diff options
Diffstat (limited to 'lib/action_cable/connection/subscriptions.rb')
-rw-r--r-- | lib/action_cable/connection/subscriptions.rb | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/lib/action_cable/connection/subscriptions.rb b/lib/action_cable/connection/subscriptions.rb new file mode 100644 index 0000000000..24ab1bdfbf --- /dev/null +++ b/lib/action_cable/connection/subscriptions.rb @@ -0,0 +1,69 @@ +module ActionCable + module Connection + class Subscriptions + 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 + + subscription_klass = connection.server.registered_channels.detect do |channel_klass| + channel_klass == id_options[:channel].safe_constantize + end + + if subscription_klass + subscriptions[id_key] ||= subscription_klass.new(connection, id_key, id_options) + else + logger.error "Subscription class not found (#{data.inspect})" + end + end + + def remove(data) + logger.info "Unsubscribing from channel: #{data['identifier']}" + subscriptions[data['identifier']].perform_disconnection + subscriptions.delete(data['identifier']) + end + + def perform_action(data) + find(data).perform_action ActiveSupport::JSON.decode(data['data']) + end + + + def identifiers + subscriptions.keys + end + + def cleanup + subscriptions.each { |id, channel| channel.perform_disconnection } + end + + + private + attr_reader :connection, :subscriptions + 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 |