1 files changed, 48 insertions, 0 deletions
diff --git a/actioncable/lib/action_cable/server/configuration.rb b/actioncable/lib/action_cable/server/configuration.rb
new file mode 100644
index 0000000000..9a7301287c
--- /dev/null
+++ b/actioncable/lib/action_cable/server/configuration.rb
@@ -0,0 +1,48 @@
+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
+      attr_accessor :cable, :url, :mount_path
+
+      attr_accessor :channel_paths # :nodoc:
+
+      def initialize
+        @log_tags = []
+
+        @connection_class = ActionCable::Connection::Base
+        @worker_pool_size = 100
+
+        @disable_request_forgery_protection = false
+      end
+
+      def channel_class_names
+        @channel_class_names ||= channel_paths.collect do |channel_path|
+          Pathname.new(channel_path).basename.to_s.split('.').first.camelize
+        end
+      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