Import grpcio-sys 0.6.0

And add metadata files using the following command:
get_rust_pkg.py --add3prf -v grpcio-sys-0.6.0 -o grpcio-sys

Use LICENSE file from parent grpcio crate. Add README.android
as requested during security review.

Test: None
Change-Id: Ib5f5c2af6f51d50c536cc4b6979666d480a57041

13 files changed, 730 insertions, 0 deletions

diff --git a/grpc/tools/distrib/python/grpcio_tools/.gitignore b/grpc/tools/distrib/python/grpcio_tools/.gitignore
new file mode 100644
index 00000000..9f3a7360
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/.gitignore
@@ -0,0 +1,8 @@
+build/
+protobuf/
+grpc_plugin/
+grpc_root/
+*.c
+*.cpp
+*.egg-info
+*.so
diff --git a/grpc/tools/distrib/python/grpcio_tools/MANIFEST.in b/grpc/tools/distrib/python/grpcio_tools/MANIFEST.in
new file mode 100644
index 00000000..49437518
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/MANIFEST.in
@@ -0,0 +1,8 @@
+include _parallel_compile_patch.py
+include grpc_version.py
+include protoc_deps.py
+include protoc_lib_deps.py
+include README.rst
+graft grpc_tools
+graft grpc_root
+graft third_party
diff --git a/grpc/tools/distrib/python/grpcio_tools/README.rst b/grpc/tools/distrib/python/grpcio_tools/README.rst
new file mode 100644
index 00000000..15a76416
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/README.rst
@@ -0,0 +1,186 @@
+gRPC Python Tools
+=================
+
+Package for gRPC Python tools.
+
+Supported Python Versions
+-------------------------
+Python >= 3.5
+
+Deprecated Python Versions
+--------------------------
+Python == 2.7. Python 2.7 support will be removed on January 1, 2020.
+
+Installation
+------------
+
+The gRPC Python tools package is available for Linux, Mac OS X, and Windows
+running Python 2.7.
+
+Installing From PyPI
+~~~~~~~~~~~~~~~~~~~~
+
+If you are installing locally...
+
+::
+
+  $ pip install grpcio-tools
+
+Else system wide (on Ubuntu)...
+
+::
+
+  $ sudo pip install grpcio-tools
+
+If you're on Windows make sure that you installed the :code:`pip.exe` component
+when you installed Python (if not go back and install it!) then invoke:
+
+::
+
+  $ pip.exe install grpcio-tools
+
+Windows users may need to invoke :code:`pip.exe` from a command line ran as
+administrator.
+
+n.b. On Windows and on Mac OS X one *must* have a recent release of :code:`pip`
+to retrieve the proper wheel from PyPI. Be sure to upgrade to the latest
+version!
+
+You might also need to install Cython to handle installation via the source
+distribution if gRPC Python's system coverage with wheels does not happen to
+include your system.
+
+Installing From Source
+~~~~~~~~~~~~~~~~~~~~~~
+
+Building from source requires that you have the Python headers (usually a
+package named :code:`python-dev`) and Cython installed. It further requires a
+GCC-like compiler to go smoothly; you can probably get it to work without
+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 -b RELEASE_TAG_HERE https://github.com/grpc/grpc $REPO_ROOT
+  $ cd $REPO_ROOT
+  $ git submodule update --init
+
+  $ cd tools/distrib/python/grpcio_tools
+  $ python ../make_grpcio_tools.py
+
+  # For the next command do `sudo pip install` if you get permission-denied errors
+  $ GRPC_PYTHON_BUILD_WITH_CYTHON=1 pip install .
+
+You cannot currently install Python from source on Windows. Things might work
+out for you in MSYS2 (follow the Linux instructions), but it isn't officially
+supported at the moment.
+
+Troubleshooting
+~~~~~~~~~~~~~~~
+
+Help, I ...
+
+* **... see a** :code:`pkg_resources.VersionConflict` **when I try to install
+  grpc**
+
+  This is likely because :code:`pip` doesn't own the offending dependency,
+  which in turn is likely because your operating system's package manager owns
+  it. You'll need to force the installation of the dependency:
+
+  :code:`pip install --ignore-installed $OFFENDING_DEPENDENCY`
+
+  For example, if you get an error like the following:
+
+  ::
+
+    Traceback (most recent call last):
+    File "<string>", line 17, in <module>
+     ...
