Note: Python 2.7 has reached end of support on January 31, 2024. Your existing Python 2.7 applications will continue to run and receive traffic. However, App Engine might block re-deployment of applications that use runtimes after their end of support date. We recommend that you migrate to the latest supported version of Python.

The RpcStatus Class

The RpcStatus class provides the status of an on-going or complete RPC via the following fields:

state: The State of the RPC.
error_name: The Error name set by the application. Only set when the status is APPLICATION_ERROR. Used by the application to transmit the specific reason for an error.
error_message: The error message associated with the RPC status.

The RpcStatus class provides a subclass, State, an Enum of possible RPC states:

OK: The RPC completed successfully.
RUNNING: The RPC is still running (not complete)
REQUEST_ERROR: The request was malformed or incomplete.
SERVER_ERROR: The server experienced an unexpected error.
NETWORK_ERROR: An error occured in the network.
APPLICATION_ERROR: The application is indicating an error. When in this state, the RPC needs automatically sets application_error.