Class: Celluloid::ZMQ::Reactor
- Inherits:
-
Object
- Object
- Celluloid::ZMQ::Reactor
- Extended by:
- Forwardable
- Defined in:
- lib/celluloid/zmq/reactor.rb
Overview
React to incoming 0MQ and Celluloid events. This is kinda sorta supposed to resemble the Reactor design pattern.
Instance Method Summary collapse
-
#initialize ⇒ Reactor
constructor
A new instance of Reactor.
-
#monitor_zmq(socket, set, type) ⇒ Object
Monitor the given ZMQ socket with the given options.
-
#run_once(timeout = nil) ⇒ Object
Run the reactor, waiting for events, and calling the given block if the reactor is awoken by the waker.
-
#wait_readable(socket) ⇒ Object
Wait for the given ZMQ socket to become readable.
-
#wait_writable(socket) ⇒ Object
Wait for the given ZMQ socket to become writable.
Constructor Details
#initialize ⇒ Reactor
Returns a new instance of Reactor.
12 13 14 15 16 17 18 19 20 21 22 |
# File 'lib/celluloid/zmq/reactor.rb', line 12 def initialize @waker = Waker.new @poller = ::ZMQ::Poller.new @readers = {} @writers = {} rc = @poller.register @waker.socket, ::ZMQ::POLLIN unless result_ok? rc raise "0MQ poll error: #{::ZMQ::Util.error_string}" end end |
Instance Method Details
#monitor_zmq(socket, set, type) ⇒ Object
Monitor the given ZMQ socket with the given options
35 36 37 38 39 40 41 42 43 44 45 46 |
# File 'lib/celluloid/zmq/reactor.rb', line 35 def monitor_zmq(socket, set, type) if set.has_key? socket raise ArgumentError, "another method is already waiting on #{socket.inspect}" else set[socket] = Task.current end @poller.register socket, type Task.suspend :zmqwait socket end |
#run_once(timeout = nil) ⇒ Object
Run the reactor, waiting for events, and calling the given block if the reactor is awoken by the waker
50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 |
# File 'lib/celluloid/zmq/reactor.rb', line 50 def run_once(timeout = nil) if timeout timeout *= 1000 # Poller uses millisecond increments else timeout = :blocking end rc = @poller.poll(timeout) unless result_ok? rc raise IOError, "0MQ poll error: #{::ZMQ::Util.error_string}" end @poller.readables.each do |sock| if sock == @waker.socket @waker.wait else task = @readers.delete sock @poller.deregister sock, ::ZMQ::POLLIN if task task.resume else Celluloid::Logger.debug "ZMQ error: got read event without associated reader" end end end @poller.writables.each do |sock| task = @writers.delete sock @poller.deregister sock, ::ZMQ::POLLOUT if task task.resume else Celluloid::Logger.debug "ZMQ error: got write event without associated reader" end end end |
#wait_readable(socket) ⇒ Object
Wait for the given ZMQ socket to become readable
25 26 27 |
# File 'lib/celluloid/zmq/reactor.rb', line 25 def wait_readable(socket) monitor_zmq socket, @readers, ::ZMQ::POLLIN end |
#wait_writable(socket) ⇒ Object
Wait for the given ZMQ socket to become writable
30 31 32 |
# File 'lib/celluloid/zmq/reactor.rb', line 30 def wait_writable(socket) monitor_zmq socket, @writers, ::ZMQ::POLLOUT end |