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| | # -*- encoding: binary -*-
# :enddoc:
# 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.
class Rainbows::EventMachine::TryDefer < Struct.new(:app)
# shortcuts
ASYNC_CALLBACK = Rainbows::EvCore::ASYNC_CALLBACK
def initialize(app)
# 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
super
end
def call(env)
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
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