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| | # -*- encoding: binary -*-
# Middleware that will run the app dispatch in a separate thread.
# This middleware is automatically loaded by Rainbows! when using
# EventMachine and if the app responds to the +deferred?+ method.
#
# Use EM.threadpool_size in your \Rainbows! config file to control
# the number of threads used by EventMachine.
#
# See http://brainspl.at/articles/2008/04/18/deferred-requests-with-merb-ebb-and-thin
# for more information.
class Rainbows::EventMachine::TryDefer
def initialize(app) # :nodoc:
# the entire app becomes multithreaded, even the root (non-deferred)
# thread since any thread can share processes with others
Rainbows::Const::RACK_DEFAULTS['rack.multithread'] = true
@app = app
end
def call(env) # :nodoc:
if @app.deferred?(env)
EM.defer(proc { catch(:async) { @app.call(env) } }, env['async.callback'])
# all of the async/deferred stuff breaks Rack::Lint :<
nil
else
@app.call(env)
end
end
end
|