.. _errorhandler:

ErrorHandler
============

By default, a HTTP code 500 error is returned if any error occurred.

You can customize this behavior via ErrorHandler:

.. code-block:: diff

 func (i *ServiceInitializer) InitService(s turbo.Servable) error {
 +	 s.RegisterComponent("errorHandler", errorHandler)
 }

 +var errorHandler turbo.ErrorHandlerFunc = func (resp http.ResponseWriter, req *http.Request, err error) {
 +  	resp.Write([]byte("from errorHandler:" + err.Error()))
 +}

Edit "yourservice/service.yaml":

.. code-block:: diff

 +errorhandler: errorHandler

Restart and test(Modify "SayHello" to make it return an error)::

 $ curl -w "\n" "http://localhost:8081/hello?your_name=zx"
 from errorHandler:rpc error: code = Unknown desc = error!