Class: RightSupport::Rack::RequestTracker

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

Overview

TODO docs

Constant Summary collapse

REQUEST_LINEAGE_UUID_HEADER = 
"HTTP_X_REQUEST_LINEAGE_UUID".freeze
REQUEST_UUID_HEADER = 
"X-Request-Uuid".freeze
REQUEST_UUID_ENV_NAME = 
"rack.request_uuid".freeze
UUID_SEPARATOR = 
" ".freeze

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ RequestTracker

Make a new Request tracker.

Tags the requset with a new request UUID

Parameters

app(Rack client): application to run



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# File 'lib/right_support/rack/request_tracker.rb', line 37

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/right_support/rack/request_tracker.rb', line 41

def call(env)
  if env.has_key? REQUEST_LINEAGE_UUID_HEADER
    request_uuid = env[REQUEST_LINEAGE_UUID_HEADER] + UUID_SEPARATOR +
                   generate_request_uuid
  else
    request_uuid = generate_request_uuid
  end

  env[REQUEST_UUID_ENV_NAME] = request_uuid

  status, headers, body = @app.call(env)

  headers[REQUEST_UUID_HEADER] = request_uuid
  [status, headers,body]
end

#generate_request_uuid ⇒ Object 



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# File 'lib/right_support/rack/request_tracker.rb', line 58

def generate_request_uuid
  ::RightSupport::Data::UUID.generate
end