导入数据库表和音视频demo
This commit is contained in:
536
media-server-demo-node/www/js/transaction-manager.js
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536
media-server-demo-node/www/js/transaction-manager.js
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(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
|
||||
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
||||
// USE OR OTHER DEALINGS IN THE SOFTWARE.
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||||
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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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||||
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EventEmitter.prototype._events = undefined;
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EventEmitter.prototype._maxListeners = undefined;
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||||
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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
|
||||
// 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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|
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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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||||
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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)
|
||||
this._events = {};
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||||
|
||||
// To avoid recursion in the case that type === "newListener"! Before
|
||||
// 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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||||
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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)) {
|
||||
m = this._maxListeners;
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||||
} else {
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||||
m = EventEmitter.defaultMaxListeners;
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||||
}
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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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||||
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||||
return this;
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||||
};
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||||
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||||
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
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||||
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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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||||
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||||
var fired = false;
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||||
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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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||||
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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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||||
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||||
if (position < 0)
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||||
return this;
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||||
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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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||||
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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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||||
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||||
return this;
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||||
};
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||||
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||||
EventEmitter.prototype.removeAllListeners = function(type) {
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||||
var key, listeners;
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||||
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||||
if (!this._events)
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||||
return this;
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||||
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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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||||
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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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||||
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||||
listeners = this._events[type];
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||||
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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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||||
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||||
return this;
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||||
};
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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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||||
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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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||||
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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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||||
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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) {
|
||||
return typeof arg === 'number';
|
||||
}
|
||||
|
||||
function isObject(arg) {
|
||||
return typeof arg === 'object' && arg !== null;
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||||
}
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||||
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||||
function isUndefined(arg) {
|
||||
return arg === void 0;
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||||
}
