Hi all,
I'm having issues with Unicorn and connecting to
RabbitMQ using the tmm1-amqp gem.
I've tried lots of approaches.
The classic initializer with Thread.new { EM.run }
for the Rails app and even tried using
the Qusion library.
(https://github.com/danielsdeleo/qusion)
I've made a simple mod to Qusion for it to monkey patch
unicorn too.
The code looks like:
/vendor/plugins/qusion/lib/amqp.rb
module AMQP
def self.start_web_dispatcher(amqp_settings={})
@settings = settings.merge(amqp_settings)
case Qusion::ServerSpy.server_type
when :passenger
PhusionPassenger.on_event(:starting_worker_process) do |forked|
if forked
EM.kill_reactor
Thread.current[:mq], @conn = nil, nil
end
Thread.new { start }
die_gracefully_on_signal
end
when :standard
Thread.new { start }
die_gracefully_on_signal
when :evented
die_gracefully_on_signal
when :none # << HERE
Thread.new { start }
die_gracefully_on_signal
else
raise ArgumentError, "AMQP#start_web_dispatcher
requires an argument of
[:standard|:evented|:passenger|:none]"
end
end
def self.die_gracefully_on_signal
Signal.trap("INT") { AMQP.stop { EM.stop } }
Signal.trap("TERM") { AMQP.stop { EM.stop } }
end
end
See the :none case? It used to be empty and return nil.
Now it has the same behavior as the non-
evented :standard server.
The problem is that the "server_spy" wasn't
recognizing Unicorn. So far so
good.
Originally, the AMQP/Qusion conf goes into config/environment.rb
config.after_initialize do
Qusion.start(:user => 'guest',:pass => 'mypass')
end
However, when I publish messages to the queue,
it just isn't posted. It silently fails.
I've then tried to put this on config/unicorn.rb:
before_fork do |server,worker|
Qusion.start(:user => 'guest',:pass => 'mypass')
MQ.new.queue('jobs').publish('hey!')
end
And the hey! message is posted.
However, it only works from here, the MQ.new.queue on the app code
fails silently.
Any ideas on what might be happenig?
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