Action Cable Server Configuration

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.

Methods

Attributes

[RW] allow_same_origin_as_host
[RW] allowed_request_origins
[RW] cable
[RW] connection_class
[RW] disable_request_forgery_protection
[RW] filter_parameters
[RW] health_check_application
[RW] health_check_path
[RW] log_tags
[RW] logger
[RW] mount_path
[RW] precompile_assets
[RW] url
[RW] worker_pool_size

Class Public methods

new()

📝 Source code 
# File actioncable/lib/action_cable/server/configuration.rb, line 22
      def initialize
        @log_tags = []

        @connection_class = -> { ActionCable::Connection::Base }
        @worker_pool_size = 4

        @disable_request_forgery_protection = false
        @allow_same_origin_as_host = true
        @filter_parameters = []

        @health_check_application = ->(env) {
          [200, { Rack::CONTENT_TYPE => "text/html", "date" => Time.now.httpdate }, []]
        }
      end
🔎 See on GitHub

Instance Public methods

pubsub_adapter()

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.

📝 Source code 
# File actioncable/lib/action_cable/server/configuration.rb, line 40
      def pubsub_adapter
        adapter = (cable.fetch("adapter") { "redis" })

        # Require the adapter itself and give useful feedback about
        #     1. Missing adapter gems and
        #     2. Adapter gems' missing dependencies.
        path_to_adapter = "action_cable/subscription_adapter/#{adapter}"
        begin
          require path_to_adapter
        rescue LoadError => e
          # We couldn't require the adapter itself. Raise an exception that points out
          # config typos and missing gems.
          if e.path == path_to_adapter
            # We can assume that a non-builtin adapter was specified, so it's either
            # misspelled or missing from Gemfile.
            raise e.class, "Could not load the '#{adapter}' Action Cable pubsub adapter. Ensure that the adapter is spelled correctly in config/cable.yml and that you've added the necessary adapter gem to your Gemfile.", e.backtrace

          # Bubbled up from the adapter require. Prefix the exception message with some
          # guidance about how to address it and reraise.
          else
            raise e.class, "Error loading the '#{adapter}' Action Cable pubsub adapter. Missing a gem it depends on? #{e.message}", e.backtrace
          end
        end

        adapter = adapter.camelize
        adapter = "PostgreSQL" if adapter == "Postgresql"
        "ActionCable::SubscriptionAdapter::#{adapter}".constantize
      end
🔎 See on GitHub