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## Rails 5.1.6.1 (November 27, 2018) ##
* No changes.
## Rails 5.1.6 (March 29, 2018) ##
* No changes.
## Rails 5.1.5 (February 14, 2018) ##
* Support redis-rb 4.0.
*Jeremy Daer*
## Rails 5.1.4 (September 07, 2017) ##
* No changes.
## Rails 5.1.4.rc1 (August 24, 2017) ##
* No changes.
## Rails 5.1.3 (August 03, 2017) ##
* No changes.
## Rails 5.1.3.rc3 (July 31, 2017) ##
* No changes.
## Rails 5.1.3.rc2 (July 25, 2017) ##
* No changes.
## Rails 5.1.3.rc1 (July 19, 2017) ##
* No changes.
## Rails 5.1.2 (June 26, 2017) ##
* No changes.
## Rails 5.1.1 (May 12, 2017) ##
* No changes.
## Rails 5.1.0 (April 27, 2017) ##
* ActionCable socket errors are now logged to the console
Previously any socket errors were ignored and this made it hard to diagnose socket issues (e.g. as discussed in #28362).
*Edward Poot*
* Redis subscription adapters now support `channel_prefix` option in `cable.yml`
Avoids channel name collisions when multiple apps use the same Redis server.
*Chad Ingram*
* Permit same-origin connections by default.
Added new option `config.action_cable.allow_same_origin_as_host = false`
to disable this behaviour.
*Dávid Halász*, *Matthew Draper*
* Prevent race where the client could receive and act upon a
subscription confirmation before the channel's `subscribed` method
completed.
Fixes #25381.
*Vladimir Dementyev*
* Buffer now writes to WebSocket connections, to avoid blocking threads
that could be doing more useful things.
*Matthew Draper*, *Tinco Andringa*
* Protect against concurrent writes to a WebSocket connection from
multiple threads; the underlying OS write is not always threadsafe.
*Tinco Andringa*
* Add `ActiveSupport::Notifications` hook to `Broadcaster#broadcast`.
*Matthew Wear*
* Close hijacked socket when connection is shut down.
Fixes #25613.
*Tinco Andringa*
Please check [5-0-stable](https://github.com/rails/rails/blob/5-0-stable/actioncable/CHANGELOG.md) for previous changes.

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Copyright (c) 2015-2017 Basecamp, LLC
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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# Action Cable – Integrated WebSockets for Rails
Action Cable seamlessly integrates WebSockets with the rest of your Rails application.
It allows for real-time features to be written in Ruby in the same style
and form as the rest of your Rails application, while still being performant
and scalable. It's a full-stack offering that provides both a client-side
JavaScript framework and a server-side Ruby framework. You have access to your full
domain model written with Active Record or your ORM of choice.
## Terminology
A single Action Cable server can handle multiple connection instances. It has one
connection instance per WebSocket connection. A single user may have multiple
WebSockets open to your application if they use multiple browser tabs or devices.
The client of a WebSocket connection is called the consumer.
Each consumer can in turn subscribe to multiple cable channels. Each channel encapsulates
a logical unit of work, similar to what a controller does in a regular MVC setup. For example,
you could have a `ChatChannel` and an `AppearancesChannel`, and a consumer could be subscribed to either
or to both of these channels. At the very least, a consumer should be subscribed to one channel.
When the consumer is subscribed to a channel, they act as a subscriber. The connection between
the subscriber and the channel is, surprise-surprise, called a subscription. A consumer
can act as a subscriber to a given channel any number of times. For example, a consumer
could subscribe to multiple chat rooms at the same time. (And remember that a physical user may
have multiple consumers, one per tab/device open to your connection).
Each channel can then again be streaming zero or more broadcastings. A broadcasting is a
pubsub link where anything transmitted by the broadcaster is sent directly to the channel
subscribers who are streaming that named broadcasting.
As you can see, this is a fairly deep architectural stack. There's a lot of new terminology
to identify the new pieces, and on top of that, you're dealing with both client and server side
reflections of each unit.
## Examples
### A full-stack example
The first thing you must do is define your `ApplicationCable::Connection` class in Ruby. This
is the place where you authorize the incoming connection, and proceed to establish it,
if all is well. Here's the simplest example starting with the server-side connection class:
```ruby
# app/channels/application_cable/connection.rb
module ApplicationCable
class Connection < ActionCable::Connection::Base
identified_by :current_user
def connect
self.current_user = find_verified_user
end
private
def find_verified_user
if verified_user = User.find_by(id: cookies.signed[:user_id])
verified_user
else
reject_unauthorized_connection
end
end
end
end
```
Here `identified_by` is a connection identifier that can be used to find the specific connection again or later.
Note that anything marked as an identifier will automatically create a delegate by the same name on any channel instances created off the connection.
This relies on the fact that you will already have handled authentication of the user, and
that a successful authentication sets a signed cookie with the `user_id`. This cookie is then
automatically sent to the connection instance when a new connection is attempted, and you
use that to set the `current_user`. By identifying the connection by this same current_user,
you're also ensuring that you can later retrieve all open connections by a given user (and
potentially disconnect them all if the user is deleted or deauthorized).
Next, you should define your `ApplicationCable::Channel` class in Ruby. This is the place where you put
shared logic between your channels.
```ruby
# app/channels/application_cable/channel.rb
module ApplicationCable
class Channel < ActionCable::Channel::Base
end
end
```
The client-side needs to setup a consumer instance of this connection. That's done like so:
```js
// app/assets/javascripts/cable.js
//= require action_cable
//= require_self
//= require_tree ./channels
(function() {
this.App || (this.App = {});
App.cable = ActionCable.createConsumer("ws://cable.example.com");
}).call(this);
```
The `ws://cable.example.com` address must point to your Action Cable server(s), and it
must share a cookie namespace with the rest of the application (which may live under http://example.com).
This ensures that the signed cookie will be correctly sent.
That's all you need to establish the connection! But of course, this isn't very useful in
itself. This just gives you the plumbing. To make stuff happen, you need content. That content
is defined by declaring channels on the server and allowing the consumer to subscribe to them.
### Channel example 1: User appearances
Here's a simple example of a channel that tracks whether a user is online or not, and also what page they are currently on.
(This is useful for creating presence features like showing a green dot next to a user's name if they're online).
First you declare the server-side channel:
```ruby
# app/channels/appearance_channel.rb
class AppearanceChannel < ApplicationCable::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 `#subscribed` callback is invoked when, as we'll show below, a client-side subscription is initiated. In this case,
we take that opportunity to say "the current user has indeed appeared". That appear/disappear API could be backed by
Redis or a database or whatever else. Here's what the client-side of that looks like:
```coffeescript
# app/assets/javascripts/cable/subscriptions/appearance.coffee
App.cable.subscriptions.create "AppearanceChannel",
# Called when the subscription is ready for use on the server
connected: ->
@install()
@appear()
# Called when the WebSocket connection is closed
disconnected: ->
@uninstall()
# Called when the subscription is rejected by the server
rejected: ->
@uninstall()
appear: ->
# Calls `AppearanceChannel#appear(data)` on the server
@perform("appear", appearing_on: $("main").data("appearing-on"))
away: ->
# Calls `AppearanceChannel#away` on the server
@perform("away")
buttonSelector = "[data-behavior~=appear_away]"
install: ->
$(document).on "turbolinks:load.appearance", =>
@appear()
$(document).on "click.appearance", buttonSelector, =>
@away()
false
$(buttonSelector).show()
uninstall: ->
$(document).off(".appearance")
$(buttonSelector).hide()
```
Simply calling `App.cable.subscriptions.create` will setup the subscription, which will call `AppearanceChannel#subscribed`,
which in turn is linked to the original `App.cable` -> `ApplicationCable::Connection` instances.
Next, we link the client-side `appear` method to `AppearanceChannel#appear(data)`. This is possible because the server-side
channel instance will automatically expose the public methods declared on the class (minus the callbacks), so that these
can be reached as remote procedure calls via a subscription's `perform` method.
### Channel example 2: Receiving new web notifications
The appearance example was all about exposing server functionality to client-side invocation over the WebSocket connection.
But the great thing about WebSockets is that it's a two-way street. So now let's show an example where the server invokes
an action on the client.
This is a web notification channel that allows you to trigger client-side web notifications when you broadcast to the right
streams:
```ruby
# app/channels/web_notifications_channel.rb
class WebNotificationsChannel < ApplicationCable::Channel
def subscribed
stream_from "web_notifications_#{current_user.id}"
end
end
```
```coffeescript
# Client-side, which assumes you've already requested the right to send web notifications
App.cable.subscriptions.create "WebNotificationsChannel",
received: (data) ->
new Notification data["title"], body: data["body"]
```
```ruby
# Somewhere in your app this is called, perhaps from a NewCommentJob
ActionCable.server.broadcast \
"web_notifications_#{current_user.id}", { title: 'New things!', body: 'All the news that is fit to print' }
```
The `ActionCable.server.broadcast` call places a message in the Action Cable pubsub queue under a separate broadcasting name for each user. For a user with an ID of 1, the broadcasting name would be `web_notifications_1`.
The channel has been instructed to stream everything that arrives at `web_notifications_1` directly to the client by invoking the
`#received(data)` callback. The data is the hash sent as the second parameter to the server-side broadcast call, JSON encoded for the trip
across the wire, and unpacked for the data argument arriving to `#received`.
### Passing Parameters to Channel
You can pass parameters from the client side to the server side when creating a subscription. For example:
```ruby
# app/channels/chat_channel.rb
class ChatChannel < ApplicationCable::Channel
def subscribed
stream_from "chat_#{params[:room]}"
end
end
```
If you pass an object as the first argument to `subscriptions.create`, that object will become the params hash in your cable channel. The keyword `channel` is required.
```coffeescript
# Client-side, which assumes you've already requested the right to send web notifications
App.cable.subscriptions.create { channel: "ChatChannel", room: "Best Room" },
received: (data) ->
@appendLine(data)
appendLine: (data) ->
html = @createLine(data)
$("[data-chat-room='Best Room']").append(html)
createLine: (data) ->
"""
<article class="chat-line">
<span class="speaker">#{data["sent_by"]}</span>
<span class="body">#{data["body"]}</span>
</article>
"""
```
```ruby
# Somewhere in your app this is called, perhaps from a NewCommentJob
ActionCable.server.broadcast \
"chat_#{room}", { sent_by: 'Paul', body: 'This is a cool chat app.' }
```
### Rebroadcasting message
A common use case is to rebroadcast a message sent by one client to any other connected clients.
```ruby
# app/channels/chat_channel.rb
class ChatChannel < ApplicationCable::Channel
def subscribed
stream_from "chat_#{params[:room]}"
end
def receive(data)
ActionCable.server.broadcast "chat_#{params[:room]}", data
end
end
```
```coffeescript
# Client-side, which assumes you've already requested the right to send web notifications
App.chatChannel = App.cable.subscriptions.create { channel: "ChatChannel", room: "Best Room" },
received: (data) ->
# data => { sent_by: "Paul", body: "This is a cool chat app." }
App.chatChannel.send({ sent_by: "Paul", body: "This is a cool chat app." })
```
The rebroadcast will be received by all connected clients, _including_ the client that sent the message. Note that params are the same as they were when you subscribed to the channel.
### More complete examples
See the [rails/actioncable-examples](https://github.com/rails/actioncable-examples) repository for a full example of how to setup Action Cable in a Rails app, and how to add channels.
## Configuration
Action Cable has three required configurations: a subscription adapter, allowed request origins, and the cable server URL (which can optionally be set on the client side).
### Redis
By default, `ActionCable::Server::Base` will look for a configuration file in `Rails.root.join('config/cable.yml')`.
This file must specify an adapter and a URL for each Rails environment. It may use the following format:
```yaml
production: &production
adapter: redis
url: redis://10.10.3.153:6381
development: &development
adapter: redis
url: redis://localhost:6379
test: *development
```
You can also change the location of the Action Cable config file in a Rails initializer with something like:
```ruby
Rails.application.paths.add "config/cable", with: "somewhere/else/cable.yml"
```
### Allowed Request Origins
Action Cable will only accept requests from specific origins.
By default, only an origin matching the cable server itself will be permitted.
Additional origins can be specified using strings or regular expressions, provided in an array.
```ruby
Rails.application.config.action_cable.allowed_request_origins = ['http://rubyonrails.com', /http:\/\/ruby.*/]
```
When running in the development environment, this defaults to "http://localhost:3000".
To disable protection and allow requests from any origin:
```ruby
Rails.application.config.action_cable.disable_request_forgery_protection = true
```
To disable automatic access for same-origin requests, and strictly allow
only the configured origins:
```ruby
Rails.application.config.action_cable.allow_same_origin_as_host = false
```
### Consumer Configuration
Once you have decided how to run your cable server (see below), you must provide the server URL (or path) to your client-side setup.
There are two ways you can do this.
The first is to simply pass it in when creating your consumer. For a standalone server,
this would be something like: `App.cable = ActionCable.createConsumer("ws://example.com:28080")`, and for an in-app server,
something like: `App.cable = ActionCable.createConsumer("/cable")`.
The second option is to pass the server URL through the `action_cable_meta_tag` in your layout.
This uses a URL or path typically set via `config.action_cable.url` in the environment configuration files, or defaults to "/cable".
This method is especially useful if your WebSocket URL might change between environments. If you host your production server via https, you will need to use the wss scheme
for your Action Cable server, but development might remain http and use the ws scheme. You might use localhost in development and your
domain in production.
In any case, to vary the WebSocket URL between environments, add the following configuration to each environment:
```ruby
config.action_cable.url = "ws://example.com:28080"
```
Then add the following line to your layout before your JavaScript tag:
```erb
<%= action_cable_meta_tag %>
```
And finally, create your consumer like so:
```coffeescript
App.cable = ActionCable.createConsumer()
```
### Other Configurations
The other common option to configure is the log tags applied to the per-connection logger. Here's an example that uses the user account id if available, else "no-account" while tagging:
```ruby
config.action_cable.log_tags = [
-> request { request.env['user_account_id'] || "no-account" },
:action_cable,
-> request { request.uuid }
]
```
For a full list of all configuration options, see the `ActionCable::Server::Configuration` class.
Also note that your server must provide at least the same number of database connections as you have workers. The default worker pool is set to 4, so that means you have to make at least that available. You can change that in `config/database.yml` through the `pool` attribute.
## Running the cable server
### Standalone
The cable server(s) is separated from your normal application server. It's still a Rack application, but it is its own Rack
application. The recommended basic setup is as follows:
```ruby
# cable/config.ru
require ::File.expand_path('../../config/environment', __FILE__)
Rails.application.eager_load!
run ActionCable.server
```
Then you start the server using a binstub in bin/cable ala:
```sh
#!/bin/bash
bundle exec puma -p 28080 cable/config.ru
```
The above will start a cable server on port 28080.
### In app
If you are using a server that supports the [Rack socket hijacking API](http://www.rubydoc.info/github/rack/rack/file/SPEC#Hijacking), Action Cable can run alongside your Rails application. For example, to listen for WebSocket requests on `/websocket`, specify that path to `config.action_cable.mount_path`:
```ruby
# config/application.rb
class Application < Rails::Application
config.action_cable.mount_path = '/websocket'
end
```
For every instance of your server you create and for every worker your server spawns, you will also have a new instance of Action Cable, but the use of Redis keeps messages synced across connections.
### Notes
Beware that currently, the cable server will _not_ auto-reload any changes in the framework. As we've discussed, long-running cable connections mean long-running objects. We don't yet have a way of reloading the classes of those objects in a safe manner. So when you change your channels, or the model your channels use, you must restart the cable server.
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).
## Dependencies
Action Cable provides a subscription adapter interface to process its pubsub internals. By default, asynchronous, inline, PostgreSQL, evented Redis, and non-evented Redis adapters are included. The default adapter in new Rails applications is the asynchronous (`async`) adapter. To create your own adapter, you can look at `ActionCable::SubscriptionAdapter::Base` for all methods that must be implemented, and any of the adapters included within Action Cable as example implementations.
The Ruby side of things is built on top of [websocket-driver](https://github.com/faye/websocket-driver-ruby), [nio4r](https://github.com/celluloid/nio4r), and [concurrent-ruby](https://github.com/ruby-concurrency/concurrent-ruby).
## Deployment
Action Cable is powered by a combination of WebSockets and threads. All of the
connection management is handled internally by utilizing Ruby’s native thread
support, which means you can use all your regular Rails models with no problems
as long as you haven’t committed any thread-safety sins.
The Action Cable server does _not_ need to be a multi-threaded application server.
This is because Action Cable uses the [Rack socket hijacking API](http://www.rubydoc.info/github/rack/rack/file/SPEC#Hijacking)
to take over control of connections from the application server. Action Cable
then manages connections internally, in a multithreaded manner, regardless of
whether the application server is multi-threaded or not. So Action Cable works
with all the popular application servers -- Unicorn, Puma and Passenger.
Action Cable does not work with WEBrick, because WEBrick does not support the
Rack socket hijacking API.
## Frontend assets
Action Cable's frontend assets are distributed through two channels: the
official gem and npm package, both titled `actioncable`.
### Gem usage
Through the `actioncable` gem, Action Cable's frontend assets are
available through the Rails Asset Pipeline. Create a `cable.js` or
`cable.coffee` file (this is automatically done for you with Rails
generators), and then simply require the assets:
In JavaScript...
```javascript
//= require action_cable
```
... and in CoffeeScript:
```coffeescript
#= require action_cable
```
### npm usage
In addition to being available through the `actioncable` gem, Action Cable's
frontend JS assets are also bundled in an officially supported npm module,
intended for usage in standalone frontend applications that communicate with a
Rails application. A common use case for this could be if you have a decoupled
frontend application written in React, Ember.js, etc. and want to add real-time
WebSocket functionality.
### Installation
```
npm install actioncable --save
```
### Usage
The `ActionCable` constant is available as a `require`-able module, so
you only have to require the package to gain access to the API that is
provided.
In JavaScript...
```javascript
ActionCable = require('actioncable')
var cable = ActionCable.createConsumer('wss://RAILS-API-PATH.com/cable')
cable.subscriptions.create('AppearanceChannel', {
// normal channel code goes here...
});
```
and in CoffeeScript...
```coffeescript
ActionCable = require('actioncable')
cable = ActionCable.createConsumer('wss://RAILS-API-PATH.com/cable')
cable.subscriptions.create 'AppearanceChannel',
# normal channel code goes here...
```
## Download and Installation
The latest version of Action Cable can be installed with [RubyGems](#gem-usage),
or with [npm](#npm-usage).
Source code can be downloaded as part of the Rails project on GitHub
* https://github.com/rails/rails/tree/master/actioncable
## License
Action Cable is released under the MIT license:
* http://www.opensource.org/licenses/MIT
## Support
API documentation is at:
* http://api.rubyonrails.org
Bug reports can be filed for the Ruby on Rails project here:
* https://github.com/rails/rails/issues
Feature requests should be discussed on the rails-core mailing list here:
* https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core

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#########################################################
# This file has been automatically generated by gem2tgz #
#########################################################
# -*- encoding: utf-8 -*-
# stub: actioncable 5.1.6.1 ruby lib
Gem::Specification.new do |s|
s.name = "actioncable".freeze
s.version = "5.1.6.1"
s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
s.metadata = { "changelog_uri" => "https://github.com/rails/rails/blob/v5.1.6.1/actioncable/CHANGELOG.md", "source_code_uri" => "https://github.com/rails/rails/tree/v5.1.6.1/actioncable" } if s.respond_to? :metadata=
s.require_paths = ["lib".freeze]
s.authors = ["Pratik Naik".freeze, "David Heinemeier Hansson".freeze]
s.date = "2018-11-27"
s.description = "Structure many real-time application concerns into channels over a single WebSocket connection.".freeze
s.email = ["pratiknaik@gmail.com".freeze, "david@loudthinking.com".freeze]
s.files = ["CHANGELOG.md".freeze, "MIT-LICENSE".freeze, "README.md".freeze, "lib/action_cable.rb".freeze, "lib/action_cable/channel.rb".freeze, "lib/action_cable/channel/base.rb".freeze, "lib/action_cable/channel/broadcasting.rb".freeze, "lib/action_cable/channel/callbacks.rb".freeze, "lib/action_cable/channel/naming.rb".freeze, "lib/action_cable/channel/periodic_timers.rb".freeze, "lib/action_cable/channel/streams.rb".freeze, "lib/action_cable/connection.rb".freeze, "lib/action_cable/connection/authorization.rb".freeze, "lib/action_cable/connection/base.rb".freeze, "lib/action_cable/connection/client_socket.rb".freeze, "lib/action_cable/connection/identification.rb".freeze, "lib/action_cable/connection/internal_channel.rb".freeze, "lib/action_cable/connection/message_buffer.rb".freeze, "lib/action_cable/connection/stream.rb".freeze, "lib/action_cable/connection/stream_event_loop.rb".freeze, "lib/action_cable/connection/subscriptions.rb".freeze, "lib/action_cable/connection/tagged_logger_proxy.rb".freeze, "lib/action_cable/connection/web_socket.rb".freeze, "lib/action_cable/engine.rb".freeze, "lib/action_cable/gem_version.rb".freeze, "lib/action_cable/helpers/action_cable_helper.rb".freeze, "lib/action_cable/remote_connections.rb".freeze, "lib/action_cable/server.rb".freeze, "lib/action_cable/server/base.rb".freeze, "lib/action_cable/server/broadcasting.rb".freeze, "lib/action_cable/server/configuration.rb".freeze, "lib/action_cable/server/connections.rb".freeze, "lib/action_cable/server/worker.rb".freeze, "lib/action_cable/server/worker/active_record_connection_management.rb".freeze, "lib/action_cable/subscription_adapter.rb".freeze, "lib/action_cable/subscription_adapter/async.rb".freeze, "lib/action_cable/subscription_adapter/base.rb".freeze, "lib/action_cable/subscription_adapter/channel_prefix.rb".freeze, "lib/action_cable/subscription_adapter/evented_redis.rb".freeze, "lib/action_cable/subscription_adapter/inline.rb".freeze, "lib/action_cable/subscription_adapter/postgresql.rb".freeze, "lib/action_cable/subscription_adapter/redis.rb".freeze, "lib/action_cable/subscription_adapter/subscriber_map.rb".freeze, "lib/action_cable/version.rb".freeze, "lib/assets/compiled/action_cable.js".freeze, "lib/rails/generators/channel/USAGE".freeze, "lib/rails/generators/channel/channel_generator.rb".freeze, "lib/rails/generators/channel/templates/application_cable/channel.rb".freeze, "lib/rails/generators/channel/templates/application_cable/connection.rb".freeze, "lib/rails/generators/channel/templates/assets/cable.js".freeze, "lib/rails/generators/channel/templates/assets/channel.coffee".freeze, "lib/rails/generators/channel/templates/assets/channel.js".freeze, "lib/rails/generators/channel/templates/channel.rb".freeze]
s.homepage = "http://rubyonrails.org".freeze
s.licenses = ["MIT".freeze]
s.required_ruby_version = Gem::Requirement.new(">= 2.2.2".freeze)
s.rubygems_version = "2.7.6".freeze
s.summary = "WebSocket framework for Rails.".freeze
if s.respond_to? :specification_version then
s.specification_version = 4
if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
s.add_runtime_dependency(%q<actionpack>.freeze, ["= 5.1.6.1"])
s.add_runtime_dependency(%q<nio4r>.freeze, ["~> 2.0"])
s.add_runtime_dependency(%q<websocket-driver>.freeze, ["~> 0.6.1"])
else
s.add_dependency(%q<actionpack>.freeze, ["= 5.1.6.1"])
s.add_dependency(%q<nio4r>.freeze, ["~> 2.0"])
s.add_dependency(%q<websocket-driver>.freeze, ["~> 0.6.1"])
end
else
s.add_dependency(%q<actionpack>.freeze, ["= 5.1.6.1"])
s.add_dependency(%q<nio4r>.freeze, ["~> 2.0"])
s.add_dependency(%q<websocket-driver>.freeze, ["~> 0.6.1"])
end
end

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#--
# Copyright (c) 2015-2017 Basecamp, LLC
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#++
require "active_support"
require "active_support/rails"
require "action_cable/version"
module ActionCable
extend ActiveSupport::Autoload
INTERNAL = {
message_types: {
welcome: "welcome".freeze,
ping: "ping".freeze,
confirmation: "confirm_subscription".freeze,
rejection: "reject_subscription".freeze
},
default_mount_path: "/cable".freeze,
protocols: ["actioncable-v1-json".freeze, "actioncable-unsupported".freeze].freeze
}
# Singleton instance of the server
module_function def server
@server ||= ActionCable::Server::Base.new
end
autoload :Server
autoload :Connection
autoload :Channel
autoload :RemoteConnections
autoload :SubscriptionAdapter
end

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module ActionCable
module Channel
extend ActiveSupport::Autoload
eager_autoload do
autoload :Base
autoload :Broadcasting
autoload :Callbacks
autoload :Naming
autoload :PeriodicTimers
autoload :Streams
end
end
end

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require "set"
module ActionCable
module Channel
# The channel provides the basic structure of grouping behavior into logical units when communicating over the WebSocket connection.
# You can think of a channel like a form of controller, but one that's capable of pushing content to the subscriber in addition to simply
# responding to the subscriber's direct requests.
#
# Channel instances are long-lived. A channel object will be instantiated when the cable consumer becomes a subscriber, and then
# lives until the consumer disconnects. This may be seconds, minutes, hours, or even days. That means you have to take special care
# not to do anything silly in a channel that would balloon its memory footprint or whatever. The references are forever, so they won't be released
# as is normally the case with a controller instance that gets thrown away after every request.
#
# Long-lived channels (and connections) also mean you're responsible for ensuring that the data is fresh. If you hold a reference to a user
# record, but the name is changed while that reference is held, you may be sending stale data if you don't take precautions to avoid it.
#
# The upside of long-lived channel instances is that you can use instance variables to keep reference to objects that future subscriber requests
# can interact with. Here's a quick example:
#
# class ChatChannel < ApplicationCable::Channel
# def subscribed
# @room = Chat::Room[params[:room_number]]
# end
#
# def speak(data)
# @room.speak data, user: current_user
# end
# end
#
# The #speak action simply uses the Chat::Room object that was created when the channel was first subscribed to by the consumer when that
# subscriber wants to say something in the room.
#
# == Action processing
#
# Unlike subclasses of ActionController::Base, channels do not follow a RESTful
# constraint form for their actions. Instead, Action Cable operates through a
# remote-procedure call model. You can declare any public method on the
# channel (optionally taking a <tt>data</tt> argument), and this method is
# automatically exposed as callable to the client.
#
# Example:
#
# class AppearanceChannel < ApplicationCable::Channel
# def subscribed
# @connection_token = generate_connection_token
# end
#
# def unsubscribed
# current_user.disappear @connection_token
# end
#
# def appear(data)
# current_user.appear @connection_token, on: data['appearing_on']
# end
#
# def away
# current_user.away @connection_token
# end
#
# private
# def generate_connection_token
# SecureRandom.hex(36)
# end
# end
#
# In this example, the subscribed and unsubscribed methods are not callable methods, as they
# were already declared in ActionCable::Channel::Base, but <tt>#appear</tt>
# and <tt>#away</tt> are. <tt>#generate_connection_token</tt> is also not
# callable, since it's a private method. You'll see that appear accepts a data
# parameter, which it then uses as part of its model call. <tt>#away</tt>
# does not, since it's simply a trigger action.
#
# Also note that in this example, <tt>current_user</tt> is available because
# it was marked as an identifying attribute on the connection. All such
# identifiers will automatically create a delegation method of the same name
# on the channel instance.
#
# == Rejecting subscription requests
#
# A channel can reject a subscription request in the #subscribed callback by
# invoking the #reject method:
#
# class ChatChannel < ApplicationCable::Channel
# def subscribed
# @room = Chat::Room[params[:room_number]]
# reject unless current_user.can_access?(@room)
# end
# end
#
# In this example, the subscription will be rejected if the
# <tt>current_user</tt> does not have access to the chat room. On the
# client-side, the <tt>Channel#rejected</tt> callback will get invoked when
# the server rejects the subscription request.
class Base
include Callbacks
include PeriodicTimers
include Streams
include Naming
include Broadcasting
attr_reader :params, :connection, :identifier
delegate :logger, to: :connection
class << self
# A list of method names that should be considered actions. This
# includes all public instance methods on a channel, less
# any internal methods (defined on Base), adding back in
# any methods that are internal, but still exist on the class
# itself.
#
# ==== Returns
# * <tt>Set</tt> - A set of all methods that should be considered actions.
def action_methods
@action_methods ||= begin
# All public instance methods of this class, including ancestors
methods = (public_instance_methods(true) -
# Except for public instance methods of Base and its ancestors
ActionCable::Channel::Base.public_instance_methods(true) +
# Be sure to include shadowed public instance methods of this class
public_instance_methods(false)).uniq.map(&:to_s)
methods.to_set
end
end
private
# action_methods are cached and there is sometimes need to refresh
# them. ::clear_action_methods! allows you to do that, so next time
# you run action_methods, they will be recalculated.
def clear_action_methods! # :doc:
@action_methods = nil
end
# Refresh the cached action_methods when a new action_method is added.
def method_added(name) # :doc:
super
clear_action_methods!
end
end
def initialize(connection, identifier, params = {})
@connection = connection
@identifier = identifier
@params = params
# When a channel is streaming via pubsub, we want to delay the confirmation
# transmission until pubsub subscription is confirmed.
#
# The counter starts at 1 because it's awaiting a call to #subscribe_to_channel
@defer_subscription_confirmation_counter = Concurrent::AtomicFixnum.new(1)
@reject_subscription = nil
@subscription_confirmation_sent = nil
delegate_connection_identifiers
end
# Extract the action name from the passed data and process it via the channel. The process will ensure
# that the action requested is a public method on the channel declared by the user (so not one of the callbacks
# like #subscribed).
def perform_action(data)
action = extract_action(data)
if processable_action?(action)
payload = { channel_class: self.class.name, action: action, data: data }
ActiveSupport::Notifications.instrument("perform_action.action_cable", payload) do
dispatch_action(action, data)
end
else
logger.error "Unable to process #{action_signature(action, data)}"
end
end
# This method is called after subscription has been added to the connection
# and confirms or rejects the subscription.
def subscribe_to_channel
run_callbacks :subscribe do
subscribed
end
reject_subscription if subscription_rejected?
ensure_confirmation_sent
end
# Called by the cable connection when it's cut, so the channel has a chance to cleanup with callbacks.
# This method is not intended to be called directly by the user. Instead, overwrite the #unsubscribed callback.
def unsubscribe_from_channel # :nodoc:
run_callbacks :unsubscribe do
unsubscribed
end
end
private
# Called once a consumer has become a subscriber of the channel. Usually the place to setup any streams
# you want this channel to be sending to the subscriber.
def subscribed # :doc:
# Override in subclasses
end
# Called once a consumer has cut its cable connection. Can be used for cleaning up connections or marking
# users as offline or the like.
def unsubscribed # :doc:
# Override in subclasses
end
# Transmit a hash of data to the subscriber. The hash will automatically be wrapped in a JSON envelope with
# the proper channel identifier marked as the recipient.
def transmit(data, via: nil) # :doc:
logger.debug "#{self.class.name} transmitting #{data.inspect.truncate(300)}".tap { |m| m << " (via #{via})" if via }
payload = { channel_class: self.class.name, data: data, via: via }
ActiveSupport::Notifications.instrument("transmit.action_cable", payload) do
connection.transmit identifier: @identifier, message: data
end
end
def ensure_confirmation_sent # :doc:
return if subscription_rejected?
