|
|
|
if (opts.ctx) {
|
|
removeLocal(opts.ctx);
|
|
} else {
|
|
db.transaction(removeLocal, websqlError(callback), function () {
|
|
if (ret) {
|
|
callback(null, ret);
|
|
}
|
|
});
|
|
}
|
|
};
|
|
|
|
api._destroy = function (opts, callback) {
|
|
websqlChanges.removeAllListeners(api._name);
|
|
db.transaction(function (tx) {
|
|
var stores = [DOC_STORE$1, BY_SEQ_STORE$1, ATTACH_STORE$1, META_STORE$1,
|
|
LOCAL_STORE$1, ATTACH_AND_SEQ_STORE$1];
|
|
stores.forEach(function (store) {
|
|
tx.executeSql('DROP TABLE IF EXISTS ' + store, []);
|
|
});
|
|
}, websqlError(callback), function () {
|
|
if (hasLocalStorage()) {
|
|
delete window.localStorage['_pouch__websqldb_' + api._name];
|
|
delete window.localStorage[api._name];
|
|
}
|
|
callback(null, {'ok': true});
|
|
});
|
|
};
|
|
}
|
|
|
|
// in the browser, use a prefix. in Node, don't bother having one
|
|
WebSqlPouch.use_prefix = !!(typeof process === 'undefined' || process.browser);
|
|
|
|
WebSqlPouch.valid = valid;
|
|
|
|
var adapters = {
|
|
idb: IdbPouch,
|
|
websql: WebSqlPouch
|
|
};
|
|
|
|
PouchDB.ajax = ajax;
|
|
PouchDB.utils = utils;
|
|
PouchDB.Errors = allErrors;
|
|
PouchDB.replicate = replication.replicate;
|
|
PouchDB.sync = sync;
|
|
PouchDB.version = '5.3.2'; // will be automatically supplied by build.sh
|
|
PouchDB.adapter('http', HttpPouch);
|
|
PouchDB.adapter('https', HttpPouch);
|
|
|
|
PouchDB.plugin(mapreduce);
|
|
|
|
Object.keys(adapters).forEach(function (adapterName) {
|
|
PouchDB.adapter(adapterName, adapters[adapterName], true);
|
|
});
|
|
|
|
PouchDB.preferredAdapters = ['websql'];
|
|
|
|
module.exports = PouchDB;
|
|
|
|
/* jshint ignore:end */ |