diff options
Diffstat (limited to 'actioncable')
25 files changed, 3063 insertions, 483 deletions
diff --git a/actioncable/.babelrc b/actioncable/.babelrc new file mode 100644 index 0000000000..4f0c469c60 --- /dev/null +++ b/actioncable/.babelrc @@ -0,0 +1,8 @@ +{ + "presets": [ + ["env", { "modules": false, "loose": true } ] + ], + "plugins": [ + "external-helpers" + ] +} diff --git a/actioncable/.eslintrc b/actioncable/.eslintrc new file mode 100644 index 0000000000..3d9ecd4bce --- /dev/null +++ b/actioncable/.eslintrc @@ -0,0 +1,19 @@ +{ + "extends": "eslint:recommended", + "rules": { + "semi": ["error", "never"], + "quotes": ["error", "double"], + "no-unused-vars": ["error", { "vars": "all", "args": "none" }] + }, + "plugins": [ + "import" + ], + "env": { + "browser": true, + "es6": true + }, + "parserOptions": { + "ecmaVersion": 6, + "sourceType": "module" + } +} diff --git a/actioncable/.gitignore b/actioncable/.gitignore index f514e58c16..5d5c867f2d 100644 --- a/actioncable/.gitignore +++ b/actioncable/.gitignore @@ -1,2 +1,3 @@ +/app/javascript/action_cable/internal.js /lib/assets/compiled/ /tmp/ diff --git a/actioncable/README.md b/actioncable/README.md index d6893dbab1..a2783d6f45 100644 --- a/actioncable/README.md +++ b/actioncable/README.md @@ -442,7 +442,7 @@ Beware that currently, the cable server will _not_ auto-reload any changes in th We'll get all this abstracted properly when the framework is integrated into Rails. -The WebSocket server doesn't have access to the session, but it has access to the cookies. This can be used when you need to handle authentication. You can see one way of doing that with Devise in this [article](http://www.rubytutorial.io/actioncable-devise-authentication). +The WebSocket server doesn't have access to the session, but it has access to the cookies. This can be used when you need to handle authentication. You can see one way of doing that with Devise in this [article](https://greg.molnar.io/blog/actioncable-devise-authentication/). ## Dependencies diff --git a/actioncable/Rakefile b/actioncable/Rakefile index fb75d14363..52c86eb5d7 100644 --- a/actioncable/Rakefile +++ b/actioncable/Rakefile @@ -7,7 +7,7 @@ require "action_cable" task default: :test -task package: %w( assets:compile assets:verify ) +task :package Rake::TestTask.new do |t| t.libs << "test" @@ -35,42 +35,13 @@ namespace :test do end namespace :assets do - desc "Compile Action Cable assets" - task :compile do - require "blade" - require "sprockets" - require "sprockets/export" - Blade.build - end - - desc "Verify compiled Action Cable assets" - task :verify do - file = "lib/assets/compiled/action_cable.js" - pathname = Pathname.new("#{__dir__}/#{file}") - - print "[verify] #{file} exists " - if pathname.exist? - puts "[OK]" - else - $stderr.puts "[FAIL]" - fail - end + desc "Generate ActionCable::INTERNAL JS module" + task :codegen do + require "json" + require "action_cable" - print "[verify] #{file} is a UMD module " - if /module\.exports.*define\.amd/m.match?(pathname.read) - puts "[OK]" - else - $stderr.puts "[FAIL]" - fail - end - - print "[verify] #{__dir__} can be required as a module " - _, stderr, status = Open3.capture3("node", "--print", "window = {}; require('#{__dir__}');") - if status.success? - puts "[OK]" - else - $stderr.puts "[FAIL]\n#{stderr}" - fail + File.open(File.join(__dir__, "app/javascript/action_cable/internal.js").to_s, "w+") do |file| + file.write("export default #{JSON.generate(ActionCable::INTERNAL)}") end end end diff --git a/actioncable/actioncable.gemspec b/actioncable/actioncable.gemspec index d946d0797f..31c6fb41f2 100644 --- a/actioncable/actioncable.gemspec +++ b/actioncable/actioncable.gemspec @@ -17,7 +17,7 @@ Gem::Specification.new do |s| s.email = ["pratiknaik@gmail.com", "david@loudthinking.com"] s.homepage = "http://rubyonrails.org" - s.files = Dir["CHANGELOG.md", "MIT-LICENSE", "README.md", "lib/**/*"] + s.files = Dir["CHANGELOG.md", "MIT-LICENSE", "README.md", "lib/**/*", "app/assets/javascripts/action_cable.js"] s.require_path = "lib" s.metadata = { @@ -25,6 +25,9 @@ Gem::Specification.new do |s| "changelog_uri" => "https://github.com/rails/rails/blob/v#{version}/actioncable/CHANGELOG.md" } + # NOTE: Please read our dependency guidelines before updating versions: + # https://edgeguides.rubyonrails.org/security.html#dependency-management-and-cves + s.add_dependency "actionpack", version s.add_dependency "nio4r", "~> 2.0" diff --git a/actioncable/app/assets/javascripts/action_cable.coffee.erb b/actioncable/app/assets/javascripts/action_cable.coffee.erb deleted file mode 100644 index e0758dae72..0000000000 --- a/actioncable/app/assets/javascripts/action_cable.coffee.erb +++ /dev/null @@ -1,38 +0,0 @@ -#= export ActionCable -#= require_self -#= require ./action_cable/consumer - -@ActionCable = - INTERNAL: <%= ActionCable::INTERNAL.to_json %> - WebSocket: window.WebSocket - logger: window.console - - createConsumer: (url) -> - url ?= @getConfig("url") ? @INTERNAL.default_mount_path - new ActionCable.Consumer @createWebSocketURL(url) - - getConfig: (name) -> - element = document.head.querySelector("meta[name='action-cable-#{name}']") - element?.getAttribute("content") - - createWebSocketURL: (url) -> - if url and not /^wss?:/i.test(url) - a = document.createElement("a") - a.href = url - # Fix populating Location properties in IE. Otherwise, protocol will be blank. - a.href = a.href - a.protocol = a.protocol.replace("http", "ws") - a.href - else - url - - startDebugging: -> - @debugging = true - - stopDebugging: -> - @debugging = null - - log: (messages...) -> - if @debugging - messages.push(Date.now()) - @logger.log("[ActionCable]", messages...) diff --git a/actioncable/app/assets/javascripts/action_cable.js b/actioncable/app/assets/javascripts/action_cable.js new file mode 100644 index 0000000000..07151b9d25 --- /dev/null +++ b/actioncable/app/assets/javascripts/action_cable.js @@ -0,0 +1,476 @@ +(function(global, factory) { + typeof exports === "object" && typeof module !== "undefined" ? module.exports = factory() : typeof define === "function" && define.amd ? define(factory) : global.ActionCable = factory(); +})(this, function() { + "use strict"; + var INTERNAL = { + message_types: { + welcome: "welcome", + ping: "ping", + confirmation: "confirm_subscription", + rejection: "reject_subscription" + }, + default_mount_path: "/cable", + protocols: [ "actioncable-v1-json", "actioncable-unsupported" ] + }; + var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function(obj) { + return typeof obj; + } : function(obj) { + return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; + }; + var classCallCheck = function(instance, Constructor) { + if (!