@defer_subscription_confirmation_counter.decrement
transmit_subscription_confirmation unless defer_subscription_confirmation?
end
def defer_subscription_confirmation! # :doc:
@defer_subscription_confirmation_counter.increment
end
def defer_subscription_confirmation? # :doc:
@defer_subscription_confirmation_counter.value > 0
end
def subscription_confirmation_sent? # :doc:
@subscription_confirmation_sent
end
def reject # :doc:
@reject_subscription = true
end
def subscription_rejected? # :doc:
@reject_subscription
end
def delegate_connection_identifiers
connection.identifiers.each do |identifier|
define_singleton_method(identifier) do
connection.send(identifier)
end
end
end
def extract_action(data)
(data["action"].presence || :receive).to_sym
end
def processable_action?(action)
self.class.action_methods.include?(action.to_s) unless subscription_rejected?
end
def dispatch_action(action, data)
logger.info action_signature(action, data)
if method(action).arity == 1
public_send action, data
else
public_send action
end
end
def action_signature(action, data)
"#{self.class.name}##{action}".tap do |signature|
if (arguments = data.except("action")).any?
signature << "(#{arguments.inspect})"
end
end
end
def transmit_subscription_confirmation
unless subscription_confirmation_sent?
logger.info "#{self.class.name} is transmitting the subscription confirmation"
ActiveSupport::Notifications.instrument("transmit_subscription_confirmation.action_cable", channel_class: self.class.name) do
connection.transmit identifier: @identifier, type: ActionCable::INTERNAL[:message_types][:confirmation]
@subscription_confirmation_sent = true
end
end
end
def reject_subscription
connection.subscriptions.remove_subscription self
transmit_subscription_rejection
end
def transmit_subscription_rejection
logger.info "#{self.class.name} is transmitting the subscription rejection"
ActiveSupport::Notifications.instrument("transmit_subscription_rejection.action_cable", channel_class: self.class.name) do
connection.transmit identifier: @identifier, type: ActionCable::INTERNAL[:message_types][:rejection]
end
end
end
end
end

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require "active_support/core_ext/object/to_param"
module ActionCable
module Channel
module Broadcasting
extend ActiveSupport::Concern
delegate :broadcasting_for, to: :class
class_methods do
# Broadcast a hash to a unique broadcasting for this <tt>model</tt> in this channel.
def broadcast_to(model, message)
ActionCable.server.broadcast(broadcasting_for([ channel_name, model ]), message)
end
def broadcasting_for(model) #:nodoc:
case
when model.is_a?(Array)
model.map { |m| broadcasting_for(m) }.join(":")
when model.respond_to?(:to_gid_param)
model.to_gid_param
else
model.to_param
end
end
end
end
end
end

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require "active_support/callbacks"
module ActionCable
module Channel
module Callbacks
extend ActiveSupport::Concern
include ActiveSupport::Callbacks
included do
define_callbacks :subscribe
define_callbacks :unsubscribe
end
class_methods do
def before_subscribe(*methods, &block)
set_callback(:subscribe, :before, *methods, &block)
end
def after_subscribe(*methods, &block)
set_callback(:subscribe, :after, *methods, &block)
end
alias_method :on_subscribe, :after_subscribe
def before_unsubscribe(*methods, &block)
set_callback(:unsubscribe, :before, *methods, &block)
end
def after_unsubscribe(*methods, &block)
set_callback(:unsubscribe, :after, *methods, &block)
end
alias_method :on_unsubscribe, :after_unsubscribe
end
end
end
end

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module ActionCable
module Channel
module Naming
extend ActiveSupport::Concern
class_methods do
# Returns the name of the channel, underscored, without the <tt>Channel</tt> ending.
# If the channel is in a namespace, then the namespaces are represented by single
# colon separators in the channel name.
#
# ChatChannel.channel_name # => 'chat'
# Chats::AppearancesChannel.channel_name # => 'chats:appearances'
# FooChats::BarAppearancesChannel.channel_name # => 'foo_chats:bar_appearances'
def channel_name
@channel_name ||= name.sub(/Channel$/, "").gsub("::", ":").underscore
end
end
# Delegates to the class' <tt>channel_name</tt>
delegate :channel_name, to: :class
end
end
end

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module ActionCable
module Channel
module PeriodicTimers
extend ActiveSupport::Concern
included do
class_attribute :periodic_timers, instance_reader: false
self.periodic_timers = []
after_subscribe :start_periodic_timers
after_unsubscribe :stop_periodic_timers
end
module ClassMethods
# Periodically performs a task on the channel, like updating an online
# user counter, polling a backend for new status messages, sending
# regular "heartbeat" messages, or doing some internal work and giving
# progress updates.
#
# Pass a method name or lambda argument or provide a block to call.
# Specify the calling period in seconds using the <tt>every:</tt>
# keyword argument.
#
# periodically :transmit_progress, every: 5.seconds
#
# periodically every: 3.minutes do
# transmit action: :update_count, count: current_count
# end
#
def periodically(callback_or_method_name = nil, every:, &block)
callback =
if block_given?
raise ArgumentError, "Pass a block or provide a callback arg, not both" if callback_or_method_name
block
else
case callback_or_method_name
when Proc
callback_or_method_name
when Symbol
-> { __send__ callback_or_method_name }
else
raise ArgumentError, "Expected a Symbol method name or a Proc, got #{callback_or_method_name.inspect}"
end
end
unless every.kind_of?(Numeric) && every > 0
raise ArgumentError, "Expected every: to be a positive number of seconds, got #{every.inspect}"
end
self.periodic_timers += [[ callback, every: every ]]
end
end
private
def active_periodic_timers
@active_periodic_timers ||= []
end
def start_periodic_timers
self.class.periodic_timers.each do |callback, options|
active_periodic_timers << start_periodic_timer(callback, every: options.fetch(:every))
end
end
def start_periodic_timer(callback, every:)
connection.server.event_loop.timer every do
connection.worker_pool.async_exec self, connection: connection, &callback
end
end
def stop_periodic_timers
active_periodic_timers.each { |timer| timer.shutdown }
active_periodic_timers.clear
end
end
end
end

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module ActionCable
module Channel
# Streams allow channels to route broadcastings to the subscriber. A broadcasting is, as discussed elsewhere, a pubsub queue where any data
# placed into it is automatically sent to the clients that are connected at that time. It's purely an online queue, though. If you're not
# streaming a broadcasting at the very moment it sends out an update, you will not get that update, even if you connect after it has been sent.
#
# Most commonly, the streamed broadcast is sent straight to the subscriber on the client-side. The channel just acts as a connector between
# the two parties (the broadcaster and the channel subscriber). Here's an example of a channel that allows subscribers to get all new
# comments on a given page:
#
# class CommentsChannel < ApplicationCable::Channel
# def follow(data)
# stream_from "comments_for_#{data['recording_id']}"
# end
#
# def unfollow
# stop_all_streams
# end
# end
#
# Based on the above example, the subscribers of this channel will get whatever data is put into the,
# let's say, <tt>comments_for_45</tt> broadcasting as soon as it's put there.
#
# An example broadcasting for this channel looks like so:
#
# ActionCable.server.broadcast "comments_for_45", author: 'DHH', content: 'Rails is just swell'
#
# If you have a stream that is related to a model, then the broadcasting used can be generated from the model and channel.
# The following example would subscribe to a broadcasting like <tt>comments:Z2lkOi8vVGVzdEFwcC9Qb3N0LzE</tt>.
#
# class CommentsChannel < ApplicationCable::Channel
# def subscribed
# post = Post.find(params[:id])
# stream_for post
# end
# end
#
# You can then broadcast to this channel using:
#
# CommentsChannel.broadcast_to(@post, @comment)
#
# If you don't just want to parlay the broadcast unfiltered to the subscriber, you can also supply a callback that lets you alter what is sent out.
# The below example shows how you can use this to provide performance introspection in the process:
#
# class ChatChannel < ApplicationCable::Channel
# def subscribed
# @room = Chat::Room[params[:room_number]]
#
# stream_for @room, coder: ActiveSupport::JSON do |message|
# if message['originated_at'].present?
# elapsed_time = (Time.now.to_f - message['originated_at']).round(2)
#
# ActiveSupport::Notifications.instrument :performance, measurement: 'Chat.message_delay', value: elapsed_time, action: :timing
# logger.info "Message took #{elapsed_time}s to arrive"
# end
#
# transmit message
# end
# end
# end
#
# You can stop streaming from all broadcasts by calling #stop_all_streams.
module Streams
extend ActiveSupport::Concern
included do
on_unsubscribe :stop_all_streams
end
# Start streaming from the named <tt>broadcasting</tt> pubsub queue. Optionally, you can pass a <tt>callback</tt> that'll be used
# instead of the default of just transmitting the updates straight to the subscriber.
# Pass <tt>coder: ActiveSupport::JSON</tt> to decode messages as JSON before passing to the callback.
# Defaults to <tt>coder: nil</tt> which does no decoding, passes raw messages.
def stream_from(broadcasting, callback = nil, coder: nil, &block)
broadcasting = String(broadcasting)
# Don't send the confirmation until pubsub#subscribe is successful
defer_subscription_confirmation!
# Build a stream handler by wrapping the user-provided callback with
# a decoder or defaulting to a JSON-decoding retransmitter.
handler = worker_pool_stream_handler(broadcasting, callback || block, coder: coder)
streams << [ broadcasting, handler ]
connection.server.event_loop.post do
pubsub.subscribe(broadcasting, handler, lambda do
ensure_confirmation_sent
logger.info "#{self.class.name} is streaming from #{broadcasting}"
end)
end
end
# Start streaming the pubsub queue for the <tt>model</tt> in this channel. Optionally, you can pass a
# <tt>callback</tt> that'll be used instead of the default of just transmitting the updates straight
# to the subscriber.
#
# Pass <tt>coder: ActiveSupport::JSON</tt> to decode messages as JSON before passing to the callback.
# Defaults to <tt>coder: nil</tt> which does no decoding, passes raw messages.
def stream_for(model, callback = nil, coder: nil, &block)
stream_from(broadcasting_for([ channel_name, model ]), callback || block, coder: coder)
end
# Unsubscribes all streams associated with this channel from the pubsub queue.
def stop_all_streams
streams.each do |broadcasting, callback|
pubsub.unsubscribe broadcasting, callback
logger.info "#{self.class.name} stopped streaming from #{broadcasting}"
end.clear
end
private
delegate :pubsub, to: :connection
def streams
@_streams ||= []
end
# Always wrap the outermost handler to invoke the user handler on the
# worker pool rather than blocking the event loop.
def worker_pool_stream_handler(broadcasting, user_handler, coder: nil)
handler = stream_handler(broadcasting, user_handler, coder: coder)
-> message do
connection.worker_pool.async_invoke handler, :call, message, connection: connection
end
end
# May be overridden to add instrumentation, logging, specialized error
# handling, or other forms of handler decoration.
#
# TODO: Tests demonstrating this.
def stream_handler(broadcasting, user_handler, coder: nil)
if user_handler
stream_decoder user_handler, coder: coder
else
default_stream_handler broadcasting, coder: coder
end
end
# May be overridden to change the default stream handling behavior
# which decodes JSON and transmits to the client.
#
# TODO: Tests demonstrating this.
#
# TODO: Room for optimization. Update transmit API to be coder-aware
# so we can no-op when pubsub and connection are both JSON-encoded.
# Then we can skip decode+encode if we're just proxying messages.
def default_stream_handler(broadcasting, coder:)
coder ||= ActiveSupport::JSON
stream_transmitter stream_decoder(coder: coder), broadcasting: broadcasting
end
def stream_decoder(handler = identity_handler, coder:)
if coder
-> message { handler.(coder.decode(message)) }
else
handler
end
end
def stream_transmitter(handler = identity_handler, broadcasting:)
via = "streamed from #{broadcasting}"
-> (message) do
transmit handler.(message), via: via
end
end
def identity_handler
-> message { message }
end
end
end
end

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module ActionCable
module Connection
extend ActiveSupport::Autoload
eager_autoload do
autoload :Authorization
autoload :Base
autoload :ClientSocket
autoload :Identification
autoload :InternalChannel
autoload :MessageBuffer
autoload :Stream
autoload :StreamEventLoop
autoload :Subscriptions
autoload :TaggedLoggerProxy
autoload :WebSocket
end
end
end

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module ActionCable
module Connection
module Authorization
class UnauthorizedError < StandardError; end
# 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
end
end
end
end

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require "action_dispatch"
module ActionCable
module Connection
# For every WebSocket connection the Action Cable server accepts, a Connection object will be instantiated. This instance becomes the parent
# of all of the channel subscriptions that are created from there on. Incoming messages are then routed to these channel subscriptions
# based on an identifier sent by the Action Cable consumer. The Connection itself does not deal with any specific application logic beyond
# authentication and authorization.
#
# Here's a basic example:
#
# module ApplicationCable
# class Connection < ActionCable::Connection::Base
# identified_by :current_user
#
# def connect
# self.current_user = find_verified_user
# logger.add_tags current_user.name
# end
#
# def disconnect
# # Any cleanup work needed when the cable connection is cut.
# end
#
# private
# def find_verified_user
# User.find_by_identity(cookies.signed[:identity_id]) ||
# reject_unauthorized_connection
# end
# end
# end
#
# First, we declare that this connection can be identified by its current_user. This allows us to later be able to find all connections
# established for that current_user (and potentially disconnect them). You can declare as many
# identification indexes as you like. Declaring an identification means that an attr_accessor is automatically set for that key.
#
# Second, we rely on the fact that the WebSocket connection is established with the cookies from the domain being sent along. This makes
# it easy to use signed cookies that were set when logging in via a web interface to authorize the WebSocket connection.
#
# Finally, we add a tag to the connection-specific logger with the name of the current user to easily distinguish their messages in the log.
#
# Pretty simple, eh?
class Base
include Identification
include InternalChannel
include Authorization
attr_reader :server, :env, :subscriptions, :logger, :worker_pool, :protocol
delegate :event_loop, :pubsub, to: :server
def initialize(server, env, coder: ActiveSupport::JSON)
@server, @env, @coder = server, env, coder
@worker_pool = server.worker_pool
@logger = new_tagged_logger
@websocket = ActionCable::Connection::WebSocket.new(env, self, event_loop)
@subscriptions = ActionCable::Connection::Subscriptions.new(self)
@message_buffer = ActionCable::Connection::MessageBuffer.new(self)
@_internal_subscriptions = nil
@started_at = Time.now
end
# Called by the server when a new WebSocket connection is established. This configures the callbacks intended for overwriting by the user.
# This method should not be called directly -- instead rely upon on the #connect (and #disconnect) callbacks.
def process #:nodoc:
logger.info started_request_message
if websocket.possible? && allow_request_origin?
respond_to_successful_request
else
respond_to_invalid_request
end
end
# Decodes WebSocket messages and dispatches them to subscribed channels.
# WebSocket message transfer encoding is always JSON.
def receive(websocket_message) #:nodoc:
send_async :dispatch_websocket_message, websocket_message
end
def dispatch_websocket_message(websocket_message) #:nodoc:
if websocket.alive?
subscriptions.execute_command decode(websocket_message)
else
logger.error "Ignoring message processed after the WebSocket was closed: #{websocket_message.inspect})"
end
end
def transmit(cable_message) # :nodoc:
websocket.transmit encode(cable_message)
end
# Close the WebSocket connection.
def close
websocket.close
end
# Invoke a method on the connection asynchronously through the pool of thread workers.
def send_async(method, *arguments)
worker_pool.async_invoke(self, method, *arguments)
end
# Return a basic hash of statistics for the connection keyed with <tt>identifier</tt>, <tt>started_at</tt>, <tt>subscriptions</tt>, and <tt>request_id</tt>.
# This can be returned by a health check against the connection.
def statistics
{
identifier: connection_identifier,
started_at: @started_at,
subscriptions: subscriptions.identifiers,
request_id: @env["action_dispatch.request_id"]
}
end
def beat
transmit type: ActionCable::INTERNAL[:message_types][:ping], message: Time.now.to_i
end
def on_open # :nodoc:
send_async :handle_open
end
def on_message(message) # :nodoc:
message_buffer.append message
end
def on_error(message) # :nodoc:
# log errors to make diagnosing socket errors easier
logger.error "WebSocket error occurred: #{message}"
end
def on_close(reason, code) # :nodoc:
send_async :handle_close
end
# TODO Change this to private once we've dropped Ruby 2.2 support.
# Workaround for Ruby 2.2 "private attribute?" warning.
protected
attr_reader :websocket
attr_reader :message_buffer
private
# The request that initiated the WebSocket connection is available here. This gives access to the environment, cookies, etc.
def request # :doc:
@request ||= begin
environment = Rails.application.env_config.merge(env) if defined?(Rails.application) && Rails.application
ActionDispatch::Request.new(environment || env)
end
end
# The cookies of the request that initiated the WebSocket connection. Useful for performing authorization checks.
def cookies # :doc:
request.cookie_jar
end
def encode(cable_message)
@coder.encode cable_message
end
def decode(websocket_message)
@coder.decode websocket_message
end
def handle_open
@protocol = websocket.protocol
connect if respond_to?(:connect)
subscribe_to_internal_channel
send_welcome_message
message_buffer.process!
server.add_connection(self)
rescue ActionCable::Connection::Authorization::UnauthorizedError
respond_to_invalid_request
end
def handle_close
logger.info finished_request_message
server.remove_connection(self)
subscriptions.unsubscribe_from_all
unsubscribe_from_internal_channel
disconnect if respond_to?(:disconnect)
end
def send_welcome_message
# Send welcome message to the internal connection monitor channel.
# This ensures the connection monitor state is reset after a successful
# websocket connection.
transmit type: ActionCable::INTERNAL[:message_types][:welcome]
end
def allow_request_origin?
return true if server.config.disable_request_forgery_protection
proto = Rack::Request.new(env).ssl? ? "https" : "http"
if server.config.allow_same_origin_as_host && env["HTTP_ORIGIN"] == "#{proto}://#{env['HTTP_HOST']}"
true
elsif Array(server.config.allowed_request_origins).any? { |allowed_origin| allowed_origin === env["HTTP_ORIGIN"] }
true
else
logger.error("Request origin not allowed: #{env['HTTP_ORIGIN']}")
false
end
end
def respond_to_successful_request
logger.info successful_request_message
websocket.rack_response
end
def respond_to_invalid_request
close if websocket.alive?
logger.error invalid_request_message
logger.info finished_request_message
[ 404, { "Content-Type" => "text/plain" }, [ "Page not found" ] ]
end
# Tags are declared in the server but computed in the connection. This allows us per-connection tailored tags.
def new_tagged_logger
TaggedLoggerProxy.new server.logger,
tags: server.config.log_tags.map { |tag| tag.respond_to?(:call) ? tag.call(request) : tag.to_s.camelize }
end
def started_request_message
'Started %s "%s"%s for %s at %s' % [
request.request_method,
request.filtered_path,
websocket.possible? ? " [WebSocket]" : "[non-WebSocket]",
request.ip,
Time.now.to_s ]
end
def finished_request_message
'Finished "%s"%s for %s at %s' % [
request.filtered_path,
websocket.possible? ? " [WebSocket]" : "[non-WebSocket]",
request.ip,
Time.now.to_s ]
end
def invalid_request_message
"Failed to upgrade to WebSocket (REQUEST_METHOD: %s, HTTP_CONNECTION: %s, HTTP_UPGRADE: %s)" % [
env["REQUEST_METHOD"], env["HTTP_CONNECTION"], env["HTTP_UPGRADE"]
]
end
def successful_request_message
"Successfully upgraded to WebSocket (REQUEST_METHOD: %s, HTTP_CONNECTION: %s, HTTP_UPGRADE: %s)" % [
env["REQUEST_METHOD"], env["HTTP_CONNECTION"], env["HTTP_UPGRADE"]
]
end
end
end
end

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require "websocket/driver"
module ActionCable
module Connection
#--
# This class is heavily based on faye-websocket-ruby
#
# Copyright (c) 2010-2015 James Coglan
class ClientSocket # :nodoc:
def self.determine_url(env)
scheme = secure_request?(env) ? "wss:" : "ws:"
"#{ scheme }//#{ env['HTTP_HOST'] }#{ env['REQUEST_URI'] }"
end
def self.secure_request?(env)
return true if env["HTTPS"] == "on"
return true if env["HTTP_X_FORWARDED_SSL"] == "on"
return true if env["HTTP_X_FORWARDED_SCHEME"] == "https"
return true if env["HTTP_X_FORWARDED_PROTO"] == "https"
return true if env["rack.url_scheme"] == "https"
return false
end
CONNECTING = 0
OPEN = 1
CLOSING = 2
CLOSED = 3
attr_reader :env, :url
def initialize(env, event_target, event_loop, protocols)
@env = env
@event_target = event_target
@event_loop = event_loop
@url = ClientSocket.determine_url(@env)
@driver = @driver_started = nil
@close_params = ["", 1006]
@ready_state = CONNECTING
# The driver calls +env+, +url+, and +write+
@driver = ::WebSocket::Driver.rack(self, protocols: protocols)
@driver.on(:open) { |e| open }
@driver.on(:message) { |e| receive_message(e.data) }
@driver.on(:close) { |e| begin_close(e.reason, e.code) }
@driver.on(:error) { |e| emit_error(e.message) }
@stream = ActionCable::Connection::Stream.new(@event_loop, self)
end
def start_driver
return if @driver.nil? || @driver_started
@stream.hijack_rack_socket
if callback = @env["async.callback"]
callback.call([101, {}, @stream])
end
@driver_started = true
@driver.start
end
def rack_response
start_driver
[ -1, {}, [] ]
end
def write(data)
@stream.write(data)
rescue => e
emit_error e.message
end
def transmit(message)
return false if @ready_state > OPEN
case message
when Numeric then @driver.text(message.to_s)
when String then @driver.text(message)
when Array then @driver.binary(message)
else false
end
end
def close(code = nil, reason = nil)
code ||= 1000
reason ||= ""
unless code == 1000 || (code >= 3000 && code <= 4999)
raise ArgumentError, "Failed to execute 'close' on WebSocket: " \
"The code must be either 1000, or between 3000 and 4999. " \
"#{code} is neither."
end
@ready_state = CLOSING unless @ready_state == CLOSED
@driver.close(reason, code)
end
def parse(data)
@driver.parse(data)
end
def client_gone
finalize_close
end
def alive?
@ready_state == OPEN
end
def protocol
@driver.protocol
end
private
def open
return unless @ready_state == CONNECTING
@ready_state = OPEN
@event_target.on_open
end
def receive_message(data)
return unless @ready_state == OPEN
@event_target.on_message(data)
end
def emit_error(message)
return if @ready_state >= CLOSING
@event_target.on_error(message)
end
def begin_close(reason, code)
return if @ready_state == CLOSED
@ready_state = CLOSING
@close_params = [reason, code]
@stream.shutdown if @stream
finalize_close
end
def finalize_close
return if @ready_state == CLOSED
@ready_state = CLOSED
@event_target.on_close(*@close_params)
end
end
end
end

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require "set"
module ActionCable
module Connection
module Identification
extend ActiveSupport::Concern
included do
class_attribute :identifiers
self.identifiers = Set.new
end
class_methods do
# Mark a key as being a connection identifier index that can then be used to find the specific connection again later.
# Common identifiers are current_user and current_account, but could be anything, really.
#
# Note that anything marked as an identifier will automatically create a delegate by the same name on any
# channel instances created off the connection.
def identified_by(*identifiers)
Array(identifiers).each { |identifier| attr_accessor identifier }
self.identifiers += identifiers
end
end
# Return a single connection identifier that combines the value of all the registered identifiers into a single gid.
def connection_identifier
unless defined? @connection_identifier
@connection_identifier = connection_gid identifiers.map { |id| instance_variable_get("@#{id}") }.compact
end
@connection_identifier
end
private
def connection_gid(ids)
ids.map do |o|
if o.respond_to? :to_gid_param
o.to_gid_param
else
o.to_s
end
end.sort.join(":")
end
end
end
end

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module ActionCable
module Connection
# Makes it possible for the RemoteConnection to disconnect a specific connection.
module InternalChannel
extend ActiveSupport::Concern
private
def internal_channel
"action_cable/#{connection_identifier}"
end
def subscribe_to_internal_channel
if connection_identifier.present?
callback = -> (message) { process_internal_message decode(message) }
@_internal_subscriptions ||= []
@_internal_subscriptions << [ internal_channel, callback ]
server.event_loop.post { pubsub.subscribe(internal_channel, callback) }
logger.info "Registered connection (#{connection_identifier})"
end
end
def unsubscribe_from_internal_channel
if @_internal_subscriptions.present?
@_internal_subscriptions.each { |channel, callback| server.event_loop.post { pubsub.unsubscribe(channel, callback) } }
end
end
def process_internal_message(message)
case message["type"]
when "disconnect"
logger.info "Removing connection (#{connection_identifier})"
websocket.close
end
rescue Exception => e
logger.error "There was an exception - #{e.class}(#{e.message})"
logger.error e.backtrace.join("\n")
close
end
end
end
end

55
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module ActionCable
module Connection
# Allows us to buffer messages received from the WebSocket before the Connection has been fully initialized, and is ready to receive them.
class MessageBuffer # :nodoc:
def initialize(connection)
@connection = connection
@buffered_messages = []
end
def append(message)
if valid? message
if processing?
receive message
else
buffer message
end
else
connection.logger.error "Couldn't handle non-string message: #{message.class}"
end
end
def processing?
@processing
end
def process!
@processing = true
receive_buffered_messages
end
# TODO Change this to private once we've dropped Ruby 2.2 support.
# Workaround for Ruby 2.2 "private attribute?" warning.
protected
attr_reader :connection
attr_reader :buffered_messages
private
def valid?(message)
message.is_a?(String)
end
def receive(message)
connection.receive message
end
def buffer(message)
buffered_messages << message
end
def receive_buffered_messages
receive buffered_messages.shift until buffered_messages.empty?
end
end
end
end

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require "thread"
module ActionCable
module Connection
#--
# This class is heavily based on faye-websocket-ruby
#
# Copyright (c) 2010-2015 James Coglan
class Stream # :nodoc:
def initialize(event_loop, socket)
@event_loop = event_loop
@socket_object = socket
@stream_send = socket.env["stream.send"]
@rack_hijack_io = nil
@write_lock = Mutex.new
@write_head = nil
@write_buffer = Queue.new
end
def each(&callback)
@stream_send ||= callback
end
def close
shutdown
@socket_object.client_gone
end
def shutdown
clean_rack_hijack
end
def write(data)
if @stream_send
return @stream_send.call(data)
end
if @write_lock.try_lock
begin
if @write_head.nil? && @write_buffer.empty?
written = @rack_hijack_io.write_nonblock(data, exception: false)
case written
when :wait_writable
# proceed below
when data.bytesize
return data.bytesize
else
@write_head = data.byteslice(written, data.bytesize)
@event_loop.writes_pending @rack_hijack_io
return data.bytesize
end
end
ensure
@write_lock.unlock
end
end
@write_buffer << data
@event_loop.writes_pending @rack_hijack_io
data.bytesize
rescue EOFError, Errno::ECONNRESET
@socket_object.client_gone
end
def flush_write_buffer
@write_lock.synchronize do
loop do
if @write_head.nil?
return true if @write_buffer.empty?
