7 files changed, 109 insertions, 12 deletions
diff --git a/tools/distrib/python/grpcio_tools/.gitignore b/tools/distrib/python/grpcio_tools/.gitignore
index 979704d970..9f3a7360ee 100644
--- a/tools/distrib/python/grpcio_tools/.gitignore
+++ b/tools/distrib/python/grpcio_tools/.gitignore
@@ -5,3 +5,4 @@ grpc_root/
 *.c
 *.cpp
 *.egg-info
+*.so
diff --git a/tools/distrib/python/grpcio_tools/README.rst b/tools/distrib/python/grpcio_tools/README.rst
index e9f137493b..8946a1d5b3 100644
--- a/tools/distrib/python/grpcio_tools/README.rst
+++ b/tools/distrib/python/grpcio_tools/README.rst
@@ -53,7 +53,7 @@ GCC-like stuff, but you may end up having a bad time.
 ::
 
   $ export REPO_ROOT=grpc  # REPO_ROOT can be any directory of your choice
-  $ git clone https://github.com/grpc/grpc.git $REPO_ROOT
+  $ git clone -b $(curl -L http://grpc.io/release) https://github.com/grpc/grpc $REPO_ROOT
   $ cd $REPO_ROOT
   $ git submodule update --init
 
diff --git a/tools/distrib/python/grpcio_tools/grpc/tools/protoc_compiler.pyx b/tools/distrib/python/grpcio_tools/grpc/tools/_protoc_compiler.pyx
index a6530127c0..a6530127c0 100644
--- a/tools/distrib/python/grpcio_tools/grpc/tools/protoc_compiler.pyx
+++ b/tools/distrib/python/grpcio_tools/grpc/tools/_protoc_compiler.pyx
diff --git a/tools/distrib/python/grpcio_tools/grpc/tools/command.py b/tools/distrib/python/grpcio_tools/grpc/tools/command.py
new file mode 100644
index 0000000000..ccf38b7d56
--- /dev/null
+++ b/tools/distrib/python/grpcio_tools/grpc/tools/command.py
@@ -0,0 +1,70 @@
+# Copyright 2016, 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.
+
+import os
+import sys
+
+import setuptools
+
+from grpc.tools import protoc
+
+
+class BuildProtoModules(setuptools.Command):
+  """Command to generate project *_pb2.py modules from proto files."""
+
+  description = 'build grpc protobuf modules'
+  user_options = []
+
+  def initialize_options(self):
+    pass
+
+  def finalize_options(self):
+    pass
+
+  def run(self):
+    # due to limitations of the proto generator, we require that only *one*
+    # directory is provided as an 'include' directory. We assume it's the '' key
+    # to `self.distribution.package_dir` (and get a key error if it's not
+    # there).
+    proto_files = []
+    inclusion_root = os.path.abspath(self.distribution.package_dir[''])
+    for root, _, files in os.walk(inclusion_root):
+      for filename in files:
+        if filename.endswith('.proto'):
+          proto_files.append(os.path.abspath(os.path.join(root, filename)))
+
+    for proto_file in proto_files:
+      command = [
+          'grpc.tools.protoc',
+          '--proto_path={}'.format(inclusion_root),
+          '--python_out={}'.format(inclusion_root),
+          '--grpc_python_out={}'.format(inclusion_root),
+      ] + [proto_file]
+      if protoc.main(command) != 0:
+        sys.stderr.write('warning: {} failed'.format(command))
diff --git a/tools/distrib/python/grpcio_tools/grpc/tools/protoc.py b/tools/distrib/python/grpcio_tools/grpc/tools/protoc.py
index 1c69e78920..e1256a7dd9 100644
--- a/tools/distrib/python/grpcio_tools/grpc/tools/protoc.py
+++ b/tools/distrib/python/grpcio_tools/grpc/tools/protoc.py
@@ -32,10 +32,18 @@
 import pkg_resources
 import sys
 
