Split code in to multiple files.
This commit is contained in:
Julien Fontanet
parent
daf42b63c8
commit
292c929117
1
packages/xo-lib/.npmignore
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1
packages/xo-lib/.npmignore
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@ -0,0 +1 @@
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*.spec.js
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132
packages/xo-lib/api.js
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132
packages/xo-lib/api.js
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@ -0,0 +1,132 @@
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'use strict';
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//====================================================================
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var Bluebird = require('bluebird');
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var EventEmitter = require('events').EventEmitter;
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var inherits = require('util').inherits;
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var jsonRpc = require('json-rpc');
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var MethodNotFound = require('json-rpc/errors').MethodNotFound;
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var startsWith = require('lodash.startsWith');
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var WebSocket = require('ws');
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var ConnectionError = require('./connection-error');
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var fixUrl = require('./fixUrl');
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//====================================================================
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function getCurrentUrl() {
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/* global window: false */
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if (typeof window === undefined) {
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throw new Error('cannot get current URL');
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}
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return String(window.location);
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}
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function makeDeferred() {
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var resolve, reject;
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var promise = new Bluebird(function (resolve_, reject_) {
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resolve = resolve_;
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reject = reject_;
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});
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return {
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promise: promise,
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reject: reject,
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resolve: resolve,
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};
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}
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//--------------------------------------------------------------------
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// Low level interface to XO.
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function Api(url) {
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// Super constructor.
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EventEmitter.call(this);
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// Fix the URL (ensure correct protocol and /api/ path).
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this._url = fixUrl(url || getCurrentUrl());
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// Will contains the WebSocket.
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this._socket = null;
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// The JSON-RPC server.
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var this_ = this;
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this._jsonRpc = jsonRpc.createServer(function (message) {
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if (message.type === 'notification') {
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this_.emit('notification', message);
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} else {
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// This object does not support requests.
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throw new MethodNotFound(message.method);
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}
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}).on('data', function (message) {
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this_._socket.send(JSON.stringify(message));
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});
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}
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inherits(Api, EventEmitter);
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Api.prototype.close = function () {
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if (this._socket) {
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this._socket.close();
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}
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};
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Api.prototype.connect = Bluebird.method(function () {
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if (this._socket) {
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return;
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}
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var deferred = makeDeferred();
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var opts = {};
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if (startsWith(this._url, 'wss')) {
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// Due to imperfect TLS implementation in XO-Server.
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opts.rejectUnauthorized = false;
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}
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var socket = this._socket = new WebSocket(this._url, '', opts);
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// Used to avoid binding listeners to this object.
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var this_ = this;
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// When the socket opens, send any queued requests.
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socket.addEventListener('open', function () {
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// Resolves the promise.
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deferred.resolve();
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this_.emit('connected');
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});
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socket.addEventListener('message', function (message) {
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this_._jsonRpc.write(message.data);
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});
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socket.addEventListener('close', function () {
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this_._socket = null;
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this_._jsonRpc.failPendingRequests(new ConnectionError());
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// Only emit this event if connected before.
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if (deferred.promise.isFulfilled()) {
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this_.emit('disconnected');
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}
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});
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socket.addEventListener('error', function (error) {
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// Fails the connect promise if possible.
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deferred.reject(error);
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});
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return deferred.promise;
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});
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Api.prototype.call = function (method, params) {
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var jsonRpc = this._jsonRpc;
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return this.connect().then(function () {
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return jsonRpc.request(method, params);
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});
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};
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module.exports = Api;
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9
packages/xo-lib/connection-error.js
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9
packages/xo-lib/connection-error.js
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@ -0,0 +1,9 @@
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'use strict';
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//====================================================================
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var makeError = require('make-error');
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//====================================================================
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module.exports = makeError('ConnectionError');
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21
packages/xo-lib/fix-url.js
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21
packages/xo-lib/fix-url.js
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@ -0,0 +1,21 @@
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'use strict';
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//====================================================================
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// Fix URL if necessary.
