536 lines
14 KiB
JavaScript
536 lines
14 KiB
JavaScript
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.TransactionManager = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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function EventEmitter() {
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this._events = this._events || {};
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this._maxListeners = this._maxListeners || undefined;
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}
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module.exports = EventEmitter;
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// Backwards-compat with node 0.10.x
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EventEmitter.EventEmitter = EventEmitter;
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EventEmitter.prototype._events = undefined;
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EventEmitter.prototype._maxListeners = undefined;
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// By default EventEmitters will print a warning if more than 10 listeners are
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// added to it. This is a useful default which helps finding memory leaks.
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EventEmitter.defaultMaxListeners = 10;
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// Obviously not all Emitters should be limited to 10. This function allows
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// that to be increased. Set to zero for unlimited.
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EventEmitter.prototype.setMaxListeners = function(n) {
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if (!isNumber(n) || n < 0 || isNaN(n))
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throw TypeError('n must be a positive number');
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this._maxListeners = n;
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return this;
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};
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EventEmitter.prototype.emit = function(type) {
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var er, handler, len, args, i, listeners;
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if (!this._events)
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this._events = {};
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// If there is no 'error' event listener then throw.
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if (type === 'error') {
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if (!this._events.error ||
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(isObject(this._events.error) && !this._events.error.length)) {
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er = arguments[1];
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if (er instanceof Error) {
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throw er; // Unhandled 'error' event
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} else {
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// At least give some kind of context to the user
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var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
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err.context = er;
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throw err;
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}
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}
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}
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handler = this._events[type];
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if (isUndefined(handler))
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return false;
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if (isFunction(handler)) {
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switch (arguments.length) {
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// fast cases
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case 1:
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handler.call(this);
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break;
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case 2:
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handler.call(this, arguments[1]);
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break;
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case 3:
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handler.call(this, arguments[1], arguments[2]);
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break;
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// slower
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default:
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args = Array.prototype.slice.call(arguments, 1);
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handler.apply(this, args);
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}
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} else if (isObject(handler)) {
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args = Array.prototype.slice.call(arguments, 1);
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listeners = handler.slice();
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len = listeners.length;
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for (i = 0; i < len; i++)
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listeners[i].apply(this, args);
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}
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return true;
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};
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EventEmitter.prototype.addListener = function(type, listener) {
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var m;
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if (!isFunction(listener))
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throw TypeError('listener must be a function');
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if (!this._events)
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this._events = {};
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// To avoid recursion in the case that type === "newListener"! Before
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// adding it to the listeners, first emit "newListener".
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if (this._events.newListener)
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this.emit('newListener', type,
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isFunction(listener.listener) ?
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listener.listener : listener);
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if (!this._events[type])
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// Optimize the case of one listener. Don't need the extra array object.
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this._events[type] = listener;
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else if (isObject(this._events[type]))
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// If we've already got an array, just append.
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this._events[type].push(listener);
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else
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// Adding the second element, need to change to array.