@write_head = @write_buffer.pop
end
written = @rack_hijack_io.write_nonblock(@write_head, exception: false)
case written
when :wait_writable
return false
when @write_head.bytesize
@write_head = nil
else
@write_head = @write_head.byteslice(written, @write_head.bytesize)
return false
end
end
end
end
def receive(data)
@socket_object.parse(data)
end
def hijack_rack_socket
return unless @socket_object.env["rack.hijack"]
@socket_object.env["rack.hijack"].call
@rack_hijack_io = @socket_object.env["rack.hijack_io"]
@event_loop.attach(@rack_hijack_io, self)
end
private
def clean_rack_hijack
return unless @rack_hijack_io
@event_loop.detach(@rack_hijack_io, self)
@rack_hijack_io = nil
end
end
end
end

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require "nio"
require "thread"
module ActionCable
module Connection
class StreamEventLoop
def initialize
@nio = @executor = @thread = nil
@map = {}
@stopping = false
@todo = Queue.new
@spawn_mutex = Mutex.new
end
def timer(interval, &block)
Concurrent::TimerTask.new(execution_interval: interval, &block).tap(&:execute)
end
def post(task = nil, &block)
task ||= block
spawn
@executor << task
end
def attach(io, stream)
@todo << lambda do
@map[io] = @nio.register(io, :r)
@map[io].value = stream
end
wakeup
end
def detach(io, stream)
@todo << lambda do
@nio.deregister io
@map.delete io
io.close
end
wakeup
end
def writes_pending(io)
@todo << lambda do
if monitor = @map[io]
monitor.interests = :rw
end
end
wakeup
end
def stop
@stopping = true
wakeup if @nio
end
private
def spawn
return if @thread && @thread.status
@spawn_mutex.synchronize do
return if @thread && @thread.status
@nio ||= NIO::Selector.new
@executor ||= Concurrent::ThreadPoolExecutor.new(
min_threads: 1,
max_threads: 10,
max_queue: 0,
)
@thread = Thread.new { run }
return true
end
end
def wakeup
spawn || @nio.wakeup
end
def run
loop do
if @stopping
@nio.close
break
end
until @todo.empty?
@todo.pop(true).call
end
next unless monitors = @nio.select
monitors.each do |monitor|
io = monitor.io
stream = monitor.value
begin
if monitor.writable?
if stream.flush_write_buffer
monitor.interests = :r
end
next unless monitor.readable?
end
incoming = io.read_nonblock(4096, exception: false)
case incoming
when :wait_readable
next
when nil
stream.close
else
stream.receive incoming
end
rescue
# We expect one of EOFError or Errno::ECONNRESET in
# normal operation (when the client goes away). But if
# anything else goes wrong, this is still the best way
# to handle it.
begin
stream.close
rescue
@nio.deregister io
@map.delete io
end
end
end
end
end
end
end
end

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require "active_support/core_ext/hash/indifferent_access"
module ActionCable
module Connection
# Collection class for all the channel subscriptions established on a given connection. Responsible for routing incoming commands that arrive on
# the connection to the proper channel.
class Subscriptions # :nodoc:
def initialize(connection)
@connection = connection
@subscriptions = {}
end
def execute_command(data)
case data["command"]
when "subscribe" then add data
when "unsubscribe" then remove data
when "message" then perform_action data
else
logger.error "Received unrecognized command in #{data.inspect}"
end
rescue Exception => e
logger.error "Could not execute command from (#{data.inspect}) [#{e.class} - #{e.message}]: #{e.backtrace.first(5).join(" | ")}"
end
def add(data)
id_key = data["identifier"]
id_options = ActiveSupport::JSON.decode(id_key).with_indifferent_access
return if subscriptions.key?(id_key)
subscription_klass = id_options[:channel].safe_constantize
if subscription_klass && ActionCable::Channel::Base >= subscription_klass
subscription = subscription_klass.new(connection, id_key, id_options)
subscriptions[id_key] = subscription
subscription.subscribe_to_channel
else
logger.error "Subscription class not found: #{id_options[:channel].inspect}"
end
end
def remove(data)
logger.info "Unsubscribing from channel: #{data['identifier']}"
remove_subscription subscriptions[data["identifier"]]
end
def remove_subscription(subscription)
subscription.unsubscribe_from_channel
subscriptions.delete(subscription.identifier)
end
def perform_action(data)
find(data).perform_action ActiveSupport::JSON.decode(data["data"])
end
def identifiers
subscriptions.keys
end
def unsubscribe_from_all
subscriptions.each { |id, channel| remove_subscription(channel) }
end
# TODO Change this to private once we've dropped Ruby 2.2 support.
# Workaround for Ruby 2.2 "private attribute?" warning.
protected
attr_reader :connection, :subscriptions
private
delegate :logger, to: :connection
def find(data)
if subscription = subscriptions[data["identifier"]]
subscription
else
raise "Unable to find subscription with identifier: #{data['identifier']}"
end
end
end
end
end

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debian/gems-compat/actioncable-5.1.6.1/lib/action_cable/connection/tagged_logger_proxy.rb vendored Normal file
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module ActionCable
module Connection
# Allows the use of per-connection tags against the server logger. This wouldn't work using the traditional
# <tt>ActiveSupport::TaggedLogging</tt> enhanced Rails.logger, as that logger will reset the tags between requests.
# The connection is long-lived, so it needs its own set of tags for its independent duration.
class TaggedLoggerProxy
attr_reader :tags
def initialize(logger, tags:)
@logger = logger
@tags = tags.flatten
end
def add_tags(*tags)
@tags += tags.flatten
@tags = @tags.uniq
end
def tag(logger)
if logger.respond_to?(:tagged)
current_tags = tags - logger.formatter.current_tags
logger.tagged(*current_tags) { yield }
else
yield
end
end
%i( debug info warn error fatal unknown ).each do |severity|
define_method(severity) do |message|
log severity, message
end
end
private
def log(type, message) # :doc:
tag(@logger) { @logger.send type, message }
end
end
end
end

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require "websocket/driver"
module ActionCable
module Connection
# Wrap the real socket to minimize the externally-presented API
class WebSocket
def initialize(env, event_target, event_loop, protocols: ActionCable::INTERNAL[:protocols])
@websocket = ::WebSocket::Driver.websocket?(env) ? ClientSocket.new(env, event_target, event_loop, protocols) : nil
end
def possible?
websocket
end
def alive?
websocket && websocket.alive?
end
def transmit(data)
websocket.transmit data
end
def close
websocket.close
end
def protocol
websocket.protocol
end
def rack_response
websocket.rack_response
end
# TODO Change this to private once we've dropped Ruby 2.2 support.
# Workaround for Ruby 2.2 "private attribute?" warning.
protected
attr_reader :websocket
end
end
end

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require "rails"
require "action_cable"
require "action_cable/helpers/action_cable_helper"
require "active_support/core_ext/hash/indifferent_access"
module ActionCable
class Engine < Rails::Engine # :nodoc:
config.action_cable = ActiveSupport::OrderedOptions.new
config.action_cable.mount_path = ActionCable::INTERNAL[:default_mount_path]
config.eager_load_namespaces << ActionCable
initializer "action_cable.helpers" do
ActiveSupport.on_load(:action_view) do
include ActionCable::Helpers::ActionCableHelper
end
end
initializer "action_cable.logger" do
ActiveSupport.on_load(:action_cable) { self.logger ||= ::Rails.logger }
end
initializer "action_cable.set_configs" do |app|
options = app.config.action_cable
options.allowed_request_origins ||= /https?:\/\/localhost:\d+/ if ::Rails.env.development?
app.paths.add "config/cable", with: "config/cable.yml"
ActiveSupport.on_load(:action_cable) do
if (config_path = Pathname.new(app.config.paths["config/cable"].first)).exist?
self.cable = Rails.application.config_for(config_path).with_indifferent_access
end
previous_connection_class = connection_class
self.connection_class = -> { "ApplicationCable::Connection".safe_constantize || previous_connection_class.call }
options.each { |k, v| send("#{k}=", v) }
end
end
initializer "action_cable.routes" do
config.after_initialize do |app|
config = app.config
unless config.action_cable.mount_path.nil?
app.routes.prepend do
mount ActionCable.server => config.action_cable.mount_path, internal: true
end
end
end
end
initializer "action_cable.set_work_hooks" do |app|
ActiveSupport.on_load(:action_cable) do
ActionCable::Server::Worker.set_callback :work, :around, prepend: true do |_, inner|
app.executor.wrap do
# If we took a while to get the lock, we may have been halted
# in the meantime. As we haven't started doing any real work
# yet, we should pretend that we never made it off the queue.
unless stopping?
inner.call
end
end
end
wrap = lambda do |_, inner|
app.executor.wrap(&inner)
end
ActionCable::Channel::Base.set_callback :subscribe, :around, prepend: true, &wrap
ActionCable::Channel::Base.set_callback :unsubscribe, :around, prepend: true, &wrap
app.reloader.before_class_unload do
ActionCable.server.restart
end
end
end
end
end

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module ActionCable
# Returns the version of the currently loaded Action Cable as a <tt>Gem::Version</tt>.
def self.gem_version
Gem::Version.new VERSION::STRING
end
module VERSION
MAJOR = 5
MINOR = 1
TINY = 6
PRE = "1"
STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")
end
end

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module ActionCable
module Helpers
module ActionCableHelper
# Returns an "action-cable-url" meta tag with the value of the URL specified in your
# configuration. Ensure this is above your JavaScript tag:
#
# <head>
# <%= action_cable_meta_tag %>
# <%= javascript_include_tag 'application', 'data-turbolinks-track' => 'reload' %>
# </head>
#
# This is then used by Action Cable to determine the URL of your WebSocket server.
# Your CoffeeScript can then connect to the server without needing to specify the
# URL directly:
#
# #= require cable
# @App = {}
# App.cable = Cable.createConsumer()
#
# Make sure to specify the correct server location in each of your environment
# config files:
#
# config.action_cable.mount_path = "/cable123"
# <%= action_cable_meta_tag %> would render:
# => <meta name="action-cable-url" content="/cable123" />
#
# config.action_cable.url = "ws://actioncable.com"
# <%= action_cable_meta_tag %> would render:
# => <meta name="action-cable-url" content="ws://actioncable.com" />
#
def action_cable_meta_tag
tag "meta", name: "action-cable-url", content: (
ActionCable.server.config.url ||
ActionCable.server.config.mount_path ||
raise("No Action Cable URL configured -- please configure this at config.action_cable.url")
)
end
end
end
end

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module ActionCable
# If you need to disconnect a given connection, you can go through the
# RemoteConnections. You can find the connections you're looking for by
# searching for the identifier declared on the connection. For example:
#
# module ApplicationCable
# class Connection < ActionCable::Connection::Base
# identified_by :current_user
# ....
# end
# end
#
# ActionCable.server.remote_connections.where(current_user: User.find(1)).disconnect
#
# This will disconnect all the connections established for
# <tt>User.find(1)</tt>, across all servers running on all machines, because
# it uses the internal channel that all of these servers are subscribed to.
class RemoteConnections
attr_reader :server
def initialize(server)
@server = server
end
def where(identifier)
RemoteConnection.new(server, identifier)
end
private
# Represents a single remote connection found via <tt>ActionCable.server.remote_connections.where(*)</tt>.
# Exists solely for the purpose of calling #disconnect on that connection.
class RemoteConnection
class InvalidIdentifiersError < StandardError; end
include Connection::Identification, Connection::InternalChannel
def initialize(server, ids)
@server = server
set_identifier_instance_vars(ids)
end
# Uses the internal channel to disconnect the connection.
def disconnect
server.broadcast internal_channel, type: "disconnect"
end
# Returns all the identifiers that were applied to this connection.
def identifiers
server.connection_identifiers
end
private
attr_reader :server
def set_identifier_instance_vars(ids)
raise InvalidIdentifiersError unless valid_identifiers?(ids)
ids.each { |k, v| instance_variable_set("@#{k}", v) }
end
def valid_identifiers?(ids)
keys = ids.keys
identifiers.all? { |id| keys.include?(id) }
end
end
end
end

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module ActionCable
module Server
extend ActiveSupport::Autoload
eager_autoload do
autoload :Base
autoload :Broadcasting
autoload :Connections
autoload :Configuration
autoload :Worker
autoload :ActiveRecordConnectionManagement, "action_cable/server/worker/active_record_connection_management"
end
end
end

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require "monitor"
module ActionCable
module Server
# A singleton ActionCable::Server instance is available via ActionCable.server. It's used by the Rack process that starts the Action Cable server, but
# is also used by the user to reach the RemoteConnections object, which is used for finding and disconnecting connections across all servers.
#
# Also, this is the server instance used for broadcasting. See Broadcasting for more information.
class Base
include ActionCable::Server::Broadcasting
include ActionCable::Server::Connections
cattr_accessor(:config, instance_accessor: true) { ActionCable::Server::Configuration.new }
def self.logger; config.logger; end
delegate :logger, to: :config
attr_reader :mutex
def initialize
@mutex = Monitor.new
@remote_connections = @event_loop = @worker_pool = @pubsub = nil
end
# Called by Rack to setup the server.
def call(env)
setup_heartbeat_timer
config.connection_class.call.new(self, env).process
end
# Disconnect all the connections identified by `identifiers` on this server or any others via RemoteConnections.
def disconnect(identifiers)
remote_connections.where(identifiers).disconnect
end
def restart
connections.each(&:close)
@mutex.synchronize do
# Shutdown the worker pool
@worker_pool.halt if @worker_pool
@worker_pool = nil
# Shutdown the pub/sub adapter
@pubsub.shutdown if @pubsub
@pubsub = nil
end
end
# Gateway to RemoteConnections. See that class for details.
def remote_connections
@remote_connections || @mutex.synchronize { @remote_connections ||= RemoteConnections.new(self) }
end
def event_loop
@event_loop || @mutex.synchronize { @event_loop ||= ActionCable::Connection::StreamEventLoop.new }
end
# The worker pool is where we run connection callbacks and channel actions. We do as little as possible on the server's main thread.
# The worker pool is an executor service that's backed by a pool of threads working from a task queue. The thread pool size maxes out
# at 4 worker threads by default. Tune the size yourself with <tt>config.action_cable.worker_pool_size</tt>.
#
# Using Active Record, Redis, etc within your channel actions means you'll get a separate connection from each thread in the worker pool.
# Plan your deployment accordingly: 5 servers each running 5 Puma workers each running an 8-thread worker pool means at least 200 database
# connections.
#
# Also, ensure that your database connection pool size is as least as large as your worker pool size. Otherwise, workers may oversubscribe
# the database connection pool and block while they wait for other workers to release their connections. Use a smaller worker pool or a larger
# database connection pool instead.
def worker_pool
@worker_pool || @mutex.synchronize { @worker_pool ||= ActionCable::Server::Worker.new(max_size: config.worker_pool_size) }
end
# Adapter used for all streams/broadcasting.
def pubsub
@pubsub || @mutex.synchronize { @pubsub ||= config.pubsub_adapter.new(self) }
end
# All of the identifiers applied to the connection class associated with this server.
def connection_identifiers
config.connection_class.call.identifiers
end
end
ActiveSupport.run_load_hooks(:action_cable, Base.config)
end
end

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module ActionCable
module Server
# Broadcasting is how other parts of your application can send messages to a channel's subscribers. As explained in Channel, most of the time, these
# broadcastings are streamed directly to the clients subscribed to the named broadcasting. Let's explain with a full-stack example:
#
# class WebNotificationsChannel < ApplicationCable::Channel
# def subscribed
# stream_from "web_notifications_#{current_user.id}"
# end
# end
#
# # Somewhere in your app this is called, perhaps from a NewCommentJob:
# ActionCable.server.broadcast \
# "web_notifications_1", { title: "New things!", body: "All that's fit for print" }
#
# # Client-side CoffeeScript, which assumes you've already requested the right to send web notifications:
# App.cable.subscriptions.create "WebNotificationsChannel",
# received: (data) ->
# new Notification data['title'], body: data['body']
module Broadcasting
# Broadcast a hash directly to a named <tt>broadcasting</tt>. This will later be JSON encoded.
def broadcast(broadcasting, message, coder: ActiveSupport::JSON)
broadcaster_for(broadcasting, coder: coder).broadcast(message)
end
# Returns a broadcaster for a named <tt>broadcasting</tt> that can be reused. Useful when you have an object that
# may need multiple spots to transmit to a specific broadcasting over and over.
def broadcaster_for(broadcasting, coder: ActiveSupport::JSON)
Broadcaster.new(self, String(broadcasting), coder: coder)
end
private
class Broadcaster
attr_reader :server, :broadcasting, :coder
def initialize(server, broadcasting, coder:)
@server, @broadcasting, @coder = server, broadcasting, coder
end
def broadcast(message)
server.logger.debug "[ActionCable] Broadcasting to #{broadcasting}: #{message.inspect}"
payload = { broadcasting: broadcasting, message: message, coder: coder }
ActiveSupport::Notifications.instrument("broadcast.action_cable", payload) do
encoded = coder ? coder.encode(message) : message
server.pubsub.broadcast broadcasting, encoded
end
end
end
end
end
end

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module ActionCable
module Server
# An instance of this configuration object is available via ActionCable.server.config, which allows you to tweak Action Cable configuration
# in a Rails config initializer.
class Configuration
attr_accessor :logger, :log_tags
attr_accessor :connection_class, :worker_pool_size
attr_accessor :disable_request_forgery_protection, :allowed_request_origins, :allow_same_origin_as_host
attr_accessor :cable, :url, :mount_path
def initialize
@log_tags = []
@connection_class = -> { ActionCable::Connection::Base }
@worker_pool_size = 4
@disable_request_forgery_protection = false
@allow_same_origin_as_host = true
end
# Returns constant of subscription adapter specified in config/cable.yml.
# If the adapter cannot be found, this will default to the Redis adapter.
# Also makes sure proper dependencies are required.
def pubsub_adapter
adapter = (cable.fetch("adapter") { "redis" })
path_to_adapter = "action_cable/subscription_adapter/#{adapter}"
begin
require path_to_adapter
rescue Gem::LoadError => e
raise Gem::LoadError, "Specified '#{adapter}' for Action Cable pubsub adapter, but the gem is not loaded. Add `gem '#{e.name}'` to your Gemfile (and ensure its version is at the minimum required by Action Cable)."
rescue LoadError => e
raise LoadError, "Could not load '#{path_to_adapter}'. Make sure that the adapter in config/cable.yml is valid. If you use an adapter other than 'postgresql' or 'redis' add the necessary adapter gem to the Gemfile.", e.backtrace
end
adapter = adapter.camelize
adapter = "PostgreSQL" if adapter == "Postgresql"
"ActionCable::SubscriptionAdapter::#{adapter}".constantize
end
end
end
end

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module ActionCable
module Server
# Collection class for all the connections that have been established on this specific server. Remember, usually you'll run many Action Cable servers, so
# you can't use this collection as a full list of all of the connections established against your application. Instead, use RemoteConnections for that.
module Connections # :nodoc:
BEAT_INTERVAL = 3
def connections
@connections ||= []
end
def add_connection(connection)
connections << connection
end
def remove_connection(connection)
connections.delete connection
end
# WebSocket connection implementations differ on when they'll mark a connection as stale. We basically never want a connection to go stale, as you
# then can't rely on being able to communicate with the connection. To solve this, a 3 second heartbeat runs on all connections. If the beat fails, we automatically
# disconnect.
def setup_heartbeat_timer
@heartbeat_timer ||= event_loop.timer(BEAT_INTERVAL) do
event_loop.post { connections.map(&:beat) }
end
end
def open_connections_statistics
connections.map(&:statistics)
end
end
end
end

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require "active_support/callbacks"
require "active_support/core_ext/module/attribute_accessors_per_thread"
require "concurrent"
module ActionCable
module Server
# Worker used by Server.send_async to do connection work in threads.
class Worker # :nodoc:
include ActiveSupport::Callbacks
thread_mattr_accessor :connection
define_callbacks :work
include ActiveRecordConnectionManagement
attr_reader :executor
def initialize(max_size: 5)
@executor = Concurrent::ThreadPoolExecutor.new(
min_threads: 1,
max_threads: max_size,
max_queue: 0,
)
end
# Stop processing work: any work that has not already started
# running will be discarded from the queue
def halt
@executor.shutdown
end
def stopping?
@executor.shuttingdown?
end
def work(connection)
self.connection = connection
run_callbacks :work do
yield
end
ensure
self.connection = nil
end
def async_exec(receiver, *args, connection:, &block)
async_invoke receiver, :instance_exec, *args, connection: connection, &block
end
def async_invoke(receiver, method, *args, connection: receiver, &block)
@executor.post do
invoke(receiver, method, *args, connection: connection, &block)
end
end
def invoke(receiver, method, *args, connection:, &block)
work(connection) do
begin
receiver.send method, *args, &block
rescue Exception => e
logger.error "There was an exception - #{e.class}(#{e.message})"
logger.error e.backtrace.join("\n")
receiver.handle_exception if receiver.respond_to?(:handle_exception)
end
end
end
private
def logger
ActionCable.server.logger
end
end
end
end

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module ActionCable
module Server
class Worker
module ActiveRecordConnectionManagement
extend ActiveSupport::Concern
included do
if defined?(ActiveRecord::Base)
set_callback :work, :around, :with_database_connections
end
end
def with_database_connections
connection.logger.tag(ActiveRecord::Base.logger) { yield }
end
end
end
end
end

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module ActionCable
module SubscriptionAdapter
extend ActiveSupport::Autoload
autoload :Base
autoload :SubscriberMap
autoload :ChannelPrefix
end
end

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require "action_cable/subscription_adapter/inline"
module ActionCable
module SubscriptionAdapter
class Async < Inline # :nodoc:
private
def new_subscriber_map
AsyncSubscriberMap.new(server.event_loop)
end
class AsyncSubscriberMap < SubscriberMap
def initialize(event_loop)
@event_loop = event_loop
super()
end
def add_subscriber(*)
@event_loop.post { super }
end
def invoke_callback(*)
@event_loop.post { super }
end
end
end
end
end

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module ActionCable
module SubscriptionAdapter
class Base
attr_reader :logger, :server
def initialize(server)
@server = server
@logger = @server.logger
end
def broadcast(channel, payload)
raise NotImplementedError
end
def subscribe(channel, message_callback, success_callback = nil)
raise NotImplementedError
end
def unsubscribe(channel, message_callback)
raise NotImplementedError
end
def shutdown
raise NotImplementedError
end
end
end
end

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module ActionCable
module SubscriptionAdapter
module ChannelPrefix # :nodoc:
def broadcast(channel, payload)
channel = channel_with_prefix(channel)
super
end
def subscribe(channel, callback, success_callback = nil)
channel = channel_with_prefix(channel)
super
end
def unsubscribe(channel, callback)
channel = channel_with_prefix(channel)
super
end
private
# Returns the channel name, including channel_prefix specified in cable.yml
def channel_with_prefix(channel)
[@server.config.cable[:channel_prefix], channel].compact.join(":")
end
end
end
end

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require "thread"
gem "em-hiredis", "~> 0.3.0"
gem "redis", ">= 3", "< 5"
require "em-hiredis"
require "redis"
EventMachine.epoll if EventMachine.epoll?
EventMachine.kqueue if EventMachine.kqueue?
module ActionCable
module SubscriptionAdapter
class EventedRedis < Base # :nodoc:
prepend ChannelPrefix
@@mutex = Mutex.new
# Overwrite this factory method for EventMachine Redis connections if you want to use a different Redis connection library than EM::Hiredis.
# This is needed, for example, when using Makara proxies for distributed Redis.
cattr_accessor(:em_redis_connector) { ->(config) { EM::Hiredis.connect(config[:url]) } }
# Overwrite this factory method for Redis connections if you want to use a different Redis connection library than Redis.
# This is needed, for example, when using Makara proxies for distributed Redis.
cattr_accessor(:redis_connector) { ->(config) { ::Redis.new(url: config[:url]) } }
def initialize(*)
ActiveSupport::Deprecation.warn(<<-MSG.squish)
The "evented_redis" subscription adapter is deprecated and
will be removed in Rails 5.2. Please use the "redis" adapter
instead.
MSG
super
@redis_connection_for_broadcasts = @redis_connection_for_subscriptions = nil
end
def broadcast(channel, payload)
redis_connection_for_broadcasts.publish(channel, payload)
end
def subscribe(channel, message_callback, success_callback = nil)
redis_connection_for_subscriptions.pubsub.subscribe(channel, &message_callback).tap do |result|
result.callback { |reply| success_callback.call } if success_callback
end
end
def unsubscribe(channel, message_callback)
redis_connection_for_subscriptions.pubsub.unsubscribe_proc(channel, message_callback)
end
def shutdown
redis_connection_for_subscriptions.pubsub.close_connection
@redis_connection_for_subscriptions = nil
end
private
def redis_connection_for_subscriptions
ensure_reactor_running
@redis_connection_for_subscriptions || @server.mutex.synchronize do
@redis_connection_for_subscriptions ||= self.class.em_redis_connector.call(@server.config.cable).tap do |redis|
redis.on(:reconnect_failed) do
@logger.error "[ActionCable] Redis reconnect failed."
end
redis.on(:failed) do
@logger.error "[ActionCable] Redis connection has failed."
end
end
end
end
def redis_connection_for_broadcasts
@redis_connection_for_broadcasts || @server.mutex.synchronize do
@redis_connection_for_broadcasts ||= self.class.redis_connector.call(@server.config.cable)
end
end
def ensure_reactor_running
return if EventMachine.reactor_running? && EventMachine.reactor_thread
@@mutex.synchronize do
Thread.new { EventMachine.run } unless EventMachine.reactor_running?
Thread.pass until EventMachine.reactor_running? && EventMachine.reactor_thread
end
end
end
end
end

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module ActionCable
module SubscriptionAdapter
class Inline < Base # :nodoc:
def initialize(*)
super
@subscriber_map = nil
end
def broadcast(channel, payload)
subscriber_map.broadcast(channel, payload)
end
def subscribe(channel, callback, success_callback = nil)
subscriber_map.add_subscriber(channel, callback, success_callback)
end
def unsubscribe(channel, callback)
subscriber_map.remove_subscriber(channel, callback)
end
def shutdown
# nothing to do
end
private
def subscriber_map
@subscriber_map || @server.mutex.synchronize { @subscriber_map ||= new_subscriber_map }
end
def new_subscriber_map
SubscriberMap.new
end
end
end
end

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gem "pg", ">= 0.18", "< 2.0"
require "pg"
require "thread"
module ActionCable
module SubscriptionAdapter
class PostgreSQL < Base # :nodoc:
def initialize(*)
super
@listener = nil
end
def broadcast(channel, payload)
with_connection do |pg_conn|
pg_conn.exec("NOTIFY #{pg_conn.escape_identifier(channel)}, '#{pg_conn.escape_string(payload)}'")
end
end
def subscribe(channel, callback, success_callback = nil)
listener.add_subscriber(channel, callback, success_callback)
end
def unsubscribe(channel, callback)
listener.remove_subscriber(channel, callback)
end
def shutdown
listener.shutdown
end
def with_connection(&block) # :nodoc:
ActiveRecord::Base.connection_pool.with_connection do |ar_conn|
pg_conn = ar_conn.raw_connection
unless pg_conn.is_a?(PG::Connection)
raise "The Active Record database must be PostgreSQL in order to use the PostgreSQL Action Cable storage adapter"
end
yield pg_conn
end
end
private
def listener
@listener || @server.mutex.synchronize { @listener ||= Listener.new(self, @server.event_loop) }
end
class Listener < SubscriberMap
def initialize(adapter, event_loop)
super()
@adapter = adapter
@event_loop = event_loop
@queue = Queue.new
@thread = Thread.new do
Thread.current.abort_on_exception = true
listen
end
end
def listen
@adapter.with_connection do |pg_conn|
catch :shutdown do
loop do
until @queue.empty?
action, channel, callback = @queue.pop(true)
case action
when :listen
pg_conn.exec("LISTEN #{pg_conn.escape_identifier channel}")
@event_loop.post(&callback) if callback
when :unlisten
pg_conn.exec("UNLISTEN #{pg_conn.escape_identifier channel}")
when :shutdown
throw :shutdown
end
end
pg_conn.wait_for_notify(1) do |chan, pid, message|
broadcast(chan, message)
end
end
end
end
end
def shutdown
@queue.push([:shutdown])
Thread.pass while @thread.alive?
end
def add_channel(channel, on_success)
@queue.push([:listen, channel, on_success])
end
def remove_channel(channel)
@queue.push([:unlisten, channel])
end
def invoke_callback(*)
@event_loop.post { super }
end
end
end
end
end

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require "thread"
gem "redis", ">= 3", "< 5"
require "redis"
module ActionCable
module SubscriptionAdapter
class Redis < Base # :nodoc:
prepend ChannelPrefix
# Overwrite this factory method for redis connections if you want to use a different Redis library than Redis.
# This is needed, for example, when using Makara proxies for distributed Redis.
cattr_accessor(:redis_connector) { ->(config) { ::Redis.new(url: config[:url]) } }
def initialize(*)
super
@listener = nil
@redis_connection_for_broadcasts = nil
end
def broadcast(channel, payload)
redis_connection_for_broadcasts.publish(channel, payload)
end
def subscribe(channel, callback, success_callback = nil)
listener.add_subscriber(channel, callback, success_callback)
end
def unsubscribe(channel, callback)
listener.remove_subscriber(channel, callback)
end
def shutdown
@listener.shutdown if @listener
end
def redis_connection_for_subscriptions
redis_connection
end
private
def listener
@listener || @server.mutex.synchronize { @listener ||= Listener.new(self, @server.event_loop) }
end
def redis_connection_for_broadcasts
@redis_connection_for_broadcasts || @server.mutex.synchronize do
@redis_connection_for_broadcasts ||= redis_connection
end
end
def redis_connection
self.class.redis_connector.call(@server.config.cable)
end
class Listener < SubscriberMap
def initialize(adapter, event_loop)
super()
@adapter = adapter
@event_loop = event_loop
@subscribe_callbacks = Hash.new { |h, k| h[k] = [] }
@subscription_lock = Mutex.new
@raw_client = nil
@when_connected = []
@thread = nil
end
def listen(conn)
conn.without_reconnect do
original_client = conn.respond_to?(:_client) ? conn._client : conn.client
conn.subscribe("_action_cable_internal") do |on|
on.subscribe do |chan, count|
@subscription_lock.synchronize do
if count == 1
@raw_client = original_client
until @when_connected.empty?
