Move actioncable javascript to app/javascript and change .coffee -> .js

- Rename action_cable/*.coffee -> *.js

- Move app/assets/javascripts/* -> app/javascript/*

- Rename action_cable.js.erb -> action_cable/index.js.erb

Renaming the extension to .js is in preparation for converting these
files from coffeescript to ES2015.

Moving the files to app/javascript and putting the entry point in
index.js.erb changes the structure of ActionCable's javascript to match
the structure of ActiveStorage's javascript.

(We are doing the file moving and renaming in a separate commit to
ensure that the git history of the files will be preserved - i.e. git
will track these as file renames rather than unrelated file
additions/deletions. In particular, git blame will still trace back to
the original authorship.)

1 files changed, 0 insertions, 95 deletions

diff --git a/actioncable/app/assets/javascripts/action_cable/connection_monitor.coffee b/actioncable/app/assets/javascripts/action_cable/connection_monitor.coffee
deleted file mode 100644
index 0cc675fa94..0000000000
--- a/actioncable/app/assets/javascripts/action_cable/connection_monitor.coffee
+++ /dev/null
@@ -1,95 +0,0 @@
-# Responsible for ensuring the cable connection is in good health by validating the heartbeat pings sent from the server, and attempting
-# revival reconnections if things go astray. Internal class, not intended for direct user manipulation.
-class ActionCable.ConnectionMonitor
-  @pollInterval:
-    min: 3
-    max: 30
-
-  @staleThreshold: 6 # Server::Connections::BEAT_INTERVAL * 2 (missed two pings)
-
-  constructor: (@connection) ->
-    @reconnectAttempts = 0
-
-  start: ->
-    unless @isRunning()
-      @startedAt = now()
-      delete @stoppedAt
-      @startPolling()
-      document.addEventListener("visibilitychange", @visibilityDidChange)
-      ActionCable.log("ConnectionMonitor started. pollInterval = #{@getPollInterval()} ms")
-
-  stop: ->
-    if @isRunning()
-      @stoppedAt = now()
-      @stopPolling()
-      document.removeEventListener("visibilitychange", @visibilityDidChange)
-      ActionCable.log("ConnectionMonitor stopped")
-
-  isRunning: ->
-    @startedAt? and not @stoppedAt?
-
-  recordPing: ->
-    @pingedAt = now()
-
-  recordConnect: ->
-    @reconnectAttempts = 0
-    @recordPing()
-    delete @disconnectedAt
-    ActionCable.log("ConnectionMonitor recorded connect")
-
-  recordDisconnect: ->
-    @disconnectedAt = now()
-    ActionCable.log("ConnectionMonitor recorded disconnect")
-
-  # Private
-
-  startPolling: ->
-    @stopPolling()
-    @poll()
-
-  stopPolling: ->
-    clearTimeout(@pollTimeout)
-
-  poll: ->
-    @pollTimeout = setTimeout =>
-      @reconnectIfStale()
-      @poll()
-    , @getPollInterval()
-
-  getPollInterval: ->
-    {min, max} = @constructor.pollInterval
-    interval = 5 * Math.log(@reconnectAttempts + 1)
-    Math.round(clamp(interval, min, max) * 1000)
-
-  reconnectIfStale: ->
-    if @connectionIsStale()
-      ActionCable.log("ConnectionMonitor detected stale connection. reconnectAttempts = #{@reconnectAttempts}, pollInterval = #{@getPollInterval()} ms, time disconnected = #{secondsSince(@disconnectedAt)} s, stale threshold = #{@constructor.staleThreshold} s")
-      @reconnectAttempts++
-      if @disconnectedRecently()
-        ActionCable.log("ConnectionMonitor skipping reopening recent disconnect")
-      else
-        ActionCable.log("ConnectionMonitor reopening")
-        @connection.reopen()
-
-  connectionIsStale: ->
-    secondsSince(@pingedAt ? @startedAt) > @constructor.staleThreshold
-
-  disconnectedRecently: ->
-    @disconnectedAt and secondsSince(@disconnectedAt) < @constructor.staleThreshold
-
-  visibilityDidChange: =>
-    if document.visibilityState is "visible"
-      setTimeout =>
-        if @connectionIsStale() or not @connection.isOpen()
-          ActionCable.log("ConnectionMonitor reopening stale connection on visibilitychange. visbilityState = #{document.visibilityState}")
-          @connection.reopen()
-      , 200
-
-  now = ->
-    new Date().getTime()
-
-  secondsSince = (time) ->
-    (now() - time) / 1000
-
-  clamp = (number, min, max) ->
-    Math.max(min, Math.min(max, number))