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var URL_RE = /^(?:(?:http|ws)(s)?:\/\/)?(.*?)\/*(?:\/api\/)?(\?.*?)?(?:#.*)?$/;
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function fixUrl(url) {
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var matches = URL_RE.exec(url);
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var isSecure = !!matches[1];
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var hostAndPath = matches[2];
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var search = matches[3];
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return [
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isSecure ? 'wss' : 'ws',
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'://',
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hostAndPath,
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'/api/',
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search,
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].join('');
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}
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module.exports = fixUrl;
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@ -9,7 +9,7 @@ var expect = require('must');
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/* jshint mocha: true */
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describe('fixUrl()', function () {
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var fixUrl = require('./').fixUrl;
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var fixUrl = require('./fix-url');
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describe('protocol', function () {
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it('is added if missing', function () {
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@ -1,426 +1,4 @@
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'use strict';
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//====================================================================
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var Bluebird = require('bluebird');
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Bluebird.longStackTraces();
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var EventEmitter = require('events').EventEmitter;
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var inherits = require('util').inherits;
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var isString = require('lodash.isstring');
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var jsonRpc = require('json-rpc');
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var makeError = require('make-error');
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var MethodNotFound = require('json-rpc/errors').MethodNotFound;
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var WebSocket = require('ws');
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var createCollection = require('./collection');
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//====================================================================
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// Expose Bluebird for now to ease integration (e.g. with Angular.js).
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exports.setScheduler = Bluebird.setScheduler;
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//====================================================================
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function makeDeferred() {
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var resolve, reject;
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var promise = new Bluebird(function (resolve_, reject_) {
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resolve = resolve_;
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reject = reject_;
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});
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return {
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promise: promise,
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reject: reject,
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resolve: resolve,
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};
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}
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function makeStandaloneDeferred() {
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var resolve, reject;
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var promise = new Bluebird(function (resolve_, reject_) {
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resolve = resolve_;
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reject = reject_;
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});
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promise.resolve = resolve;
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promise.reject = reject;
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return promise;
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}
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function noop() {}
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function startsWith(string, target) {
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return (string.lastIndexOf(target, 0) === 0);
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}
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//====================================================================
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function returnThis() {
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/* jshint validthis: true */
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return this;
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}
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// Returns an iterator to the Fibonacci sequence.
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function fibonacci(start) {
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var prev = 0;
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var curr = start || 1;
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var iterator = {
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next: function () {
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var tmp = curr;
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curr += prev;
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prev = tmp;
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return {
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done: false,
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value: prev,
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};
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},
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};
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// Make the iterator a true iterable (ES6).
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if (typeof Symbol !== 'undefined') {
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iterator[Symbol.iterator] = returnThis;
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}
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return iterator;
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}
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//--------------------------------------------------------------------
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function BackOff(generator, opts) {
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if (!opts) {
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opts = {};
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}
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this._attempts = 0;
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this._generator = generator;
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this._iterator = generator();
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this._maxAttempts = opts.maxAttempts || Infinity;
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}
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BackOff.prototype.wait = function () {
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var maxAttempts = this._maxAttempts;
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if (this._attempts++ > maxAttempts) {
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return Bluebird.reject(new Error(
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'maximum attempts reached (' + maxAttempts +')'
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));
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}
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return Bluebird.delay(this._iterator.next().value);
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};
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BackOff.prototype.reset = function () {
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this._attempts = 0;
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this._iterator = this._generator();
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};
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//====================================================================
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// Fix URL if necessary.
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var URL_RE = /^(?:(?:http|ws)(s)?:\/\/)?(.*?)\/*(?:\/api\/)?(\?.*?)?(?:#.*)?$/;
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function fixUrl(url) {
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var matches = URL_RE.exec(url);
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var isSecure = !!matches[1];
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var hostAndPath = matches[2];
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var search = matches[3];
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return [
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isSecure ? 'wss' : 'ws',
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'://',
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hostAndPath,
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'/api/',
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search,
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].join('');
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}
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exports.fixUrl = fixUrl;
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//====================================================================
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function getCurrentUrl() {
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/* global window: false */
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if (typeof window === undefined) {
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throw new Error('cannot get current URL');
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}
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return String(window.location);
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}
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//====================================================================
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var ConnectionLost = makeError('ConnectionLost');
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// Low level interface to XO.