@when_connected.shift.call
end
end
if callbacks = @subscribe_callbacks[chan]
next_callback = callbacks.shift
@event_loop.post(&next_callback) if next_callback
@subscribe_callbacks.delete(chan) if callbacks.empty?
end
end
end
on.message do |chan, message|
broadcast(chan, message)
end
on.unsubscribe do |chan, count|
if count == 0
@subscription_lock.synchronize do
@raw_client = nil
end
end
end
end
end
end
def shutdown
@subscription_lock.synchronize do
return if @thread.nil?
when_connected do
send_command("unsubscribe")
@raw_client = nil
end
end
Thread.pass while @thread.alive?
end
def add_channel(channel, on_success)
@subscription_lock.synchronize do
ensure_listener_running
@subscribe_callbacks[channel] << on_success
when_connected { send_command("subscribe", channel) }
end
end
def remove_channel(channel)
@subscription_lock.synchronize do
when_connected { send_command("unsubscribe", channel) }
end
end
def invoke_callback(*)
@event_loop.post { super }
end
private
def ensure_listener_running
@thread ||= Thread.new do
Thread.current.abort_on_exception = true
conn = @adapter.redis_connection_for_subscriptions
listen conn
end
end
def when_connected(&block)
if @raw_client
block.call
else
@when_connected << block
end
end
def send_command(*command)
@raw_client.write(command)
very_raw_connection =
@raw_client.connection.instance_variable_defined?(:@connection) &&
@raw_client.connection.instance_variable_get(:@connection)
if very_raw_connection && very_raw_connection.respond_to?(:flush)
very_raw_connection.flush
end
end
end
end
end
end

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debian/gems-compat/actioncable-5.1.6.1/lib/action_cable/subscription_adapter/subscriber_map.rb vendored Normal file
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module ActionCable
module SubscriptionAdapter
class SubscriberMap
def initialize
@subscribers = Hash.new { |h, k| h[k] = [] }
@sync = Mutex.new
end
def add_subscriber(channel, subscriber, on_success)
@sync.synchronize do
new_channel = !@subscribers.key?(channel)
@subscribers[channel] << subscriber
if new_channel
add_channel channel, on_success
elsif on_success
on_success.call
end
end
end
def remove_subscriber(channel, subscriber)
@sync.synchronize do
@subscribers[channel].delete(subscriber)
if @subscribers[channel].empty?
@subscribers.delete channel
remove_channel channel
end
end
end
def broadcast(channel, message)
list = @sync.synchronize do
return if !@subscribers.key?(channel)
@subscribers[channel].dup
end
list.each do |subscriber|
invoke_callback(subscriber, message)
end
end
def add_channel(channel, on_success)
on_success.call if on_success
end
def remove_channel(channel)
end
def invoke_callback(callback, message)
callback.call message
end
end
end
end

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debian/gems-compat/actioncable-5.1.6.1/lib/action_cable/version.rb vendored Normal file
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require_relative "gem_version"
module ActionCable
# Returns the version of the currently loaded Action Cable as a <tt>Gem::Version</tt>
def self.version
gem_version
end
end

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(function() {
var context = this;
(function() {
(function() {
var slice = [].slice;
this.ActionCable = {
INTERNAL: {
"message_types": {
"welcome": "welcome",
"ping": "ping",
"confirmation": "confirm_subscription",
"rejection": "reject_subscription"
},
"default_mount_path": "/cable",
"protocols": ["actioncable-v1-json", "actioncable-unsupported"]
},
WebSocket: window.WebSocket,
logger: window.console,
createConsumer: function(url) {
var ref;
if (url == null) {
url = (ref = this.getConfig("url")) != null ? ref : this.INTERNAL.default_mount_path;
}
return new ActionCable.Consumer(this.createWebSocketURL(url));
},
getConfig: function(name) {
var element;
element = document.head.querySelector("meta[name='action-cable-" + name + "']");
return element != null ? element.getAttribute("content") : void 0;
},
createWebSocketURL: function(url) {
var a;
if (url && !/^wss?:/i.test(url)) {
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() {
return this.debugging = true;
},
stopDebugging: function() {
return this.debugging = null;
},
log: function() {
var messages, ref;
messages = 1 <= arguments.length ? slice.call(arguments, 0) : [];
if (this.debugging) {
messages.push(Date.now());
return (ref = this.logger).log.apply(ref, ["[ActionCable]"].concat(slice.call(messages)));
}
}
};
}).call(this);
}).call(context);
var ActionCable = context.ActionCable;
(function() {
(function() {
var bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
ActionCable.ConnectionMonitor = (function() {
var clamp, now, secondsSince;
ConnectionMonitor.pollInterval = {
min: 3,
max: 30
};
ConnectionMonitor.staleThreshold = 6;
function ConnectionMonitor(connection) {
this.connection = connection;
this.visibilityDidChange = bind(this.visibilityDidChange, this);
this.reconnectAttempts = 0;
}
ConnectionMonitor.prototype.start = function() {
if (!this.isRunning()) {
this.startedAt = now();
delete this.stoppedAt;
this.startPolling();
document.addEventListener("visibilitychange", this.visibilityDidChange);
return ActionCable.log("ConnectionMonitor started. pollInterval = " + (this.getPollInterval()) + " ms");
}
};
ConnectionMonitor.prototype.stop = function() {
if (this.isRunning()) {
this.stoppedAt = now();
this.stopPolling();
document.removeEventListener("visibilitychange", this.visibilityDidChange);
return ActionCable.log("ConnectionMonitor stopped");
}
};
ConnectionMonitor.prototype.isRunning = function() {
return (this.startedAt != null) && (this.stoppedAt == null);
};
ConnectionMonitor.prototype.recordPing = function() {
return this.pingedAt = now();
};
ConnectionMonitor.prototype.recordConnect = function() {
this.reconnectAttempts = 0;
this.recordPing();
delete this.disconnectedAt;
return ActionCable.log("ConnectionMonitor recorded connect");
};
ConnectionMonitor.prototype.recordDisconnect = function() {
this.disconnectedAt = now();
return ActionCable.log("ConnectionMonitor recorded disconnect");
};
ConnectionMonitor.prototype.startPolling = function() {
this.stopPolling();
return this.poll();
};
ConnectionMonitor.prototype.stopPolling = function() {
return clearTimeout(this.pollTimeout);
};
ConnectionMonitor.prototype.poll = function() {
return this.pollTimeout = setTimeout((function(_this) {
return function() {
_this.reconnectIfStale();
return _this.poll();
};
})(this), this.getPollInterval());
};
ConnectionMonitor.prototype.getPollInterval = function() {
var interval, max, min, ref;
ref = this.constructor.pollInterval, min = ref.min, max = ref.max;
interval = 5 * Math.log(this.reconnectAttempts + 1);
return Math.round(clamp(interval, min, max) * 1000);
};
ConnectionMonitor.prototype.reconnectIfStale = function() {
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()) {
return ActionCable.log("ConnectionMonitor skipping reopening recent disconnect");
} else {
ActionCable.log("ConnectionMonitor reopening");
return this.connection.reopen();
}
}
};
ConnectionMonitor.prototype.connectionIsStale = function() {
var ref;
return secondsSince((ref = this.pingedAt) != null ? ref : this.startedAt) > this.constructor.staleThreshold;
};
ConnectionMonitor.prototype.disconnectedRecently = function() {
return this.disconnectedAt && secondsSince(this.disconnectedAt) < this.constructor.staleThreshold;
};
ConnectionMonitor.prototype.visibilityDidChange = function() {
if (document.visibilityState === "visible") {
return setTimeout((function(_this) {
return function() {
if (_this.connectionIsStale() || !_this.connection.isOpen()) {
ActionCable.log("ConnectionMonitor reopening stale connection on visibilitychange. visbilityState = " + document.visibilityState);
return _this.connection.reopen();
}
};
})(this), 200);
}
};
now = function() {
return new Date().getTime();
};
secondsSince = function(time) {
return (now() - time) / 1000;
};
clamp = function(number, min, max) {
return Math.max(min, Math.min(max, number));
};
return ConnectionMonitor;
})();
}).call(this);
(function() {
var i, message_types, protocols, ref, supportedProtocols, unsupportedProtocol,
slice = [].slice,
bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; },
indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };
ref = ActionCable.INTERNAL, message_types = ref.message_types, protocols = ref.protocols;
supportedProtocols = 2 <= protocols.length ? slice.call(protocols, 0, i = protocols.length - 1) : (i = 0, []), unsupportedProtocol = protocols[i++];
ActionCable.Connection = (function() {
Connection.reopenDelay = 500;
function Connection(consumer) {
this.consumer = consumer;
this.open = bind(this.open, this);
this.subscriptions = this.consumer.subscriptions;
this.monitor = new ActionCable.ConnectionMonitor(this);
this.disconnected = true;
}
Connection.prototype.send = function(data) {
if (this.isOpen()) {
this.webSocket.send(JSON.stringify(data));
return true;
} else {
return false;
}
};
Connection.prototype.open = function() {
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 != null) {
this.uninstallEventHandlers();
}
this.webSocket = new ActionCable.WebSocket(this.consumer.url, protocols);
this.installEventHandlers();
this.monitor.start();
return true;
}
};
Connection.prototype.close = function(arg) {
var allowReconnect, ref1;
allowReconnect = (arg != null ? arg : {
allowReconnect: true
}).allowReconnect;
if (!allowReconnect) {
this.monitor.stop();
}
if (this.isActive()) {
return (ref1 = this.webSocket) != null ? ref1.close() : void 0;
}
};
Connection.prototype.reopen = function() {
var error;
ActionCable.log("Reopening WebSocket, current state is " + (this.getState()));
if (this.isActive()) {
try {
return this.close();
} catch (error1) {
error = error1;
return 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() {
var ref1;
return (ref1 = this.webSocket) != null ? ref1.protocol : void 0;
};
Connection.prototype.isOpen = function() {
return this.isState("open");
};
Connection.prototype.isActive = function() {
return this.isState("open", "connecting");
};
Connection.prototype.isProtocolSupported = function() {
var ref1;
return ref1 = this.getProtocol(), indexOf.call(supportedProtocols, ref1) >= 0;
};
Connection.prototype.isState = function() {
var ref1, states;
states = 1 <= arguments.length ? slice.call(arguments, 0) : [];
return ref1 = this.getState(), indexOf.call(states, ref1) >= 0;
};
Connection.prototype.getState = function() {
var ref1, state, value;
for (state in WebSocket) {
value = WebSocket[state];
if (value === ((ref1 = this.webSocket) != null ? ref1.readyState : void 0)) {
return state.toLowerCase();
}
}
return null;
};
Connection.prototype.installEventHandlers = function() {
var eventName, handler;
for (eventName in this.events) {
handler = this.events[eventName].bind(this);
this.webSocket["on" + eventName] = handler;
}
};
Connection.prototype.uninstallEventHandlers = function() {
var eventName;
for (eventName in this.events) {
this.webSocket["on" + eventName] = function() {};
}
};
Connection.prototype.events = {
message: function(event) {
var identifier, message, ref1, type;
if (!this.isProtocolSupported()) {
return;
}
ref1 = JSON.parse(event.data), identifier = ref1.identifier, message = ref1.message, type = ref1.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() {
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(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() {
return ActionCable.log("WebSocket onerror event");
}
};
return Connection;
})();
}).call(this);
(function() {
var slice = [].slice;
ActionCable.Subscriptions = (function() {
function Subscriptions(consumer) {
this.consumer = consumer;
this.subscriptions = [];
}
Subscriptions.prototype.create = function(channelName, mixin) {
var channel, params, subscription;
channel = channelName;
params = typeof channel === "object" ? channel : {
channel: channel
};
subscription = new ActionCable.Subscription(this.consumer, params, mixin);
return this.add(subscription);
};
Subscriptions.prototype.add = function(subscription) {
this.subscriptions.push(subscription);
this.consumer.ensureActiveConnection();
this.notify(subscription, "initialized");
this.sendCommand(subscription, "subscribe");
return subscription;
};
Subscriptions.prototype.remove = function(subscription) {
this.forget(subscription);
if (!this.findAll(subscription.identifier).length) {
this.sendCommand(subscription, "unsubscribe");
}
return subscription;
};
Subscriptions.prototype.reject = function(identifier) {
var i, len, ref, results, subscription;
ref = this.findAll(identifier);
results = [];
for (i = 0, len = ref.length; i < len; i++) {
subscription = ref[i];
this.forget(subscription);
this.notify(subscription, "rejected");
results.push(subscription);
}
return results;
};
Subscriptions.prototype.forget = function(subscription) {
var s;
this.subscriptions = (function() {
var i, len, ref, results;
ref = this.subscriptions;
results = [];
for (i = 0, len = ref.length; i < len; i++) {
s = ref[i];
if (s !== subscription) {
results.push(s);
}
}
return results;
}).call(this);
return subscription;
};
Subscriptions.prototype.findAll = function(identifier) {
var i, len, ref, results, s;
ref = this.subscriptions;
results = [];
for (i = 0, len = ref.length; i < len; i++) {
s = ref[i];
if (s.identifier === identifier) {
results.push(s);
}
}
return results;
};
Subscriptions.prototype.reload = function() {
var i, len, ref, results, subscription;
ref = this.subscriptions;
results = [];
for (i = 0, len = ref.length; i < len; i++) {
subscription = ref[i];
results.push(this.sendCommand(subscription, "subscribe"));
}
return results;
};
Subscriptions.prototype.notifyAll = function() {
var args, callbackName, i, len, ref, results, subscription;
callbackName = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
ref = this.subscriptions;
results = [];
for (i = 0, len = ref.length; i < len; i++) {
subscription = ref[i];
results.push(this.notify.apply(this, [subscription, callbackName].concat(slice.call(args))));
}
return results;
};
Subscriptions.prototype.notify = function() {
var args, callbackName, i, len, results, subscription, subscriptions;
subscription = arguments[0], callbackName = arguments[1], args = 3 <= arguments.length ? slice.call(arguments, 2) : [];
if (typeof subscription === "string") {
subscriptions = this.findAll(subscription);
} else {
subscriptions = [subscription];
}
results = [];
for (i = 0, len = subscriptions.length; i < len; i++) {
subscription = subscriptions[i];
results.push(typeof subscription[callbackName] === "function" ? subscription[callbackName].apply(subscription, args) : void 0);
}
return results;
};
Subscriptions.prototype.sendCommand = function(subscription, command) {
var identifier;
identifier = subscription.identifier;
return this.consumer.send({
command: command,
identifier: identifier
});
};
return Subscriptions;
})();
}).call(this);
(function() {
ActionCable.Subscription = (function() {
var extend;
function Subscription(consumer, params, mixin) {
this.consumer = consumer;
if (params == null) {
params = {};
}
this.identifier = JSON.stringify(params);
extend(this, mixin);
}
Subscription.prototype.perform = function(action, data) {
if (data == null) {
data = {};
}
data.action = action;
return this.send(data);
};
Subscription.prototype.send = function(data) {
return this.consumer.send({
command: "message",
identifier: this.identifier,
data: JSON.stringify(data)
});
};
Subscription.prototype.unsubscribe = function() {
return this.consumer.subscriptions.remove(this);
};
extend = function(object, properties) {
var key, value;
if (properties != null) {
for (key in properties) {
value = properties[key];
object[key] = value;
}
}
return object;
};
return Subscription;
})();
}).call(this);
(function() {
ActionCable.Consumer = (function() {
function Consumer(url) {
this.url = url;
this.subscriptions = new ActionCable.Subscriptions(this);
this.connection = new ActionCable.Connection(this);
}
Consumer.prototype.send = function(data) {
return this.connection.send(data);
};
Consumer.prototype.connect = function() {
return this.connection.open();
};
Consumer.prototype.disconnect = function() {
return this.connection.close({
allowReconnect: false
});
};
Consumer.prototype.ensureActiveConnection = function() {
if (!this.connection.isActive()) {
return this.connection.open();
}
};
return Consumer;
})();
}).call(this);
}).call(this);
if (typeof module === "object" && module.exports) {
module.exports = ActionCable;
} else if (typeof define === "function" && define.amd) {
define(ActionCable);
}
}).call(this);

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debian/gems-compat/actioncable-5.1.6.1/lib/rails/generators/channel/USAGE vendored Normal file
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Description:
============
Stubs out a new cable channel for the server (in Ruby) and client (in CoffeeScript).
Pass the channel name, either CamelCased or under_scored, and an optional list of channel actions as arguments.
Note: Turn on the cable connection in app/assets/javascripts/cable.js after generating any channels.
Example:
========
rails generate channel Chat speak
creates a Chat channel class and CoffeeScript asset:
Channel: app/channels/chat_channel.rb
Assets: app/assets/javascripts/channels/chat.coffee

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debian/gems-compat/actioncable-5.1.6.1/lib/rails/generators/channel/channel_generator.rb vendored Normal file
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module Rails
module Generators
class ChannelGenerator < NamedBase
source_root File.expand_path("../templates", __FILE__)
argument :actions, type: :array, default: [], banner: "method method"
class_option :assets, type: :boolean
check_class_collision suffix: "Channel"
def create_channel_file
template "channel.rb", File.join("app/channels", class_path, "#{file_name}_channel.rb")
if options[:assets]
if behavior == :invoke
template "assets/cable.js", "app/assets/javascripts/cable.js"
end
js_template "assets/channel", File.join("app/assets/javascripts/channels", class_path, "#{file_name}")
end
generate_application_cable_files
end
private
def file_name
@_file_name ||= super.gsub(/_channel/i, "")
end
# FIXME: Change these files to symlinks once RubyGems 2.5.0 is required.
def generate_application_cable_files
return if behavior != :invoke
files = [
"application_cable/channel.rb",
"application_cable/connection.rb"
]
files.each do |name|
path = File.join("app/channels/", name)
template(name, path) if !File.exist?(path)
end
end
end
end
end

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module ApplicationCable
class Channel < ActionCable::Channel::Base
end
end

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module ApplicationCable
class Connection < ActionCable::Connection::Base
end
end

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// Action Cable provides the framework to deal with WebSockets in Rails.
// You can generate new channels where WebSocket features live using the `rails generate channel` command.
//
//= require action_cable
//= require_self
//= require_tree ./channels
(function() {
this.App || (this.App = {});
App.cable = ActionCable.createConsumer();
}).call(this);

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App.<%= class_name.underscore %> = App.cable.subscriptions.create "<%= class_name %>Channel",
connected: ->
# Called when the subscription is ready for use on the server
disconnected: ->
# Called when the subscription has been terminated by the server
received: (data) ->
# Called when there's incoming data on the websocket for this channel
<% actions.each do |action| -%>
<%= action %>: ->
@perform '<%= action %>'
<% end -%>

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App.<%= class_name.underscore %> = App.cable.subscriptions.create("<%= class_name %>Channel", {
connected: function() {
// Called when the subscription is ready for use on the server
},
disconnected: function() {
// Called when the subscription has been terminated by the server
},
received: function(data) {
// Called when there's incoming data on the websocket for this channel
}<%= actions.any? ? ",\n" : '' %>
<% actions.each do |action| -%>
<%=action %>: function() {
return this.perform('<%= action %>');
}<%= action == actions[-1] ? '' : ",\n" %>
<% end -%>
});

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<% module_namespacing do -%>
class <%= class_name %>Channel < ApplicationCable::Channel
def subscribed
# stream_from "some_channel"
end
def unsubscribed
# Any cleanup needed when channel is unsubscribed
end
<% actions.each do |action| -%>
def <%= action %>
end
<% end -%>
end
<% end -%>

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## Rails 5.1.6.1 (November 27, 2018) ##
* No changes.
## Rails 5.1.6 (March 29, 2018) ##
* No changes.
## Rails 5.1.5 (February 14, 2018) ##
* Bring back proc with arity of 1 in `ActionMailer::Base.default` proc
since it was supported in Rails 5.0 but not deprecated.
*Jimmy Bourassa*
## Rails 5.1.4 (September 07, 2017) ##
* No changes.
## Rails 5.1.4.rc1 (August 24, 2017) ##
* No changes.
## Rails 5.1.3 (August 03, 2017) ##
* No changes.
## Rails 5.1.3.rc3 (July 31, 2017) ##
* No changes.
## Rails 5.1.3.rc2 (July 25, 2017) ##
* No changes.
## Rails 5.1.3.rc1 (July 19, 2017) ##
* No changes.
## Rails 5.1.2 (June 26, 2017) ##
* No changes.
## Rails 5.1.1 (May 12, 2017) ##
* No changes.
## Rails 5.1.0 (April 27, 2017) ##
* Add `:args` to `process.action_mailer` event.
*Yuji Yaginuma*
* Add parameterized invocation of mailers as a way to share before filters and defaults between actions.
See `ActionMailer::Parameterized` for a full example of the benefit.
*DHH*
* Allow lambdas to be used as lazy defaults in addition to procs.
*DHH*
* Mime type: allow to custom content type when setting body in headers
and attachments.
Example:
def test_emails
attachments["invoice.pdf"] = "This is test File content"
mail(body: "Hello there", content_type: "text/html")
end
*Minh Quy*
* Exception handling: use `rescue_from` to handle exceptions raised by
mailer actions, by message delivery, and by deferred delivery jobs.
*Jeremy Daer*
Please check [5-0-stable](https://github.com/rails/rails/blob/5-0-stable/actionmailer/CHANGELOG.md) for previous changes.

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Copyright (c) 2004-2017 David Heinemeier Hansson
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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= Action Mailer -- Easy email delivery and testing
Action Mailer is a framework for designing email service layers. These layers
are used to consolidate code for sending out forgotten passwords, welcome
wishes on signup, invoices for billing, and any other use case that requires
a written notification to either a person or another system.
Action Mailer is in essence a wrapper around Action Controller and the
Mail gem. It provides a way to make emails using templates in the same
way that Action Controller renders views using templates.
Additionally, an Action Mailer class can be used to process incoming email,
such as allowing a blog to accept new posts from an email (which could even
have been sent from a phone).
== Sending emails
The framework works by initializing any instance variables you want to be
available in the email template, followed by a call to +mail+ to deliver
the email.
This can be as simple as:
class Notifier < ActionMailer::Base
default from: 'system@loudthinking.com'
def welcome(recipient)
@recipient = recipient
mail(to: recipient,
subject: "[Signed up] Welcome #{recipient}")
end
end
The body of the email is created by using an Action View template (regular
ERB) that has the instance variables that are declared in the mailer action.
So the corresponding body template for the method above could look like this:
Hello there,
Mr. <%= @recipient %>
Thank you for signing up!
If the recipient was given as "david@loudthinking.com", the email
generated would look like this:
Date: Mon, 25 Jan 2010 22:48:09 +1100
From: system@loudthinking.com
To: david@loudthinking.com
Message-ID: <4b5d84f9dd6a5_7380800b81ac29578@void.loudthinking.com.mail>
Subject: [Signed up] Welcome david@loudthinking.com
Mime-Version: 1.0
Content-Type: text/plain;
charset="US-ASCII";
Content-Transfer-Encoding: 7bit
Hello there,
Mr. david@loudthinking.com
Thank you for signing up!
In order to send mails, you simply call the method and then call +deliver_now+ on the return value.
Calling the method returns a Mail Message object:
message = Notifier.welcome("david@loudthinking.com") # => Returns a Mail::Message object
message.deliver_now # => delivers the email
Or you can just chain the methods together like:
Notifier.welcome("david@loudthinking.com").deliver_now # Creates the email and sends it immediately
== Setting defaults
It is possible to set default values that will be used in every method in your
Action Mailer class. To implement this functionality, you just call the public
class method +default+ which you get for free from <tt>ActionMailer::Base</tt>.
This method accepts a Hash as the parameter. You can use any of the headers,
email messages have, like +:from+ as the key. You can also pass in a string as
the key, like "Content-Type", but Action Mailer does this out of the box for you,
so you won't need to worry about that. Finally, it is also possible to pass in a
Proc that will get evaluated when it is needed.
Note that every value you set with this method will get overwritten if you use the
same key in your mailer method.
Example:
class AuthenticationMailer < ActionMailer::Base
default from: "awesome@application.com", subject: Proc.new { "E-mail was generated at #{Time.now}" }
.....
end
== Receiving emails
To receive emails, you need to implement a public instance method called
+receive+ that takes an email object as its single parameter. The Action Mailer
framework has a corresponding class method, which is also called +receive+, that
accepts a raw, unprocessed email as a string, which it then turns into the email
object and calls the receive instance method.
Example:
class Mailman < ActionMailer::Base
def receive(email)
page = Page.find_by(address: email.to.first)
page.emails.create(
subject: email.subject, body: email.body
)
if email.has_attachments?
email.attachments.each do |attachment|
page.attachments.create({
file: attachment, description: email.subject
})
end
end
end
end
This Mailman can be the target for Postfix or other MTAs. In Rails, you would use
the runner in the trivial case like this:
rails runner 'Mailman.receive(STDIN.read)'
However, invoking Rails in the runner for each mail to be received is very
resource intensive. A single instance of Rails should be run within a daemon, if
it is going to process more than just a limited amount of email.