+    File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 509, in find
+      raise VersionConflict(dist, req)
+    pkg_resources.VersionConflict: (six 1.8.0 (/usr/lib/python2.7/dist-packages), Requirement.parse('six>=1.10'))
+
+  You can fix it by doing:
+
+  ::
+
+    sudo pip install --ignore-installed six
+
+* **... see compiler errors on some platforms when either installing from source or from the source distribution**
+
+  If you see
+
+  ::
+
+    /tmp/pip-build-U8pSsr/cython/Cython/Plex/Scanners.c:4:20: fatal error: Python.h: No such file or directory
+    #include "Python.h"
+                    ^
+    compilation terminated.
+
+  You can fix it by installing `python-dev` package. i.e
+
+  ::
+
+    sudo apt-get install python-dev
+
+  If you see something similar to:
+
+  ::
+
+    third_party/protobuf/src/google/protobuf/stubs/mathlimits.h:173:31: note: in expansion of macro 'SIGNED_INT_MAX'
+    static const Type kPosMax = SIGNED_INT_MAX(Type); \\
+                               ^
+
+  And your toolchain is GCC (at the time of this writing, up through at least
+  GCC 6.0), this is probably a bug where GCC chokes on constant expressions
+  when the :code:`-fwrapv` flag is specified. You should consider setting your
+  environment with :code:`CFLAGS=-fno-wrapv` or using clang (:code:`CC=clang`).
+
+Usage
+-----
+
+Given protobuf include directories :code:`$INCLUDE`, an output directory
+:code:`$OUTPUT`, and proto files :code:`$PROTO_FILES`, invoke as:
+
+::
+
+  $ python -m grpc.tools.protoc -I$INCLUDE --python_out=$OUTPUT --grpc_python_out=$OUTPUT $PROTO_FILES
+
+To use as a build step in distutils-based projects, you may use the provided
+command class in your :code:`setup.py`:
+
+::
+
+  setuptools.setup(
+    # ...
+    cmdclass={
+      'build_proto_modules': grpc.tools.command.BuildPackageProtos,
+    }
+    # ...
+  )
+
+Invocation of the command will walk the project tree and transpile every
+:code:`.proto` file into a :code:`_pb2.py` file in the same directory.
+
+Note that this particular approach requires :code:`grpcio-tools` to be
+installed on the machine before the setup script is invoked (i.e. no
+combination of :code:`setup_requires` or :code:`install_requires` will provide
+access to :code:`grpc.tools.command.BuildPackageProtos` if it isn't already
+installed). One way to work around this can be found in our
+:code:`grpcio-health-checking`
+`package <https://pypi.python.org/pypi/grpcio-health-checking>`_:
+
+::
+
+  class BuildPackageProtos(setuptools.Command):
+    """Command to generate project *_pb2.py modules from proto files."""
+    # ...
+    def run(self):
+      from grpc.tools import command
+      command.build_package_protos(self.distribution.package_dir[''])
+
+Now including :code:`grpcio-tools` in :code:`setup_requires` will provide the
+command on-setup as desired.
+
+For more information on command classes, consult :code:`distutils` and
+:code:`setuptools` documentation.
diff --git a/grpc/tools/distrib/python/grpcio_tools/_parallel_compile_patch.py b/grpc/tools/distrib/python/grpcio_tools/_parallel_compile_patch.py
new file mode 100644
index 00000000..4d03ef49
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/_parallel_compile_patch.py
@@ -0,0 +1,63 @@
+# Copyright 2018 The gRPC 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.
+"""Patches the compile() to allow enable parallel compilation of C/C++.
+
+build_ext has lots of C/C++ files and normally them one by one.
+Enabling parallel build helps a lot.
+"""
+
+import distutils.ccompiler
+import os
+
+try:
+    BUILD_EXT_COMPILER_JOBS = int(
+        os.environ.get('GRPC_PYTHON_BUILD_EXT_COMPILER_JOBS', '1'))
+except ValueError:
+    BUILD_EXT_COMPILER_JOBS = 1
+
+
+# monkey-patch for parallel compilation
+def _parallel_compile(self,
+                      sources,
+                      output_dir=None,
+                      macros=None,
+                      include_dirs=None,
+                      debug=0,
+                      extra_preargs=None,
+                      extra_postargs=None,
+                      depends=None):
+    # setup the same way as distutils.ccompiler.CCompiler
+    # https://github.com/python/cpython/blob/31368a4f0e531c19affe2a1becd25fc316bc7501/Lib/distutils/ccompiler.py#L564
+    macros, objects, extra_postargs, pp_opts, build = self._setup_compile(
+        output_dir, macros, include_dirs, sources, depends, extra_postargs)
+    cc_args = self._get_cc_args(pp_opts, debug, extra_preargs)
+
+    def _compile_single_file(obj):
+        try:
+            src, ext = build[obj]
+        except KeyError:
+            return
+        self._compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
+
+    # run compilation of individual files in parallel
+    import multiprocessing.pool
+    multiprocessing.pool.ThreadPool(BUILD_EXT_COMPILER_JOBS).map(
+        _compile_single_file, objects)
+    return objects
+
+
+def monkeypatch_compile_maybe():
+    """Monkeypatching is dumb, but the build speed gain is worth it."""