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function Api(url) {
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// Super constructor.
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EventEmitter.call(this);
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// Fix the URL (ensure correct protocol and /api/ path).
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this._url = fixUrl(url || getCurrentUrl());
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// Will contains the WebSocket.
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this._socket = null;
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// The JSON-RPC server.
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var this_ = this;
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this._jsonRpc = jsonRpc.createServer(function (message) {
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if (message.type === 'notification') {
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this_.emit('notification', message);
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} else {
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// This object does not support requests.
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throw new MethodNotFound(message.method);
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}
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}).on('data', function (message) {
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this_._socket.send(JSON.stringify(message));
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});
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}
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inherits(Api, EventEmitter);
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Api.prototype.close = function () {
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if (this._socket) {
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this._socket.close();
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}
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};
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Api.prototype.connect = Bluebird.method(function () {
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if (this._socket) {
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return;
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}
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var deferred = makeDeferred();
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var opts = {};
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if (startsWith(this._url, 'wss')) {
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// Due to imperfect TLS implementation in XO-Server.
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opts.rejectUnauthorized = false;
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}
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var socket = this._socket = new WebSocket(this._url, '', opts);
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// Used to avoid binding listeners to this object.
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var this_ = this;
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// When the socket opens, send any queued requests.
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socket.addEventListener('open', function () {
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// Resolves the promise.
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deferred.resolve();
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this_.emit('connected');
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});
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socket.addEventListener('message', function (message) {
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this_._jsonRpc.write(message.data);
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});
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socket.addEventListener('close', function () {
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this_._socket = null;
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this_._jsonRpc.failPendingRequests(new ConnectionLost());
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// Only emit this event if connected before.
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if (deferred.promise.isFulfilled()) {
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this_.emit('disconnected');
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}
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});
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socket.addEventListener('error', function (error) {
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// Fails the connect promise if possible.
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deferred.reject(error);
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});
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return deferred.promise;
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});
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Api.prototype.call = function (method, params) {
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var jsonRpc = this._jsonRpc;
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return this.connect().then(function () {
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return jsonRpc.request(method, params);
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});
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};
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exports.Api = Api;
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//====================================================================
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var objectsOptions = {
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indexes: [
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'ref',
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'type',
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'UUID',
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],
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key: function (item) {
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return item.UUID || item.ref;
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},
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};
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// Try connecting to Xo-Server.
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function tryConnect() {
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/* jshint validthis: true */
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this.status = 'connecting';
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return this._api.connect().bind(this).catch(function () {
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this.status = 'disconnected';
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return this._backOff.wait().bind(this).then(tryConnect);
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});
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}
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function resetSession() {
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/* jshint validthis: true */
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// No session has been opened and no credentials has been provided
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// yet: nothing to do.
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if (this._credentials && this._credentials.isPending()) {
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return;
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}
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// Clear any existing user.
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this.user = null;
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// Create a promise for the next credentials.
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this._credentials = makeStandaloneDeferred();
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// The promise from the previous session needs to be rejected.
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if (this._session && this._session.isPending()) {
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// Ensure Bluebird does not mark this rejection as unhandled.
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this._session.catch(noop);
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this._session.reject();
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}
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// Create a promise for the next session.
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this._session = makeStandaloneDeferred();
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}
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function signIn() {
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/* jshint validthis: true */
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// Capture current session.
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var session = this._session;
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this._credentials.bind(this).then(function (credentials) {
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return this._api.call(
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credentials.token ?
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'session.signInWithToken' :
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'session.signInWithPassword',
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credentials
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);
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}).then(
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function (user) {
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this.user = user;
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this._api.call('xo.getAllObjects').bind(this).then(function (objects) {
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this.objects.clear();
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this.objects.setMultiple(objects);
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}).catch(noop); // Ignore any errors.
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session.resolve();
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},
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function (error) {
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session.reject(error);
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}
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);
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}
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// High level interface to Xo.
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//
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// Handle auto-reconnect, sign in & objects cache.