== Configuration
The Base class has the full list of configuration options. Here's an example:
ActionMailer::Base.smtp_settings = {
address: 'smtp.yourserver.com', # default: localhost
port: '25', # default: 25
user_name: 'user',
password: 'pass',
authentication: :plain # :plain, :login or :cram_md5
}
== Download and installation
The latest version of Action Mailer can be installed with RubyGems:
$ gem install actionmailer
Source code can be downloaded as part of the Rails project on GitHub
* https://github.com/rails/rails/tree/master/actionmailer
== License
Action Mailer is released under the MIT license:
* http://www.opensource.org/licenses/MIT
== Support
API documentation is at
* http://api.rubyonrails.org
Bug reports can be filed for the Ruby on Rails project here:
* https://github.com/rails/rails/issues
Feature requests should be discussed on the rails-core mailing list here:
* https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core

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#########################################################
# This file has been automatically generated by gem2tgz #
#########################################################
# -*- encoding: utf-8 -*-
# stub: actionmailer 5.1.6.1 ruby lib
Gem::Specification.new do |s|
s.name = "actionmailer".freeze
s.version = "5.1.6.1"
s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
s.metadata = { "changelog_uri" => "https://github.com/rails/rails/blob/v5.1.6.1/actionmailer/CHANGELOG.md", "source_code_uri" => "https://github.com/rails/rails/tree/v5.1.6.1/actionmailer" } if s.respond_to? :metadata=
s.require_paths = ["lib".freeze]
s.authors = ["David Heinemeier Hansson".freeze]
s.date = "2018-11-27"
s.description = "Email on Rails. Compose, deliver, receive, and test emails using the familiar controller/view pattern. First-class support for multipart email and attachments.".freeze
s.email = "david@loudthinking.com".freeze
s.files = ["CHANGELOG.md".freeze, "MIT-LICENSE".freeze, "README.rdoc".freeze, "lib/action_mailer.rb".freeze, "lib/action_mailer/base.rb".freeze, "lib/action_mailer/collector.rb".freeze, "lib/action_mailer/delivery_job.rb".freeze, "lib/action_mailer/delivery_methods.rb".freeze, "lib/action_mailer/gem_version.rb".freeze, "lib/action_mailer/inline_preview_interceptor.rb".freeze, "lib/action_mailer/log_subscriber.rb".freeze, "lib/action_mailer/mail_helper.rb".freeze, "lib/action_mailer/message_delivery.rb".freeze, "lib/action_mailer/parameterized.rb".freeze, "lib/action_mailer/preview.rb".freeze, "lib/action_mailer/railtie.rb".freeze, "lib/action_mailer/rescuable.rb".freeze, "lib/action_mailer/test_case.rb".freeze, "lib/action_mailer/test_helper.rb".freeze, "lib/action_mailer/version.rb".freeze, "lib/rails/generators/mailer/USAGE".freeze, "lib/rails/generators/mailer/mailer_generator.rb".freeze, "lib/rails/generators/mailer/templates/application_mailer.rb".freeze, "lib/rails/generators/mailer/templates/mailer.rb".freeze]
s.homepage = "http://rubyonrails.org".freeze
s.licenses = ["MIT".freeze]
s.required_ruby_version = Gem::Requirement.new(">= 2.2.2".freeze)
s.requirements = ["none".freeze]
s.rubygems_version = "2.7.6".freeze
s.summary = "Email composition, delivery, and receiving framework (part of Rails).".freeze
if s.respond_to? :specification_version then
s.specification_version = 4
if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
s.add_runtime_dependency(%q<actionpack>.freeze, ["= 5.1.6.1"])
s.add_runtime_dependency(%q<actionview>.freeze, ["= 5.1.6.1"])
s.add_runtime_dependency(%q<activejob>.freeze, ["= 5.1.6.1"])
s.add_runtime_dependency(%q<mail>.freeze, [">= 2.5.4", "~> 2.5"])
s.add_runtime_dependency(%q<rails-dom-testing>.freeze, ["~> 2.0"])
else
s.add_dependency(%q<actionpack>.freeze, ["= 5.1.6.1"])
s.add_dependency(%q<actionview>.freeze, ["= 5.1.6.1"])
s.add_dependency(%q<activejob>.freeze, ["= 5.1.6.1"])
s.add_dependency(%q<mail>.freeze, [">= 2.5.4", "~> 2.5"])
s.add_dependency(%q<rails-dom-testing>.freeze, ["~> 2.0"])
end
else
s.add_dependency(%q<actionpack>.freeze, ["= 5.1.6.1"])
s.add_dependency(%q<actionview>.freeze, ["= 5.1.6.1"])
s.add_dependency(%q<activejob>.freeze, ["= 5.1.6.1"])
s.add_dependency(%q<mail>.freeze, [">= 2.5.4", "~> 2.5"])
s.add_dependency(%q<rails-dom-testing>.freeze, ["~> 2.0"])
end
end

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#--
# Copyright (c) 2004-2017 David Heinemeier Hansson
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#++
require "abstract_controller"
require "action_mailer/version"
# Common Active Support usage in Action Mailer
require "active_support"
require "active_support/rails"
require "active_support/core_ext/class"
require "active_support/core_ext/module/attr_internal"
require "active_support/core_ext/string/inflections"
require "active_support/lazy_load_hooks"
module ActionMailer
extend ::ActiveSupport::Autoload
eager_autoload do
autoload :Collector
end
autoload :Base
autoload :DeliveryMethods
autoload :InlinePreviewInterceptor
autoload :MailHelper
autoload :Parameterized
autoload :Preview
autoload :Previews, "action_mailer/preview"
autoload :TestCase
autoload :TestHelper
autoload :MessageDelivery
autoload :DeliveryJob
end
autoload :Mime, "action_dispatch/http/mime_type"
ActiveSupport.on_load(:action_view) do
ActionView::Base.default_formats ||= Mime::SET.symbols
ActionView::Template::Types.delegate_to Mime
end

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require "mail"
require "action_mailer/collector"
require "active_support/core_ext/string/inflections"
require "active_support/core_ext/hash/except"
require "active_support/core_ext/module/anonymous"
require "action_mailer/log_subscriber"
require "action_mailer/rescuable"
module ActionMailer
# Action Mailer allows you to send email from your application using a mailer model and views.
#
# = Mailer Models
#
# To use Action Mailer, you need to create a mailer model.
#
# $ rails generate mailer Notifier
#
# The generated model inherits from <tt>ApplicationMailer</tt> which in turn
# inherits from <tt>ActionMailer::Base</tt>. A mailer model defines methods
# used to generate an email message. In these methods, you can setup variables to be used in
# the mailer views, options on the mail itself such as the <tt>:from</tt> address, and attachments.
#
# class ApplicationMailer < ActionMailer::Base
# default from: 'from@example.com'
# layout 'mailer'
# end
#
# class NotifierMailer < ApplicationMailer
# default from: 'no-reply@example.com',
# return_path: 'system@example.com'
#
# def welcome(recipient)
# @account = recipient
# mail(to: recipient.email_address_with_name,
# bcc: ["bcc@example.com", "Order Watcher <watcher@example.com>"])
# end
# end
#
# Within the mailer method, you have access to the following methods:
#
# * <tt>attachments[]=</tt> - Allows you to add attachments to your email in an intuitive
# manner; <tt>attachments['filename.png'] = File.read('path/to/filename.png')</tt>
#
# * <tt>attachments.inline[]=</tt> - Allows you to add an inline attachment to your email
# in the same manner as <tt>attachments[]=</tt>
#
# * <tt>headers[]=</tt> - Allows you to specify any header field in your email such
# as <tt>headers['X-No-Spam'] = 'True'</tt>. Note that declaring a header multiple times
# will add many fields of the same name. Read #headers doc for more information.
#
# * <tt>headers(hash)</tt> - Allows you to specify multiple headers in your email such
# as <tt>headers({'X-No-Spam' => 'True', 'In-Reply-To' => '1234@message.id'})</tt>
#
# * <tt>mail</tt> - Allows you to specify email to be sent.
#
# The hash passed to the mail method allows you to specify any header that a <tt>Mail::Message</tt>
# will accept (any valid email header including optional fields).
#
# The mail method, if not passed a block, will inspect your views and send all the views with
# the same name as the method, so the above action would send the +welcome.text.erb+ view
# file as well as the +welcome.html.erb+ view file in a +multipart/alternative+ email.
#
# If you want to explicitly render only certain templates, pass a block:
#
# mail(to: user.email) do |format|
# format.text
# format.html
# end
#
# The block syntax is also useful in providing information specific to a part:
#
# mail(to: user.email) do |format|
# format.text(content_transfer_encoding: "base64")
# format.html
# end
#
# Or even to render a special view:
#
# mail(to: user.email) do |format|
# format.text
# format.html { render "some_other_template" }
# end
#
# = Mailer views
#
# Like Action Controller, each mailer class has a corresponding view directory in which each
# method of the class looks for a template with its name.
#
# To define a template to be used with a mailer, create an <tt>.erb</tt> file with the same
# name as the method in your mailer model. For example, in the mailer defined above, the template at
# <tt>app/views/notifier_mailer/welcome.text.erb</tt> would be used to generate the email.
#
# Variables defined in the methods of your mailer model are accessible as instance variables in their
# corresponding view.
#
# Emails by default are sent in plain text, so a sample view for our model example might look like this:
#
# Hi <%= @account.name %>,
# Thanks for joining our service! Please check back often.
#
# You can even use Action View helpers in these views. For example:
#
# You got a new note!
# <%= truncate(@note.body, length: 25) %>
#
# If you need to access the subject, from or the recipients in the view, you can do that through message object:
#
# You got a new note from <%= message.from %>!
# <%= truncate(@note.body, length: 25) %>
#
#
# = Generating URLs
#
# URLs can be generated in mailer views using <tt>url_for</tt> or named routes. Unlike controllers from
# Action Pack, the mailer instance doesn't have any context about the incoming request, so you'll need
# to provide all of the details needed to generate a URL.
#
# When using <tt>url_for</tt> you'll need to provide the <tt>:host</tt>, <tt>:controller</tt>, and <tt>:action</tt>:
#
# <%= url_for(host: "example.com", controller: "welcome", action: "greeting") %>
#
# When using named routes you only need to supply the <tt>:host</tt>:
#
# <%= users_url(host: "example.com") %>
#
# You should use the <tt>named_route_url</tt> style (which generates absolute URLs) and avoid using the
# <tt>named_route_path</tt> style (which generates relative URLs), since clients reading the mail will
# have no concept of a current URL from which to determine a relative path.
#
# It is also possible to set a default host that will be used in all mailers by setting the <tt>:host</tt>
# option as a configuration option in <tt>config/application.rb</tt>:
#
# config.action_mailer.default_url_options = { host: "example.com" }
#
# You can also define a <tt>default_url_options</tt> method on individual mailers to override these
# default settings per-mailer.
#
# By default when <tt>config.force_ssl</tt> is true, URLs generated for hosts will use the HTTPS protocol.
#
# = Sending mail
#
# Once a mailer action and template are defined, you can deliver your message or defer its creation and
# delivery for later:
#
# NotifierMailer.welcome(User.first).deliver_now # sends the email
# mail = NotifierMailer.welcome(User.first) # => an ActionMailer::MessageDelivery object
# mail.deliver_now # generates and sends the email now
#
# The <tt>ActionMailer::MessageDelivery</tt> class is a wrapper around a delegate that will call
# your method to generate the mail. If you want direct access to the delegator, or <tt>Mail::Message</tt>,
# you can call the <tt>message</tt> method on the <tt>ActionMailer::MessageDelivery</tt> object.
#
# NotifierMailer.welcome(User.first).message # => a Mail::Message object
#
# Action Mailer is nicely integrated with Active Job so you can generate and send emails in the background
# (example: outside of the request-response cycle, so the user doesn't have to wait on it):
#
# NotifierMailer.welcome(User.first).deliver_later # enqueue the email sending to Active Job
#
# Note that <tt>deliver_later</tt> will execute your method from the background job.
#
# You never instantiate your mailer class. Rather, you just call the method you defined on the class itself.
# All instance methods are expected to return a message object to be sent.
#
# = Multipart Emails
#
# Multipart messages can also be used implicitly because Action Mailer will automatically detect and use
# multipart templates, where each template is named after the name of the action, followed by the content
# type. Each such detected template will be added to the message, as a separate part.
#
# For example, if the following templates exist:
# * signup_notification.text.erb
# * signup_notification.html.erb
# * signup_notification.xml.builder
# * signup_notification.yml.erb
#
# Each would be rendered and added as a separate part to the message, with the corresponding content
# type. The content type for the entire message is automatically set to <tt>multipart/alternative</tt>,
# which indicates that the email contains multiple different representations of the same email
# body. The same instance variables defined in the action are passed to all email templates.
#
# Implicit template rendering is not performed if any attachments or parts have been added to the email.
# This means that you'll have to manually add each part to the email and set the content type of the email
# to <tt>multipart/alternative</tt>.
#
# = Attachments
#
# Sending attachment in emails is easy:
#
# class NotifierMailer < ApplicationMailer
# def welcome(recipient)
# attachments['free_book.pdf'] = File.read('path/to/file.pdf')
# mail(to: recipient, subject: "New account information")
# end
# end
#
# Which will (if it had both a <tt>welcome.text.erb</tt> and <tt>welcome.html.erb</tt>
# template in the view directory), send a complete <tt>multipart/mixed</tt> email with two parts,
# the first part being a <tt>multipart/alternative</tt> with the text and HTML email parts inside,
# and the second being a <tt>application/pdf</tt> with a Base64 encoded copy of the file.pdf book
# with the filename +free_book.pdf+.
#
# If you need to send attachments with no content, you need to create an empty view for it,
# or add an empty body parameter like this:
#
# class NotifierMailer < ApplicationMailer
# def welcome(recipient)
# attachments['free_book.pdf'] = File.read('path/to/file.pdf')
# mail(to: recipient, subject: "New account information", body: "")
# end
# end
#
# You can also send attachments with html template, in this case you need to add body, attachments,
# and custom content type like this:
#
# class NotifierMailer < ApplicationMailer
# def welcome(recipient)
# attachments["free_book.pdf"] = File.read("path/to/file.pdf")
# mail(to: recipient,
# subject: "New account information",
# content_type: "text/html",
# body: "<html><body>Hello there</body></html>")
# end
# end
#
# = Inline Attachments
#
# You can also specify that a file should be displayed inline with other HTML. This is useful
# if you want to display a corporate logo or a photo.
#
# class NotifierMailer < ApplicationMailer
# def welcome(recipient)
# attachments.inline['photo.png'] = File.read('path/to/photo.png')
# mail(to: recipient, subject: "Here is what we look like")
# end
# end
#
# And then to reference the image in the view, you create a <tt>welcome.html.erb</tt> file and
# make a call to +image_tag+ passing in the attachment you want to display and then call
# +url+ on the attachment to get the relative content id path for the image source:
#
# <h1>Please Don't Cringe</h1>
#
# <%= image_tag attachments['photo.png'].url -%>
#
# As we are using Action View's +image_tag+ method, you can pass in any other options you want:
#
# <h1>Please Don't Cringe</h1>
#
# <%= image_tag attachments['photo.png'].url, alt: 'Our Photo', class: 'photo' -%>
#
# = Observing and Intercepting Mails
#
# Action Mailer provides hooks into the Mail observer and interceptor methods. These allow you to
# register classes that are called during the mail delivery life cycle.
#
# An observer class must implement the <tt>:delivered_email(message)</tt> method which will be
# called once for every email sent after the email has been sent.
#
# An interceptor class must implement the <tt>:delivering_email(message)</tt> method which will be
# called before the email is sent, allowing you to make modifications to the email before it hits
# the delivery agents. Your class should make any needed modifications directly to the passed
# in <tt>Mail::Message</tt> instance.
#
# = Default Hash
#
# Action Mailer provides some intelligent defaults for your emails, these are usually specified in a
# default method inside the class definition:
#
# class NotifierMailer < ApplicationMailer
# default sender: 'system@example.com'
# end
#
# You can pass in any header value that a <tt>Mail::Message</tt> accepts. Out of the box,
# <tt>ActionMailer::Base</tt> sets the following:
#
# * <tt>mime_version: "1.0"</tt>
# * <tt>charset: "UTF-8"</tt>
# * <tt>content_type: "text/plain"</tt>
# * <tt>parts_order: [ "text/plain", "text/enriched", "text/html" ]</tt>
#
# <tt>parts_order</tt> and <tt>charset</tt> are not actually valid <tt>Mail::Message</tt> header fields,
# but Action Mailer translates them appropriately and sets the correct values.
#
# As you can pass in any header, you need to either quote the header as a string, or pass it in as
# an underscored symbol, so the following will work:
#
# class NotifierMailer < ApplicationMailer
# default 'Content-Transfer-Encoding' => '7bit',
# content_description: 'This is a description'
# end
#
# Finally, Action Mailer also supports passing <tt>Proc</tt> and <tt>Lambda</tt> objects into the default hash,
# so you can define methods that evaluate as the message is being generated:
#
# class NotifierMailer < ApplicationMailer
# default 'X-Special-Header' => Proc.new { my_method }, to: -> { @inviter.email_address }
#
# private
# def my_method
# 'some complex call'
# end
# end
#
# Note that the proc/lambda is evaluated right at the start of the mail message generation, so if you
# set something in the default hash using a proc, and then set the same thing inside of your
# mailer method, it will get overwritten by the mailer method.
#
# It is also possible to set these default options that will be used in all mailers through
# the <tt>default_options=</tt> configuration in <tt>config/application.rb</tt>:
#
# config.action_mailer.default_options = { from: "no-reply@example.org" }
#
# = Callbacks
#
# You can specify callbacks using before_action and after_action for configuring your messages.
# This may be useful, for example, when you want to add default inline attachments for all
# messages sent out by a certain mailer class:
#
# class NotifierMailer < ApplicationMailer
# before_action :add_inline_attachment!
#
# def welcome
# mail
# end
#
# private
# def add_inline_attachment!
# attachments.inline["footer.jpg"] = File.read('/path/to/filename.jpg')
# end
# end
#
# Callbacks in Action Mailer are implemented using
# <tt>AbstractController::Callbacks</tt>, so you can define and configure
# callbacks in the same manner that you would use callbacks in classes that
# inherit from <tt>ActionController::Base</tt>.
#
# Note that unless you have a specific reason to do so, you should prefer
# using <tt>before_action</tt> rather than <tt>after_action</tt> in your
# Action Mailer classes so that headers are parsed properly.
#
# = Previewing emails
#
# You can preview your email templates visually by adding a mailer preview file to the
# <tt>ActionMailer::Base.preview_path</tt>. Since most emails do something interesting
# with database data, you'll need to write some scenarios to load messages with fake data:
#
# class NotifierMailerPreview < ActionMailer::Preview
# def welcome
# NotifierMailer.welcome(User.first)
# end
# end
#
# Methods must return a <tt>Mail::Message</tt> object which can be generated by calling the mailer
# method without the additional <tt>deliver_now</tt> / <tt>deliver_later</tt>. The location of the
# mailer previews directory can be configured using the <tt>preview_path</tt> option which has a default
# of <tt>test/mailers/previews</tt>:
#
# config.action_mailer.preview_path = "#{Rails.root}/lib/mailer_previews"
#
# An overview of all previews is accessible at <tt>http://localhost:3000/rails/mailers</tt>
# on a running development server instance.
#
# Previews can also be intercepted in a similar manner as deliveries can be by registering
# a preview interceptor that has a <tt>previewing_email</tt> method:
#
# class CssInlineStyler
# def self.previewing_email(message)
# # inline CSS styles
# end
# end
#
# config.action_mailer.preview_interceptors :css_inline_styler
#
# Note that interceptors need to be registered both with <tt>register_interceptor</tt>
# and <tt>register_preview_interceptor</tt> if they should operate on both sending and
# previewing emails.
#
# = Configuration options
#
# These options are specified on the class level, like
# <tt>ActionMailer::Base.raise_delivery_errors = true</tt>
#
# * <tt>default_options</tt> - You can pass this in at a class level as well as within the class itself as
# per the above section.
#
# * <tt>logger</tt> - the logger is used for generating information on the mailing run if available.
# Can be set to +nil+ for no logging. Compatible with both Ruby's own +Logger+ and Log4r loggers.
#
# * <tt>smtp_settings</tt> - Allows detailed configuration for <tt>:smtp</tt> delivery method:
# * <tt>:address</tt> - Allows you to use a remote mail server. Just change it from its default
# "localhost" setting.
# * <tt>:port</tt> - On the off chance that your mail server doesn't run on port 25, you can change it.
# * <tt>:domain</tt> - If you need to specify a HELO domain, you can do it here.
# * <tt>:user_name</tt> - If your mail server requires authentication, set the username in this setting.
# * <tt>:password</tt> - If your mail server requires authentication, set the password in this setting.
# * <tt>:authentication</tt> - If your mail server requires authentication, you need to specify the
# authentication type here.
# This is a symbol and one of <tt>:plain</tt> (will send the password Base64 encoded), <tt>:login</tt> (will
# send the password Base64 encoded) or <tt>:cram_md5</tt> (combines a Challenge/Response mechanism to exchange
# information and a cryptographic Message Digest 5 algorithm to hash important information)
# * <tt>:enable_starttls_auto</tt> - Detects if STARTTLS is enabled in your SMTP server and starts
# to use it. Defaults to <tt>true</tt>.
# * <tt>:openssl_verify_mode</tt> - When using TLS, you can set how OpenSSL checks the certificate. This is
# really useful if you need to validate a self-signed and/or a wildcard certificate. You can use the name
# of an OpenSSL verify constant (<tt>'none'</tt> or <tt>'peer'</tt>) or directly the constant
# (<tt>OpenSSL::SSL::VERIFY_NONE</tt> or <tt>OpenSSL::SSL::VERIFY_PEER</tt>).
# <tt>:ssl/:tls</tt> Enables the SMTP connection to use SMTP/TLS (SMTPS: SMTP over direct TLS connection)
#
# * <tt>sendmail_settings</tt> - Allows you to override options for the <tt>:sendmail</tt> delivery method.
# * <tt>:location</tt> - The location of the sendmail executable. Defaults to <tt>/usr/sbin/sendmail</tt>.
# * <tt>:arguments</tt> - The command line arguments. Defaults to <tt>-i</tt> with <tt>-f sender@address</tt>
# added automatically before the message is sent.
#
# * <tt>file_settings</tt> - Allows you to override options for the <tt>:file</tt> delivery method.
# * <tt>:location</tt> - The directory into which emails will be written. Defaults to the application
# <tt>tmp/mails</tt>.
#
# * <tt>raise_delivery_errors</tt> - Whether or not errors should be raised if the email fails to be delivered.
#
# * <tt>delivery_method</tt> - Defines a delivery method. Possible values are <tt>:smtp</tt> (default),
# <tt>:sendmail</tt>, <tt>:test</tt>, and <tt>:file</tt>. Or you may provide a custom delivery method
# object e.g. +MyOwnDeliveryMethodClass+. See the Mail gem documentation on the interface you need to
# implement for a custom delivery agent.
#
# * <tt>perform_deliveries</tt> - Determines whether emails are actually sent from Action Mailer when you
# call <tt>.deliver</tt> on an email message or on an Action Mailer method. This is on by default but can
# be turned off to aid in functional testing.
#
# * <tt>deliveries</tt> - Keeps an array of all the emails sent out through the Action Mailer with
# <tt>delivery_method :test</tt>. Most useful for unit and functional testing.
#
# * <tt>deliver_later_queue_name</tt> - The name of the queue used with <tt>deliver_later</tt>. Defaults to +mailers+.
class Base < AbstractController::Base
include DeliveryMethods
include Rescuable
include Parameterized
include Previews
abstract!
include AbstractController::Rendering
include AbstractController::Logger
include AbstractController::Helpers
include AbstractController::Translation
include AbstractController::AssetPaths
include AbstractController::Callbacks
include AbstractController::Caching
include ActionView::Layouts
PROTECTED_IVARS = AbstractController::Rendering::DEFAULT_PROTECTED_INSTANCE_VARIABLES + [:@_action_has_layout]
def _protected_ivars # :nodoc:
PROTECTED_IVARS
end
helper ActionMailer::MailHelper
class_attribute :default_params
self.default_params = {
mime_version: "1.0",
charset: "UTF-8",
content_type: "text/plain",
parts_order: [ "text/plain", "text/enriched", "text/html" ]
}.freeze
class << self
# Register one or more Observers which will be notified when mail is delivered.
def register_observers(*observers)
observers.flatten.compact.each { |observer| register_observer(observer) }
end
# Register one or more Interceptors which will be called before mail is sent.
def register_interceptors(*interceptors)
interceptors.flatten.compact.each { |interceptor| register_interceptor(interceptor) }
end
# Register an Observer which will be notified when mail is delivered.
# Either a class, string or symbol can be passed in as the Observer.
# If a string or symbol is passed in it will be camelized and constantized.
def register_observer(observer)
Mail.register_observer(observer_class_for(observer))
end
# Register an Interceptor which will be called before mail is sent.
# Either a class, string or symbol can be passed in as the Interceptor.
# If a string or symbol is passed in it will be camelized and constantized.
def register_interceptor(interceptor)
Mail.register_interceptor(observer_class_for(interceptor))
end
def observer_class_for(value) # :nodoc:
case value
when String, Symbol
value.to_s.camelize.constantize
else
value
end
end
private :observer_class_for
# Returns the name of the current mailer. This method is also being used as a path for a view lookup.
# If this is an anonymous mailer, this method will return +anonymous+ instead.
def mailer_name
@mailer_name ||= anonymous? ? "anonymous" : name.underscore
end
# Allows to set the name of current mailer.
attr_writer :mailer_name
alias :controller_path :mailer_name
# Sets the defaults through app configuration:
#
# config.action_mailer.default(from: "no-reply@example.org")
#
# Aliased by ::default_options=
def default(value = nil)
self.default_params = default_params.merge(value).freeze if value
default_params
end
# Allows to set defaults through app configuration:
#
# config.action_mailer.default_options = { from: "no-reply@example.org" }
alias :default_options= :default
# Receives a raw email, parses it into an email object, decodes it,
# instantiates a new mailer, and passes the email object to the mailer
# object's +receive+ method.
#
# If you want your mailer to be able to process incoming messages, you'll
# need to implement a +receive+ method that accepts the raw email string
# as a parameter:
#
# class MyMailer < ActionMailer::Base
# def receive(mail)
# # ...
# end
# end
def receive(raw_mail)
ActiveSupport::Notifications.instrument("receive.action_mailer") do |payload|
mail = Mail.new(raw_mail)
set_payload_for_mail(payload, mail)
new.receive(mail)
end
end
# Wraps an email delivery inside of <tt>ActiveSupport::Notifications</tt> instrumentation.
#
# This method is actually called by the <tt>Mail::Message</tt> object itself
# through a callback when you call <tt>:deliver</tt> on the <tt>Mail::Message</tt>,
# calling +deliver_mail+ directly and passing a <tt>Mail::Message</tt> will do
# nothing except tell the logger you sent the email.
def deliver_mail(mail) #:nodoc:
ActiveSupport::Notifications.instrument("deliver.action_mailer") do |payload|
set_payload_for_mail(payload, mail)
yield # Let Mail do the delivery actions
end
end
private
def set_payload_for_mail(payload, mail)
payload[:mailer] = name
payload[:message_id] = mail.message_id
payload[:subject] = mail.subject
payload[:to] = mail.to
payload[:from] = mail.from
payload[:bcc] = mail.bcc if mail.bcc.present?
payload[:cc] = mail.cc if mail.cc.present?
payload[:date] = mail.date
payload[:mail] = mail.encoded
end
def method_missing(method_name, *args)
if action_methods.include?(method_name.to_s)
MessageDelivery.new(self, method_name, *args)
else
super
end
end
def respond_to_missing?(method, include_all = false)
action_methods.include?(method.to_s) || super
end
end
attr_internal :message
# Instantiate a new mailer object. If +method_name+ is not +nil+, the mailer
# will be initialized according to the named method. If not, the mailer will
# remain uninitialized (useful when you only need to invoke the "receive"
# method, for instance).
def initialize
super()
@_mail_was_called = false
@_message = Mail.new
end
def process(method_name, *args) #:nodoc:
payload = {
mailer: self.class.name,
action: method_name,
args: args
}
ActiveSupport::Notifications.instrument("process.action_mailer", payload) do
super
@_message = NullMail.new unless @_mail_was_called
end
end
class NullMail #:nodoc:
def body; "" end
def header; {} end
def respond_to?(string, include_all = false)
true
end
def method_missing(*args)
nil
end
end
# Returns the name of the mailer object.
def mailer_name
self.class.mailer_name
end
# Allows you to pass random and unusual headers to the new <tt>Mail::Message</tt>
# object which will add them to itself.
#
# headers['X-Special-Domain-Specific-Header'] = "SecretValue"
#
# You can also pass a hash into headers of header field names and values,
# which will then be set on the <tt>Mail::Message</tt> object:
#
# headers 'X-Special-Domain-Specific-Header' => "SecretValue",
# 'In-Reply-To' => incoming.message_id
#
# The resulting <tt>Mail::Message</tt> will have the following in its header:
#
# X-Special-Domain-Specific-Header: SecretValue
#
# Note about replacing already defined headers:
#
# * +subject+
# * +sender+
# * +from+
# * +to+
# * +cc+
# * +bcc+
# * +reply-to+
# * +orig-date+
# * +message-id+
# * +references+
#
# Fields can only appear once in email headers while other fields such as
# <tt>X-Anything</tt> can appear multiple times.
#
# If you want to replace any header which already exists, first set it to
# +nil+ in order to reset the value otherwise another field will be added
# for the same header.
def headers(args = nil)
if args
@_message.headers(args)
else
@_message
end
end
# Allows you to add attachments to an email, like so:
#
# mail.attachments['filename.jpg'] = File.read('/path/to/filename.jpg')
#
# If you do this, then Mail will take the file name and work out the mime type.
# It will also set the Content-Type, Content-Disposition, Content-Transfer-Encoding
# and encode the contents of the attachment in Base64.
#
# You can also specify overrides if you want by passing a hash instead of a string:
#
# mail.attachments['filename.jpg'] = {mime_type: 'application/gzip',
# content: File.read('/path/to/filename.jpg')}
#
# If you want to use encoding other than Base64 then you will need to pass encoding
# type along with the pre-encoded content as Mail doesn't know how to decode the
# data:
#
# file_content = SpecialEncode(File.read('/path/to/filename.jpg'))
# mail.attachments['filename.jpg'] = {mime_type: 'application/gzip',
# encoding: 'SpecialEncoding',
# content: file_content }
#
# You can also search for specific attachments:
#
# # By Filename
# mail.attachments['filename.jpg'] # => Mail::Part object or nil
#
# # or by index
# mail.attachments[0] # => Mail::Part (first attachment)
#
def attachments
if @_mail_was_called
LateAttachmentsProxy.new(@_message.attachments)
else
@_message.attachments
end
end
class LateAttachmentsProxy < SimpleDelegator
def inline; _raise_error end
def []=(_name, _content); _raise_error end
private
def _raise_error
raise RuntimeError, "Can't add attachments after `mail` was called.\n" \
"Make sure to use `attachments[]=` before calling `mail`."
end
end
# The main method that creates the message and renders the email templates. There are
# two ways to call this method, with a block, or without a block.
#
# It accepts a headers hash. This hash allows you to specify
# the most used headers in an email message, these are:
#
# * +:subject+ - The subject of the message, if this is omitted, Action Mailer will
# ask the Rails I18n class for a translated +:subject+ in the scope of
# <tt>[mailer_scope, action_name]</tt> or if this is missing, will translate the
# humanized version of the +action_name+
# * +:to+ - Who the message is destined for, can be a string of addresses, or an array
# of addresses.
# * +:from+ - Who the message is from
# * +:cc+ - Who you would like to Carbon-Copy on this email, can be a string of addresses,
# or an array of addresses.
# * +:bcc+ - Who you would like to Blind-Carbon-Copy on this email, can be a string of
# addresses, or an array of addresses.
# * +:reply_to+ - Who to set the Reply-To header of the email to.
# * +:date+ - The date to say the email was sent on.
#
# You can set default values for any of the above headers (except +:date+)
# by using the ::default class method:
#
# class Notifier < ActionMailer::Base
# default from: 'no-reply@test.lindsaar.net',
# bcc: 'email_logger@test.lindsaar.net',
# reply_to: 'bounces@test.lindsaar.net'
# end
#
# If you need other headers not listed above, you can either pass them in
# as part of the headers hash or use the <tt>headers['name'] = value</tt>
# method.
#
# When a +:return_path+ is specified as header, that value will be used as
# the 'envelope from' address for the Mail message. Setting this is useful
# when you want delivery notifications sent to a different address than the
# one in +:from+. Mail will actually use the +:return_path+ in preference
# to the +:sender+ in preference to the +:from+ field for the 'envelope
# from' value.
#
# If you do not pass a block to the +mail+ method, it will find all
# templates in the view paths using by default the mailer name and the
# method name that it is being called from, it will then create parts for
# each of these templates intelligently, making educated guesses on correct
# content type and sequence, and return a fully prepared <tt>Mail::Message</tt>
# ready to call <tt>:deliver</tt> on to send.
#
# For example:
#
# class Notifier < ActionMailer::Base
# default from: 'no-reply@test.lindsaar.net'
#
# def welcome
# mail(to: 'mikel@test.lindsaar.net')
# end
# end
#
# Will look for all templates at "app/views/notifier" with name "welcome".
# If no welcome template exists, it will raise an ActionView::MissingTemplate error.
#
# However, those can be customized:
#
# mail(template_path: 'notifications', template_name: 'another')
#
# And now it will look for all templates at "app/views/notifications" with name "another".
#
# If you do pass a block, you can render specific templates of your choice:
#
# mail(to: 'mikel@test.lindsaar.net') do |format|
# format.text
# format.html
# end
#
# You can even render plain text directly without using a template:
#
# mail(to: 'mikel@test.lindsaar.net') do |format|
# format.text { render plain: "Hello Mikel!" }
# format.html { render html: "<h1>Hello Mikel!</h1>".html_safe }
# end
#
# Which will render a +multipart/alternative+ email with +text/plain+ and
# +text/html+ parts.
#
# The block syntax also allows you to customize the part headers if desired:
#
# mail(to: 'mikel@test.lindsaar.net') do |format|
# format.text(content_transfer_encoding: "base64")
# format.html
# end
#
def mail(headers = {}, &block)
return message if @_mail_was_called && headers.blank? && !block
# At the beginning, do not consider class default for content_type
content_type = headers[:content_type]
headers = apply_defaults(headers)
# Apply charset at the beginning so all fields are properly quoted
message.charset = charset = headers[:charset]
# Set configure delivery behavior
wrap_delivery_behavior!(headers[:delivery_method], headers[:delivery_method_options])
assign_headers_to_message(message, headers)
# Render the templates and blocks
responses = collect_responses(headers, &block)
@_mail_was_called = true
create_parts_from_responses(message, responses)
# Setup content type, reapply charset and handle parts order
message.content_type = set_content_type(message, content_type, headers[:content_type])
message.charset = charset
if message.multipart?
message.body.set_sort_order(headers[:parts_order])
message.body.sort_parts!
end
message
end
private
# Used by #mail to set the content type of the message.
#
# It will use the given +user_content_type+, or multipart if the mail
# message has any attachments. If the attachments are inline, the content
# type will be "multipart/related", otherwise "multipart/mixed".
#
# If there is no content type passed in via headers, and there are no
# attachments, or the message is multipart, then the default content type is
# used.
def set_content_type(m, user_content_type, class_default) # :doc:
params = m.content_type_parameters || {}
case
when user_content_type.present?
user_content_type
when m.has_attachments?
if m.attachments.detect(&:inline?)