+    if BUILD_EXT_COMPILER_JOBS > 1:
+        distutils.ccompiler.CCompiler.compile = _parallel_compile
diff --git a/grpc/tools/distrib/python/grpcio_tools/grpc_tools/__init__.py b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/__init__.py
new file mode 100644
index 00000000..5772620b
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2016 gRPC 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.
diff --git a/grpc/tools/distrib/python/grpcio_tools/grpc_tools/_protoc_compiler.pyx b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/_protoc_compiler.pyx
new file mode 100644
index 00000000..481b5a4f
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/_protoc_compiler.pyx
@@ -0,0 +1,24 @@
+# Copyright 2016 gRPC 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.
+
+from libc cimport stdlib
+
+cdef extern from "grpc_tools/main.h":
+  int protoc_main(int argc, char *argv[])
+
+def run_main(list args not None):
+  cdef char **argv = <char **>stdlib.malloc(len(args)*sizeof(char *))
+  for i in range(len(args)):
+    argv[i] = args[i]
+  return protoc_main(len(args), argv)
diff --git a/grpc/tools/distrib/python/grpcio_tools/grpc_tools/command.py b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/command.py
new file mode 100644
index 00000000..b1669db3
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/command.py
@@ -0,0 +1,70 @@
+# Copyright 2016 gRPC 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 os
+import pkg_resources
+import sys
+
+import setuptools
+
+from grpc_tools import protoc
+
+
+def build_package_protos(package_root, strict_mode=False):
+    proto_files = []
+    inclusion_root = os.path.abspath(package_root)
+    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)))
+
+    well_known_protos_include = pkg_resources.resource_filename(
+        'grpc_tools', '_proto')
+
+    for proto_file in proto_files:
+        command = [
+            'grpc_tools.protoc',
+            '--proto_path={}'.format(inclusion_root),
+            '--proto_path={}'.format(well_known_protos_include),
+            '--python_out={}'.format(inclusion_root),
+            '--grpc_python_out={}'.format(inclusion_root),
+        ] + [proto_file]
+        if protoc.main(command) != 0:
+            if strict_mode:
+                raise Exception('error: {} failed'.format(command))
+            else:
+                sys.stderr.write('warning: {} failed'.format(command))
+
+
+class BuildPackageProtos(setuptools.Command):
+    """Command to generate project *_pb2.py modules from proto files."""
+
+    description = 'build grpc protobuf modules'
+    user_options = [('strict-mode', 's',
+                     'exit with non-zero value if the proto compiling fails.')]
+
+    def initialize_options(self):
+        self.strict_mode = False
+
+    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).
+        build_package_protos(self.distribution.package_dir[''],
+                             self.strict_mode)
diff --git a/grpc/tools/distrib/python/grpcio_tools/grpc_tools/main.cc b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/main.cc
new file mode 100644
index 00000000..65933865
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/main.cc
@@ -0,0 +1,38 @@
+// Copyright 2016 gRPC 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.
+
+#include <google/protobuf/compiler/command_line_interface.h>
+#include <google/protobuf/compiler/python/python_generator.h>
+
+#include "src/compiler/python_generator.h"
+
+#include "grpc_tools/main.h"
+
+int protoc_main(int argc, char* argv[]) {
+  google::protobuf::compiler::CommandLineInterface cli;
+  cli.AllowPlugins("protoc-");
+
+  // Proto2 Python
+  google::protobuf::compiler::python::Generator py_generator;
+  cli.RegisterGenerator("--python_out", &py_generator,
+                        "Generate Python source file.");
+
+  // gRPC Python
+  grpc_python_generator::GeneratorConfiguration grpc_py_config;
+  grpc_python_generator::PythonGrpcGenerator grpc_py_generator(grpc_py_config);
+  cli.RegisterGenerator("--grpc_python_out", &grpc_py_generator,
+                        "Generate Python source file.");
+
+  return cli.Run(argc, argv);
+}
diff --git a/grpc/tools/distrib/python/grpcio_tools/grpc_tools/main.h b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/main.h
new file mode 100644
index 00000000..9a1df202
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/main.h
@@ -0,0 +1,18 @@
+// Copyright 2016 gRPC 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.
