Class: CableRoom::ChannelTracker::ThreadPool

Inherits:
ActionCable::Server::Worker
  • Object
show all
Defined in:
lib/cable_room/channel_tracker.rb

Instance Method Summary collapse

Instance Method Details

#async_invoke(receiver, method, *args, connection: receiver, &block) ⇒ Object 



114
115
116
117
118
119
120
121
122
123
124
125
126
 
# File 'lib/cable_room/channel_tracker.rb', line 114

def async_invoke(receiver, method, *args, connection: receiver, &block)
  # Instead of posting directly to the global pool, post to a dedicated queue for the room/"connection".
  #   This makes each rooms so that they can be processed by at-most-one thread at a time, while still
  #   allowing multiple rooms to be processed by the same thread-pool.

  # TODO Implement more of a round-robin approach so that no room can starve out others?

  # "connection" here really references the Channel, since "Connections" in this context don't really exist

  connection._post_wrapped_work(async: false) do
    invoke(receiver, method, *args, connection: connection, &block)
  end
end

#invoke(receiver, method, *args, connection:, &block) ⇒ Object

ActionCable's Worker#invoke reduces every exception to a log line and a no-argument handle_exception call, which discards the error itself. Rooms run all of their work through here, so report it properly instead.



100
101
102
103
104
105
106
107
108
109
110
111
112
 
# File 'lib/cable_room/channel_tracker.rb', line 100

def invoke(receiver, method, *args, connection:, &block)
  work(connection) do
    receiver.send method, *args, &block
  rescue Exception => e
    if connection.respond_to?(:report_work_error)
      connection.report_work_error(e)
    else
      logger.error "There was an exception - #{e.class}(#{e.message})"
      logger.error Array(e.backtrace).join("\n")
      CableRoom.report_error(e, connection: connection)
    end
  end
end