["multipart", "related", params]
else
["multipart", "mixed", params]
end
when m.multipart?
["multipart", "alternative", params]
else
m.content_type || class_default
end
end
# Translates the +subject+ using Rails I18n class under <tt>[mailer_scope, action_name]</tt> scope.
# If it does not find a translation for the +subject+ under the specified scope it will default to a
# humanized version of the <tt>action_name</tt>.
# If the subject has interpolations, you can pass them through the +interpolations+ parameter.
def default_i18n_subject(interpolations = {}) # :doc:
mailer_scope = self.class.mailer_name.tr("/", ".")
I18n.t(:subject, interpolations.merge(scope: [mailer_scope, action_name], default: action_name.humanize))
end
# Emails do not support relative path links.
def self.supports_path? # :doc:
false
end
def apply_defaults(headers)
default_values = self.class.default.map do |key, value|
[
key,
compute_default(value)
]
end.to_h
headers_with_defaults = headers.reverse_merge(default_values)
headers_with_defaults[:subject] ||= default_i18n_subject
headers_with_defaults
end
def compute_default(value)
return value unless value.is_a?(Proc)
if value.arity == 1
instance_exec(self, &value)
else
instance_exec(&value)
end
end
def assign_headers_to_message(message, headers)
assignable = headers.except(:parts_order, :content_type, :body, :template_name,
:template_path, :delivery_method, :delivery_method_options)
assignable.each { |k, v| message[k] = v }
end
def collect_responses(headers)
if block_given?
collector = ActionMailer::Collector.new(lookup_context) { render(action_name) }
yield(collector)
collector.responses
elsif headers[:body]
collect_responses_from_text(headers)
else
collect_responses_from_templates(headers)
end
end
def collect_responses_from_text(headers)
[{
body: headers.delete(:body),
content_type: headers[:content_type] || "text/plain"
}]
end
def collect_responses_from_templates(headers)
templates_path = headers[:template_path] || self.class.mailer_name
templates_name = headers[:template_name] || action_name
each_template(Array(templates_path), templates_name).map do |template|
self.formats = template.formats
{
body: render(template: template),
content_type: template.type.to_s
}
end
end
def each_template(paths, name, &block)
templates = lookup_context.find_all(name, paths)
if templates.empty?
raise ActionView::MissingTemplate.new(paths, name, paths, false, "mailer")
else
templates.uniq(&:formats).each(&block)
end
end
def create_parts_from_responses(m, responses)
if responses.size == 1 && !m.has_attachments?
responses[0].each { |k, v| m[k] = v }
elsif responses.size > 1 && m.has_attachments?
container = Mail::Part.new
container.content_type = "multipart/alternative"
responses.each { |r| insert_part(container, r, m.charset) }
m.add_part(container)
else
responses.each { |r| insert_part(m, r, m.charset) }
end
end
def insert_part(container, response, charset)
response[:charset] ||= charset
part = Mail::Part.new(response)
container.add_part(part)
end
# This and #instrument_name is for caching instrument
def instrument_payload(key)
{
mailer: mailer_name,
key: key
}
end
def instrument_name
"action_mailer".freeze
end
ActiveSupport.run_load_hooks(:action_mailer, self)
end
end

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require "abstract_controller/collector"
require "active_support/core_ext/hash/reverse_merge"
require "active_support/core_ext/array/extract_options"
module ActionMailer
class Collector
include AbstractController::Collector
attr_reader :responses
def initialize(context, &block)
@context = context
@responses = []
@default_render = block
end
def any(*args, &block)
options = args.extract_options!
raise ArgumentError, "You have to supply at least one format" if args.empty?
args.each { |type| send(type, options.dup, &block) }
end
alias :all :any
def custom(mime, options = {})
options.reverse_merge!(content_type: mime.to_s)
@context.formats = [mime.to_sym]
options[:body] = block_given? ? yield : @default_render.call
@responses << options
end
end
end

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require "active_job"
module ActionMailer
# The <tt>ActionMailer::DeliveryJob</tt> class is used when you
# want to send emails outside of the request-response cycle.
#
# Exceptions are rescued and handled by the mailer class.
class DeliveryJob < ActiveJob::Base # :nodoc:
queue_as { ActionMailer::Base.deliver_later_queue_name }
rescue_from StandardError, with: :handle_exception_with_mailer_class
def perform(mailer, mail_method, delivery_method, *args) #:nodoc:
mailer.constantize.public_send(mail_method, *args).send(delivery_method)
end
private
# "Deserialize" the mailer class name by hand in case another argument
# (like a Global ID reference) raised DeserializationError.
def mailer_class
if mailer = Array(@serialized_arguments).first || Array(arguments).first
mailer.constantize
end
end
def handle_exception_with_mailer_class(exception)
if klass = mailer_class
klass.handle_exception exception
else
raise exception
end
end
end
end

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require "tmpdir"
module ActionMailer
# This module handles everything related to mail delivery, from registering
# new delivery methods to configuring the mail object to be sent.
module DeliveryMethods
extend ActiveSupport::Concern
included do
class_attribute :delivery_methods, :delivery_method
# Do not make this inheritable, because we always want it to propagate
cattr_accessor :raise_delivery_errors
self.raise_delivery_errors = true
cattr_accessor :perform_deliveries
self.perform_deliveries = true
cattr_accessor :deliver_later_queue_name
self.deliver_later_queue_name = :mailers
self.delivery_methods = {}.freeze
self.delivery_method = :smtp
add_delivery_method :smtp, Mail::SMTP,
address: "localhost",
port: 25,
domain: "localhost.localdomain",
user_name: nil,
password: nil,
authentication: nil,
enable_starttls_auto: true
add_delivery_method :file, Mail::FileDelivery,
location: defined?(Rails.root) ? "#{Rails.root}/tmp/mails" : "#{Dir.tmpdir}/mails"
add_delivery_method :sendmail, Mail::Sendmail,
location: "/usr/sbin/sendmail",
arguments: "-i"
add_delivery_method :test, Mail::TestMailer
end
# Helpers for creating and wrapping delivery behavior, used by DeliveryMethods.
module ClassMethods
# Provides a list of emails that have been delivered by Mail::TestMailer
delegate :deliveries, :deliveries=, to: Mail::TestMailer
# Adds a new delivery method through the given class using the given
# symbol as alias and the default options supplied.
#
# add_delivery_method :sendmail, Mail::Sendmail,
# location: '/usr/sbin/sendmail',
# arguments: '-i'
def add_delivery_method(symbol, klass, default_options = {})
class_attribute(:"#{symbol}_settings") unless respond_to?(:"#{symbol}_settings")
send(:"#{symbol}_settings=", default_options)
self.delivery_methods = delivery_methods.merge(symbol.to_sym => klass).freeze
end
def wrap_delivery_behavior(mail, method = nil, options = nil) # :nodoc:
method ||= delivery_method
mail.delivery_handler = self
case method
when NilClass
raise "Delivery method cannot be nil"
when Symbol
if klass = delivery_methods[method]
mail.delivery_method(klass, (send(:"#{method}_settings") || {}).merge(options || {}))
else
raise "Invalid delivery method #{method.inspect}"
end
else
mail.delivery_method(method)
end
mail.perform_deliveries = perform_deliveries
mail.raise_delivery_errors = raise_delivery_errors
end
end
def wrap_delivery_behavior!(*args) # :nodoc:
self.class.wrap_delivery_behavior(message, *args)
end
end
end

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module ActionMailer
# Returns the version of the currently loaded Action Mailer as a <tt>Gem::Version</tt>.
def self.gem_version
Gem::Version.new VERSION::STRING
end
module VERSION
MAJOR = 5
MINOR = 1
TINY = 6
PRE = "1"
STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")
end
end

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require "base64"
module ActionMailer
# Implements a mailer preview interceptor that converts image tag src attributes
# that use inline cid: style urls to data: style urls so that they are visible
# when previewing an HTML email in a web browser.
#
# This interceptor is enabled by default. To disable it, delete it from the
# <tt>ActionMailer::Base.preview_interceptors</tt> array:
#
# ActionMailer::Base.preview_interceptors.delete(ActionMailer::InlinePreviewInterceptor)
#
class InlinePreviewInterceptor
PATTERN = /src=(?:"cid:[^"]+"|'cid:[^']+')/i
include Base64
def self.previewing_email(message) #:nodoc:
new(message).transform!
end
def initialize(message) #:nodoc:
@message = message
end
def transform! #:nodoc:
return message if html_part.blank?
html_part.body = html_part.decoded.gsub(PATTERN) do |match|
if part = find_part(match[9..-2])
%[src="#{data_url(part)}"]
else
match
end
end
message
end
private
def message
@message
end
def html_part
@html_part ||= message.html_part
end
def data_url(part)
"data:#{part.mime_type};base64,#{strict_encode64(part.body.raw_source)}"
end
def find_part(cid)
message.all_parts.find { |p| p.attachment? && p.cid == cid }
end
end
end

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require "active_support/log_subscriber"
module ActionMailer
# Implements the ActiveSupport::LogSubscriber for logging notifications when
# email is delivered or received.
class LogSubscriber < ActiveSupport::LogSubscriber
# An email was delivered.
def deliver(event)
info do
recipients = Array(event.payload[:to]).join(", ")
"Sent mail to #{recipients} (#{event.duration.round(1)}ms)"
end
debug { event.payload[:mail] }
end
# An email was received.
def receive(event)
info { "Received mail (#{event.duration.round(1)}ms)" }
debug { event.payload[:mail] }
end
# An email was generated.
def process(event)
debug do
mailer = event.payload[:mailer]
action = event.payload[:action]
"#{mailer}##{action}: processed outbound mail in #{event.duration.round(1)}ms"
end
end
# Use the logger configured for ActionMailer::Base.
def logger
ActionMailer::Base.logger
end
end
end
ActionMailer::LogSubscriber.attach_to :action_mailer

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module ActionMailer
# Provides helper methods for ActionMailer::Base that can be used for easily
# formatting messages, accessing mailer or message instances, and the
# attachments list.
module MailHelper
# Take the text and format it, indented two spaces for each line, and
# wrapped at 72 columns:
#
# text = <<-TEXT
# This is
# the paragraph.
#
# * item1 * item2
# TEXT
#
# block_format text
# # => " This is the paragraph.\n\n * item1\n * item2\n"
def block_format(text)
formatted = text.split(/\n\r?\n/).collect { |paragraph|
format_paragraph(paragraph)
}.join("\n\n")
# Make list points stand on their own line
formatted.gsub!(/[ ]*([*]+) ([^*]*)/) { " #{$1} #{$2.strip}\n" }
formatted.gsub!(/[ ]*([#]+) ([^#]*)/) { " #{$1} #{$2.strip}\n" }
formatted
end
# Access the mailer instance.
def mailer
@_controller
end
# Access the message instance.
def message
@_message
end
# Access the message attachments list.
def attachments
mailer.attachments
end
# Returns +text+ wrapped at +len+ columns and indented +indent+ spaces.
# By default column length +len+ equals 72 characters and indent
# +indent+ equal two spaces.
#
# my_text = 'Here is a sample text with more than 40 characters'
#
# format_paragraph(my_text, 25, 4)
# # => " Here is a sample text with\n more than 40 characters"
def format_paragraph(text, len = 72, indent = 2)
sentences = [[]]
text.split.each do |word|
if sentences.first.present? && (sentences.last + [word]).join(" ").length > len
sentences << [word]
else
sentences.last << word
end
end
indentation = " " * indent
sentences.map! { |sentence|
"#{indentation}#{sentence.join(' ')}"
}.join "\n"
end
end
end

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require "delegate"
module ActionMailer
# The <tt>ActionMailer::MessageDelivery</tt> class is used by
# <tt>ActionMailer::Base</tt> when creating a new mailer.
# <tt>MessageDelivery</tt> is a wrapper (+Delegator+ subclass) around a lazy
# created <tt>Mail::Message</tt>. You can get direct access to the
# <tt>Mail::Message</tt>, deliver the email or schedule the email to be sent
# through Active Job.
#
# Notifier.welcome(User.first) # an ActionMailer::MessageDelivery object
# Notifier.welcome(User.first).deliver_now # sends the email
# Notifier.welcome(User.first).deliver_later # enqueue email delivery as a job through Active Job
# Notifier.welcome(User.first).message # a Mail::Message object
class MessageDelivery < Delegator
def initialize(mailer_class, action, *args) #:nodoc:
@mailer_class, @action, @args = mailer_class, action, args
# The mail is only processed if we try to call any methods on it.
# Typical usage will leave it unloaded and call deliver_later.
@processed_mailer = nil
@mail_message = nil
end
# Method calls are delegated to the Mail::Message that's ready to deliver.
def __getobj__ #:nodoc:
@mail_message ||= processed_mailer.message
end
# Unused except for delegator internals (dup, marshaling).
def __setobj__(mail_message) #:nodoc:
@mail_message = mail_message
end
# Returns the resulting Mail::Message
def message
__getobj__
end
# Was the delegate loaded, causing the mailer action to be processed?
def processed?
@processed_mailer || @mail_message
end
# Enqueues the email to be delivered through Active Job. When the
# job runs it will send the email using +deliver_now!+. That means
# that the message will be sent bypassing checking +perform_deliveries+
# and +raise_delivery_errors+, so use with caution.
#
# Notifier.welcome(User.first).deliver_later!
# Notifier.welcome(User.first).deliver_later!(wait: 1.hour)
# Notifier.welcome(User.first).deliver_later!(wait_until: 10.hours.from_now)
#
# Options:
#
# * <tt>:wait</tt> - Enqueue the email to be delivered with a delay
# * <tt>:wait_until</tt> - Enqueue the email to be delivered at (after) a specific date / time
# * <tt>:queue</tt> - Enqueue the email on the specified queue
def deliver_later!(options = {})
enqueue_delivery :deliver_now!, options
end
# Enqueues the email to be delivered through Active Job. When the
# job runs it will send the email using +deliver_now+.
#
# Notifier.welcome(User.first).deliver_later
# Notifier.welcome(User.first).deliver_later(wait: 1.hour)
# Notifier.welcome(User.first).deliver_later(wait_until: 10.hours.from_now)
#
# Options:
#
# * <tt>:wait</tt> - Enqueue the email to be delivered with a delay.
# * <tt>:wait_until</tt> - Enqueue the email to be delivered at (after) a specific date / time.
# * <tt>:queue</tt> - Enqueue the email on the specified queue.
def deliver_later(options = {})
enqueue_delivery :deliver_now, options
end
# Delivers an email without checking +perform_deliveries+ and +raise_delivery_errors+,
# so use with caution.
#
# Notifier.welcome(User.first).deliver_now!
#
def deliver_now!
processed_mailer.handle_exceptions do
message.deliver!
end
end
# Delivers an email:
#
# Notifier.welcome(User.first).deliver_now
#
def deliver_now
processed_mailer.handle_exceptions do
message.deliver
end
end
private
# Returns the processed Mailer instance. We keep this instance
# on hand so we can delegate exception handling to it.
def processed_mailer
@processed_mailer ||= @mailer_class.new.tap do |mailer|
mailer.process @action, *@args
end
end
def enqueue_delivery(delivery_method, options = {})
if processed?
::Kernel.raise "You've accessed the message before asking to " \
"deliver it later, so you may have made local changes that would " \
"be silently lost if we enqueued a job to deliver it. Why? Only " \
"the mailer method *arguments* are passed with the delivery job! " \
"Do not access the message in any way if you mean to deliver it " \
"later. Workarounds: 1. don't touch the message before calling " \
"#deliver_later, 2. only touch the message *within your mailer " \
"method*, or 3. use a custom Active Job instead of #deliver_later."
else
args = @mailer_class.name, @action.to_s, delivery_method.to_s, *@args
::ActionMailer::DeliveryJob.set(options).perform_later(*args)
end
end
end
end

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module ActionMailer
# Provides the option to parameterize mailers in order to share instance variable
# setup, processing, and common headers.
#
# Consider this example that does not use parameterization:
#
# class InvitationsMailer < ApplicationMailer
# def account_invitation(inviter, invitee)
# @account = inviter.account
# @inviter = inviter
# @invitee = invitee
#
# subject = "#{@inviter.name} invited you to their Basecamp (#{@account.name})"
#
# mail \
# subject: subject,
# to: invitee.email_address,
# from: common_address(inviter),
# reply_to: inviter.email_address_with_name
# end
#
# def project_invitation(project, inviter, invitee)
# @account = inviter.account
# @project = project
# @inviter = inviter
# @invitee = invitee
# @summarizer = ProjectInvitationSummarizer.new(@project.bucket)
#
# subject = "#{@inviter.name.familiar} added you to a project in Basecamp (#{@account.name})"
#
# mail \
# subject: subject,
# to: invitee.email_address,
# from: common_address(inviter),
# reply_to: inviter.email_address_with_name
# end
#
# def bulk_project_invitation(projects, inviter, invitee)
# @account = inviter.account
# @projects = projects.sort_by(&:name)
# @inviter = inviter
# @invitee = invitee
#
# subject = "#{@inviter.name.familiar} added you to some new stuff in Basecamp (#{@account.name})"
#
# mail \
# subject: subject,
# to: invitee.email_address,
# from: common_address(inviter),
# reply_to: inviter.email_address_with_name
# end
# end
#
# InvitationsMailer.account_invitation(person_a, person_b).deliver_later
#
# Using parameterized mailers, this can be rewritten as:
#
# class InvitationsMailer < ApplicationMailer
# before_action { @inviter, @invitee = params[:inviter], params[:invitee] }
# before_action { @account = params[:inviter].account }
#
# default to: -> { @invitee.email_address },
# from: -> { common_address(@inviter) },
# reply_to: -> { @inviter.email_address_with_name }
#
# def account_invitation
# mail subject: "#{@inviter.name} invited you to their Basecamp (#{@account.name})"
# end
#
# def project_invitation
# @project = params[:project]
# @summarizer = ProjectInvitationSummarizer.new(@project.bucket)
#
# mail subject: "#{@inviter.name.familiar} added you to a project in Basecamp (#{@account.name})"
# end
#
# def bulk_project_invitation
# @projects = params[:projects].sort_by(&:name)
#
# mail subject: "#{@inviter.name.familiar} added you to some new stuff in Basecamp (#{@account.name})"
# end
# end
#
# InvitationsMailer.with(inviter: person_a, invitee: person_b).account_invitation.deliver_later
module Parameterized
extend ActiveSupport::Concern
included do
attr_accessor :params
end
module ClassMethods
# Provide the parameters to the mailer in order to use them in the instance methods and callbacks.
#
# InvitationsMailer.with(inviter: person_a, invitee: person_b).account_invitation.deliver_later
#
# See Parameterized documentation for full example.
def with(params)
ActionMailer::Parameterized::Mailer.new(self, params)
end
end
class Mailer # :nodoc:
def initialize(mailer, params)
@mailer, @params = mailer, params
end
private
def method_missing(method_name, *args)
if @mailer.action_methods.include?(method_name.to_s)
ActionMailer::Parameterized::MessageDelivery.new(@mailer, method_name, @params, *args)
else
super
end
end
def respond_to_missing?(method, include_all = false)
@mailer.respond_to?(method, include_all)
end
end
class MessageDelivery < ActionMailer::MessageDelivery # :nodoc:
def initialize(mailer_class, action, params, *args)
super(mailer_class, action, *args)
@params = params
end
private
def processed_mailer
@processed_mailer ||= @mailer_class.new.tap do |mailer|
mailer.params = @params
mailer.process @action, *@args
end
end
def enqueue_delivery(delivery_method, options = {})
if processed?
super
else
args = @mailer_class.name, @action.to_s, delivery_method.to_s, @params, *@args
ActionMailer::Parameterized::DeliveryJob.set(options).perform_later(*args)
end
end
end
class DeliveryJob < ActionMailer::DeliveryJob # :nodoc:
def perform(mailer, mail_method, delivery_method, params, *args)
mailer.constantize.with(params).public_send(mail_method, *args).send(delivery_method)
end
end
end
end

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require "active_support/descendants_tracker"
module ActionMailer
module Previews #:nodoc:
extend ActiveSupport::Concern
included do
# Set the location of mailer previews through app configuration:
#
# config.action_mailer.preview_path = "#{Rails.root}/lib/mailer_previews"
#
mattr_accessor :preview_path, instance_writer: false
# Enable or disable mailer previews through app configuration:
#
# config.action_mailer.show_previews = true
#
# Defaults to true for development environment
#
mattr_accessor :show_previews, instance_writer: false
# :nodoc:
mattr_accessor :preview_interceptors, instance_writer: false
self.preview_interceptors = [ActionMailer::InlinePreviewInterceptor]
end
module ClassMethods
# Register one or more Interceptors which will be called before mail is previewed.
def register_preview_interceptors(*interceptors)
interceptors.flatten.compact.each { |interceptor| register_preview_interceptor(interceptor) }
end
# Register an Interceptor which will be called before mail is previewed.
# Either a class or a string can be passed in as the Interceptor. If a
# string is passed in it will be <tt>constantize</tt>d.
def register_preview_interceptor(interceptor)
preview_interceptor = \
case interceptor
when String, Symbol
interceptor.to_s.camelize.constantize
else
interceptor
end
unless preview_interceptors.include?(preview_interceptor)
preview_interceptors << preview_interceptor
end
end
end
end
class Preview
extend ActiveSupport::DescendantsTracker
class << self
# Returns all mailer preview classes.
def all
load_previews if descendants.empty?
descendants
end
# Returns the mail object for the given email name. The registered preview
# interceptors will be informed so that they can transform the message
# as they would if the mail was actually being delivered.
def call(email)
preview = new
message = preview.public_send(email)
inform_preview_interceptors(message)
message
end
# Returns all of the available email previews.
def emails
public_instance_methods(false).map(&:to_s).sort
end
# Returns true if the email exists.
def email_exists?(email)
emails.include?(email)
end
# Returns true if the preview exists.
def exists?(preview)
all.any? { |p| p.preview_name == preview }
end
# Find a mailer preview by its underscored class name.
def find(preview)
all.find { |p| p.preview_name == preview }
end
# Returns the underscored name of the mailer preview without the suffix.
def preview_name
name.sub(/Preview$/, "").underscore
end
private
def load_previews
if preview_path
Dir["#{preview_path}/**/*_preview.rb"].each { |file| require_dependency file }
end
end
def preview_path
Base.preview_path
end
def show_previews
Base.show_previews
end
def inform_preview_interceptors(message)
Base.preview_interceptors.each do |interceptor|
interceptor.previewing_email(message)
end
end
end
end
end

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require "active_job/railtie"
require "action_mailer"
require "rails"
require "abstract_controller/railties/routes_helpers"
module ActionMailer
class Railtie < Rails::Railtie # :nodoc:
config.action_mailer = ActiveSupport::OrderedOptions.new
config.eager_load_namespaces << ActionMailer
initializer "action_mailer.logger" do
ActiveSupport.on_load(:action_mailer) { self.logger ||= Rails.logger }
end
initializer "action_mailer.set_configs" do |app|
paths = app.config.paths
options = app.config.action_mailer
if app.config.force_ssl
options.default_url_options ||= {}
options.default_url_options[:protocol] ||= "https"
end
options.assets_dir ||= paths["public"].first
options.javascripts_dir ||= paths["public/javascripts"].first
options.stylesheets_dir ||= paths["public/stylesheets"].first
options.show_previews = Rails.env.development? if options.show_previews.nil?
options.cache_store ||= Rails.cache
if options.show_previews
options.preview_path ||= defined?(Rails.root) ? "#{Rails.root}/test/mailers/previews" : nil
end
# make sure readers methods get compiled
options.asset_host ||= app.config.asset_host
options.relative_url_root ||= app.config.relative_url_root
ActiveSupport.on_load(:action_mailer) do
include AbstractController::UrlFor
extend ::AbstractController::Railties::RoutesHelpers.with(app.routes, false)
include app.routes.mounted_helpers
register_interceptors(options.delete(:interceptors))
register_preview_interceptors(options.delete(:preview_interceptors))
register_observers(options.delete(:observers))
options.each { |k, v| send("#{k}=", v) }
end
ActiveSupport.on_load(:action_dispatch_integration_test) { include ActionMailer::TestCase::ClearTestDeliveries }
end
initializer "action_mailer.compile_config_methods" do
ActiveSupport.on_load(:action_mailer) do
config.compile_methods! if config.respond_to?(:compile_methods!)
end
end
config.after_initialize do |app|
options = app.config.action_mailer
if options.show_previews
app.routes.prepend do
get "/rails/mailers" => "rails/mailers#index", internal: true
get "/rails/mailers/*path" => "rails/mailers#preview", internal: true
end
if options.preview_path
ActiveSupport::Dependencies.autoload_paths << options.preview_path
end
end
end
end
end

27
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module ActionMailer #:nodoc:
# Provides `rescue_from` for mailers. Wraps mailer action processing,
# mail job processing, and mail delivery.
module Rescuable
extend ActiveSupport::Concern
include ActiveSupport::Rescuable
class_methods do
def handle_exception(exception) #:nodoc:
rescue_with_handler(exception) || raise(exception)
end
end
def handle_exceptions #:nodoc:
yield
rescue => exception
rescue_with_handler(exception) || raise
end
private
def process(*)
handle_exceptions do
super
end
end
end
end

121
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require "active_support/test_case"
require "rails-dom-testing"
module ActionMailer
class NonInferrableMailerError < ::StandardError
def initialize(name)
super "Unable to determine the mailer to test from #{name}. " \
"You'll need to specify it using tests YourMailer in your " \
"test case definition"
end
end
class TestCase < ActiveSupport::TestCase
module ClearTestDeliveries
extend ActiveSupport::Concern
included do
setup :clear_test_deliveries
teardown :clear_test_deliveries
end
private
def clear_test_deliveries
if ActionMailer::Base.delivery_method == :test
ActionMailer::Base.deliveries.clear
end
end
end
module Behavior
extend ActiveSupport::Concern
include ActiveSupport::Testing::ConstantLookup
include TestHelper
include Rails::Dom::Testing::Assertions::SelectorAssertions
include Rails::Dom::Testing::Assertions::DomAssertions
included do
class_attribute :_mailer_class
setup :initialize_test_deliveries
setup :set_expected_mail
teardown :restore_test_deliveries
ActiveSupport.run_load_hooks(:action_mailer_test_case, self)
end
module ClassMethods
def tests(mailer)
case mailer
when String, Symbol
self._mailer_class = mailer.to_s.camelize.constantize
when Module
self._mailer_class = mailer
else
raise NonInferrableMailerError.new(mailer)
end
end
def mailer_class
if mailer = _mailer_class
mailer
else
tests determine_default_mailer(name)
end
end
def determine_default_mailer(name)
mailer = determine_constant_from_test_name(name) do |constant|
Class === constant && constant < ActionMailer::Base
end
raise NonInferrableMailerError.new(name) if mailer.nil?
