| # Copyright 2015, Google Inc. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
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| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following disclaimer |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| |
| """Reference implementation for health checking in gRPC Python.""" |
| |
| import threading |
| |
| from grpc_health.health.v1 import health_pb2 |
| |
| |
| class HealthServicer(health_pb2.BetaHealthServicer): |
| """Servicer handling RPCs for service statuses.""" |
| |
| def __init__(self): |
| self._server_status_lock = threading.Lock() |
| self._server_status = {} |
| |
| def Check(self, request, context): |
| with self._server_status_lock: |
| if request.service not in self._server_status: |
| # TODO(atash): once the Python API has a way of setting the server |
| # status, bring us into conformance with the health check spec by |
| # returning the NOT_FOUND status here. |
| raise NotImplementedError() |
| else: |
| return health_pb2.HealthCheckResponse( |
| status=self._server_status[request.service]) |
| |
| def set(self, service, status): |
| """Sets the status of a service. |
| |
| Args: |
| service: string, the name of the service. |
| NOTE, '' must be set. |
| status: HealthCheckResponse.status enum value indicating |
| the status of the service |
| """ |
| with self._server_status_lock: |
| self._server_status[service] = status |
| |