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this._events[type] = [this._events[type], listener];
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// Check for listener leak
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if (isObject(this._events[type]) && !this._events[type].warned) {
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if (!isUndefined(this._maxListeners)) {
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m = this._maxListeners;
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} else {
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m = EventEmitter.defaultMaxListeners;
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}
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if (m && m > 0 && this._events[type].length > m) {
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this._events[type].warned = true;
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console.error('(node) warning: possible EventEmitter memory ' +
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'leak detected. %d listeners added. ' +
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'Use emitter.setMaxListeners() to increase limit.',
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this._events[type].length);
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if (typeof console.trace === 'function') {
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// not supported in IE 10
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console.trace();
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}
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}
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}
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return this;
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};
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EventEmitter.prototype.on = EventEmitter.prototype.addListener;
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EventEmitter.prototype.once = function(type, listener) {
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if (!isFunction(listener))
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throw TypeError('listener must be a function');
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var fired = false;
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function g() {
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this.removeListener(type, g);
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if (!fired) {
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fired = true;
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listener.apply(this, arguments);
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}
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}
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g.listener = listener;
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this.on(type, g);
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return this;
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};
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// emits a 'removeListener' event iff the listener was removed
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EventEmitter.prototype.removeListener = function(type, listener) {
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var list, position, length, i;
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if (!isFunction(listener))
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throw TypeError('listener must be a function');
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if (!this._events || !this._events[type])
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return this;
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list = this._events[type];
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length = list.length;
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position = -1;
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if (list === listener ||
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(isFunction(list.listener) && list.listener === listener)) {
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delete this._events[type];
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if (this._events.removeListener)
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this.emit('removeListener', type, listener);
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} else if (isObject(list)) {
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for (i = length; i-- > 0;) {
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if (list[i] === listener ||
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(list[i].listener && list[i].listener === listener)) {
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position = i;
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break;
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}
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}
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if (position < 0)
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return this;
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if (list.length === 1) {
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list.length = 0;
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delete this._events[type];
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} else {
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list.splice(position, 1);
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}
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if (this._events.removeListener)
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this.emit('removeListener', type, listener);
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}
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return this;
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};
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EventEmitter.prototype.removeAllListeners = function(type) {
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var key, listeners;
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if (!this._events)
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return this;
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// not listening for removeListener, no need to emit
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if (!this._events.removeListener) {
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if (arguments.length === 0)
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this._events = {};
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else if (this._events[type])
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delete this._events[type];
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return this;
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}
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// emit removeListener for all listeners on all events
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if (arguments.length === 0) {
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for (key in this._events) {
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if (key === 'removeListener') continue;
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this.removeAllListeners(key);
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}
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this.removeAllListeners('removeListener');
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this._events = {};
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return this;
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}
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listeners = this._events[type];
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if (isFunction(listeners)) {
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this.removeListener(type, listeners);
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} else if (listeners) {
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// LIFO order
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while (listeners.length)
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this.removeListener(type, listeners[listeners.length - 1]);
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}
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delete this._events[type];
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return this;
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};
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EventEmitter.prototype.listeners = function(type) {
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var ret;
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if (!this._events || !this._events[type])
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ret = [];
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else if (isFunction(this._events[type]))
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ret = [this._events[type]];
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else
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ret = this._events[type].slice();
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return ret;
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};
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EventEmitter.prototype.listenerCount = function(type) {
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if (this._events) {
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var evlistener = this._events[type];
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if (isFunction(evlistener))
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return 1;
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else if (evlistener)
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return evlistener.length;
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}
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return 0;
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};
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EventEmitter.listenerCount = function(emitter, type) {
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return emitter.listenerCount(type);
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};
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function isFunction(arg) {
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return typeof arg === 'function';
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}
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function isNumber(arg) {
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return typeof arg === 'number';
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}
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function isObject(arg) {
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return typeof arg === 'object' && arg !== null;
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}
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function isUndefined(arg) {
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return arg === void 0;
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}
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},{}],2:[function(require,module,exports){
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"use strict";
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const EventEmitter = require('events');
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class Namespace extends EventEmitter
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{
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constructor(namespace,tm)
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{
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super();
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this.namespace = namespace;
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this.tm = tm;
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}
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cmd(name,data)
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{
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return this.tm.cmd(name,data,this.namespace);
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}
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event(name,data)
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{
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return this.tm.event(name,data,this.namespace);
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}
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close()
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{
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return this.tm.namespaces.delete(this.namespace);
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}
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};
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class TransactionManager extends EventEmitter
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{
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constructor(transport)
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{
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super();
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this.maxId = 0;
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this.namespaces = new Map();