mailer
end
end
private
def initialize_test_deliveries
set_delivery_method :test
@old_perform_deliveries = ActionMailer::Base.perform_deliveries
ActionMailer::Base.perform_deliveries = true
ActionMailer::Base.deliveries.clear
end
def restore_test_deliveries
restore_delivery_method
ActionMailer::Base.perform_deliveries = @old_perform_deliveries
end
def set_delivery_method(method)
@old_delivery_method = ActionMailer::Base.delivery_method
ActionMailer::Base.delivery_method = method
end
def restore_delivery_method
ActionMailer::Base.deliveries.clear
ActionMailer::Base.delivery_method = @old_delivery_method
end
def set_expected_mail
@expected = Mail.new
@expected.content_type ["text", "plain", { "charset" => charset }]
@expected.mime_version = "1.0"
end
def charset
"UTF-8"
end
def encode(subject)
Mail::Encodings.q_value_encode(subject, charset)
end
def read_fixture(action)
IO.readlines(File.join(Rails.root, "test", "fixtures", self.class.mailer_class.name.underscore, action))
end
end
include Behavior
end
end

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require "active_job"
module ActionMailer
# Provides helper methods for testing Action Mailer, including #assert_emails
# and #assert_no_emails.
module TestHelper
include ActiveJob::TestHelper
# Asserts that the number of emails sent matches the given number.
#
# def test_emails
# assert_emails 0
# ContactMailer.welcome.deliver_now
# assert_emails 1
# ContactMailer.welcome.deliver_now
# assert_emails 2
# end
#
# If a block is passed, that block should cause the specified number of
# emails to be sent.
#
# def test_emails_again
# assert_emails 1 do
# ContactMailer.welcome.deliver_now
# end
#
# assert_emails 2 do
# ContactMailer.welcome.deliver_now
# ContactMailer.welcome.deliver_now
# end
# end
def assert_emails(number)
if block_given?
original_count = ActionMailer::Base.deliveries.size
yield
new_count = ActionMailer::Base.deliveries.size
assert_equal number, new_count - original_count, "#{number} emails expected, but #{new_count - original_count} were sent"
else
assert_equal number, ActionMailer::Base.deliveries.size
end
end
# Asserts that no emails have been sent.
#
# def test_emails
# assert_no_emails
# ContactMailer.welcome.deliver_now
# assert_emails 1
# end
#
# If a block is passed, that block should not cause any emails to be sent.
#
# def test_emails_again
# assert_no_emails do
# # No emails should be sent from this block
# end
# end
#
# Note: This assertion is simply a shortcut for:
#
# assert_emails 0
def assert_no_emails(&block)
assert_emails 0, &block
end
# Asserts that the number of emails enqueued for later delivery matches
# the given number.
#
# def test_emails
# assert_enqueued_emails 0
# ContactMailer.welcome.deliver_later
# assert_enqueued_emails 1
# ContactMailer.welcome.deliver_later
# assert_enqueued_emails 2
# end
#
# If a block is passed, that block should cause the specified number of
# emails to be enqueued.
#
# def test_emails_again
# assert_enqueued_emails 1 do
# ContactMailer.welcome.deliver_later
# end
#
# assert_enqueued_emails 2 do
# ContactMailer.welcome.deliver_later
# ContactMailer.welcome.deliver_later
# end
# end
def assert_enqueued_emails(number, &block)
assert_enqueued_jobs number, only: [ ActionMailer::DeliveryJob, ActionMailer::Parameterized::DeliveryJob ], &block
end
# Asserts that no emails are enqueued for later delivery.
#
# def test_no_emails
# assert_no_enqueued_emails
# ContactMailer.welcome.deliver_later
# assert_enqueued_emails 1
# end
#
# If a block is provided, it should not cause any emails to be enqueued.
#
# def test_no_emails
# assert_no_enqueued_emails do
# # No emails should be enqueued from this block
# end
# end
def assert_no_enqueued_emails(&block)
assert_no_enqueued_jobs only: [ ActionMailer::DeliveryJob, ActionMailer::Parameterized::DeliveryJob ], &block
end
end
end

9
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require_relative "gem_version"
module ActionMailer
# Returns the version of the currently loaded Action Mailer as a
# <tt>Gem::Version</tt>.
def self.version
gem_version
end
end

17
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Description:
============
Stubs out a new mailer and its views. Passes the mailer name, either
CamelCased or under_scored, and an optional list of emails as arguments.
This generates a mailer class in app/mailers and invokes your template
engine and test framework generators.
Example:
========
rails generate mailer Notifications signup forgot_password invoice
creates a Notifications mailer class, views, and test:
Mailer: app/mailers/notifications_mailer.rb
Views: app/views/notifications_mailer/signup.text.erb [...]
Test: test/mailers/notifications_mailer_test.rb

36
debian/gems-compat/actionmailer-5.1.6.1/lib/rails/generators/mailer/mailer_generator.rb vendored Normal file
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module Rails
module Generators
class MailerGenerator < NamedBase
source_root File.expand_path("../templates", __FILE__)
argument :actions, type: :array, default: [], banner: "method method"
check_class_collision suffix: "Mailer"
def create_mailer_file
template "mailer.rb", File.join("app/mailers", class_path, "#{file_name}_mailer.rb")
in_root do
if behavior == :invoke && !File.exist?(application_mailer_file_name)
template "application_mailer.rb", application_mailer_file_name
end
end
end
hook_for :template_engine, :test_framework
private
def file_name # :doc:
@_file_name ||= super.gsub(/_mailer/i, "")
end
def application_mailer_file_name
@_application_mailer_file_name ||= if mountable_engine?
"app/mailers/#{namespaced_path}/application_mailer.rb"
else
"app/mailers/application_mailer.rb"
end
end
end
end
end

6
debian/gems-compat/actionmailer-5.1.6.1/lib/rails/generators/mailer/templates/application_mailer.rb vendored Normal file
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<% module_namespacing do -%>
class ApplicationMailer < ActionMailer::Base
default from: 'from@example.com'
layout 'mailer'
end
<% end %>

17
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<% module_namespacing do -%>
class <%= class_name %>Mailer < ApplicationMailer
<% actions.each do |action| -%>
# Subject can be set in your I18n file at config/locales/en.yml
# with the following lookup:
#
# en.<%= file_path.tr("/",".") %>_mailer.<%= action %>.subject
#
def <%= action %>
@greeting = "Hi"
mail to: "to@example.org"
end
<% end -%>
end
<% end -%>

549
debian/gems-compat/actionpack-5.1.6.1/CHANGELOG.md vendored Normal file
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## Rails 5.1.6.1 (November 27, 2018) ##
* No changes.
## Rails 5.1.6 (March 29, 2018) ##
* Check exclude before flagging cookies as secure.
*Catherine Khuu*
## Rails 5.1.5 (February 14, 2018) ##
* Fix optimized url helpers when using relative url root
Fixes #31220.
*Andrew White*
* Ensure dev and prod puma configs do not clobber `ActionDispatch::SystemTesting` defaults. Adds workers: 0 and daemon: false
*Max Schwenk*
## Rails 5.1.4 (September 07, 2017) ##
* Make `take_failed_screenshot` work within engine.
Fixes #30405.
*Yuji Yaginuma*
## Rails 5.1.4.rc1 (August 24, 2017) ##
* No changes.
## Rails 5.1.3 (August 03, 2017) ##
* No changes.
## Rails 5.1.3.rc3 (July 31, 2017) ##
* No changes.
## Rails 5.1.3.rc2 (July 25, 2017) ##
* No changes.
## Rails 5.1.3.rc1 (July 19, 2017) ##
* No changes.
## Rails 5.1.2 (June 26, 2017) ##
* Fallback `ActionController::Parameters#to_s` to `Hash#to_s`.
*Kir Shatrov*
* `driven_by` now registers poltergeist and capybara-webkit
If driver poltergeist or capybara-webkit is set for System Tests,
`driven_by` will register the driver and set additional options passed via
`:options` param.
Refer to drivers documentation to learn what options can be passed.
*Mario Chavez*
## Rails 5.1.1 (May 12, 2017) ##
* No changes.
## Rails 5.1.0 (April 27, 2017) ##
* Raise exception when calling `to_h` and `to_hash` in an unpermitted Parameters.
Before we returned either an empty hash or only the always permitted parameters
(`:controller` and `:action` by default).
The previous behavior was dangerous because in order to get the attributes users
usually fallback to use `to_unsafe_h that` could potentially introduce security issues.
*Rafael Mendonça França*
* Deprecate `config.action_controller.raise_on_unfiltered_parameters`.
This option has no effect in Rails 5.1.
*Rafael Mendonça França*
* Use more specific check for :format in route path
The current check for whether to add an optional format to the path is very lax
and will match things like `:format_id` where there are nested resources, e.g:
``` ruby
resources :formats do
resources :items
end
```
Fix this by using a more restrictive regex pattern that looks for the patterns
`(.:format)`, `.:format` or `/` at the end of the path. Note that we need to
allow for multiple closing parenthesis since the route may be of this form:
``` ruby
get "/books(/:action(.:format))", controller: "books"
```
This probably isn't what's intended since it means that the default index action
route doesn't support a format but we have a test for it so we need to allow it.
Fixes #28517.
*Andrew White*
* Add `action_controller_api` and `action_controller_base` load hooks to be called in `ActiveSupport.on_load`
`ActionController::Base` and `ActionController::API` have differing implementations. This means that
the one umbrella hook `action_controller` is not able to address certain situations where a method
may not exist in a certain implementation.
This is fixed by adding two new hooks so you can target `ActionController::Base` vs `ActionController::API`
Fixes #27013.
*Julian Nadeau*
* Don't include default headers in `ActionController::Metal` responses
The commit e16afe6 introduced an unintentional change of behavior where the default
headers were included in responses from `ActionController::Metal` based controllers.
This is now reverted to the previous behavior of having no default headers.
Fixes #25820.
*Jon Moss*
* Fix `NameError` raised in `ActionController::Renderer#with_defaults`
*Hiroyuki Ishii*
* Added `#reverse_merge` and `#reverse_merge!` methods to `ActionController::Parameters`
*Edouard Chin*, *Mitsutaka Mimura*
* Fix malformed URLS when using `ApplicationController.renderer`
The Rack environment variable `rack.url_scheme` was not being set so `scheme` was
returning `nil`. This caused URLs to be malformed with the default settings.
Fix this by setting `rack.url_scheme` when the environment is normalized.
Fixes #28151.
*George Vrettos*
* Commit flash changes when using a redirect route.
Fixes #27992.
*Andrew White*
* Prefer `remove_method` over `undef_method` when reloading routes
When `undef_method` is used it prevents access to other implementations of that
url helper in the ancestor chain so use `remove_method` instead to restore access.
*Andrew White*
* Add the `resolve` method to the routing DSL
This new method allows customization of the polymorphic mapping of models:
``` ruby
resource :basket
resolve("Basket") { [:basket] }
```
``` erb
<%= form_for @basket do |form| %>
<!-- basket form -->
<% end %>
```
This generates the correct singular URL for the form instead of the default
resources member url, e.g. `/basket` vs. `/basket/:id`.
Fixes #1769.
*Andrew White*
* Add the `direct` method to the routing DSL
This new method allows creation of custom url helpers, e.g:
``` ruby
direct(:apple) { "http://www.apple.com" }
>> apple_url
=> "http://www.apple.com"
```
This has the advantage of being available everywhere url helpers are available
unlike custom url helpers defined in helper modules, etc.
*Andrew White*
* Add `ActionDispatch::SystemTestCase` to Action Pack
Adds Capybara integration directly into Rails through Action Pack!
See PR [#26703](https://github.com/rails/rails/pull/26703)
*Eileen M. Uchitelle*
* Remove deprecated `.to_prepare`, `.to_cleanup`, `.prepare!` and `.cleanup!` from `ActionDispatch::Reloader`.
*Rafael Mendonça França*
* Remove deprecated `ActionDispatch::Callbacks.to_prepare` and `ActionDispatch::Callbacks.to_cleanup`.
*Rafael Mendonça França*
* Remove deprecated `ActionController::Metal.call`.
*Rafael Mendonça França*
* Remove deprecated `ActionController::Metal#env`.
*Rafael Mendonça França*
* Make `with_routing` test helper work when testing controllers inheriting from `ActionController::API`
*Julia López*
* Use accept header in integration tests with `as: :json`
Instead of appending the `format` to the request path, Rails will figure
out the format from the header instead.
This allows devs to use `:as` on routes that don't have a format.
Fixes #27144.
*Kasper Timm Hansen*
* Reset a new session directly after its creation in `ActionDispatch::IntegrationTest#open_session`.
Fixes #22742.
*Tawan Sierek*
* Fixes incorrect output from `rails routes` when using singular resources.
Fixes #26606.
*Erick Reyna*
* Fixes multiple calls to `logger.fatal` instead of a single call,
for every line in an exception backtrace, when printing trace
from `DebugExceptions` middleware.
Fixes #26134.
*Vipul A M*
* Add support for arbitrary hashes in strong parameters:
```ruby
params.permit(preferences: {})
```
*Xavier Noria*
* Add `ActionController::Parameters#merge!`, which behaves the same as `Hash#merge!`.
*Yuji Yaginuma*
* Allow keys not found in `RACK_KEY_TRANSLATION` for setting the environment when rendering
arbitrary templates.
*Sammy Larbi*
* Remove deprecated support to non-keyword arguments in `ActionDispatch::IntegrationTest#process`,
`#get`, `#post`, `#patch`, `#put`, `#delete`, and `#head`.
*Rafael Mendonça França*
* Remove deprecated `ActionDispatch::IntegrationTest#*_via_redirect`.
*Rafael Mendonça França*
* Remove deprecated `ActionDispatch::IntegrationTest#xml_http_request`.
*Rafael Mendonça França*
* Remove deprecated support for passing `:path` and route path as strings in `ActionDispatch::Routing::Mapper#match`.
*Rafael Mendonça França*
* Remove deprecated support for passing path as `nil` in `ActionDispatch::Routing::Mapper#match`.
*Rafael Mendonça França*
* Remove deprecated `cache_control` argument from `ActionDispatch::Static#initialize`.
*Rafael Mendonça França*
* Remove deprecated support to passing strings or symbols to the middleware stack.
*Rafael Mendonça França*
* Change HSTS subdomain to true.
*Rafael Mendonça França*
* Remove deprecated `host` and `port` ssl options.
*Rafael Mendonça França*
* Remove deprecated `const_error` argument in
`ActionDispatch::Session::SessionRestoreError#initialize`.
*Rafael Mendonça França*
* Remove deprecated `#original_exception` in `ActionDispatch::Session::SessionRestoreError`.
*Rafael Mendonça França*
* Deprecate `ActionDispatch::ParamsParser::ParseError` in favor of
`ActionDispatch::Http::Parameters::ParseError`.
*Rafael Mendonça França*
* Remove deprecated `ActionDispatch::ParamsParser`.
*Rafael Mendonça França*
* Remove deprecated `original_exception` and `message` arguments in
`ActionDispatch::ParamsParser::ParseError#initialize`.
*Rafael Mendonça França*
* Remove deprecated `#original_exception` in `ActionDispatch::ParamsParser::ParseError`.
*Rafael Mendonça França*
* Remove deprecated access to mime types through constants.
*Rafael Mendonça França*
* Remove deprecated support to non-keyword arguments in `ActionController::TestCase#process`,
`#get`, `#post`, `#patch`, `#put`, `#delete`, and `#head`.
*Rafael Mendonça França*
* Remove deprecated `xml_http_request` and `xhr` methods in `ActionController::TestCase`.
*Rafael Mendonça França*
* Remove deprecated methods in `ActionController::Parameters`.
*Rafael Mendonça França*
* Remove deprecated support to comparing a `ActionController::Parameters`
with a `Hash`.
*Rafael Mendonça França*
* Remove deprecated support to `:text` in `render`.
*Rafael Mendonça França*
* Remove deprecated support to `:nothing` in `render`.
*Rafael Mendonça França*
* Remove deprecated support to `:back` in `redirect_to`.
*Rafael Mendonça França*
* Remove deprecated support to passing status as option `head`.
*Rafael Mendonça França*
* Remove deprecated support to passing original exception to `ActionController::BadRequest`
and the `ActionController::BadRequest#original_exception` method.
*Rafael Mendonça França*
* Remove deprecated methods `skip_action_callback`, `skip_filter`, `before_filter`,
`prepend_before_filter`, `skip_before_filter`, `append_before_filter`, `around_filter`
`prepend_around_filter`, `skip_around_filter`, `append_around_filter`, `after_filter`,
`prepend_after_filter`, `skip_after_filter` and `append_after_filter`.
*Rafael Mendonça França*
* Show an "unmatched constraints" error when params fail to match constraints
on a matched route, rather than a "missing keys" error.
Fixes #26470.
*Chris Carter*
* Fix adding implicitly rendered template digests to ETags.
Fixes a case when modifying an implicitly rendered template for a
controller action using `fresh_when` or `stale?` would not result in a new
`ETag` value.
*Javan Makhmali*
* Make `fixture_file_upload` work in integration tests.
*Yuji Yaginuma*
* Add `to_param` to `ActionController::Parameters` deprecations.
In the future `ActionController::Parameters` are discouraged from being used
in URLs without explicit whitelisting. Go through `to_h` to use `to_param`.
*Kir Shatrov*
* Fix nested multiple roots
The PR #20940 enabled the use of multiple roots with different constraints
at the top level but unfortunately didn't work when those roots were inside
a namespace and also broke the use of root inside a namespace after a top
level root was defined because the check for the existence of the named route
used the global :root name and not the namespaced name.
This is fixed by using the name_for_action method to expand the :root name to
the full namespaced name. We can pass nil for the second argument as we're not
dealing with resource definitions so don't need to handle the cases for edit
and new routes.
Fixes #26148.
*Ryo Hashimoto*, *Andrew White*
* Include the content of the flash in the auto-generated etag. This solves the following problem:
1. POST /messages
2. redirect_to messages_url, notice: 'Message was created'
3. GET /messages/1
4. GET /messages
Step 4 would before still include the flash message, even though it's no longer relevant,
because the etag cache was recorded with the flash in place and didn't change when it was gone.
*DHH*
* SSL: Changes redirect behavior for all non-GET and non-HEAD requests
(like POST/PUT/PATCH etc) to `http://` resources to redirect to `https://`
with a [307 status code](http://tools.ietf.org/html/rfc7231#section-6.4.7) instead of [301 status code](http://tools.ietf.org/html/rfc7231#section-6.4.2).
307 status code instructs the HTTP clients to preserve the original
request method while redirecting. It has been part of HTTP RFC since
1999 and is implemented/recognized by most (if not all) user agents.
# Before
POST http://example.com/articles (i.e. ArticlesContoller#create)
redirects to
GET https://example.com/articles (i.e. ArticlesContoller#index)
# After
POST http://example.com/articles (i.e. ArticlesContoller#create)
redirects to
POST https://example.com/articles (i.e. ArticlesContoller#create)
*Chirag Singhal*
* Add `:as` option to `ActionController:TestCase#process` and related methods.
Specifying `as: mime_type` allows the `CONTENT_TYPE` header to be specified
in controller tests without manually doing this through `@request.headers['CONTENT_TYPE']`.
*Everest Stefan Munro-Zeisberger*
* Show cache hits and misses when rendering partials.
Partials using the `cache` helper will show whether a render hit or missed
the cache:
```
Rendered messages/_message.html.erb in 1.2 ms [cache hit]
Rendered recordings/threads/_thread.html.erb in 1.5 ms [cache miss]
```
This removes the need for the old fragment cache logging:
```
Read fragment views/v1/2914079/v1/2914079/recordings/70182313-20160225015037000000/d0bdf2974e1ef6d31685c3b392ad0b74 (0.6ms)
Rendered messages/_message.html.erb in 1.2 ms [cache hit]
Write fragment views/v1/2914079/v1/2914079/recordings/70182313-20160225015037000000/3b4e249ac9d168c617e32e84b99218b5 (1.1ms)
Rendered recordings/threads/_thread.html.erb in 1.5 ms [cache miss]
```
Though that full output can be reenabled with
`config.action_controller.enable_fragment_cache_logging = true`.
*Stan Lo*
* Don't override the `Accept` header in integration tests when called with `xhr: true`.
Fixes #25859.
*David Chen*
* Fix `defaults` option for root route.
A regression from some refactoring for the 5.0 release, this change
fixes the use of `defaults` (default parameters) in the `root` routing method.
*Chris Arcand*
* Check `request.path_parameters` encoding at the point they're set.
Check for any non-UTF8 characters in path parameters at the point they're
set in `env`. Previously they were checked for when used to get a controller
class, but this meant routes that went directly to a Rack app, or skipped
controller instantiation for some other reason, had to defend against
non-UTF8 characters themselves.
*Grey Baker*
* Don't raise `ActionController::UnknownHttpMethod` from `ActionDispatch::Static`.
Pass `Rack::Request` objects to `ActionDispatch::FileHandler` to avoid it
raising `ActionController::UnknownHttpMethod`. If an unknown method is
passed, it should pass exception higher in the stack instead, once we've had a
chance to define exception handling behaviour.
*Grey Baker*
* Handle `Rack::QueryParser` errors in `ActionDispatch::ExceptionWrapper`.
Updated `ActionDispatch::ExceptionWrapper` to handle the Rack 2.0 namespace
for `ParameterTypeError` and `InvalidParameterError` errors.
*Grey Baker*
Please check [5-0-stable](https://github.com/rails/rails/blob/5-0-stable/actionpack/CHANGELOG.md) for previous changes.

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Copyright (c) 2004-2017 David Heinemeier Hansson
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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= Action Pack -- From request to response
Action Pack is a framework for handling and responding to web requests. It
provides mechanisms for *routing* (mapping request URLs to actions), defining
*controllers* that implement actions, and generating responses by rendering
*views*, which are templates of various formats. In short, Action Pack
provides the view and controller layers in the MVC paradigm.
It consists of several modules:
* Action Dispatch, which parses information about the web request, handles
routing as defined by the user, and does advanced processing related to HTTP
such as MIME-type negotiation, decoding parameters in POST, PATCH, or PUT bodies,
handling HTTP caching logic, cookies and sessions.
* Action Controller, which provides a base controller class that can be
subclassed to implement filters and actions to handle requests. The result
of an action is typically content generated from views.
With the Ruby on Rails framework, users only directly interface with the
Action Controller module. Necessary Action Dispatch functionality is activated
by default and Action View rendering is implicitly triggered by Action
Controller. However, these modules are designed to function on their own and
can be used outside of Rails.
== Download and installation
The latest version of Action Pack can be installed with RubyGems:
$ gem install actionpack
Source code can be downloaded as part of the Rails project on GitHub
* https://github.com/rails/rails/tree/master/actionpack
== License
Action Pack is released under the MIT license:
* http://www.opensource.org/licenses/MIT
== Support
API documentation is at
* http://api.rubyonrails.org
Bug reports can be filed for the Ruby on Rails project here:
* https://github.com/rails/rails/issues
Feature requests should be discussed on the rails-core mailing list here:
* https://groups.google.com/forum/?fromgroups#!forum/rubyonrails-core

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require "action_pack"
require "active_support/rails"
require "active_support/i18n"
module AbstractController
extend ActiveSupport::Autoload
autoload :Base
autoload :Caching
autoload :Callbacks
autoload :Collector
autoload :DoubleRenderError, "abstract_controller/rendering"
autoload :Helpers
autoload :Logger
autoload :Rendering
autoload :Translation
autoload :AssetPaths
autoload :UrlFor
def self.eager_load!
super
AbstractController::Caching.eager_load!
end
end

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module AbstractController
module AssetPaths #:nodoc:
extend ActiveSupport::Concern
included do
config_accessor :asset_host, :assets_dir, :javascripts_dir,
:stylesheets_dir, :default_asset_host_protocol, :relative_url_root
end
end
end

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require "abstract_controller/error"
require "active_support/configurable"
require "active_support/descendants_tracker"
require "active_support/core_ext/module/anonymous"
require "active_support/core_ext/module/attr_internal"
module AbstractController
# Raised when a non-existing controller action is triggered.
class ActionNotFound < StandardError
end
# AbstractController::Base is a low-level API. Nobody should be
# using it directly, and subclasses (like ActionController::Base) are
# expected to provide their own +render+ method, since rendering means
# different things depending on the context.
class Base
attr_internal :response_body
attr_internal :action_name
attr_internal :formats
include ActiveSupport::Configurable
extend ActiveSupport::DescendantsTracker
class << self
attr_reader :abstract
alias_method :abstract?, :abstract
# Define a controller as abstract. See internal_methods for more
# details.
def abstract!
@abstract = true
end
def inherited(klass) # :nodoc:
# Define the abstract ivar on subclasses so that we don't get
# uninitialized ivar warnings
unless klass.instance_variable_defined?(:@abstract)
klass.instance_variable_set(:@abstract, false)
end
super
end
# A list of all internal methods for a controller. This finds the first
# abstract superclass of a controller, and gets a list of all public
# instance methods on that abstract class. Public instance methods of
# a controller would normally be considered action methods, so methods
# declared on abstract classes are being removed.
# (<tt>ActionController::Metal</tt> and ActionController::Base are defined as abstract)
def internal_methods
controller = self
controller = controller.superclass until controller.abstract?
controller.public_instance_methods(true)
end
# A list of method names that should be considered actions. This
# includes all public instance methods on a controller, less
# any internal methods (see internal_methods), adding back in
# any methods that are internal, but still exist on the class
# itself.
#
# ==== Returns
# * <tt>Set</tt> - A set of all methods that should be considered actions.
def action_methods
@action_methods ||= begin
# All public instance methods of this class, including ancestors
methods = (public_instance_methods(true) -
# Except for public instance methods of Base and its ancestors
internal_methods +
# Be sure to include shadowed public instance methods of this class
public_instance_methods(false)).uniq.map(&:to_s)
methods.to_set
end
end
# action_methods are cached and there is sometimes a need to refresh
# them. ::clear_action_methods! allows you to do that, so next time
# you run action_methods, they will be recalculated.
def clear_action_methods!
@action_methods = nil
end
# Returns the full controller name, underscored, without the ending Controller.
#
# class MyApp::MyPostsController < AbstractController::Base
#
# end
#
# MyApp::MyPostsController.controller_path # => "my_app/my_posts"
#
# ==== Returns
# * <tt>String</tt>
def controller_path
@controller_path ||= name.sub(/Controller$/, "".freeze).underscore unless anonymous?
end
# Refresh the cached action_methods when a new action_method is added.
def method_added(name)
super
clear_action_methods!
end
end
abstract!