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function Xo(opts) {
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var self = this;
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if (!opts) {
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opts = {};
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} else if (isString(opts)) {
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opts = {
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url: opts,
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};
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}
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this._api = new Api(opts.url);
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this._backOff = new BackOff(function () {
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return fibonacci(1e3);
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});
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this.objects = createCollection(objectsOptions);
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this.status = 'disconnected';
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self._api.on('connected', function () {
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self.status = 'connected';
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self._backOff.reset();
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signIn.call(self);
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});
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self._api.on('disconnected', function () {
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self.status = 'disconnected';
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resetSession.call(self);
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tryConnect.call(self);
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});
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self._api.on('notification', function (notification) {
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if (notification.method !== 'all') {
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return;
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}
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var method = (
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notification.params.type === 'exit' ?
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'unset' :
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'set'
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) + 'Multiple';
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self.objects[method](notification.params.items);
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});
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resetSession.call(this);
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if (opts.credentials) {
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this._credentials.resolve(opts.credentials);
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}
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tryConnect.call(this);
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}
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Xo.prototype.call = function (method, params) {
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// Prevent session.*() from being because it may interfere
|
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// with this class session management.
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if (startsWith(method, 'session.')) {
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return Bluebird.reject(
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new Error('session.*() methods are disabled from this interface')
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);
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}
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return this._session.bind(this).then(function () {
|
||||
return this._api.call(method, params).bind(this).catch(ConnectionLost, function () {
|
||||
// Retry automatically.
|
||||
return this.call(method, params);
|
||||
});
|
||||
});
|
||||
};
|
||||
|
||||
Xo.prototype.signIn = function (credentials) {
|
||||
// Ignore the returned promise as it can cause concurrency issues.
|
||||
this.signOut();
|
||||
|
||||
this._credentials.resolve(credentials);
|
||||
|
||||
return this._session;
|
||||
};
|
||||
|
||||
Xo.prototype.signOut = function () {
|
||||
// Already signed in?
|
||||
var promise;
|
||||
if (!this._session.isPending()) {
|
||||
promise = this._api.call('session.signOut');
|
||||
}
|
||||
|
||||
resetSession.call(this);
|
||||
|
||||
signIn.call(this);
|
||||
|
||||
return promise || Bluebird.resolve();
|
||||
};
|
||||
|
||||
exports.Xo = Xo;
|
||||
exports.Api = require('./api');
|
||||
exports.Xo = require('./xo');
|
||||
|
||||
@ -19,12 +19,8 @@
|
||||
"node": ">=0.8.0"
|
||||
},
|
||||
"scripts": {
|
||||
"test": "mocha index.spec.js"
|
||||
"test": "mocha *.spec.js"
|
||||
},
|
||||
"files": [
|
||||
"index.js",
|
||||
"collection.js"
|
||||
],
|
||||
"dependencies": {
|
||||
"bluebird": "^2.9.6",
|
||||
"json-rpc": "git://github.com/julien-f/js-json-rpc#v0.3.1",
|
||||
@ -32,6 +28,7 @@
|
||||
"lodash.foreach": "^3.0.1",
|
||||
"lodash.indexof": "^3.0.0",
|
||||
"lodash.isstring": "^3.0.0",
|
||||
"lodash.startswith": "^3.0.0",
|
||||
"make-error": "^0.3.0",
|
||||
"ws": "^0.7.1"
|
||||
},
|
||||
|
||||
278
packages/xo-lib/xo.js
Normal file
278
packages/xo-lib/xo.js
Normal file
@ -0,0 +1,278 @@
|
||||
'use strict';
|
||||
|
||||
//====================================================================
|
||||
|
||||
var Bluebird = require('bluebird');
|
||||
var isString = require('lodash.isstring');
|
||||
var startsWith = require('lodash.startsWith');
|
||||
|
||||
var Api = require('./api');
|
||||
var ConnectionError = require('./connection-error');
|
||||
var createCollection = require('./collection');
|
||||
|
||||
//====================================================================
|
||||
|
||||
// Expose Bluebird for now to ease integration (e.g. with Angular.js).
