| # |
| # Copyright 2017 the original author or authors. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| import grpc |
| from grpc._channel import _Rendezvous |
| |
| |
| class GrpcClient(object): |
| def __init__(self, log): |
| self.channel = None |
| self.connected = False |
| self.log = log |
| |
| def connect(self, endpoint): |
| if self.connected: |
| return |
| try: |
| self.log.info('insecurely-connecting', endpoint=endpoint) |
| self.channel = grpc.insecure_channel(endpoint) |
| self.connected = True |
| self.log.info('insecurely-connected', endpoint=endpoint) |
| return |
| |
| except _Rendezvous, e: |
| if e.code() == grpc.StatusCode.UNAVAILABLE: |
| self.log.info('grpc-endpoint-not-available') |
| else: |
| self.log.exception(e) |
| |
| except Exception, e: |
| self.log.exception('cannot-connect', endpoint=endpoint) |