mirror of https://github.com/grpc/grpc.git
Adds the initial reference implementation for health-checking in gRPC Python as a separate project (but within the same grpc package to keep namespaces consistent). Only installs the package to test the build-proto-modules custom command introduced in the health-checking project.pull/2816/head
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graft grpc |
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include commands.py |
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gRPC Python Health Checking |
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=========================== |
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Reference package for GRPC Python health checking. |
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Dependencies |
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------------ |
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Depends on the `grpcio` package, available from PyPI via `pip install grpcio`. |
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# Copyright 2015, Google Inc. |
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# All rights reserved. |
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# |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions are |
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# met: |
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# |
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# * Redistributions of source code must retain the above copyright |
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|
# notice, this list of conditions and the following disclaimer. |
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|
# * Redistributions in binary form must reproduce the above |
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|
# copyright notice, this list of conditions and the following disclaimer |
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|
# in the documentation and/or other materials provided with the |
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|
# distribution. |
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# * Neither the name of Google Inc. nor the names of its |
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|
# contributors may be used to endorse or promote products derived from |
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|
# this software without specific prior written permission. |
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|
# |
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
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"""Provides distutils command classes for the GRPC Python setup process.""" |
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import distutils |
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import glob |
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import os |
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import os.path |
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import subprocess |
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import sys |
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import setuptools |
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from setuptools.command import build_py |
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class BuildProtoModules(setuptools.Command): |
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"""Command to generate project *_pb2.py modules from proto files.""" |
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description = '' |
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user_options = [] |
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def initialize_options(self): |
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pass |
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def finalize_options(self): |
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self.protoc_command = 'protoc' |
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self.grpc_python_plugin_command = distutils.spawn.find_executable( |
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'grpc_python_plugin') |
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def run(self): |
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paths = [] |
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root_directory = os.getcwd() |
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for walk_root, directories, filenames in os.walk(root_directory): |
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for filename in filenames: |
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if filename.endswith('.proto'): |
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paths.append(os.path.join(walk_root, filename)) |
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command = [ |
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self.protoc_command, |
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'--plugin=protoc-gen-python-grpc={}'.format( |
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self.grpc_python_plugin_command), |
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'-I {}'.format(root_directory), |
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'--python_out={}'.format(root_directory), |
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'--python-grpc_out={}'.format(root_directory), |
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] + paths |
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subprocess.check_call(' '.join(command), cwd=root_directory, shell=True) |
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class BuildPy(build_py.build_py): |
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"""Custom project build command.""" |
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def run(self): |
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self.run_command('build_proto_modules') |
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build_py.build_py.run(self) |
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# Copyright 2015, Google Inc. |
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# All rights reserved. |
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# |
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# Redistribution and use in source and binary forms, with or without |
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|
# modification, are permitted provided that the following conditions are |
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|
# met: |
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|
# |
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|
# * Redistributions of source code must retain the above copyright |
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|
# notice, this list of conditions and the following disclaimer. |
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|
# * Redistributions in binary form must reproduce the above |
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|
# copyright notice, this list of conditions and the following disclaimer |
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|
# in the documentation and/or other materials provided with the |
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|
# distribution. |
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|
# * Neither the name of Google Inc. nor the names of its |
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|
# contributors may be used to endorse or promote products derived from |
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|
# this software without specific prior written permission. |
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|
# |
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|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||||
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||||
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
|
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|
|
@ -0,0 +1,30 @@ |
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# Copyright 2015, Google Inc. |
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|
# All rights reserved. |
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|
# |
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|
# Redistribution and use in source and binary forms, with or without |
||||||
|
# modification, are permitted provided that the following conditions are |
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|
# met: |
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|
# |
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|
# * Redistributions of source code must retain the above copyright |
||||||
|
# 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 |
||||||
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||||
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||||
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||||
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
|
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|
|
@ -0,0 +1,30 @@ |
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# Copyright 2015, Google Inc. |
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|
# All rights reserved. |
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|
# |
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|
# Redistribution and use in source and binary forms, with or without |
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|
# modification, are permitted provided that the following conditions are |
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|
# met: |
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|
# |
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|
# * Redistributions of source code must retain the above copyright |
||||||
|
# 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. |
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|
# * 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. |
||||||
|
# |
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|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
||||||
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
||||||
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||||
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
|
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|
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// Copyright 2015, Google Inc. |
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// All rights reserved. |
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// |
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// Redistribution and use in source and binary forms, with or without |
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|
// modification, are permitted provided that the following conditions are |
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|
// met: |
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|
// |
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|
// * Redistributions of source code must retain the above copyright |
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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 |
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|
// distribution. |
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|
// * Neither the name of Google Inc. nor the names of its |
||||||
|
// contributors may be used to endorse or promote products derived from |
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|
// this software without specific prior written permission. |
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|
// |
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|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||||
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
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syntax = "proto3"; |
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package grpc.health.v1alpha; |
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message HealthCheckRequest { |
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string service = 1; |
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} |
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message HealthCheckResponse { |
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enum ServingStatus { |
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UNKNOWN = 0; |
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SERVING = 1; |
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NOT_SERVING = 2; |
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} |
