Class: HireFire::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/hirefire/middleware.rb

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Middleware

Initializes HireFire::Middleware.

Parameters:

  • app (Proc) —

    call with ‘env` to continue down the middleware stack.



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# File 'lib/hirefire/middleware.rb', line 10

def initialize(app)
  @app         = app
  @token       = ENV["HIREFIRE_TOKEN"]
  @path_prefix = get_path_prefix
end

Instance Method Details

#call(env) ⇒ Object

Intercepts and handles the /hirefire/test, /hirefire/development/info, and /hirefire/HIREFIRE_TOKEN/info paths. If none of these paths match, then then request will continue down the middleware stack.

When HireFire::Resource.log_queue_metrics is enabled, and the HTTP_X_REQUEST_START header has been injected at the Heroku Router layer, queue time information will be logged to $stdout. This data can be used by the HireFire Logdrain with the Web.Logplex.QueueTime autoscaling strategy.

Important: Don’t set/update instance variables within this- or any underlying methods. Doing so may result in race conditions when using threaded application servers.

Parameters:

  • env (Hash) —

    containing request information.



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# File 'lib/hirefire/middleware.rb', line 30

def call(env)
  handle_queue(env["HTTP_X_REQUEST_START"])

  if test_path?(env["PATH_INFO"])
    build_test_response
  elsif info_path?(env["PATH_INFO"])
    build_info_response
  else
    @app.call(env)
  end
end