(instance instanceof Constructor)) { + throw new TypeError("Cannot call a class as a function"); + } + }; + var message_types = INTERNAL.message_types, protocols = INTERNAL.protocols; + var supportedProtocols = protocols.slice(0, protocols.length - 1); + var indexOf = [].indexOf; + var Connection = function() { + function Connection(consumer) { + classCallCheck(this, Connection); + this.open = this.open.bind(this); + this.consumer = consumer; + this.subscriptions = this.consumer.subscriptions; + this.monitor = new ActionCable.ConnectionMonitor(this); + this.disconnected = true; + } + Connection.prototype.send = function send(data) { + if (this.isOpen()) { + this.webSocket.send(JSON.stringify(data)); + return true; + } else { + return false; + } + }; + Connection.prototype.open = function open() { + if (this.isActive()) { + ActionCable.log("Attempted to open WebSocket, but existing socket is " + this.getState()); + return false; + } else { + ActionCable.log("Opening WebSocket, current state is " + this.getState() + ", subprotocols: " + protocols); + if (this.webSocket) { + this.uninstallEventHandlers(); + } + this.webSocket = new ActionCable.WebSocket(this.consumer.url, protocols); + this.installEventHandlers(); + this.monitor.start(); + return true; + } + }; + Connection.prototype.close = function close() { + var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : { + allowReconnect: true + }, allowReconnect = _ref.allowReconnect; + if (!allowReconnect) { + this.monitor.stop(); + } + if (this.isActive()) { + return this.webSocket ? this.webSocket.close() : undefined; + } + }; + Connection.prototype.reopen = function reopen() { + ActionCable.log("Reopening WebSocket, current state is " + this.getState()); + if (this.isActive()) { + try { + return this.close(); + } catch (error) { + ActionCable.log("Failed to reopen WebSocket", error); + } finally { + ActionCable.log("Reopening WebSocket in " + this.constructor.reopenDelay + "ms"); + setTimeout(this.open, this.constructor.reopenDelay); + } + } else { + return this.open(); + } + }; + Connection.prototype.getProtocol = function getProtocol() { + return this.webSocket ? this.webSocket.protocol : undefined; + }; + Connection.prototype.isOpen = function isOpen() { + return this.isState("open"); + }; + Connection.prototype.isActive = function isActive() { + return this.isState("open", "connecting"); + }; + Connection.prototype.isProtocolSupported = function isProtocolSupported() { + return indexOf.call(supportedProtocols, this.getProtocol()) >= 0; + }; + Connection.prototype.isState = function isState() { + for (var _len = arguments.length, states = Array(_len), _key = 0; _key < _len; _key++) { + states[_key] = arguments[_key]; + } + return indexOf.call(states, this.getState()) >= 0; + }; + Connection.prototype.getState = function getState() { + if (this.webSocket) { + for (var state in WebSocket) { + if (WebSocket[state] === this.webSocket.readyState) { + return state.toLowerCase(); + } + } + } + return null; + }; + Connection.prototype.installEventHandlers = function installEventHandlers() { + for (var eventName in this.events) { + var handler = this.events[eventName].bind(this); + this.webSocket["on" + eventName] = handler; + } + }; + Connection.prototype.uninstallEventHandlers = function uninstallEventHandlers() { + for (var eventName in this.events) { + this.webSocket["on" + eventName] = function() {}; + } + }; + return Connection; + }(); + Connection.reopenDelay = 500; + Connection.prototype.events = { + message: function message(event) { + if (!this.isProtocolSupported()) { + return; + } + var _JSON$parse = JSON.parse(event.data), identifier = _JSON$parse.identifier, message = _JSON$parse.message, type = _JSON$parse.type; + switch (type) { + case message_types.welcome: + this.monitor.recordConnect(); + return this.subscriptions.reload(); + + case message_types.ping: + return this.monitor.recordPing(); + + case message_types.confirmation: + return this.subscriptions.notify(identifier, "connected"); + + case message_types.rejection: + return this.subscriptions.reject(identifier); + + default: + return this.subscriptions.notify(identifier, "received", message); + } + }, + open: function open() { + ActionCable.log("WebSocket onopen event, using '" + this.getProtocol() + "' subprotocol"); + this.disconnected = false; + if (!this.isProtocolSupported()) { + ActionCable.log("Protocol is unsupported. Stopping monitor and disconnecting."); + return this.close({ + allowReconnect: false + }); + } + }, + close: function close(event) { + ActionCable.log("WebSocket onclose event"); + if (this.disconnected) { + return; + } + this.disconnected = true; + this.monitor.recordDisconnect(); + return this.subscriptions.notifyAll("disconnected", { + willAttemptReconnect: this.monitor.isRunning() + }); + }, + error: function error() { + ActionCable.log("WebSocket onerror event"); + } + }; + var now = function now() { + return new Date().getTime(); + }; + var secondsSince = function secondsSince(time) { + return (now() - time) / 1e3; + }; + var clamp = function clamp(number, min, max) { + return Math.max(min, Math.min(max, number)); + }; + var ConnectionMonitor = function() { + function ConnectionMonitor(connection) { + classCallCheck(this, ConnectionMonitor); + this.visibilityDidChange = this.visibilityDidChange.bind(this); + this.connection = connection; + this.reconnectAttempts = 0; + } + ConnectionMonitor.prototype.start = function start() { + if (!this.isRunning()) { + this.startedAt = now(); + delete this.stoppedAt; + this.startPolling(); + document.addEventListener("visibilitychange", this.visibilityDidChange); + ActionCable.log("ConnectionMonitor started. pollInterval = " + this.getPollInterval() + " ms"); + } + }; + ConnectionMonitor.prototype.stop = function stop() { + if (this.isRunning()) { + this.stoppedAt = now(); + this.stopPolling(); + document.removeEventListener("visibilitychange", this.visibilityDidChange); + ActionCable.log("ConnectionMonitor stopped"); + } + }; + ConnectionMonitor.prototype.isRunning = function isRunning() { + return this.startedAt && !this.stoppedAt; + }; + ConnectionMonitor.prototype.recordPing = function recordPing() { + this.pingedAt = now(); + }; + ConnectionMonitor.prototype.recordConnect = function recordConnect() { + this.reconnectAttempts = 0; + this.recordPing(); + delete this.disconnectedAt; + ActionCable.log("ConnectionMonitor recorded connect"); + }; + ConnectionMonitor.prototype.recordDisconnect = function recordDisconnect() { + this.disconnectedAt = now(); + ActionCable.log("ConnectionMonitor recorded disconnect"); + }; + ConnectionMonitor.prototype.startPolling = function startPolling() { + this.stopPolling(); + this.poll(); + }; + ConnectionMonitor.prototype.stopPolling = function stopPolling() { + clearTimeout(this.pollTimeout); + }; + ConnectionMonitor.prototype.poll = function poll() { + var _this = this; + this.pollTimeout = setTimeout(function() { + _this.reconnectIfStale(); + _this.poll(); + }, this.getPollInterval()); + }; + ConnectionMonitor.prototype.getPollInterval = function getPollInterval() { + var _constructor$pollInte = this.constructor.pollInterval, min = _constructor$pollInte.min, max = _constructor$pollInte.max, multiplier = _constructor$pollInte.multiplier; + var interval = multiplier * Math.log(this.reconnectAttempts + 1); + return Math.round(clamp(interval, min, max) * 1e3); + }; + ConnectionMonitor.prototype.reconnectIfStale = function reconnectIfStale() { + if (this.connectionIsStale()) { + ActionCable.log("ConnectionMonitor detected stale connection. reconnectAttempts = " + this.reconnectAttempts + ", pollInterval = " + this.getPollInterval() + " ms, time disconnected = " + secondsSince(this.disconnectedAt) + " s, stale threshold = " + this.constructor.staleThreshold + " s"); + this.reconnectAttempts++; + if (this.disconnectedRecently()) { + ActionCable.log("ConnectionMonitor skipping reopening recent disconnect"); + } else { + ActionCable.log("ConnectionMonitor reopening"); + this.connection.reopen(); + } + } + }; + ConnectionMonitor.prototype.connectionIsStale = function connectionIsStale() { + return secondsSince(this.pingedAt ? this.pingedAt : this.startedAt) > this.constructor.staleThreshold; + }; + ConnectionMonitor.prototype.disconnectedRecently = function disconnectedRecently() { + return this.disconnectedAt && secondsSince(this.disconnectedAt) < this.constructor.staleThreshold; + }; + ConnectionMonitor.prototype.visibilityDidChange = function visibilityDidChange() { + var _this2 = this; + if (document.visibilityState === "visible") { + setTimeout(function() { + if (_this2.connectionIsStale() || !_this2.connection.isOpen()) { + ActionCable.log("ConnectionMonitor reopening stale connection on visibilitychange. visbilityState = " + document.visibilityState); + _this2.connection.reopen(); + } + }, 200); + } + }; + return ConnectionMonitor; + }(); + ConnectionMonitor.pollInterval = { + min: 3, + max: 30, + multiplier: 5 + }; + ConnectionMonitor.staleThreshold = 6; + var Consumer = function() { + function Consumer(url) { + classCallCheck(this, Consumer); + this.url = url; + this.subscriptions = new ActionCable.Subscriptions(this); + this.connection = new ActionCable.Connection(this); + } + Consumer.prototype.send = function send(data) { + return this.connection.send(data); + }; + Consumer.prototype.connect = function connect() { + return this.connection.open(); + }; + Consumer.prototype.disconnect = function disconnect() { + return this.connection.close({ + allowReconnect: false + }); + }; + Consumer.prototype.ensureActiveConnection = function ensureActiveConnection() { + if (!this.connection.isActive()) { + return this.connection.open(); + } + }; + return Consumer; + }(); + var extend = function extend(object, properties) { + if (properties != null) { + for (var key in properties) { + var value = properties[key]; + object[key] = value; + } + } + return object; + }; + var Subscription = function() { + function Subscription(consumer) { + var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + var mixin = arguments[2]; + classCallCheck(this, Subscription); + this.consumer = consumer; + this.identifier = JSON.stringify(params); + extend(this, mixin); + } + Subscription.prototype.perform = function perform(action) { + var data = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + data.action = action; + return this.send(data); + }; + Subscription.prototype.send = function send(data) { + return this.consumer.send({ + command: "message", + identifier: this.identifier, + data: JSON.stringify(data) + }); + }; + Subscription.prototype.unsubscribe = function unsubscribe() { + return this.consumer.subscriptions.remove(this); + }; + return Subscription; + }(); + var Subscriptions = function() { + function Subscriptions(consumer) { + classCallCheck(this, Subscriptions); + this.consumer = consumer; + this.subscriptions = []; + } + Subscriptions.prototype.create = function create(channelName, mixin) { + var channel = channelName; + var params = (typeof channel === "undefined" ? "undefined" : _typeof(channel)) === "object" ? channel : { + channel: channel + }; + var subscription = new ActionCable.Subscription(this.consumer, params, mixin); + return this.add(subscription); + }; + Subscriptions.prototype.add = function add(subscription) { + this.subscriptions.push(subscription); + this.consumer.ensureActiveConnection(); + this.notify(subscription, "initialized"); + this.sendCommand(subscription, "subscribe"); + return subscription; + }; + Subscriptions.prototype.remove = function remove(subscription) { + this.forget(subscription); + if (!this.findAll(subscription.identifier).length) { + this.sendCommand(subscription, "unsubscribe"); + } + return subscription; + }; + Subscriptions.prototype.reject = function reject(identifier) { + var _this = this; + return this.findAll(identifier).map(function(subscription) { + _this.forget(subscription); + _this.notify(subscription, "rejected"); + return subscription; + }); + }; + Subscriptions.prototype.forget = function forget(subscription) { + this.subscriptions = this.subscriptions.filter(function(s) { + return s !== subscription; + }); + return subscription; + }; + Subscriptions.prototype.findAll = function findAll(identifier) { + return this.subscriptions.filter(function(s) { + return s.identifier === identifier; + }); + }; + Subscriptions.prototype.reload = function reload() { + var _this2 = this; + return this.subscriptions.map(function(subscription) { + return _this2.sendCommand(subscription, "subscribe"); + }); + }; + Subscriptions.prototype.notifyAll = function notifyAll(callbackName) { + var _this3 = this; + for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + args[_key - 1] = arguments[_key]; + } + return this.subscriptions.map(function(subscription) { + return _this3.notify.apply(_this3, [ subscription, callbackName ].concat(args)); + }); + }; + Subscriptions.prototype.notify = function notify(subscription, callbackName) { + for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) { + args[_key2 - 2] = arguments[_key2]; + } + var subscriptions = void 0; + if (typeof subscription === "string") { + subscriptions = this.findAll(subscription); + } else { + subscriptions = [ subscription ]; + } + return subscriptions.map(function(subscription) { + return typeof subscription[callbackName] === "function" ? subscription[callbackName].apply(subscription, args) : undefined; + }); + }; + Subscriptions.prototype.sendCommand = function sendCommand(subscription, command) { + var identifier = subscription.identifier; + return this.consumer.send({ + command: command, + identifier: identifier + }); + }; + return Subscriptions; + }(); + var ActionCable = { + Connection: Connection, + ConnectionMonitor: ConnectionMonitor, + Consumer: Consumer, + INTERNAL: INTERNAL, + Subscription: Subscription, + Subscriptions: Subscriptions, + WebSocket: window.WebSocket, + logger: window.console, + createConsumer: function createConsumer(url) { + if (url == null) { + var urlConfig = this.getConfig("url"); + url = urlConfig ? urlConfig : this.INTERNAL.default_mount_path; + } + return new Consumer(this.createWebSocketURL(url)); + }, + getConfig: function getConfig(name) { + var element = document.head.querySelector("meta[name='action-cable-" + name + "']"); + return element ? element.getAttribute("content") : undefined; + }, + createWebSocketURL: function createWebSocketURL(url) { + if (url && !/^wss?:/i.test(url)) { + var a = document.createElement("a"); + a.href = url; + a.href = a.href; + a.protocol = a.protocol.replace("http", "ws"); + return a.href; + } else { + return url; + } + }, + startDebugging: function startDebugging() { + this.debugging = true; + }, + stopDebugging: function stopDebugging() { + this.debugging = null; + }, + log: function log() { + if (this.debugging) { + var _logger; + for (var _len = arguments.length, messages = Array(_len), _key = 0; _key < _len; _key++) { + messages[_key] = arguments[_key]; + } + messages.push(Date.now()); + (_logger = this.logger).log.apply(_logger, [ "[ActionCable]" ].concat(messages)); + } + } + }; + return ActionCable; +}); diff --git a/actioncable/app/assets/javascripts/action_cable/connection.coffee b/actioncable/app/assets/javascripts/action_cable/connection.coffee deleted file mode 100644 index 7fd68cad2f..0000000000 --- a/actioncable/app/assets/javascripts/action_cable/connection.coffee +++ /dev/null @@ -1,116 +0,0 @@ -#= require ./connection_monitor - -# Encapsulate the cable connection held by the consumer. This is an internal class not intended for direct user manipulation. - -{message_types, protocols} = ActionCable.INTERNAL -[supportedProtocols..., unsupportedProtocol] = protocols - -class ActionCable.Connection - @reopenDelay: 500 - - constructor: (@consumer) -> - {@subscriptions} = @consumer - @monitor = new ActionCable.ConnectionMonitor this - @disconnected = true - - send: (data) -> - if @isOpen() - @webSocket.send(JSON.stringify(data)) - true - else - false - - open: => - if @isActive() - ActionCable.log("Attempted to open WebSocket, but existing socket is #{@getState()}") - false - else - ActionCable.log("Opening WebSocket, current state is #{@getState()}, subprotocols: #{protocols}") - @uninstallEventHandlers() if @webSocket? - @webSocket = new ActionCable.WebSocket(@consumer.url, protocols) - @installEventHandlers() - @monitor.start() - true - - close: ({allowReconnect} = {allowReconnect: true}) -> - @monitor.stop() unless allowReconnect - @webSocket?.close() if @isActive() - - reopen: -> - ActionCable.log("Reopening WebSocket, current state is #{@getState()}") - if @isActive() - try - @close() - catch error - ActionCable.log("Failed to reopen WebSocket", error) - finally - ActionCable.log("Reopening WebSocket in #{@constructor.reopenDelay}ms") - setTimeout(@open, @constructor.reopenDelay) - else - @open() - - getProtocol: -> - @webSocket?.protocol - - isOpen: -> - @isState("open") - - isActive: -> - @isState("open", "connecting") - - # Private - - isProtocolSupported: -> - @getProtocol() in supportedProtocols - - isState: (states...) -> - @getState() in states - - getState: -> - return state.toLowerCase() for state, value of WebSocket when value is @webSocket?.readyState - null - - installEventHandlers: -> - for eventName of @events - handler = @events[eventName].bind(this) - @webSocket["on#{eventName}"] = handler - return - - uninstallEventHandlers: -> - for eventName of @events - @webSocket["on#{eventName}"] = -> - return - - events: - message: (event) -> - return unless @isProtocolSupported() - {identifier, message, type} = JSON.parse(event.data) - switch type - when message_types.welcome - @monitor.recordConnect() - @subscriptions.reload() - when message_types.ping - @monitor.recordPing() - when message_types.confirmation - @subscriptions.notify(identifier, "connected") - when message_types.rejection - @subscriptions.reject(identifier) - else - @subscriptions.notify(identifier, "received", message) - - open: -> - ActionCable.log("WebSocket onopen event, using '#{@getProtocol()}' subprotocol") - @disconnected = false - if not @isProtocolSupported() - ActionCable.log("Protocol is unsupported. Stopping monitor and disconnecting.") - @close(allowReconnect: false) - - close: (event) -> - ActionCable.log("WebSocket onclose event") - return if @disconnected - @disconnected = true - @monitor.recordDisconnect() - @subscriptions.notifyAll("disconnected", {willAttemptReconnect: @monitor.isRunning()}) - - error: -> - ActionCable.log("WebSocket onerror event") 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)) diff --git a/actioncable/app/assets/javascripts/action_cable/consumer.coffee b/actioncable/app/assets/javascripts/action_cable/consumer.coffee deleted file mode 100644 index 3298be717f..0000000000 --- a/actioncable/app/assets/javascripts/action_cable/consumer.coffee +++ /dev/null @@ -1,46 +0,0 @@ -#= require ./connection -#= require ./subscriptions -#= require ./subscription - -# The ActionCable.Consumer establishes the connection to a server-side Ruby Connection object. Once established, -# the ActionCable.ConnectionMonitor will ensure that its properly maintained through heartbeats and checking for stale updates. -# The Consumer instance is also the gateway to establishing subscriptions to desired channels through the #createSubscription -# method. -# -# The following example shows how this can be setup: -# -# @App = {} -# App.cable = ActionCable.createConsumer "ws://example.com/accounts/1" -# App.appearance = App.cable.subscriptions.create "AppearanceChannel" -# -# For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription. -# -# When a consumer is created, it automatically connects with the server. -# -# To disconnect from the server, call -# -# App.cable.disconnect() -# -# and to restart the connection: -# -# App.cable.connect() -# -# Any channel subscriptions which existed prior to disconnecting will -# automatically resubscribe. -class ActionCable.Consumer - constructor: (@url) -> - @subscriptions = new ActionCable.Subscriptions this - @connection = new ActionCable.Connection this - - send: (data) -> - @connection.send(data) - - connect: -> - @connection.open() - - disconnect: -> - @connection.close(allowReconnect: false) - - ensureActiveConnection: -> - unless @connection.isActive() - @connection.open() diff --git a/actioncable/app/assets/javascripts/action_cable/subscription.coffee b/actioncable/app/assets/javascripts/action_cable/subscription.coffee deleted file mode 100644 index 8e0805a174..0000000000 --- a/actioncable/app/assets/javascripts/action_cable/subscription.coffee +++ /dev/null @@ -1,72 +0,0 @@ -# A new subscription is created through the ActionCable.Subscriptions instance available on the consumer. -# It provides a number of callbacks and a method for calling remote procedure calls on the corresponding -# Channel instance on the server side. -# -# An example demonstrates the basic functionality: -# -# App.appearance = App.cable.subscriptions.create "AppearanceChannel", -# connected: -> -# # Called once the subscription has been successfully completed -# -# disconnected: ({ willAttemptReconnect: boolean }) -> -# # Called when the client has disconnected with the server. -# # The object will have an `willAttemptReconnect` property which -# # says whether the client has the intention of attempting -# # to reconnect. -# -# appear: -> -# @perform 'appear', appearing_on: @appearingOn() -# -# away: -> -# @perform 'away' -# -# appearingOn: -> -# $('main').data 'appearing-on' -# -# The methods #appear and #away forward their intent to the remote AppearanceChannel instance on the server -# by calling the `@perform` method with the first parameter being the action (which maps to AppearanceChannel#appear/away). -# The second parameter is a hash that'll get JSON encoded and made available on the server in the data parameter. -# -# This is how the server component would look: -# -# class AppearanceChannel < ApplicationActionCable::Channel -# def subscribed -# current_user.appear -# end -# -# def unsubscribed -# current_user.disappear -# end -# -# def appear(data) -# current_user.appear on: data['appearing_on'] -# end -# -# def away -# current_user.away -# end -# end -# -# The "AppearanceChannel" name is automatically mapped between the client-side subscription creation and the server-side Ruby class name. -# The AppearanceChannel#appear/away public methods are exposed automatically to client-side invocation through the @perform method. -class ActionCable.Subscription - constructor: (@consumer, params = {}, mixin) -> - @identifier = JSON.stringify(params) - extend(this, mixin) - - # Perform a channel action with the optional data passed as an attribute - perform: (action, data = {}) -> - data.action = action - @send(data) - - send: (data) -> - @consumer.send(command: "message", identifier: @identifier, data: JSON.stringify(data)) - - unsubscribe: -> - @consumer.subscriptions.remove(this) - - extend = (object, properties) -> - if properties? - for key, value of properties - object[key] = value - object diff --git a/actioncable/app/assets/javascripts/action_cable/subscriptions.coffee b/actioncable/app/assets/javascripts/action_cable/subscriptions.coffee deleted file mode 100644 index aa052bf5d8..0000000000 --- a/actioncable/app/assets/javascripts/action_cable/subscriptions.coffee +++ /dev/null @@ -1,66 +0,0 @@ -# Collection class for creating (and internally managing) channel subscriptions. The only method intended to be triggered by the user -# us ActionCable.Subscriptions#create, and it should be called through the consumer like so: -# -# @App = {} -# App.cable = ActionCable.createConsumer "ws://example.com/accounts/1" -# App.appearance = App.cable.subscriptions.create "AppearanceChannel" -# -# For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription. -class ActionCable.Subscriptions - constructor: (@consumer) -> - @subscriptions = [] - - create: (channelName, mixin) -> - channel = channelName - params = if typeof channel is "object" then channel else {channel} - subscription = new ActionCable.Subscription @consumer, params, mixin - @add(subscription) - - # Private - - add: (subscription) -> - @subscriptions.push(subscription) - @consumer.ensureActiveConnection() - @notify(subscription, "initialized") - @sendCommand(subscription, "subscribe") - subscription - - remove: (subscription) -> - @forget(subscription) - unless @findAll(subscription.identifier).length - @sendCommand(subscription, "unsubscribe") - subscription - - reject: (identifier) -> - for subscription in @findAll(identifier) - @forget(subscription) - @notify(subscription, "rejected") - subscription - - forget: (subscription) -> - @subscriptions = (s for s in @subscriptions when s isnt subscription) - subscription - - findAll: (identifier) -> - s for s in @subscriptions when s.identifier is identifier - - reload: -> - for subscription in @subscriptions - @sendCommand(subscription, "subscribe") - - notifyAll: (callbackName, args...) -> - for subscription in @subscriptions - @notify(subscription, callbackName, args...) - - notify: (subscription, callbackName, args...) -> - if typeof subscription is "string" - subscriptions = @findAll(subscription) - else - subscriptions = [subscription] - - for subscription in subscriptions - subscription[callbackName]?(args...) - - sendCommand: (subscription, command) -> - {identifier} = subscription - @consumer.send({command, identifier}) diff --git a/actioncable/app/javascript/action_cable/connection.js b/actioncable/app/javascript/action_cable/connection.js new file mode 100644 index 0000000000..4ad436f2c0 --- /dev/null +++ b/actioncable/app/javascript/action_cable/connection.js @@ -0,0 +1,156 @@ +import ActionCable from "./index" +import INTERNAL from "./internal" + +// Encapsulate the cable connection held by the consumer. This is an internal class not intended for direct user manipulation. + +const {message_types, protocols} = INTERNAL +const supportedProtocols = protocols.slice(0, protocols.length - 1) + +const indexOf = [].indexOf + +class Connection { + constructor(consumer) { + this.open = this.open.bind(this) + this.consumer = consumer + this.subscriptions = this.consumer.subscriptions + this.monitor = new ActionCable.ConnectionMonitor(this) + this.disconnected = true + } + + send(data) { + if (this.isOpen()) { + this.webSocket.send(JSON.stringify(data)) + return