def start(self):
with threading.Lock():
self._server_thread = threading.Thread(target=self._start_server)
self._server_thread.start()
self._server_thread.join()
if not self._port:
raise errors.GrpcPortError('Error assigning grpc api port!')
def _start_grpc_server(self):
"""Starts gRPC API server."""
grpc_service_pb2 = __import__(
'google.appengine.tools.devappserver2.'
'grpc_service_pb2', globals(), locals(), ['grpc_service_pb2'])
class CallHandler(grpc_service_pb2.BetaCallHandlerServicer):
"""Handles gRPC method calls."""
def HandleCall(self, request, context):
# TODO: b/36590656#comment3 - Add exception handling logic here.
api_response = _execute_request(request, use_proto3=True)
response = grpc_service_pb2.Response(
response=api_response.Encode())
return response
self._grpc_server = grpc_service_pb2.beta_create_CallHandler_server(
CallHandler())
# add_insecure_port() returns positive port number when port allocation is
# successful. Otherwise it returns 0.
# 'localhost' works with both ipv4 and ipv6.
self._grpc_api_port = self._grpc_server.add_insecure_port(
'localhost:' + str(self._grpc_api_port))
if not self._grpc_api_port:
raise errors.GrpcPortError('Error assigning grpc api port!')
# We set this GRPC_PORT in environment variable as it is only accessed by
# the devappserver process.
os.environ['GRPC_PORT'] = str(self._grpc_api_port)
logging.info('Starting GRPC_API_server at: http://localhost:%d',
self._grpc_api_port)
self._grpc_server.start()
class APIServer(wsgi_server.WsgiServer):
"""Serves API calls over HTTP and GRPC(optional)."""
def __init__(self, host, port, app_id, use_grpc=False, grpc_api_port=0):
self._app_id = app_id
self._host = host
super(APIServer, self).__init__((host, port), self)
self.set_balanced_address('localhost:8080')
self._use_grpc = use_grpc
self._grpc_api_port = grpc_api_port
def _start_grpc_server(self):
"""Starts gRPC API server."""
grpc_service_pb2 = __import__('google.appengine.tools.devappserver2.'
'grpc_service_pb2', globals(), locals(),
['grpc_service_pb2'])
class CallHandler(grpc_service_pb2.BetaCallHandlerServicer):
"""Handles gRPC method calls."""
def HandleCall(self, request, context):
response = grpc_service_pb2.Response()
try:
api_response = _execute_request(request, use_proto3=True)
response.response = api_response.Encode()
except apiproxy_errors.ApplicationError, e:
response.application_error.code = e.application_error
response.application_error.detail = e.error_detail
return response
self._grpc_server = grpc_service_pb2.beta_create_CallHandler_server(
CallHandler())
# add_insecure_port() returns positive port number when port allocation is
# successful. Otherwise it returns 0.
# 'localhost' works with both ipv4 and ipv6.
self._grpc_api_port = self._grpc_server.add_insecure_port(
'localhost:' + str(self._grpc_api_port))
if not self._grpc_api_port:
raise errors.GrpcPortError('Error assigning grpc api port!')
datastore_v3_stub = apiproxy_stub_map.apiproxy.GetStub('datastore_v3')
if isinstance(datastore_v3_stub, datastore_grpc_stub.DatastoreGrpcStub):
datastore_v3_stub.SetTxnAddTaskCallbackHostPort(
'localhost:%d' % self._grpc_api_port)
# We set this GRPC_PORT in environment variable as it is only accessed by
# the devappserver process.
os.environ['GRPC_PORT'] = str(self._grpc_api_port)
logging.info('Starting GRPC_API_server at: http://localhost:%d',
self._grpc_api_port)
self._grpc_server.start()