Class: Vx::Lib::Instrumentation::Rack::HandleExceptionsMiddleware

Inherits:
Struct
  • Object
show all
Defined in:
lib/vx/lib/instrumentation/rack/handle_exceptions_middleware.rb

Constant Summary collapse

IGNORED_EXCEPTIONS = 
%w{
  ActionController::RoutingError
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#app ⇒ Object

Returns the value of attribute app

Returns:

  • (Object) —

    the current value of app



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# File 'lib/vx/lib/instrumentation/rack/handle_exceptions_middleware.rb', line 4

def app
  @app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/vx/lib/instrumentation/rack/handle_exceptions_middleware.rb', line 26

def call(env)
  begin
    response = app.call(env)
  rescue Exception => ex
    notify ex, env
    raise ex
  end

  if ex = framework_exception(env)
    notify ex, env
  end

  response
end

#clean_env(env) ⇒ Object 



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# File 'lib/vx/lib/instrumentation/rack/handle_exceptions_middleware.rb', line 10

def clean_env(env)
  env = env.select{|k,v| k !~ /^(action_dispatch|puma|session|rack\.session|action_controller)/ }
  env['HTTP_COOKIE'] &&= env['HTTP_COOKIE'].scan(/.{80}/).join("\n")
  env
end

#framework_exception(env) ⇒ Object 



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# File 'lib/vx/lib/instrumentation/rack/handle_exceptions_middleware.rb', line 41

def framework_exception(env)
  env['rack.exception'] || env['action_dispatch.exception']
end

#ignore?(ex) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/vx/lib/instrumentation/rack/handle_exceptions_middleware.rb', line 45

def ignore?(ex)
  IGNORED_EXCEPTIONS.include? ex.class.name
end

#notify(exception, env) ⇒ Object 



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# File 'lib/vx/lib/instrumentation/rack/handle_exceptions_middleware.rb', line 16

def notify(exception, env)
  unless ignore?(exception)
    Lib::Instrumentation.handle_exception(
      'handle_exception.rack',
      exception,
      clean_env(env)
    )
  end
end