Class: Appsignal::Rack::RailsInstrumentation Private

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

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ RailsInstrumentation

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of RailsInstrumentation.



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# File 'lib/appsignal/rack/rails_instrumentation.rb', line 9

def initialize(app, options = {})
  Appsignal.logger.debug "Initializing Appsignal::Rack::RailsInstrumentation"
  @app = app
  @options = options
end

Instance Method Details

#call(env) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/appsignal/rack/rails_instrumentation.rb', line 15

def call(env)
  if Appsignal.active?
    call_with_appsignal_monitoring(env)
  else
    @app.call(env)
  end
end

#call_with_appsignal_monitoring(env) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/appsignal/rack/rails_instrumentation.rb', line 23

def call_with_appsignal_monitoring(env)
  request = ActionDispatch::Request.new(env)
  transaction = Appsignal::Transaction.create(
    request_id(env),
    Appsignal::Transaction::HTTP_REQUEST,
    request,
    :params_method => :filtered_parameters
  )
  begin
    @app.call(env)
  rescue Exception => error # rubocop:disable Lint/RescueException
    transaction.set_error(error)
    raise error
  ensure
    controller = env["action_controller.instance"]
    if controller
      transaction.set_action_if_nil("#{controller.class}##{controller.action_name}")
    end
    transaction.set_http_or_background_queue_start
    transaction.set_metadata("path", request.path)
    begin
      transaction.set_metadata("method", request.request_method)
    rescue => error
      Appsignal.logger.error("Unable to report HTTP request method: '#{error}'")
    end
    Appsignal::Transaction.complete_current!
  end
end

#request_id(env) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/appsignal/rack/rails_instrumentation.rb', line 52

def request_id(env)
  env["action_dispatch.request_id"] || SecureRandom.uuid
end