119 lines
4.1 KiB
CoffeeScript
119 lines
4.1 KiB
CoffeeScript
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#-------------------------------------------------------------------------------
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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#-------------------------------------------------------------------------------
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_ = require 'underscore'
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utils = require './utils'
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channelManager = require './channelManager'
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messageHandler = require './messageHandler'
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MessageQueue = require './MessageQueue'
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AnonymousId = 'anonymous'
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#-------------------------------------------------------------------------------
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module.exports = utils.registerClass class Channel
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#---------------------------------------------------------------------------
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constructor: (@pathPrefix, @id, @remoteAddress, @isClient) ->
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prefix = if @isClient then 'c-' else 't-'
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@name = "#{prefix}#{utils.getNextSequenceNumber()}"
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@messageQueue = new MessageQueue
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@isClosed = false
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@connections = []
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@isTarget = !@isClient
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@readTimeout = utils.options.readTimeout * 1000
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@id = AnonymousId if !@id
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@description =
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channel: @name
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id: @id
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hostName: @remoteAddress
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remoteAddress: @remoteAddress
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@updateLastRead()
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channelManager.created @
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#---------------------------------------------------------------------------
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close: () ->
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return if @isClosed
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channelManager.destroyed @
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@isClosed = true
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@messageQueue.shutdown()
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#---------------------------------------------------------------------------
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sendCallback: (intfName, callbackId, args...) ->
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return if !callbackId
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args.unshift callbackId
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@sendMessage intfName, 'sendCallback', args...
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#---------------------------------------------------------------------------
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sendMessage: (intfName, method, args...) ->
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message = genJSON
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interface: intfName
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method: method
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args: args
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@messageQueue.push message
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#---------------------------------------------------------------------------
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handleMessages: (messages) ->
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for message in messages
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message = parseJSON(message)
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continue if !message
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messageHandler.handleMessage @, message
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#---------------------------------------------------------------------------
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getMessages: (callback) ->
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@updateLastRead()
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return callback.call(null, null) if @isClosed
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@messageQueue.pullAll @readTimeout, callback
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#---------------------------------------------------------------------------
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updateLastRead: () ->
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@lastRead = (new Date).valueOf()
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#---------------------------------------------------------------------------
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toString: () ->
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connections = _.map(@connections, (val) -> val.name).join(',')
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"Channel(#{@name}, closed:#{@isClosed}, connections:[#{connections}])"
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#-------------------------------------------------------------------------------
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parseJSON = (message) ->
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try
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return JSON.parse(message)
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catch e
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return null
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#-------------------------------------------------------------------------------
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genJSON = (message) ->
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try
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return JSON.stringify(message)
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catch e
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return null
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