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.
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# File 'lib/celluloid/zmq/reactor.rb', line 11 def initialize @waker = Waker.new @poller = ::ZMQ::Poller.new @readers = {} @writers = {} rc = @poller.register @waker.socket, ::ZMQ::POLLIN unless ::ZMQ::Util.resultcode_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
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# File 'lib/celluloid/zmq/reactor.rb', line 34 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
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# File 'lib/celluloid/zmq/reactor.rb', line 49 def run_once(timeout = nil) if timeout timeout *= 1000 # Poller uses millisecond increments else timeout = :blocking end rc = @poller.poll(timeout) unless ::ZMQ::Util.resultcode_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
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# File 'lib/celluloid/zmq/reactor.rb', line 24 def wait_readable(socket) monitor_zmq socket, @readers, ::ZMQ::POLLIN end |
#wait_writable(socket) ⇒ Object
Wait for the given ZMQ socket to become writable
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# File 'lib/celluloid/zmq/reactor.rb', line 29 def wait_writable(socket) monitor_zmq socket, @writers, ::ZMQ::POLLOUT end |