# Calls the action going through the entire action dispatch stack.
#
# The actual method that is called is determined by calling
# #method_for_action. If no method can handle the action, then an
# AbstractController::ActionNotFound error is raised.
#
# ==== Returns
# * <tt>self</tt>
def process(action, *args)
@_action_name = action.to_s
unless action_name = _find_action_name(@_action_name)
raise ActionNotFound, "The action '#{action}' could not be found for #{self.class.name}"
end
@_response_body = nil
process_action(action_name, *args)
end
# Delegates to the class' ::controller_path
def controller_path
self.class.controller_path
end
# Delegates to the class' ::action_methods
def action_methods
self.class.action_methods
end
# Returns true if a method for the action is available and
# can be dispatched, false otherwise.
#
# Notice that <tt>action_methods.include?("foo")</tt> may return
# false and <tt>available_action?("foo")</tt> returns true because
# this method considers actions that are also available
# through other means, for example, implicit render ones.
#
# ==== Parameters
# * <tt>action_name</tt> - The name of an action to be tested
def available_action?(action_name)
_find_action_name(action_name)
end
# Tests if a response body is set. Used to determine if the
# +process_action+ callback needs to be terminated in
# +AbstractController::Callbacks+.
def performed?
response_body
end
# Returns true if the given controller is capable of rendering
# a path. A subclass of +AbstractController::Base+
# may return false. An Email controller for example does not
# support paths, only full URLs.
def self.supports_path?
true
end
private
# Returns true if the name can be considered an action because
# it has a method defined in the controller.
#
# ==== Parameters
# * <tt>name</tt> - The name of an action to be tested
#
# :api: private
def action_method?(name)
self.class.action_methods.include?(name)
end
# Call the action. Override this in a subclass to modify the
# behavior around processing an action. This, and not #process,
# is the intended way to override action dispatching.
#
# Notice that the first argument is the method to be dispatched
# which is *not* necessarily the same as the action name.
def process_action(method_name, *args)
send_action(method_name, *args)
end
# Actually call the method associated with the action. Override
# this method if you wish to change how action methods are called,
# not to add additional behavior around it. For example, you would
# override #send_action if you want to inject arguments into the
# method.
alias send_action send
# If the action name was not found, but a method called "action_missing"
# was found, #method_for_action will return "_handle_action_missing".
# This method calls #action_missing with the current action name.
def _handle_action_missing(*args)
action_missing(@_action_name, *args)
end
# Takes an action name and returns the name of the method that will
# handle the action.
#
# It checks if the action name is valid and returns false otherwise.
#
# See method_for_action for more information.
#
# ==== Parameters
# * <tt>action_name</tt> - An action name to find a method name for
#
# ==== Returns
# * <tt>string</tt> - The name of the method that handles the action
# * false - No valid method name could be found.
# Raise +AbstractController::ActionNotFound+.
def _find_action_name(action_name)
_valid_action_name?(action_name) && method_for_action(action_name)
end
# Takes an action name and returns the name of the method that will
# handle the action. In normal cases, this method returns the same
# name as it receives. By default, if #method_for_action receives
# a name that is not an action, it will look for an #action_missing
# method and return "_handle_action_missing" if one is found.
#
# Subclasses may override this method to add additional conditions
# that should be considered an action. For instance, an HTTP controller
# with a template matching the action name is considered to exist.
#
# If you override this method to handle additional cases, you may
# also provide a method (like +_handle_method_missing+) to handle
# the case.
#
# If none of these conditions are true, and +method_for_action+
# returns +nil+, an +AbstractController::ActionNotFound+ exception will be raised.
#
# ==== Parameters
# * <tt>action_name</tt> - An action name to find a method name for
#
# ==== Returns
# * <tt>string</tt> - The name of the method that handles the action
# * <tt>nil</tt> - No method name could be found.
def method_for_action(action_name)
if action_method?(action_name)
action_name
elsif respond_to?(:action_missing, true)
"_handle_action_missing"
end
end
# Checks if the action name is valid and returns false otherwise.
def _valid_action_name?(action_name)
!action_name.to_s.include? File::SEPARATOR
end
end
end

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module AbstractController
module Caching
extend ActiveSupport::Concern
extend ActiveSupport::Autoload
eager_autoload do
autoload :Fragments
end
module ConfigMethods
def cache_store
config.cache_store
end
def cache_store=(store)
config.cache_store = ActiveSupport::Cache.lookup_store(store)
end
private
def cache_configured?
perform_caching && cache_store
end
end
include ConfigMethods
include AbstractController::Caching::Fragments
included do
extend ConfigMethods
config_accessor :default_static_extension
self.default_static_extension ||= ".html"
config_accessor :perform_caching
self.perform_caching = true if perform_caching.nil?
config_accessor :enable_fragment_cache_logging
self.enable_fragment_cache_logging = false
class_attribute :_view_cache_dependencies
self._view_cache_dependencies = []
helper_method :view_cache_dependencies if respond_to?(:helper_method)
end
module ClassMethods
def view_cache_dependency(&dependency)
self._view_cache_dependencies += [dependency]
end
end
def view_cache_dependencies
self.class._view_cache_dependencies.map { |dep| instance_exec(&dep) }.compact
end
private
# Convenience accessor.
def cache(key, options = {}, &block) # :doc:
if cache_configured?
cache_store.fetch(ActiveSupport::Cache.expand_cache_key(key, :controller), options, &block)
else
yield
end
end
end
end

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module AbstractController
module Caching
# Fragment caching is used for caching various blocks within
# views without caching the entire action as a whole. This is
# useful when certain elements of an action change frequently or
# depend on complicated state while other parts rarely change or
# can be shared amongst multiple parties. The caching is done using
# the +cache+ helper available in the Action View. See
# ActionView::Helpers::CacheHelper for more information.
#
# While it's strongly recommended that you use key-based cache
# expiration (see links in CacheHelper for more information),
# it is also possible to manually expire caches. For example:
#
# expire_fragment('name_of_cache')
module Fragments
extend ActiveSupport::Concern
included do
if respond_to?(:class_attribute)
class_attribute :fragment_cache_keys
else
mattr_writer :fragment_cache_keys
end
self.fragment_cache_keys = []
helper_method :fragment_cache_key if respond_to?(:helper_method)
end
module ClassMethods
# Allows you to specify controller-wide key prefixes for
# cache fragments. Pass either a constant +value+, or a block
# which computes a value each time a cache key is generated.
#
# For example, you may want to prefix all fragment cache keys
# with a global version identifier, so you can easily
# invalidate all caches.
#
# class ApplicationController
# fragment_cache_key "v1"
# end
#
# When it's time to invalidate all fragments, simply change
# the string constant. Or, progressively roll out the cache
# invalidation using a computed value:
#
# class ApplicationController
# fragment_cache_key do
# @account.id.odd? ? "v1" : "v2"
# end
# end
def fragment_cache_key(value = nil, &key)
self.fragment_cache_keys += [key || -> { value }]
end
end
# Given a key (as described in +expire_fragment+), returns
# a key suitable for use in reading, writing, or expiring a
# cached fragment. All keys begin with <tt>views/</tt>,
# followed by any controller-wide key prefix values, ending
# with the specified +key+ value. The key is expanded using
# ActiveSupport::Cache.expand_cache_key.
def fragment_cache_key(key)
head = self.class.fragment_cache_keys.map { |k| instance_exec(&k) }
tail = key.is_a?(Hash) ? url_for(key).split("://").last : key
ActiveSupport::Cache.expand_cache_key([*head, *tail], :views)
end
# Writes +content+ to the location signified by
# +key+ (see +expire_fragment+ for acceptable formats).
def write_fragment(key, content, options = nil)
return content unless cache_configured?
key = fragment_cache_key(key)
instrument_fragment_cache :write_fragment, key do
content = content.to_str
cache_store.write(key, content, options)
end
content
end
# Reads a cached fragment from the location signified by +key+
# (see +expire_fragment+ for acceptable formats).
def read_fragment(key, options = nil)
return unless cache_configured?
key = fragment_cache_key(key)
instrument_fragment_cache :read_fragment, key do
result = cache_store.read(key, options)
result.respond_to?(:html_safe) ? result.html_safe : result
end
end
# Check if a cached fragment from the location signified by
# +key+ exists (see +expire_fragment+ for acceptable formats).
def fragment_exist?(key, options = nil)
return unless cache_configured?
key = fragment_cache_key(key)
instrument_fragment_cache :exist_fragment?, key do
cache_store.exist?(key, options)
end
end
# Removes fragments from the cache.
#
# +key+ can take one of three forms:
#
# * String - This would normally take the form of a path, like
# <tt>pages/45/notes</tt>.
# * Hash - Treated as an implicit call to +url_for+, like
# <tt>{ controller: 'pages', action: 'notes', id: 45}</tt>
# * Regexp - Will remove any fragment that matches, so
# <tt>%r{pages/\d*/notes}</tt> might remove all notes. Make sure you
# don't use anchors in the regex (<tt>^</tt> or <tt>$</tt>) because
# the actual filename matched looks like
# <tt>./cache/filename/path.cache</tt>. Note: Regexp expiration is
# only supported on caches that can iterate over all keys (unlike
# memcached).
#
# +options+ is passed through to the cache store's +delete+
# method (or <tt>delete_matched</tt>, for Regexp keys).
def expire_fragment(key, options = nil)
return unless cache_configured?
key = fragment_cache_key(key) unless key.is_a?(Regexp)
instrument_fragment_cache :expire_fragment, key do
if key.is_a?(Regexp)
cache_store.delete_matched(key, options)
else
cache_store.delete(key, options)
end
end
end
def instrument_fragment_cache(name, key) # :nodoc:
payload = instrument_payload(key)
ActiveSupport::Notifications.instrument("#{name}.#{instrument_name}", payload) { yield }
end
end
end
end

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module AbstractController
module Callbacks
extend ActiveSupport::Concern
# Uses ActiveSupport::Callbacks as the base functionality. For
# more details on the whole callback system, read the documentation
# for ActiveSupport::Callbacks.
include ActiveSupport::Callbacks
included do
define_callbacks :process_action,
terminator: ->(controller, result_lambda) { result_lambda.call if result_lambda.is_a?(Proc); controller.performed? },
skip_after_callbacks_if_terminated: true
end
# Override AbstractController::Base's process_action to run the
# process_action callbacks around the normal behavior.
def process_action(*args)
run_callbacks(:process_action) do
super
end
end
module ClassMethods
# If +:only+ or +:except+ are used, convert the options into the
# +:if+ and +:unless+ options of ActiveSupport::Callbacks.
#
# The basic idea is that <tt>:only => :index</tt> gets converted to
# <tt>:if => proc {|c| c.action_name == "index" }</tt>.
#
# Note that <tt>:only</tt> has priority over <tt>:if</tt> in case they
# are used together.
#
# only: :index, if: -> { true } # the :if option will be ignored.
#
# Note that <tt>:if</tt> has priority over <tt>:except</tt> in case they
# are used together.
#
# except: :index, if: -> { true } # the :except option will be ignored.
#
# ==== Options
# * <tt>only</tt> - The callback should be run only for this action.
# * <tt>except</tt> - The callback should be run for all actions except this action.
def _normalize_callback_options(options)
_normalize_callback_option(options, :only, :if)
_normalize_callback_option(options, :except, :unless)
end
def _normalize_callback_option(options, from, to) # :nodoc:
if from = options[from]
_from = Array(from).map(&:to_s).to_set
from = proc { |c| _from.include? c.action_name }
options[to] = Array(options[to]).unshift(from)
end
end
# Take callback names and an optional callback proc, normalize them,
# then call the block with each callback. This allows us to abstract
# the normalization across several methods that use it.
#
# ==== Parameters
# * <tt>callbacks</tt> - An array of callbacks, with an optional
# options hash as the last parameter.
# * <tt>block</tt> - A proc that should be added to the callbacks.
#
# ==== Block Parameters
# * <tt>name</tt> - The callback to be added.
# * <tt>options</tt> - A hash of options to be used when adding the callback.
def _insert_callbacks(callbacks, block = nil)
options = callbacks.extract_options!
_normalize_callback_options(options)
callbacks.push(block) if block
callbacks.each do |callback|
yield callback, options
end
end
##
# :method: before_action
#
# :call-seq: before_action(names, block)
#
# Append a callback before actions. See _insert_callbacks for parameter details.
##
# :method: prepend_before_action
#
# :call-seq: prepend_before_action(names, block)
#
# Prepend a callback before actions. See _insert_callbacks for parameter details.
##
# :method: skip_before_action
#
# :call-seq: skip_before_action(names)
#
# Skip a callback before actions. See _insert_callbacks for parameter details.
##
# :method: append_before_action
#
# :call-seq: append_before_action(names, block)
#
# Append a callback before actions. See _insert_callbacks for parameter details.
##
# :method: after_action
#
# :call-seq: after_action(names, block)
#
# Append a callback after actions. See _insert_callbacks for parameter details.
##
# :method: prepend_after_action
#
# :call-seq: prepend_after_action(names, block)
#
# Prepend a callback after actions. See _insert_callbacks for parameter details.
##
# :method: skip_after_action
#
# :call-seq: skip_after_action(names)
#
# Skip a callback after actions. See _insert_callbacks for parameter details.
##
# :method: append_after_action
#
# :call-seq: append_after_action(names, block)
#
# Append a callback after actions. See _insert_callbacks for parameter details.
##
# :method: around_action
#
# :call-seq: around_action(names, block)
#
# Append a callback around actions. See _insert_callbacks for parameter details.
##
# :method: prepend_around_action
#
# :call-seq: prepend_around_action(names, block)
#
# Prepend a callback around actions. See _insert_callbacks for parameter details.
##
# :method: skip_around_action
#
# :call-seq: skip_around_action(names)
#
# Skip a callback around actions. See _insert_callbacks for parameter details.
##
# :method: append_around_action
#
# :call-seq: append_around_action(names, block)
#
# Append a callback around actions. See _insert_callbacks for parameter details.
# set up before_action, prepend_before_action, skip_before_action, etc.
# for each of before, after, and around.
[:before, :after, :around].each do |callback|
define_method "#{callback}_action" do |*names, &blk|
_insert_callbacks(names, blk) do |name, options|
set_callback(:process_action, callback, name, options)
end
end
define_method "prepend_#{callback}_action" do |*names, &blk|
_insert_callbacks(names, blk) do |name, options|
set_callback(:process_action, callback, name, options.merge(prepend: true))
end
end
# Skip a before, after or around callback. See _insert_callbacks
# for details on the allowed parameters.
define_method "skip_#{callback}_action" do |*names|
_insert_callbacks(names) do |name, options|
skip_callback(:process_action, callback, name, options)
end
end
# *_action is the same as append_*_action
alias_method :"append_#{callback}_action", :"#{callback}_action"
end
end
end
end

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require "action_dispatch/http/mime_type"
module AbstractController
module Collector
def self.generate_method_for_mime(mime)
sym = mime.is_a?(Symbol) ? mime : mime.to_sym
class_eval <<-RUBY, __FILE__, __LINE__ + 1
def #{sym}(*args, &block)
custom(Mime[:#{sym}], *args, &block)
end
RUBY
end
Mime::SET.each do |mime|
generate_method_for_mime(mime)
end
Mime::Type.register_callback do |mime|
generate_method_for_mime(mime) unless instance_methods.include?(mime.to_sym)
end
private
def method_missing(symbol, &block)
unless mime_constant = Mime[symbol]
raise NoMethodError, "To respond to a custom format, register it as a MIME type first: " \
"http://guides.rubyonrails.org/action_controller_overview.html#restful-downloads. " \
"If you meant to respond to a variant like :tablet or :phone, not a custom format, " \
"be sure to nest your variant response within a format response: " \
"format.html { |html| html.tablet { ... } }"
end
if Mime::SET.include?(mime_constant)
AbstractController::Collector.generate_method_for_mime(mime_constant)
send(symbol, &block)
else
super
end
end
end
end

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module AbstractController
class Error < StandardError #:nodoc:
end
end

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require "active_support/dependencies"
module AbstractController
module Helpers
extend ActiveSupport::Concern
included do
class_attribute :_helpers
self._helpers = Module.new
class_attribute :_helper_methods
self._helper_methods = Array.new
end
class MissingHelperError < LoadError
def initialize(error, path)
@error = error
@path = "helpers/#{path}.rb"
set_backtrace error.backtrace
if error.path =~ /^#{path}(\.rb)?$/
super("Missing helper file helpers/%s.rb" % path)
else
raise error
end
end
end
module ClassMethods
# When a class is inherited, wrap its helper module in a new module.
# This ensures that the parent class's module can be changed
# independently of the child class's.
def inherited(klass)
helpers = _helpers
klass._helpers = Module.new { include helpers }
klass.class_eval { default_helper_module! } unless klass.anonymous?
super
end
# Declare a controller method as a helper. For example, the following
# makes the +current_user+ and +logged_in?+ controller methods available
# to the view:
# class ApplicationController < ActionController::Base
# helper_method :current_user, :logged_in?
#
# def current_user
# @current_user ||= User.find_by(id: session[:user])
# end
#
# def logged_in?
# current_user != nil
# end
# end
#
# In a view:
# <% if logged_in? -%>Welcome, <%= current_user.name %><% end -%>
#
# ==== Parameters
# * <tt>method[, method]</tt> - A name or names of a method on the controller
# to be made available on the view.
def helper_method(*meths)
meths.flatten!
self._helper_methods += meths
meths.each do |meth|
_helpers.class_eval <<-ruby_eval, __FILE__, __LINE__ + 1
def #{meth}(*args, &blk) # def current_user(*args, &blk)
controller.send(%(#{meth}), *args, &blk) # controller.send(:current_user, *args, &blk)
end # end
ruby_eval
end
end
# The +helper+ class method can take a series of helper module names, a block, or both.
#
# ==== Options
# * <tt>*args</tt> - Module, Symbol, String
# * <tt>block</tt> - A block defining helper methods
#
# When the argument is a module it will be included directly in the template class.
# helper FooHelper # => includes FooHelper
#
# When the argument is a string or symbol, the method will provide the "_helper" suffix, require the file
# and include the module in the template class. The second form illustrates how to include custom helpers
# when working with namespaced controllers, or other cases where the file containing the helper definition is not
# in one of Rails' standard load paths:
# helper :foo # => requires 'foo_helper' and includes FooHelper
# helper 'resources/foo' # => requires 'resources/foo_helper' and includes Resources::FooHelper
#
# Additionally, the +helper+ class method can receive and evaluate a block, making the methods defined available
# to the template.
#
# # One line
# helper { def hello() "Hello, world!" end }
#
# # Multi-line
# helper do
# def foo(bar)
# "#{bar} is the very best"
# end
# end
#
# Finally, all the above styles can be mixed together, and the +helper+ method can be invoked with a mix of
# +symbols+, +strings+, +modules+ and blocks.
#
# helper(:three, BlindHelper) { def mice() 'mice' end }
#
def helper(*args, &block)
modules_for_helpers(args).each do |mod|
add_template_helper(mod)
end
_helpers.module_eval(&block) if block_given?
end
# Clears up all existing helpers in this class, only keeping the helper
# with the same name as this class.
def clear_helpers
inherited_helper_methods = _helper_methods
self._helpers = Module.new
self._helper_methods = Array.new
inherited_helper_methods.each { |meth| helper_method meth }
default_helper_module! unless anonymous?
end
# Returns a list of modules, normalized from the acceptable kinds of
# helpers with the following behavior:
#
# String or Symbol:: :FooBar or "FooBar" becomes "foo_bar_helper",
# and "foo_bar_helper.rb" is loaded using require_dependency.
#
# Module:: No further processing
#
# After loading the appropriate files, the corresponding modules
# are returned.
#
# ==== Parameters
# * <tt>args</tt> - An array of helpers
#
# ==== Returns
# * <tt>Array</tt> - A normalized list of modules for the list of
# helpers provided.
def modules_for_helpers(args)
args.flatten.map! do |arg|
case arg
when String, Symbol
file_name = "#{arg.to_s.underscore}_helper"
begin
require_dependency(file_name)
rescue LoadError => e
raise AbstractController::Helpers::MissingHelperError.new(e, file_name)
end
mod_name = file_name.camelize
begin
mod_name.constantize
rescue LoadError
# dependencies.rb gives a similar error message but its wording is
# not as clear because it mentions autoloading. To the user all it
# matters is that a helper module couldn't be loaded, autoloading
# is an internal mechanism that should not leak.
raise NameError, "Couldn't find #{mod_name}, expected it to be defined in helpers/#{file_name}.rb"
end
when Module
arg
else
raise ArgumentError, "helper must be a String, Symbol, or Module"
end
end
end
private
# Makes all the (instance) methods in the helper module available to templates
# rendered through this controller.
#
# ==== Parameters
# * <tt>module</tt> - The module to include into the current helper module
# for the class
def add_template_helper(mod)
_helpers.module_eval { include mod }
end
def default_helper_module!
module_name = name.sub(/Controller$/, "".freeze)
module_path = module_name.underscore
helper module_path
rescue LoadError => e
raise e unless e.is_missing? "helpers/#{module_path}_helper"
rescue NameError => e
raise e unless e.missing_name? "#{module_name}Helper"
end
end
end
end

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require "active_support/benchmarkable"
module AbstractController
module Logger #:nodoc:
extend ActiveSupport::Concern
included do
config_accessor :logger
include ActiveSupport::Benchmarkable
end
end
end

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module AbstractController
module Railties
module RoutesHelpers
def self.with(routes, include_path_helpers = true)
Module.new do
define_method(:inherited) do |klass|
super(klass)
if namespace = klass.parents.detect { |m| m.respond_to?(:railtie_routes_url_helpers) }
klass.include(namespace.railtie_routes_url_helpers(include_path_helpers))
else
klass.include(routes.url_helpers(include_path_helpers))
end
end
end
end
end
end
end

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require "abstract_controller/error"
require "action_view"
require "action_view/view_paths"
require "set"
module AbstractController
class DoubleRenderError < Error
DEFAULT_MESSAGE = "Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like \"redirect_to(...) and return\"."
def initialize(message = nil)
super(message || DEFAULT_MESSAGE)
end
end
module Rendering
extend ActiveSupport::Concern
include ActionView::ViewPaths
# Normalizes arguments, options and then delegates render_to_body and
# sticks the result in <tt>self.response_body</tt>.
# :api: public
def render(*args, &block)
options = _normalize_render(*args, &block)
rendered_body = render_to_body(options)
if options[:html]
_set_html_content_type
else
_set_rendered_content_type rendered_format
end
self.response_body = rendered_body
end
# Raw rendering of a template to a string.
#
# It is similar to render, except that it does not
# set the +response_body+ and it should be guaranteed
# to always return a string.
#
# If a component extends the semantics of +response_body+
# (as ActionController extends it to be anything that
# responds to the method each), this method needs to be
# overridden in order to still return a string.
# :api: plugin
def render_to_string(*args, &block)
options = _normalize_render(*args, &block)
render_to_body(options)
end
# Performs the actual template rendering.
# :api: public
def render_to_body(options = {})
end
# Returns Content-Type of rendered content
# :api: public
def rendered_format
Mime[:text]
end
DEFAULT_PROTECTED_INSTANCE_VARIABLES = Set.new %i(
@_action_name @_response_body @_formats @_prefixes
)
# This method should return a hash with assigns.
# You can overwrite this configuration per controller.
# :api: public
def view_assigns
protected_vars = _protected_ivars
variables = instance_variables
variables.reject! { |s| protected_vars.include? s }
variables.each_with_object({}) { |name, hash|
hash[name.slice(1, name.length)] = instance_variable_get(name)
}
end
# Normalize args by converting <tt>render "foo"</tt> to
# <tt>render :action => "foo"</tt> and <tt>render "foo/bar"</tt> to
# <tt>render :file => "foo/bar"</tt>.
# :api: plugin
def _normalize_args(action = nil, options = {})
if action.respond_to?(:permitted?)
if action.permitted?
action
else
raise ArgumentError, "render parameters are not permitted"
end
elsif action.is_a?(Hash)
action
else
options
end
end
# Normalize options.
# :api: plugin
def _normalize_options(options)
options
end
# Process extra options.
# :api: plugin
def _process_options(options)
options
end
# Process the rendered format.
# :api: private
def _process_format(format)
end
def _process_variant(options)
end
def _set_html_content_type # :nodoc:
end
def _set_rendered_content_type(format) # :nodoc:
end
# Normalize args and options.
# :api: private
def _normalize_render(*args, &block)
options = _normalize_args(*args, &block)
_process_variant(options)
_normalize_options(options)
options
end
def _protected_ivars # :nodoc:
DEFAULT_PROTECTED_INSTANCE_VARIABLES
end
end
end

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module AbstractController
module Translation
# Delegates to <tt>I18n.translate</tt>. Also aliased as <tt>t</tt>.
#
# When the given key starts with a period, it will be scoped by the current
# controller and action. So if you call <tt>translate(".foo")</tt> from
# <tt>PeopleController#index</tt>, it will convert the call to
# <tt>I18n.translate("people.index.foo")</tt>. This makes it less repetitive
# to translate many keys within the same controller / action and gives you a
# simple framework for scoping them consistently.
def translate(key, options = {})
if key.to_s.first == "."
path = controller_path.tr("/", ".")
defaults = [:"#{path}#{key}"]
defaults << options[:default] if options[:default]
options[:default] = defaults.flatten
key = "#{path}.#{action_name}#{key}"
end
I18n.translate(key, options)
end
alias :t :translate
# Delegates to <tt>I18n.localize</tt>. Also aliased as <tt>l</tt>.
def localize(*args)
I18n.localize(*args)
end
alias :l :localize
end
end

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module AbstractController
# Includes +url_for+ into the host class (e.g. an abstract controller or mailer). The class
# has to provide a +RouteSet+ by implementing the <tt>_routes</tt> methods. Otherwise, an
# exception will be raised.
#
# Note that this module is completely decoupled from HTTP - the only requirement is a valid
# <tt>_routes</tt> implementation.
module UrlFor
extend ActiveSupport::Concern
include ActionDispatch::Routing::UrlFor
def _routes
raise "In order to use #url_for, you must include routing helpers explicitly. " \
"For instance, `include Rails.application.routes.url_helpers`."
end
module ClassMethods
def _routes
nil
end
def action_methods
@action_methods ||= begin
if _routes
super - _routes.named_routes.helper_names
else
super
end
end
end
end
end
end

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require "active_support/rails"
require "abstract_controller"
require "action_dispatch"
require "action_controller/metal/live"
require "action_controller/metal/strong_parameters"
module ActionController
extend ActiveSupport::Autoload
autoload :API
autoload :Base
autoload :Metal
autoload :Middleware
autoload :Renderer
autoload :FormBuilder
eager_autoload do
autoload :Caching
end
autoload_under "metal" do
autoload :ConditionalGet
autoload :Cookies
autoload :DataStreaming
autoload :EtagWithTemplateDigest
autoload :EtagWithFlash
autoload :Flash
autoload :ForceSSL
autoload :Head
autoload :Helpers
autoload :HttpAuthentication
autoload :BasicImplicitRender
autoload :ImplicitRender
autoload :Instrumentation
autoload :MimeResponds
autoload :ParamsWrapper
autoload :Redirecting
autoload :Renderers
autoload :Rendering
autoload :RequestForgeryProtection
autoload :Rescue
autoload :Streaming
autoload :StrongParameters
autoload :ParameterEncoding
autoload :Testing
autoload :UrlFor
end
autoload_under "api" do
autoload :ApiRendering
end
autoload :TestCase, "action_controller/test_case"
autoload :TemplateAssertions, "action_controller/test_case"
end
# Common Active Support usage in Action Controller
require "active_support/core_ext/module/attribute_accessors"
require "active_support/core_ext/load_error"
require "active_support/core_ext/module/attr_internal"
require "active_support/core_ext/name_error"
require "active_support/core_ext/uri"
require "active_support/inflector"

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require "action_view"
require "action_controller"
require "action_controller/log_subscriber"
module ActionController
# API Controller is a lightweight version of <tt>ActionController::Base</tt>,
# created for applications that don't require all functionalities that a complete
# \Rails controller provides, allowing you to create controllers with just the
# features that you need for API only applications.
#
# An API Controller is different from a normal controller in the sense that
# by default it doesn't include a number of features that are usually required
# by browser access only: layouts and templates rendering, cookies, sessions,
# flash, assets, and so on. This makes the entire controller stack thinner,
# suitable for API applications. It doesn't mean you won't have such
# features if you need them: they're all available for you to include in
# your application, they're just not part of the default API controller stack.
#
# Normally, +ApplicationController+ is the only controller that inherits from
# <tt>ActionController::API</tt>. All other controllers in turn inherit from
# +ApplicationController+.
#
# A sample controller could look like this:
#
# class PostsController < ApplicationController
# def index
# posts = Post.all
# render json: posts
# end
# end
#
# Request, response, and parameters objects all work the exact same way as
# <tt>ActionController::Base</tt>.
#
# == Renders
#
# The default API Controller stack includes all renderers, which means you
# can use <tt>render :json</tt> and brothers freely in your controllers. Keep
# in mind that templates are not going to be rendered, so you need to ensure
# your controller is calling either <tt>render</tt> or <tt>redirect_to</tt> in
# all actions, otherwise it will return 204 No Content.
#
# def show
# post = Post.find(params[:id])
# render json: post
# end
#
# == Redirects
#
# Redirects are used to move from one action to another. You can use the
# <tt>redirect_to</tt> method in your controllers in the same way as in
# <tt>ActionController::Base</tt>. For example:
#
# def create
# redirect_to root_url and return if not_authorized?
# # do stuff here
# end
#
# == Adding New Behavior
#
# In some scenarios you may want to add back some functionality provided by
# <tt>ActionController::Base</tt> that is not present by default in
# <tt>ActionController::API</tt>, for instance <tt>MimeResponds</tt>. This
# module gives you the <tt>respond_to</tt> method. Adding it is quite simple,
# you just need to include the module in a specific controller or in
# +ApplicationController+ in case you want it available in your entire
# application:
#
# class ApplicationController < ActionController::API
# include ActionController::MimeResponds
# end
#
# class PostsController < ApplicationController
# def index
# posts = Post.all
#
# respond_to do |format|
# format.json { render json: posts }
# format.xml { render xml: posts }
# end
# end
# end
#
# Make sure to check the modules included in <tt>ActionController::Base</tt>
# if you want to use any other functionality that is not provided
# by <tt>ActionController::API</tt> out of the box.
class API < Metal
abstract!
# Shortcut helper that returns all the ActionController::API modules except
# the ones passed as arguments:
#
# class MyAPIBaseController < ActionController::Metal
# ActionController::API.without_modules(:ForceSSL, :UrlFor).each do |left|
# include left
# end
# end
#
# This gives better control over what you want to exclude and makes it easier
# to create an API controller class, instead of listing the modules required
# manually.
def self.without_modules(*modules)
modules = modules.map do |m|
m.is_a?(Symbol) ? ActionController.const_get(m) : m
end
MODULES - modules
end
MODULES = [
AbstractController::Rendering,
UrlFor,
Redirecting,
ApiRendering,
Renderers::All,
ConditionalGet,
BasicImplicitRender,
StrongParameters,
ForceSSL,
DataStreaming,
# Before callbacks should also be executed as early as possible, so
# also include them at the bottom.
AbstractController::Callbacks,
# Append rescue at the bottom to wrap as much as possible.
Rescue,
# Add instrumentations hooks at the bottom, to ensure they instrument
# all the methods properly.
Instrumentation,
# Params wrapper should come before instrumentation so they are
# properly showed in logs
ParamsWrapper
]
MODULES.each do |mod|
include mod
end
ActiveSupport.run_load_hooks(:action_controller_api, self)
ActiveSupport.run_load_hooks(:action_controller, self)
end
end

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module ActionController
module ApiRendering
extend ActiveSupport::Concern
included do
include Rendering
end
def render_to_body(options = {})
_process_options(options)
super
end
end
end

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