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ServingStatus status = 1; |
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} |
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service Health { |
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rpc Check(HealthCheckRequest) returns (HealthCheckResponse); |
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} |
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# Copyright 2015, Google Inc. |
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# All rights reserved. |
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|
# |
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# Redistribution and use in source and binary forms, with or without |
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|
# modification, are permitted provided that the following conditions are |
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|
# met: |
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|
# |
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|
# * Redistributions of source code must retain the above copyright |
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|
# notice, this list of conditions and the following disclaimer. |
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|
# * Redistributions in binary form must reproduce the above |
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|
# copyright notice, this list of conditions and the following disclaimer |
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|
# in the documentation and/or other materials provided with the |
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|
# distribution. |
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|
# * Neither the name of Google Inc. nor the names of its |
||||||
|
# contributors may be used to endorse or promote products derived from |
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|
# this software without specific prior written permission. |
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|
# |
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|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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"""Reference implementation for health checking in gRPC Python.""" |
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import abc |
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import enum |
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import threading |
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from grpc.health.v1alpha import health_pb2 |
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@enum.unique |
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class HealthStatus(enum.Enum): |
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"""Statuses for a service mirroring the reference health.proto's values.""" |
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UNKNOWN = health_pb2.HealthCheckResponse.UNKNOWN |
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SERVING = health_pb2.HealthCheckResponse.SERVING |
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NOT_SERVING = health_pb2.HealthCheckResponse.NOT_SERVING |
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class _HealthServicer(health_pb2.EarlyAdopterHealthServicer): |
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"""Servicer handling RPCs for service statuses.""" |
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def __init__(self): |
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self._server_status_lock = threading.Lock() |
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self._server_status = {} |
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def Check(self, request, context): |
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with self._server_status_lock: |
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if request.service not in self._server_status: |
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# TODO(atash): once the Python API has a way of setting the server |
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# status, bring us into conformance with the health check spec by |
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# returning the NOT_FOUND status here. |
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raise NotImplementedError() |
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else: |
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return health_pb2.HealthCheckResponse( |
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status=self._server_status[request.service].value) |
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def set(service, status): |
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if not isinstance(status, HealthStatus): |
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raise TypeError('expected grpc.health.v1alpha.health.HealthStatus ' |
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'for argument `status` but got {}'.format(status)) |
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with self._server_status_lock: |
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self._server_status[service] = status |
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class HealthServer(health_pb2.EarlyAdopterHealthServer): |
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"""Interface for the reference gRPC Python health server.""" |
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__metaclass__ = abc.ABCMeta |
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@abc.abstractmethod |
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def start(self): |
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raise NotImplementedError() |
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@abc.abstractmethod |
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def stop(self): |
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raise NotImplementedError() |
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@abc.abstractmethod |
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def set(self, service, status): |
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"""Set the status of the given service. |
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Args: |
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service (str): service name of the service to set the reported status of |
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status (HealthStatus): status to set for the specified service |
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""" |
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raise NotImplementedError() |
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class _HealthServerImplementation(HealthServer): |
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"""Implementation for the reference gRPC Python health server.""" |
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def __init__(self, server, servicer): |
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self._server = server |
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self._servicer = servicer |
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def start(self): |
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self._server.start() |
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def stop(self): |
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self._server.stop() |
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def set(self, service, status): |
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self._servicer.set(service, status) |
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def create_Health_server(port, private_key=None, certificate_chain=None): |
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"""Get a HealthServer instance. |
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Args: |
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port (int): port number passed through to health_pb2 server creation |
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routine. |
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private_key (str): to-be-created server's desired private key |
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certificate_chain (str): to-be-created server's desired certificate chain |
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Returns: |
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An instance of HealthServer (conforming thus to |
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EarlyAdopterHealthServer and providing a method to set server status).""" |
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servicer = _HealthServicer() |
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server = health_pb2.early_adopter_create_Health_server( |
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servicer, port=port, private_key=private_key, |
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certificate_chain=certificate_chain) |
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return _HealthServerImplementation(server, servicer) |
@ -0,0 +1,72 @@ |
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# Copyright 2015, Google Inc. |
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|
# All rights reserved. |
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|
# |
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|
# Redistribution and use in source and binary forms, with or without |
||||||
|
# modification, are permitted provided that the following conditions are |
||||||
|
# met: |
||||||
|
# |
||||||
|
# * Redistributions of source code must retain the above copyright |
||||||
|
# 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 |
||||||
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
||||||
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
||||||
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||||
|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||||
|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||||||
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||||||
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||||||
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
||||||
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
|
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|
"""Setup module for the GRPC Python package's optional health checking.""" |
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|
|
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import os |
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import os.path |
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import sys |
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|
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from distutils import core as _core |
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import setuptools |
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|
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# Ensure we're in the proper directory whether or not we're being used by pip. |
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os.chdir(os.path.dirname(os.path.abspath(__file__))) |
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|
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# Break import-style to ensure we can actually find our commands module. |
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import commands |
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|
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_PACKAGES = ( |
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setuptools.find_packages('.') |
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) |
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|
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_PACKAGE_DIRECTORIES = { |
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|
'': '.', |
||||||
|
} |
||||||
|
|
||||||
|
_INSTALL_REQUIRES = ( |
||||||
|
'grpcio>=0.10.0a0', |
||||||
|
) |
||||||
|
|
||||||
|
_SETUP_REQUIRES = _INSTALL_REQUIRES |
||||||
|
|
||||||
|
_COMMAND_CLASS = { |
||||||
|
'build_proto_modules': commands.BuildProtoModules, |
||||||
|
'build_py': commands.BuildPy, |
||||||
|
} |
||||||
|
|
||||||
|
setuptools.setup( |
||||||
|
name='grpcio_health_checking', |
||||||
|
version='0.10.0a0', |
||||||
|
packages=list(_PACKAGES), |
||||||
|
package_dir=_PACKAGE_DIRECTORIES, |
||||||
|
install_requires=_INSTALL_REQUIRES, |
||||||
|
setup_requires=_SETUP_REQUIRES, |
||||||
|
cmdclass=_COMMAND_CLASS |
||||||
|
) |
Loading…
Reference in new issue