class Airbrake::Rack::Middleware
Airbrake
Rack
middleware for Rails
and Sinatra applications (or any other Rack-compliant app). Any errors raised by the upstream application will be delivered to Airbrake
and re-raised.
The middleware automatically sends information about the framework that uses it (name and version).
Constants
Public Class Methods
new(app, notifier_name = :default)
click to toggle source
rubocop:enable Style/ClassVars
# File lib/airbrake/rack/middleware.rb, line 31 def initialize(app, notifier_name = :default) @app = app @notifier = Airbrake[notifier_name] # Prevent adding same filters to the same notifier. return if @@known_notifiers.include?(notifier_name) @@known_notifiers << notifier_name return unless @notifier RACK_FILTERS.each do |filter| @notifier.add_filter(filter.new) end end
Public Instance Methods
call(env)
click to toggle source
Rescues any exceptions, sends them to Airbrake
and re-raises the exception. @param [Hash] env the Rack
environment
# File lib/airbrake/rack/middleware.rb, line 49 def call(env) # rubocop:disable Lint/RescueException begin response = @app.call(env) rescue Exception => ex notify_airbrake(ex, env) raise ex end # rubocop:enable Lint/RescueException exception = framework_exception(env) notify_airbrake(exception, env) if exception response end
Private Instance Methods
framework_exception(env)
click to toggle source
Web framework middlewares often store rescued exceptions inside the Rack
env, but Rack
doesn't have a standard key for it:
-
Rails
uses action_dispatch.exception: goo.gl/Kd694n -
Sinatra uses sinatra.error: goo.gl/LLkVL9
-
Goliath uses rack.exception: goo.gl/i7e1nA
# File lib/airbrake/rack/middleware.rb, line 90 def framework_exception(env) env['action_dispatch.exception'] || env['sinatra.error'] || env['rack.exception'] end
notify_airbrake(exception, env)
click to toggle source
# File lib/airbrake/rack/middleware.rb, line 67 def notify_airbrake(exception, env) notice = @notifier.build_notice(exception) return unless notice # ActionDispatch::Request correctly captures server port when using SSL: # See: https://github.com/airbrake/airbrake/issues/802 notice.stash[:rack_request] = if defined?(ActionDispatch::Request) ActionDispatch::Request.new(env) else ::Rack::Request.new(env) end @notifier.notify(notice) end