|
||||
exports.setScheduler = Bluebird.setScheduler;
|
||||
|
||||
//====================================================================
|
||||
|
||||
function makeStandaloneDeferred() {
|
||||
var resolve, reject;
|
||||
|
||||
var promise = new Bluebird(function (resolve_, reject_) {
|
||||
resolve = resolve_;
|
||||
reject = reject_;
|
||||
});
|
||||
promise.resolve = resolve;
|
||||
promise.reject = reject;
|
||||
|
||||
return promise;
|
||||
}
|
||||
|
||||
function noop() {}
|
||||
|
||||
//====================================================================
|
||||
|
||||
function returnThis() {
|
||||
/* jshint validthis: true */
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
// Returns an iterator to the Fibonacci sequence.
|
||||
function fibonacci(start) {
|
||||
var prev = 0;
|
||||
var curr = start || 1;
|
||||
|
||||
var iterator = {
|
||||
next: function () {
|
||||
var tmp = curr;
|
||||
curr += prev;
|
||||
prev = tmp;
|
||||
|
||||
return {
|
||||
done: false,
|
||||
value: prev,
|
||||
};
|
||||
},
|
||||
};
|
||||
|
||||
// Make the iterator a true iterable (ES6).
|
||||
if (typeof Symbol !== 'undefined') {
|
||||
iterator[Symbol.iterator] = returnThis;
|
||||
}
|
||||
|
||||
return iterator;
|
||||
}
|
||||
|
||||
//--------------------------------------------------------------------
|
||||
|
||||
function BackOff(generator, opts) {
|
||||
if (!opts) {
|
||||
opts = {};
|
||||
}
|
||||
|
||||
this._attempts = 0;
|
||||
this._generator = generator;
|
||||
this._iterator = generator();
|
||||
this._maxAttempts = opts.maxAttempts || Infinity;
|
||||
}
|
||||
|
||||
BackOff.prototype.wait = function () {
|
||||
var maxAttempts = this._maxAttempts;
|
||||
if (this._attempts++ > maxAttempts) {
|
||||
return Bluebird.reject(new Error(
|
||||
'maximum attempts reached (' + maxAttempts +')'
|
||||
));
|
||||
}
|
||||
|
||||
return Bluebird.delay(this._iterator.next().value);
|
||||
};
|
||||
|
||||
BackOff.prototype.reset = function () {
|
||||
this._attempts = 0;
|
||||
this._iterator = this._generator();
|
||||
};
|
||||
|
||||
//====================================================================
|
||||
|
||||
var objectsOptions = {
|
||||
indexes: [
|
||||
'ref',
|
||||
'type',
|
||||
'UUID',
|
||||
],
|
||||
key: function (item) {
|
||||
return item.UUID || item.ref;
|
||||
},
|
||||
};
|
||||
|
||||
// Try connecting to Xo-Server.
|
||||
function tryConnect() {
|
||||
/* jshint validthis: true */
|
||||
|
||||
this.status = 'connecting';
|
||||
return this._api.connect().bind(this).catch(function () {
|
||||
this.status = 'disconnected';
|
||||
|
||||
return this._backOff.wait().bind(this).then(tryConnect);
|
||||
});
|
||||
}
|
||||
|
||||
function resetSession() {
|
||||
/* jshint validthis: true */
|
||||
|
||||
// No session has been opened and no credentials has been provided
|
||||
// yet: nothing to do.
|
||||
if (this._credentials && this._credentials.isPending()) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Clear any existing user.
|
||||
this.user = null;
|
||||
|
||||
// Create a promise for the next credentials.
|
||||
this._credentials = makeStandaloneDeferred();
|
||||
|
||||
// The promise from the previous session needs to be rejected.
|
||||
if (this._session && this._session.isPending()) {
|
||||
// Ensure Bluebird does not mark this rejection as unhandled.
|
||||
this._session.catch(noop);
|
||||
|
||||
this._session.reject();
|
||||
}
|
||||
|
||||
// Create a promise for the next session.
|
||||
this._session = makeStandaloneDeferred();
|
||||
}
|
||||
|
||||
function signIn() {
|
||||
/* jshint validthis: true */
|
||||
|
||||
// Capture current session.