-from grpc.tools import protoc_compiler
+from grpc.tools import _protoc_compiler
 
+def main(command_arguments):
+  """Run the protocol buffer compiler with the given command-line arguments.
+
+  Args:
+    command_arguments: a list of strings representing command line arguments to
+        `protoc`.
+  """
+  command_arguments = [argument.encode() for argument in command_arguments]
+  return _protoc_compiler.run_main(command_arguments)
 
 if __name__ == '__main__':
   proto_include = pkg_resources.resource_filename('grpc.tools', '_proto')
-  protoc_compiler.run_main(
-      sys.argv + ['-I{}'.format(proto_include)])
+  sys.exit(main(sys.argv + ['-I{}'.format(proto_include)]))
diff --git a/tools/distrib/python/grpcio_tools/grpc_version.py b/tools/distrib/python/grpcio_tools/grpc_version.py
index 31309923a9..4b1e7fcd58 100644
--- a/tools/distrib/python/grpcio_tools/grpc_version.py
+++ b/tools/distrib/python/grpcio_tools/grpc_version.py
@@ -29,4 +29,4 @@
 
 # AUTO-GENERATED FROM `$REPO_ROOT/templates/tools/distrib/python/grpcio_tools/grpc_version.py.template`!!!
 
-VERSION='0.15.1'
+VERSION='0.16.0.dev0'
diff --git a/tools/distrib/python/grpcio_tools/setup.py b/tools/distrib/python/grpcio_tools/setup.py
index a21e090ae3..d804f34fc6 100644
--- a/tools/distrib/python/grpcio_tools/setup.py
+++ b/tools/distrib/python/grpcio_tools/setup.py
@@ -31,9 +31,12 @@ from distutils import extension
 import errno
 import os
 import os.path
+import pkg_resources
+import platform
 import shlex
 import shutil
 import sys
+import sysconfig
 
 import setuptools
 from setuptools.command import build_ext
@@ -43,6 +46,11 @@ from setuptools.command import build_ext
 os.chdir(os.path.dirname(os.path.abspath(__file__)))
 sys.path.insert(0, os.path.abspath('.'))
 
+import protoc_lib_deps
+import grpc_version
+
+PY3 = sys.version_info.major == 3
+
 # There are some situations (like on Windows) where CC, CFLAGS, and LDFLAGS are
 # entirely ignored/dropped/forgotten by distutils and its Cygwin/MinGW support.
 # We use these environment variables to thus get around that without locking
@@ -56,8 +64,18 @@ EXTRA_LINK_ARGS = shlex.split(os.environ.get('GRPC_PYTHON_LDFLAGS',
 GRPC_PYTHON_TOOLS_PACKAGE = 'grpc.tools'
 GRPC_PYTHON_PROTO_RESOURCES_NAME = '_proto'
 
-import protoc_lib_deps
-import grpc_version
+DEFINE_MACROS = (('HAVE_PTHREAD', 1),)
+if "win32" in sys.platform and '64bit' in platform.architecture()[0]:
+  DEFINE_MACROS += (('MS_WIN64', 1),)
+
+# By default, Python3 distutils enforces compatibility of
+# c plugins (.so files) with the OSX version Python3 was built with.
+# For Python3.4, this is OSX 10.6, but we need Thread Local Support (__thread)
+if 'darwin' in sys.platform and PY3:
+  mac_target = sysconfig.get_config_var('MACOSX_DEPLOYMENT_TARGET')
+  if mac_target and (pkg_resources.parse_version(mac_target) <
+		     pkg_resources.parse_version('10.9.0')):
+    os.environ['MACOSX_DEPLOYMENT_TARGET'] = '10.9'
 
 def package_data():
   tools_path = GRPC_PYTHON_TOOLS_PACKAGE.replace('.', os.path.sep)
@@ -86,8 +104,8 @@ def protoc_ext_module():
       os.path.join(protoc_lib_deps.CC_INCLUDE, cc_file)
       for cc_file in protoc_lib_deps.CC_FILES]
   plugin_ext = extension.Extension(
-      name='grpc.tools.protoc_compiler',
-      sources=['grpc/tools/protoc_compiler.pyx'] + plugin_sources,
+      name='grpc.tools._protoc_compiler',
+      sources=['grpc/tools/_protoc_compiler.pyx'] + plugin_sources,
       include_dirs=[
           '.',
           'grpc_root',
@@ -95,9 +113,9 @@ def protoc_ext_module():
           protoc_lib_deps.CC_INCLUDE,
       ],
       language='c++',
-      define_macros=[('HAVE_PTHREAD', 1)],
-      extra_compile_args=EXTRA_COMPILE_ARGS,
-      extra_link_args=EXTRA_LINK_ARGS,
+      define_macros=list(DEFINE_MACROS),
+      extra_compile_args=list(EXTRA_COMPILE_ARGS),
+      extra_link_args=list(EXTRA_LINK_ARGS),
   )
   return plugin_ext