true + } else { + return false + } + } + + open() { + if (this.isActive()) { + ActionCable.log(`Attempted to open WebSocket, but existing socket is ${this.getState()}`) + return false + } else { + ActionCable.log(`Opening WebSocket, current state is ${this.getState()}, subprotocols: ${protocols}`) + if (this.webSocket) { this.uninstallEventHandlers() } + this.webSocket = new ActionCable.WebSocket(this.consumer.url, protocols) + this.installEventHandlers() + this.monitor.start() + return true + } + } + + close({allowReconnect} = {allowReconnect: true}) { + if (!allowReconnect) { this.monitor.stop() } + if (this.isActive()) { return (this.webSocket ? this.webSocket.close() : undefined) } + } + + reopen() { + ActionCable.log(`Reopening WebSocket, current state is ${this.getState()}`) + if (this.isActive()) { + try { + return this.close() + } catch (error) { + ActionCable.log("Failed to reopen WebSocket", error) + } + finally { + ActionCable.log(`Reopening WebSocket in ${this.constructor.reopenDelay}ms`) + setTimeout(this.open, this.constructor.reopenDelay) + } + } else { + return this.open() + } + } + + getProtocol() { + return (this.webSocket ? this.webSocket.protocol : undefined) + } + + isOpen() { + return this.isState("open") + } + + isActive() { + return this.isState("open", "connecting") + } + + // Private + + isProtocolSupported() { + return indexOf.call(supportedProtocols, this.getProtocol()) >= 0 + } + + isState(...states) { + return indexOf.call(states, this.getState()) >= 0 + } + + getState() { + if (this.webSocket) { + for (let state in WebSocket) { + if (WebSocket[state] === this.webSocket.readyState) { + return state.toLowerCase() + } + } + } + return null + } + + installEventHandlers() { + for (let eventName in this.events) { + const handler = this.events[eventName].bind(this) + this.webSocket[`on${eventName}`] = handler + } + } + + uninstallEventHandlers() { + for (let eventName in this.events) { + this.webSocket[`on${eventName}`] = function() {} + } + } + +} + +Connection.reopenDelay = 500 + +Connection.prototype.events = { + message(event) { + if (!this.isProtocolSupported()) { return } + const {identifier, message, type} = JSON.parse(event.data) + switch (type) { + case message_types.welcome: + this.monitor.recordConnect() + return this.subscriptions.reload() + case message_types.ping: + return this.monitor.recordPing() + case message_types.confirmation: + return this.subscriptions.notify(identifier, "connected") + case message_types.rejection: + return this.subscriptions.reject(identifier) + default: + return this.subscriptions.notify(identifier, "received", message) + } + }, + + open() { + ActionCable.log(`WebSocket onopen event, using '${this.getProtocol()}' subprotocol`) + this.disconnected = false + if (!this.isProtocolSupported()) { + ActionCable.log("Protocol is unsupported. Stopping monitor and disconnecting.") + return this.close({allowReconnect: false}) + } + }, + + close(event) { + ActionCable.log("WebSocket onclose event") + if (this.disconnected) { return } + this.disconnected = true + this.monitor.recordDisconnect() + return this.subscriptions.notifyAll("disconnected", {willAttemptReconnect: this.monitor.isRunning()}) + }, + + error() { + ActionCable.log("WebSocket onerror event") + } +} + +export default Connection diff --git a/actioncable/app/javascript/action_cable/connection_monitor.js b/actioncable/app/javascript/action_cable/connection_monitor.js new file mode 100644 index 0000000000..cd1e4602d8 --- /dev/null +++ b/actioncable/app/javascript/action_cable/connection_monitor.js @@ -0,0 +1,126 @@ +import ActionCable from "./index" + +// 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. + +const now = () => new Date().getTime() + +const secondsSince = time => (now() - time) / 1000 + +const clamp = (number, min, max) => Math.max(min, Math.min(max, number)) + +class ConnectionMonitor { + constructor(connection) { + this.visibilityDidChange = this.visibilityDidChange.bind(this) + this.connection = connection + this.reconnectAttempts = 0 + } + + start() { + if (!this.isRunning()) { + this.startedAt = now() + delete this.stoppedAt + this.startPolling() + document.addEventListener("visibilitychange", this.visibilityDidChange) + ActionCable.log(`ConnectionMonitor started. pollInterval = ${this.getPollInterval()} ms`) + } + } + + stop() { + if (this.isRunning()) { + this.stoppedAt = now() + this.stopPolling() + document.removeEventListener("visibilitychange", this.visibilityDidChange) + ActionCable.log("ConnectionMonitor stopped") + } + } + + isRunning() { + return this.startedAt && !this.stoppedAt + } + + recordPing() { + this.pingedAt = now() + } + + recordConnect() { + this.reconnectAttempts = 0 + this.recordPing() + delete this.disconnectedAt + ActionCable.log("ConnectionMonitor recorded connect") + } + + recordDisconnect() { + this.disconnectedAt = now() + ActionCable.log("ConnectionMonitor recorded disconnect") + } + + // Private + + startPolling() { + this.stopPolling() + this.poll() + } + + stopPolling() { + clearTimeout(this.pollTimeout) + } + + poll() { + this.pollTimeout = setTimeout(() => { + this.reconnectIfStale() + this.poll() + } + , this.getPollInterval()) + } + + getPollInterval() { + const {min, max, multiplier} = this.constructor.pollInterval + const interval = multiplier * Math.log(this.reconnectAttempts + 1) + return Math.round(clamp(interval, min, max) * 1000) + } + + reconnectIfStale() { + if (this.connectionIsStale()) { + ActionCable.log(`ConnectionMonitor detected stale connection. reconnectAttempts = ${this.reconnectAttempts}, pollInterval = ${this.getPollInterval()} ms, time disconnected = ${secondsSince(this.disconnectedAt)} s, stale threshold = ${this.constructor.staleThreshold} s`) + this.reconnectAttempts++ + if (this.disconnectedRecently()) { + ActionCable.log("ConnectionMonitor skipping reopening recent disconnect") + } else { + ActionCable.log("ConnectionMonitor reopening") + this.connection.reopen() + } + } + } + + connectionIsStale() { + return secondsSince(this.pingedAt ? this.pingedAt : this.startedAt) > this.constructor.staleThreshold + } + + disconnectedRecently() { + return this.disconnectedAt && (secondsSince(this.disconnectedAt) < this.constructor.staleThreshold) + } + + visibilityDidChange() { + if (document.visibilityState === "visible") { + setTimeout(() => { + if (this.connectionIsStale() || !this.connection.isOpen()) { + ActionCable.log(`ConnectionMonitor reopening stale connection on visibilitychange. visbilityState = ${document.visibilityState}`) + this.connection.reopen() + } + } + , 200) + } + } + +} + +ConnectionMonitor.pollInterval = { + min: 3, + max: 30, + multiplier: 5 +} + +ConnectionMonitor.staleThreshold = 6 // Server::Connections::BEAT_INTERVAL * 2 (missed two pings) + +export default ConnectionMonitor diff --git a/actioncable/app/javascript/action_cable/consumer.js b/actioncable/app/javascript/action_cable/consumer.js new file mode 100644 index 0000000000..c484ceebbd --- /dev/null +++ b/actioncable/app/javascript/action_cable/consumer.js @@ -0,0 +1,53 @@ +import ActionCable from "./index" + +// The ActionCable.Consumer establishes the connection to a server-side Ruby Connection object. Once established, +// the ActionCable.ConnectionMonitor will ensure that its properly maintained through heartbeats and checking for stale updates. +// The Consumer instance is also the gateway to establishing subscriptions to desired channels through the #createSubscription +// method. +// +// The following example shows how this can be setup: +// +// App = {} +// App.cable = ActionCable.createConsumer("ws://example.com/accounts/1") +// App.appearance = App.cable.subscriptions.create("AppearanceChannel") +// +// For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription. +// +// When a consumer is created, it automatically connects with the server. +// +// To disconnect from the server, call +// +// App.cable.disconnect() +// +// and to restart the connection: +// +// App.cable.connect() +// +// Any channel subscriptions which existed prior to disconnecting will +// automatically resubscribe. + +export default class Consumer { + constructor(url) { + this.url = url + this.subscriptions = new ActionCable.Subscriptions(this) + this.connection = new ActionCable.Connection(this) + } + + send(data) { + return this.connection.send(data) + } + + connect() { + return this.connection.open() + } + + disconnect() { + return this.connection.close({allowReconnect: false}) + } + + ensureActiveConnection() { + if (!this.connection.isActive()) { + return this.connection.open() + } + } +} diff --git a/actioncable/app/javascript/action_cable/index.js b/actioncable/app/javascript/action_cable/index.js new file mode 100644 index 0000000000..eb0c4844df --- /dev/null +++ b/actioncable/app/javascript/action_cable/index.js @@ -0,0 +1,58 @@ +import Connection from "./connection" +import ConnectionMonitor from "./connection_monitor" +import Consumer from "./consumer" +import INTERNAL from "./internal" +import Subscription from "./subscription" +import Subscriptions from "./subscriptions" + +export default { + Connection, + ConnectionMonitor, + Consumer, + INTERNAL, + Subscription, + Subscriptions, + WebSocket: window.WebSocket, + logger: window.console, + + createConsumer(url) { + if (url == null) { + const urlConfig = this.getConfig("url") + url = (urlConfig ? urlConfig : this.INTERNAL.default_mount_path) + } + return new Consumer(this.createWebSocketURL(url)) + }, + + getConfig(name) { + const element = document.head.querySelector(`meta[name='action-cable-${name}']`) + return (element ? element.getAttribute("content") : undefined) + }, + + createWebSocketURL(url) { + if (url && !/^wss?:/i.test(url)) { + const a = document.createElement("a") + a.href = url + // Fix populating Location properties in IE. Otherwise, protocol will be blank. + a.href = a.href + a.protocol = a.protocol.replace("http", "ws") + return a.href + } else { + return url + } + }, + + startDebugging() { + this.debugging = true + }, + + stopDebugging() { + this.debugging = null + }, + + log(...messages) { + if (this.debugging) { + messages.push(Date.now()) + this.logger.log("[ActionCable]", ...messages) + } + } +} diff --git a/actioncable/app/javascript/action_cable/subscription.js b/actioncable/app/javascript/action_cable/subscription.js new file mode 100644 index 0000000000..7de08f93b3 --- /dev/null +++ b/actioncable/app/javascript/action_cable/subscription.js @@ -0,0 +1,89 @@ +// A new subscription is created through the ActionCable.Subscriptions instance available on the consumer. +// It provides a number of callbacks and a method for calling remote procedure calls on the corresponding +// Channel instance on the server side. +// +// An example demonstrates the basic functionality: +// +// App.appearance = App.cable.subscriptions.create("AppearanceChannel", { +// connected() { +// // Called once the subscription has been successfully completed +// }, +// +// disconnected({ willAttemptReconnect: boolean }) { +// // Called when the client has disconnected with the server. +// // The object will have an `willAttemptReconnect` property which +// // says whether the client has the intention of attempting +// // to reconnect. +// }, +// +// appear() { +// this.perform('appear', {appearing_on: this.appearingOn()}) +// }, +// +// away() { +// this.perform('away') +// }, +// +// appearingOn() { +// $('main').data('appearing-on') +// } +// }) +// +// The methods #appear and #away forward their intent to the remote AppearanceChannel instance on the server +// by calling the `perform` method with the first parameter being the action (which maps to AppearanceChannel#appear/away). +// The second parameter is a hash that'll get JSON encoded and made available on the server in the data parameter. +// +// This is how the server component would look: +// +// class AppearanceChannel < ApplicationActionCable::Channel +// def subscribed +// current_user.appear +// end +// +// def unsubscribed +// current_user.disappear +// end +// +// def appear(data) +// current_user.appear on: data['appearing_on'] +// end +// +// def away +// current_user.away +// end +// end +// +// The "AppearanceChannel" name is automatically mapped between the client-side subscription creation and the server-side Ruby class name. +// The AppearanceChannel#appear/away public methods are exposed automatically to client-side invocation through the perform method. + +const extend = function(object, properties) { + if (properties != null) { + for (let key in properties) { + const value = properties[key] + object[key] = value + } + } + return object +} + +export default class Subscription { + constructor(consumer, params = {}, mixin) { + this.consumer = consumer + this.identifier = JSON.stringify(params) + extend(this, mixin) + } + + // Perform a channel action with the optional data passed as an attribute + perform(action, data = {}) { + data.action = action + return this.send(data) + } + + send(data) { + return this.consumer.send({command: "message", identifier: this.identifier, data: JSON.stringify(data)}) + } + + unsubscribe() { + return this.consumer.subscriptions.remove(this) + } +} diff --git