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* as events from \"events\";\nimport * as util from \"util\";\nimport * as async from \"async\";\nimport { channelManager } from './ChannelManager';\nimport { Event } from \"./Event\";\nimport { EventListener } from \"./EventListener\";\nimport { promiseNodeify } from './promise-nodeify';\n\nvar EventEmitter = events.EventEmitter,\n addListenerMethods = [\"addListener\", \"on\", \"once\"],\n copyMethods = [\"removeListener\", \"removeAllListeners\", \"setMaxListeners\", \"listeners\"];\n\nfunction parseEvent(event) {\n var tmp = event.split(\":\");\n return {\n exchange: tmp[0],\n topic: tmp[1]\n };\n}\n\nexport interface EventsListeners {\n [index: string]: EventListener\n}\n\nexport interface EventOptions {\n event: string\n persistent?: boolean\n autoAck?: boolean\n prefetchCount?: number\n}\n\nexport class AMQPEventEmitter {\n runtime: string;\n ee: events.EventEmitter;\n private eventsListeners: EventsListeners;\n\n constructor(runtime) {\n this.runtime = runtime || \"\";\n this.ee = new EventEmitter();\n this.eventsListeners = {};\n\n addListenerMethods.forEach((method) => {\n this[method] = (options, cb, eventSetCb) => {\n if (typeof options === \"string\") {\n options = {\n event: options\n };\n }\n let event = options.event;\n if ([\"newListener\", \"removeListener\"].indexOf(event) !== -1) {\n return this.ee[method].call(this.ee, event, cb);\n }\n // add listener to the event emitter before attaching to queue in order to be ready if messages are received\n // before preListen callback is called\n this.ee[method].call(this.ee, event, cb);\n return this.preListen(options, (err) => {\n if (err) {\n this.ee.removeListener(event, cb);\n }\n if (eventSetCb) {\n eventSetCb(err);\n }\n });\n };\n });\n\n copyMethods.forEach((method) => {\n this[method] = (...args: any[]) => {\n this.ee[method].apply(this.ee, args);\n };\n });\n }\n\n private preListen(options, cb) {\n var event = options.event;\n var eParsed = parseEvent(event);\n\n if (this.eventsListeners[event]) {\n return cb(null);\n }\n\n Object.assign(options, {\n exchange: eParsed.exchange,\n topic: eParsed.topic,\n runtime: this.runtime\n })\n var eventListener = new EventListener(options);\n\n this.eventsListeners[event] = eventListener;\n let promise = eventListener.listen((message, extra) => {\n var content = message.content;\n if (Array.isArray(content) && content.length === 1 && content[0].context && content[0].message) {\n // old formatted message\n content = content[0];\n }\n this.ee.emit.call(this.ee, event, content, extra);\n });\n\n return promiseNodeify(promise, cb);\n }\n\n emit(event, data) {\n var eParsed = parseEvent(event);\n\n var amqpEvent = new Event({\n exchange: eParsed.exchange,\n topic: eParsed.topic\n });\n\n amqpEvent.send(data);\n };\n\n addListener(event: string | EventOptions, listener: Function, cb?: Function) { };\n on(event: string | EventOptions, listener: Function, cb?: Function) { };\n once(event: string | EventOptions, listener: Function, cb?: Function) { };\n removeListener(event: string, listener: Function) { };\n removeAllListeners(event?: string) { };\n setMaxListeners(n: number) { };\n listeners(event: string) { };\n}"]} |