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this.transactions = new Map();
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this.transport = transport;
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//Message event listener
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this.listener = (msg) => {
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//Process message
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var message = JSON.parse(msg.utf8Data || msg.data);
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//Check type
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switch(message.type)
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{
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case "cmd" :
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//Create command
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const cmd = {
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name : message.name,
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data : message.data,
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namespace : message.namespace,
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accept : (data) => {
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//Send response back
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transport.send(JSON.stringify ({
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type : "response",
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transId : message.transId,
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data : data
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}));
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},
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reject : (data) => {
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//Send response back
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transport.send(JSON.stringify ({
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type : "error",
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transId : message.transId,
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data : data
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}));
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}
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};
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//If it has a namespace
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if (cmd.namespace)
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{
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//Get namespace
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const namespace = this.namespaces.get(cmd.namespace);
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//If we have it
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if (namespace)
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//trigger event only on namespace
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namespace.emit("cmd",cmd);
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else
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//Launch event on main event handler
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this.emit("cmd",cmd);
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} else {
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//Launch event on main event handler
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this.emit("cmd",cmd);
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}
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break;
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case "response":
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{
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//Get transaction
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const transaction = this.transactions.get(message.transId);
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if (!transaction)
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return;
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//delete transacetion
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this.transactions.delete(message.transId);
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//Accept
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transaction.resolve(message.data);
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break;
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}
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case "error":
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{
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//Get transaction
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const transaction = this.transactions.get(message.transId);
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if (!transaction)
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return;
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//delete transacetion
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this.transactions.delete(message.transId);
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//Reject
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transaction.reject(message.data);
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break;
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}
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case "event":
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//Create event
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const event = {
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name : message.name,
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data : message.data,
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namespace : message.namespace,
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};
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//If it has a namespace
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if (event.namespace)
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{
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//Get namespace
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var namespace = this.namespaces.get(event.namespace);
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//If we have it
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if (namespace)
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//trigger event
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namespace.emit("event",event);
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else
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//Launch event on main event handler
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this.emit("event",event);
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} else {
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//Launch event on main event handler
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this.emit("event",event);
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}
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break;
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}
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};
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//Add it
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this.transport.addListener ? this.transport.addListener("message",this.listener) : this.transport.addEventListener("message",this.listener);
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}
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cmd(name,data,namespace)
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{
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return new Promise((resolve,reject) => {
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//Check name is correct
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if (!name || name.length===0)
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throw new Error("Bad command name");
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//Create command
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const cmd = {
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type : "cmd",
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transId : this.maxId++,
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name : name,
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data : data
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};
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//Check namespace
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if (namespace)
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//Add it
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cmd.namespace = namespace;
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//Serialize
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const json = JSON.stringify(cmd);
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//Add callbacks
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cmd.resolve = resolve;
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cmd.reject = reject;
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//Add to map
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this.transactions.set(cmd.transId,cmd);
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try {
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//Send json
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this.transport.send(json);
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} catch (e) {
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//delete transacetion
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this.transactions.delete(cmd.transId);
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//rethrow
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throw e;
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}
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});
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}
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event(name,data,namespace)
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{
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//Check name is correct
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if (!name || name.length===0)
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throw new Error("Bad event name");
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//Create command
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const event = {
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type : "event",
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name : name,
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data : data
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};
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//Check namespace
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if (namespace)
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//Add it
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event.namespace = namespace;
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//Serialize
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const json = JSON.stringify(event);
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//Send json
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return this.transport.send(json);
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}
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namespace(ns)
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{
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//Check if we already have them
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let namespace = this.namespaces.get(ns);
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//If already have it
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if (namespace) return namespace;
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//Create one instead
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namespace = new Namespace(ns,this);
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//Store it
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this.namespaces.set(ns, namespace);
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//ok
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return namespace;
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}
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close()
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{
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//Erase namespaces
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for (const ns of this.namespace.values())
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//terminate it
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ns.close();
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//remove lisnters
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this.transport.removeListener ? this.transport.removeListener("message",this.listener) : this.transport.removeEventListener("message",this.listener);
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}
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};
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module.exports = TransactionManager;
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},{"events":1}]},{},[2])(2)
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}); |