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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
|
||||
{
|
||||
constructor(namespace,tm)
|
||||
{
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||||
super();
|
||||
this.namespace = namespace;
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||||
this.tm = tm;
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||||
}
|
||||
|
||||
cmd(name,data)
|
||||
{
|
||||
return this.tm.cmd(name,data,this.namespace);
|
||||
}
|
||||
|
||||
event(name,data)
|
||||
{
|
||||
return this.tm.event(name,data,this.namespace);
|
||||
}
|
||||
|
||||
close()
|
||||
{
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||||
return this.tm.namespaces.delete(this.namespace);
|
||||
}
|
||||
};
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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;
|
||||
this.namespaces = new Map();
|
||||
this.transactions = new Map();
|
||||
this.transport = transport;
|
||||
|
||||
//Message event listener
|
||||
this.listener = (msg) => {
|
||||
//Process message
|
||||
var message = JSON.parse(msg.utf8Data || msg.data);
|
||||
|
||||
//Check type
|
||||
switch(message.type)
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||||
{
|
||||
case "cmd" :
|
||||
//Create command
|
||||
const cmd = {
|
||||
name : message.name,
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||||
data : message.data,
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||||
namespace : message.namespace,
|
||||
accept : (data) => {
|
||||
//Send response back
|
||||
transport.send(JSON.stringify ({
|
||||
type : "response",
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||||
transId : message.transId,
|
||||
data : data
|
||||
}));
|
||||
},
|
||||
reject : (data) => {
|
||||
//Send response back
|
||||
transport.send(JSON.stringify ({
|
||||
type : "error",
|
||||
transId : message.transId,
|
||||
data : data
|
||||
}));
|
||||
}
|
||||
};
|
||||
|
||||
//If it has a namespace
|
||||
if (cmd.namespace)
|
||||
{
|
||||
//Get namespace
|
||||
const namespace = this.namespaces.get(cmd.namespace);
|
||||
//If we have it
|
||||
if (namespace)
|
||||
//trigger event only on namespace
|
||||
namespace.emit("cmd",cmd);
|
||||
else
|
||||
//Launch event on main event handler
|
||||
this.emit("cmd",cmd);
|
||||
} else {
|
||||
//Launch event on main event handler
|
||||
this.emit("cmd",cmd);
|
||||
}
|
||||
break;
|
||||
case "response":
|
||||
{
|
||||
//Get transaction
|
||||
const transaction = this.transactions.get(message.transId);
|
||||
if (!transaction)
|
||||
return;
|
||||
//delete transacetion
|
||||
this.transactions.delete(message.transId);
|
||||
//Accept
|
||||
transaction.resolve(message.data);
|
||||
break;
|
||||
}
|
||||
case "error":
|
||||
{
|
||||
//Get transaction
|
||||
const transaction = this.transactions.get(message.transId);
|
||||
if (!transaction)
|
||||
return;
|
||||
//delete transacetion
|
||||
this.transactions.delete(message.transId);
|
||||
//Reject
|
||||
transaction.reject(message.data);
|
||||
break;
|
||||
}
|
||||
case "event":
|
||||
//Create event
|
||||
const event = {
|
||||
name : message.name,
|
||||
data : message.data,
|
||||
namespace : message.namespace,
|
||||
};
|
||||
//If it has a namespace
|
||||
if (event.namespace)
|
||||
{
|
||||
//Get namespace
|
||||
var namespace = this.namespaces.get(event.namespace);
|
||||
//If we have it
|
||||
if (namespace)
|
||||
//trigger event
|
||||
namespace.emit("event",event);
|
||||
else
|
||||
//Launch event on main event handler
|
||||
this.emit("event",event);
|
||||
} else {
|
||||
//Launch event on main event handler
|
||||
this.emit("event",event);
|
||||
}
|
||||
break;
|
||||
}
|
||||
};
|
||||
|
||||
//Add it
|
||||
this.transport.addListener ? this.transport.addListener("message",this.listener) : this.transport.addEventListener("message",this.listener);
|
||||
}
|
||||
|
||||
cmd(name,data,namespace)
|
||||
{
|
||||
return new Promise((resolve,reject) => {
|
||||
//Check name is correct
|
||||
if (!name || name.length===0)
|
||||
throw new Error("Bad command name");
|
||||
|
||||
//Create command
|
||||
const cmd = {
|
||||
type : "cmd",
|
||||
transId : this.maxId++,
|
||||
name : name,
|
||||
data : data
|
||||
};
|
||||
//Check namespace
|
||||
if (namespace)
|
||||
//Add it
|
||||
cmd.namespace = namespace;
|
||||
//Serialize
|
||||
const json = JSON.stringify(cmd);
|
||||
//Add callbacks
|
||||
cmd.resolve = resolve;
|
||||
cmd.reject = reject;
|
||||
//Add to map
|
||||
this.transactions.set(cmd.transId,cmd);
|
||||
|
||||
try {
|
||||
//Send json
|
||||
this.transport.send(json);
|
||||
} catch (e) {
|
||||
//delete transacetion
|
||||
this.transactions.delete(cmd.transId);
|
||||
//rethrow
|
||||
throw e;
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
event(name,data,namespace)
|
||||
{
|
||||
//Check name is correct
|
||||
if (!name || name.length===0)
|
||||
throw new Error("Bad event name");
|
||||
|
||||
//Create command
|
||||
const event = {
|
||||
type : "event",
|
||||
name : name,
|
||||
data : data
|
||||
};
|
||||
//Check namespace
|
||||
if (namespace)
|
||||
//Add it
|
||||
event.namespace = namespace;
|
||||
//Serialize
|
||||
const json = JSON.stringify(event);
|
||||
//Send json
|
||||
return this.transport.send(json);
|
||||
}
|
||||
|
||||
namespace(ns)
|
||||
{
|
||||
//Check if we already have them
|
||||
let namespace = this.namespaces.get(ns);
|
||||
//If already have it
|
||||
if (namespace) return namespace;
|
||||
//Create one instead
|
||||
namespace = new Namespace(ns,this);
|
||||
//Store it
|
||||
this.namespaces.set(ns, namespace);
|
||||
//ok
|
||||
return namespace;
|
||||
|
||||
}
|
||||
|
||||
close()
|
||||
{
|
||||
//Erase namespaces
|
||||
for (const ns of this.namespace.values())
|
||||
//terminate it
|
||||
ns.close();
|
||||
//remove lisnters
|
||||
this.transport.removeListener ? this.transport.removeListener("message",this.listener) : this.transport.removeEventListener("message",this.listener);
|
||||
}
|
||||
};
|
||||
|
||||
module.exports = TransactionManager;
|
||||
},{"events":1}]},{},[2])(2)
|
||||
});
|
||||
Reference in New Issue
Block a user