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-rw-r--r--lib/assets/javascripts/cable.js.coffee134
1 files changed, 10 insertions, 124 deletions
diff --git a/lib/assets/javascripts/cable.js.coffee b/lib/assets/javascripts/cable.js.coffee
index 9fc269f994..4c93f8f062 100644
--- a/lib/assets/javascripts/cable.js.coffee
+++ b/lib/assets/javascripts/cable.js.coffee
@@ -1,134 +1,20 @@
#= require_self
-#= require_tree .
+#= require cable/subscriber_manager
+#= require cable/connection
+#= require cable/channel
class @Cable
- MAX_CONNECTION_INTERVAL: 5 * 1000
- PING_STALE_INTERVAL: 8
-
- constructor: (@cableUrl) ->
- @subscribers = {}
- @resetPingTime()
- @resetConnectionAttemptsCount()
- @connect()
-
- connect: ->
- @connection = @createConnection()
-
- createConnection: ->
- connection = new WebSocket(@cableUrl)
- connection.onmessage = @onMessage
- connection.onopen = @onConnect
- connection.onclose = @onClose
- connection.onerror = @onError
- connection
+ constructor: (@url) ->
+ @subscribers = new Cable.SubscriberManager this
+ @connection = new Cable.Connection this
createChannel: (channelName, mixin) ->
channel = channelName
params = if typeof channel is "object" then channel else {channel}
new Cable.Channel this, params, mixin
- isConnected: =>
- @connection?.readyState is 1
-
- sendMessage: (identifier, data) =>
- if @isConnected()
- @connection.send JSON.stringify { command: 'message', identifier: identifier, data: data }
-
- onMessage: (message) =>
- data = JSON.parse message.data
-
- if data.identifier is '_ping'
- @pingReceived(data.message)
- else
- @subscribers[data.identifier]?.onMessage?(data.message)
-
- onConnect: =>
- @startWaitingForPing()
- @resetConnectionAttemptsCount()
-
- for identifier, subscriber of @subscribers
- @subscribeOnServer(identifier)
- subscriber.onConnect?()
-
- onClose: =>
- @reconnect()
-
- onError: =>
- @reconnect()
-
- disconnect: ->
- @removeExistingConnection()
- @resetPingTime()
- for identifier, subscriber of @subscribers
- subscriber.onDisconnect?()
-
- reconnect: ->
- @disconnect()
-
- setTimeout =>
- @incrementConnectionAttemptsCount()
- @connect()
- , @generateReconnectInterval()
-
- removeExistingConnection: =>
- if @connection?
- @clearPingWaitTimeout()
-
- @connection.onclose = -> # no-op
- @connection.onerror = -> # no-op
- @connection.close()
- @connection = null
-
- resetConnectionAttemptsCount: =>
- @connectionAttempts = 1
-
- incrementConnectionAttemptsCount: =>
- @connectionAttempts += 1
-
- generateReconnectInterval: () ->
- interval = (Math.pow(2, @connectionAttempts) - 1) * 1000
- if interval > @MAX_CONNECTION_INTERVAL then @MAX_CONNECTION_INTERVAL else interval
-
- startWaitingForPing: =>
- @clearPingWaitTimeout()
-
- @waitForPingTimeout = setTimeout =>
- console.log "Ping took too long to arrive. Reconnecting.."
- @reconnect()
- , @PING_STALE_INTERVAL * 1000
-
- clearPingWaitTimeout: =>
- clearTimeout(@waitForPingTimeout)
-
- resetPingTime: =>
- @lastPingTime = null
-
- giveUp: =>
- # Show an error message
-
- subscribe: (identifier, subscriber) =>
- @subscribers[identifier] = subscriber
-
- if @isConnected()
- @subscribeOnServer(identifier)
- subscriber.onConnect?()
-
- unsubscribe: (identifier) =>
- @unsubscribeOnServer(identifier)
- delete @subscribers[identifier]
-
- subscribeOnServer: (identifier) =>
- if @isConnected()
- @connection.send JSON.stringify { command: 'subscribe', identifier: identifier }
-
- unsubscribeOnServer: (identifier) =>
- if @isConnected()
- @connection.send JSON.stringify { command: 'unsubscribe', identifier: identifier }
+ sendMessage: (identifier, data) ->
+ @sendCommand(identifier, "message", data)
- pingReceived: (timestamp) =>
- if @lastPingTime? and (timestamp - @lastPingTime) > @PING_STALE_INTERVAL
- console.log "Websocket connection is stale. Reconnecting.."
- @reconnect()
- else
- @startWaitingForPing()
- @lastPingTime = timestamp
+ sendCommand: (identifier, command, data) ->
+ @connection.send({identifier, command, data})