serviceManager.coffee
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#-------------------------------------------------------------------------------
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#-------------------------------------------------------------------------------
path = require 'path'
fs = require 'fs'
_ = require 'underscore'
utils = require './utils'
Services = {}
#-------------------------------------------------------------------------------
utils.registerClass class ServiceManager
#---------------------------------------------------------------------------
constructor: ->
@services = {}
#---------------------------------------------------------------------------
get: (name) ->
return @services[name] if _.has(@services, name)
null
#---------------------------------------------------------------------------
registerLocalClass: (name) ->
serviceClass = null
try
serviceClass = require "./service/#{name}"
catch e
utils.log "local service class not found: #{name}"
throw e
@services[name] = new serviceClass
#---------------------------------------------------------------------------
registerProxyClass: (name) ->
intf = getServiceInterface(name)
if !intf
utils.exit "proxy service class not found: #{name}"
if intf.name != name
utils.exit "proxy interface '#{intf.name}' loaded when '#{name}' requested"
service = {}
for method in intf.methods
service[method.name] = getMethodProxy(name, method.name)
@services[name] = service
#-------------------------------------------------------------------------------
getMethodProxy = (intfName, methodName) ->
(channels, args...) ->
channels = [channels] if !_.isArray(channels)
for channel in channels
channel.sendMessage(intfName, methodName, args...)
#-------------------------------------------------------------------------------
getServiceInterface = (name) ->
jsonName = "#{name}.json"
fileName = path.join utils.options.staticWebDir, 'interfaces', jsonName
return null if !utils.fileExistsSync(fileName)
contents = fs.readFileSync(fileName, 'utf8')
serviceInterface = JSON.parse(contents)
return serviceInterface.interfaces[0]
#-------------------------------------------------------------------------------
module.exports = new ServiceManager