a/actioncable/app/javascript/action_cable/subscriptions.js b/actioncable/app/javascript/action_cable/subscriptions.js new file mode 100644 index 0000000000..712ff50d28 --- /dev/null +++ b/actioncable/app/javascript/action_cable/subscriptions.js @@ -0,0 +1,86 @@ +import ActionCable from "./index" + +// Collection class for creating (and internally managing) channel subscriptions. The only method intended to be triggered by the user +// us ActionCable.Subscriptions#create, and it should be called through the consumer like so: +// +// App = {} +// App.cable = ActionCable.createConsumer("ws://example.com/accounts/1") +// App.appearance = App.cable.subscriptions.create("AppearanceChannel") +// +// For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription. + +export default class Subscriptions { + constructor(consumer) { + this.consumer = consumer + this.subscriptions = [] + } + + create(channelName, mixin) { + const channel = channelName + const params = typeof channel === "object" ? channel : {channel} + const subscription = new ActionCable.Subscription(this.consumer, params, mixin) + return this.add(subscription) + } + + // Private + + add(subscription) { + this.subscriptions.push(subscription) + this.consumer.ensureActiveConnection() + this.notify(subscription, "initialized") + this.sendCommand(subscription, "subscribe") + return subscription + } + + remove(subscription) { + this.forget(subscription) + if (!this.findAll(subscription.identifier).length) { + this.sendCommand(subscription, "unsubscribe") + } + return subscription + } + + reject(identifier) { + return this.findAll(identifier).map((subscription) => { + this.forget(subscription) + this.notify(subscription, "rejected") + return subscription + }) + } + + forget(subscription) { + this.subscriptions = (this.subscriptions.filter((s) => s !== subscription)) + return subscription + } + + findAll(identifier) { + return this.subscriptions.filter((s) => s.identifier === identifier) + } + + reload() { + return this.subscriptions.map((subscription) => + this.sendCommand(subscription, "subscribe")) + } + + notifyAll(callbackName, ...args) { + return this.subscriptions.map((subscription) => + this.notify(subscription, callbackName, ...args)) + } + + notify(subscription, callbackName, ...args) { + let subscriptions + if (typeof subscription === "string") { + subscriptions = this.findAll(subscription) + } else { + subscriptions = [subscription] + } + + return subscriptions.map((subscription) => + (typeof subscription[callbackName] === "function" ? subscription[callbackName](...args) : undefined)) + } + + sendCommand(subscription, command) { + const {identifier} = subscription + return this.consumer.send({command, identifier}) + } +} diff --git a/actioncable/blade.yml b/actioncable/blade.yml index e38e9b2f1d..54d13a2ba2 100644 --- a/actioncable/blade.yml +++ b/actioncable/blade.yml @@ -6,12 +6,6 @@ load_paths: logical_paths: - test.js -build: - logical_paths: - - action_cable.js - path: lib/assets/compiled - clean: true - plugins: sauce_labs: browsers: diff --git a/actioncable/lib/action_cable/connection/authorization.rb b/actioncable/lib/action_cable/connection/authorization.rb index a22179d988..aef3386f71 100644 --- a/actioncable/lib/action_cable/connection/authorization.rb +++ b/actioncable/lib/action_cable/connection/authorization.rb @@ -5,7 +5,7 @@ module ActionCable module Authorization class UnauthorizedError < StandardError; end - # Closes the \WebSocket connection if it is open and returns a 404 "File not Found" response. + # Closes the WebSocket connection if it is open and returns a 404 "File not Found" response. def reject_unauthorized_connection logger.error "An unauthorized connection attempt was rejected" raise UnauthorizedError diff --git a/actioncable/lib/rails/generators/channel/templates/javascript/index.js.tt b/actioncable/lib/rails/generators/channel/templates/javascript/index.js.tt index 5da1ce2dce..0cfcf74919 100644 --- a/actioncable/lib/rails/generators/channel/templates/javascript/index.js.tt +++ b/actioncable/lib/rails/generators/channel/templates/javascript/index.js.tt @@ -1,5 +1,5 @@ -// Load all the channels within this directory and all subdirectories. +// Load all the channels within this directory and all subdirectories. // Channel files must be named *_channel.js. -const channels = require.context('.', true, /\_channel\.js$/) +const channels = require.context('.', true, /_channel\.js$/) channels.keys().forEach(channels) diff --git a/actioncable/package.json b/actioncable/package.json index d9df46043d..5d5105a6d5 100644 --- a/actioncable/package.json +++ b/actioncable/package.json @@ -2,9 +2,9 @@ "name": "actioncable", "version": "6.0.0-alpha", "description": "WebSocket framework for Ruby on Rails.", - "main": "lib/assets/compiled/action_cable.js", + "main": "app/assets/javascripts/action_cable.js", "files": [ - "lib/assets/compiled/*.js" + "app/assets/javascripts/*.js" ], "repository": { "type": "git", @@ -20,5 +20,22 @@ "bugs": { "url": "https://github.com/rails/rails/issues" }, - "homepage": "http://rubyonrails.org/" + "homepage": "http://rubyonrails.org/", + "devDependencies": { + "babel-core": "^6.25.0", + "babel-plugin-external-helpers": "^6.22.0", + "babel-preset-env": "^1.6.0", + "eslint": "^4.3.0", + "eslint-plugin-import": "^2.7.0", + "rollup": "^0.58.2", + "rollup-plugin-babel": "^3.0.4", + "rollup-plugin-commonjs": "^9.1.0", + "rollup-plugin-node-resolve": "^3.3.0", + "rollup-plugin-uglify": "^3.0.0" + }, + "scripts": { + "prebuild": "yarn lint && bundle exec rake assets:codegen", + "build": "rollup --config rollup.config.js", + "lint": "eslint app/javascript" + } } diff --git a/actioncable/rollup.config.js b/actioncable/rollup.config.js new file mode 100644 index 0000000000..03046526aa --- /dev/null +++ b/actioncable/rollup.config.js @@ -0,0 +1,28 @@ +import resolve from "rollup-plugin-node-resolve" +import commonjs from "rollup-plugin-commonjs" +import babel from "rollup-plugin-babel" +import uglify from "rollup-plugin-uglify" + +const uglifyOptions = { + mangle: false, + compress: false, + output: { + beautify: true, + indent_level: 2 + } +} + +export default { + input: "app/javascript/action_cable/index.js", + output: { + file: "app/assets/javascripts/action_cable.js", + format: "umd", + name: "ActionCable" + }, + plugins: [ + resolve(), + commonjs(), + babel(), + uglify(uglifyOptions) + ] +} diff --git a/actioncable/yarn.lock b/actioncable/yarn.lock new file mode 100644 index 0000000000..8b4fcaebd6 --- /dev/null +++ b/actioncable/yarn.lock @@ -0,0 +1,1928 @@ +# THIS IS AN AUTOGENERATED FILE. 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