Initial checkin of gRPC to third_party/

third_party/grpc/src/python/grpcio_health_checking/commands.py

+# 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:
+#
+#     * 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.
+
+"""Provides distutils command classes for the GRPC Python setup process."""
+
+import distutils
+import glob
+import os
+import os.path
+import subprocess
+import sys
+
+import setuptools
+from setuptools.command import build_py
+
+
+class BuildProtoModules(setuptools.Command):
+  """Command to generate project *_pb2.py modules from proto files."""
+
+  description = ''
+  user_options = []
+
+  def initialize_options(self):
+    pass
+
+  def finalize_options(self):
+    self.protoc_command = distutils.spawn.find_executable('protoc')
+    self.grpc_python_plugin_command = distutils.spawn.find_executable(
+        'grpc_python_plugin')
+
+  def run(self):
+    paths = []
+    root_directory = os.getcwd()
+    for walk_root, directories, filenames in os.walk(root_directory):
+      for filename in filenames:
+        if filename.endswith('.proto'):
+          paths.append(os.path.join(walk_root, filename))
+    command = [
+        self.protoc_command,
+        '--plugin=protoc-gen-python-grpc={}'.format(
+            self.grpc_python_plugin_command),
+        '-I {}'.format(root_directory),
+        '--python_out={}'.format(root_directory),
+        '--python-grpc_out={}'.format(root_directory),
+    ] + paths
+    try:
+      subprocess.check_output(' '.join(command), cwd=root_directory, shell=True,
+                              stderr=subprocess.STDOUT)
+    except subprocess.CalledProcessError as e:
+      raise Exception('{}\nOutput:\n{}'.format(e.message, e.output))
+
+
+class BuildPy(build_py.build_py):
+  """Custom project build command."""
+
+  def run(self):
+    self.run_command('build_proto_modules')
+    build_py.build_py.run(self)