Class: ExceptionNotification::Rack

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

Defined Under Namespace

Classes: CascadePassException

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Rack

Returns a new instance of Rack.



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# File 'lib/exception_notification/rack.rb', line 5

def initialize(app, options = {})
  @app = app

  ExceptionNotifier.ignored_exceptions = options.delete(:ignore_exceptions) if options.key?(:ignore_exceptions)

  if options.key?(:ignore_if)
    rack_ignore = options.delete(:ignore_if)
    ExceptionNotifier.ignore_if do |exception, options|
      options.key?(:env) && rack_ignore.call(options[:env], exception)
    end
  end

  if options.key?(:ignore_crawlers)
    ignore_crawlers = options.delete(:ignore_crawlers)
    ExceptionNotifier.ignore_if do |exception, options|
      options.key?(:env) && from_crawler(options[:env], ignore_crawlers)
    end
  end

  @ignore_cascade_pass = options.delete(:ignore_cascade_pass) { true }

  options.each do |notifier_name, options|
    ExceptionNotifier.register_exception_notifier(notifier_name, options)
  end
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/exception_notification/rack.rb', line 31

def call(env)
  _, headers, _ = response = @app.call(env)

  if !@ignore_cascade_pass && headers['X-Cascade'] == 'pass'
    msg = "This exception means that the preceding Rack middleware set the 'X-Cascade' header to 'pass' -- in " <<
      "Rails, this often means that the route was not found (404 error)."
    raise CascadePassException, msg
  end

  response
rescue Exception => exception
  if ExceptionNotifier.notify_exception(exception, :env => env)
    env['exception_notifier.delivered'] = true
  end

  raise exception unless exception.is_a?(CascadePassException)
  response
end