Class: Rack::Lock

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/lock.rb

Overview

Rack::Lock locks every request inside a mutex, so that every request will effectively be executed synchronously.

Constant Summary collapse

FLAG = 
'rack.multithread'.freeze

Instance Method Summary collapse

Constructor Details

#initialize(app, mutex = Mutex.new) ⇒ Lock

Returns a new instance of Lock.



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# File 'lib/rack/lock.rb', line 10

def initialize(app, mutex = Mutex.new)
  @app, @mutex = app, mutex
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack/lock.rb', line 14

def call(env)
  old, env[FLAG] = env[FLAG], false
  @mutex.lock
  response = @app.call(env)
  body = BodyProxy.new(response[2]) { @mutex.unlock }
  response[2] = body
  response
ensure
  @mutex.unlock unless body
  env[FLAG] = old
end