|
||||
var session = this._session;
|
||||
|
||||
this._credentials.bind(this).then(function (credentials) {
|
||||
return this._api.call(
|
||||
credentials.token ?
|
||||
'session.signInWithToken' :
|
||||
'session.signInWithPassword',
|
||||
credentials
|
||||
);
|
||||
}).then(
|
||||
function (user) {
|
||||
this.user = user;
|
||||
|
||||
this._api.call('xo.getAllObjects').bind(this).then(function (objects) {
|
||||
this.objects.clear();
|
||||
this.objects.setMultiple(objects);
|
||||
}).catch(noop); // Ignore any errors.
|
||||
|
||||
session.resolve();
|
||||
},
|
||||
function (error) {
|
||||
session.reject(error);
|
||||
}
|
||||
);
|
||||
}
|
||||
|
||||
// High level interface to Xo.
|
||||
//
|
||||
// Handle auto-reconnect, sign in & objects cache.
|
||||
function Xo(opts) {
|
||||
var self = this;
|
||||
|
||||
if (!opts) {
|
||||
opts = {};
|
||||
} else if (isString(opts)) {
|
||||
opts = {
|
||||
url: opts,
|
||||
};
|
||||
}
|
||||
|
||||
this._api = new Api(opts.url);
|
||||
this._backOff = new BackOff(function () {
|
||||
return fibonacci(1e3);
|
||||
});
|
||||
this.objects = createCollection(objectsOptions);
|
||||
this.status = 'disconnected';
|
||||
|
||||
self._api.on('connected', function () {
|
||||
self.status = 'connected';
|
||||
self._backOff.reset();
|
||||
|
||||
signIn.call(self);
|
||||
});
|
||||
|
||||
self._api.on('disconnected', function () {
|
||||
self.status = 'disconnected';
|
||||
|
||||
resetSession.call(self);
|
||||
tryConnect.call(self);
|
||||
});
|
||||
|
||||
self._api.on('notification', function (notification) {
|
||||
if (notification.method !== 'all') {
|
||||
return;
|
||||
}
|
||||
|
||||
var method = (
|
||||
notification.params.type === 'exit' ?
|
||||
'unset' :
|
||||
'set'
|
||||
) + 'Multiple';
|
||||
|
||||
self.objects[method](notification.params.items);
|
||||
});
|
||||
|
||||
resetSession.call(this);
|
||||
|
||||
if (opts.credentials) {
|
||||
this._credentials.resolve(opts.credentials);
|
||||
}
|
||||
|
||||
tryConnect.call(this);
|
||||
}
|
||||
|
||||
Xo.prototype.call = function (method, params) {
|
||||
// Prevent session.*() from being because it may interfere
|
||||
// with this class session management.
|
||||
if (startsWith(method, 'session.')) {
|
||||
return Bluebird.reject(
|
||||
new Error('session.*() methods are disabled from this interface')
|
||||
);
|
||||
}
|
||||
|
||||
return this._session.bind(this).then(function () {
|
||||
return this._api.call(method, params).bind(this).catch(ConnectionError, function () {
|
||||
// Retry automatically.
|
||||
return this.call(method, params);
|
||||
});
|
||||
});
|
||||
};
|
||||
|
||||
Xo.prototype.signIn = function (credentials) {
|
||||
// Ignore the returned promise as it can cause concurrency issues.
|
||||
this.signOut();
|
||||
|
||||
this._credentials.resolve(credentials);
|
||||
|
||||
return this._session;
|
||||
};
|
||||
|
||||
Xo.prototype.signOut = function () {
|
||||
// Already signed in?
|
||||
var promise;
|
||||
if (!this._session.isPending()) {
|
||||
promise = this._api.call('session.signOut');
|
||||
}
|
||||
|
||||
resetSession.call(this);
|
||||
|
||||
signIn.call(this);
|
||||
|
||||
return promise || Bluebird.resolve();
|
||||
};
|
||||
|
||||
exports.Xo = Xo;
|
||||
Loading…
Reference in New Issue
Block a user