+
+
+// We declare `protoc_main` here since we want access to it from Cython as an
+// extern but *without* triggering a dllimport declspec when on Windows.
+int protoc_main(int argc, char *argv[]);
diff --git a/grpc/tools/distrib/python/grpcio_tools/grpc_tools/protoc.py b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/protoc.py
new file mode 100644
index 00000000..582cba0e
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/grpc_tools/protoc.py
@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+
+# Copyright 2016 gRPC 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 pkg_resources
+import sys
+
+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')
+    sys.exit(main(sys.argv + ['-I{}'.format(proto_include)]))
diff --git a/grpc/tools/distrib/python/grpcio_tools/grpc_version.py b/grpc/tools/distrib/python/grpcio_tools/grpc_version.py
new file mode 100644
index 00000000..2aeab682
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/grpc_version.py
@@ -0,0 +1,17 @@
+# Copyright 2015 gRPC 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.
+
+# AUTO-GENERATED FROM `$REPO_ROOT/templates/tools/distrib/python/grpcio_tools/grpc_version.py.template`!!!
+
+VERSION = '1.29.1'
diff --git a/grpc/tools/distrib/python/grpcio_tools/protoc_lib_deps.py b/grpc/tools/distrib/python/grpcio_tools/protoc_lib_deps.py
new file mode 100644
index 00000000..a557be55
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/protoc_lib_deps.py
@@ -0,0 +1,23 @@
+
+# Copyright 2017 gRPC 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.
+
+# AUTO-GENERATED BY make_grpcio_tools.py!
+CC_FILES=['google/protobuf/compiler/zip_writer.cc', 'google/protobuf/compiler/subprocess.cc', 'google/protobuf/compiler/ruby/ruby_generator.cc', 'google/protobuf/compiler/python/python_generator.cc', 'google/protobuf/compiler/plugin.pb.cc', 'google/protobuf/compiler/plugin.cc', 'google/protobuf/compiler/php/php_generator.cc', 'google/protobuf/compiler/objectivec/objectivec_primitive_field.cc', 'google/protobuf/compiler/objectivec/objectivec_oneof.cc', 'google/protobuf/compiler/objectivec/objectivec_message_field.cc', 'google/protobuf/compiler/objectivec/objectivec_message.cc', 'google/protobuf/compiler/objectivec/objectivec_map_field.cc', 'google/protobuf/compiler/objectivec/objectivec_helpers.cc', 'google/protobuf/compiler/objectivec/objectivec_generator.cc', 'google/protobuf/compiler/objectivec/objectivec_file.cc', 'google/protobuf/compiler/objectivec/objectivec_field.cc', 'google/protobuf/compiler/objectivec/objectivec_extension.cc', 'google/protobuf/compiler/objectivec/objectivec_enum_field.cc', 'google/protobuf/compiler/objectivec/objectivec_enum.cc', 'google/protobuf/compiler/js/well_known_types_embed.cc', 'google/protobuf/compiler/js/js_generator.cc', 'google/protobuf/compiler/java/java_string_field_lite.cc', 'google/protobuf/compiler/java/java_string_field.cc', 'google/protobuf/compiler/java/java_shared_code_generator.cc', 'google/protobuf/compiler/java/java_service.cc', 'google/protobuf/compiler/java/java_primitive_field_lite.cc', 'google/protobuf/compiler/java/java_primitive_field.cc', 'google/protobuf/compiler/java/java_name_resolver.cc', 'google/protobuf/compiler/java/java_message_lite.cc', 'google/protobuf/compiler/java/java_message_field_lite.cc', 'google/protobuf/compiler/java/java_message_field.cc', 'google/protobuf/compiler/java/java_message_builder_lite.cc', 'google/protobuf/compiler/java/java_message_builder.cc', 'google/protobuf/compiler/java/java_message.cc', 'google/protobuf/compiler/java/java_map_field_lite.cc', 'google/protobuf/compiler/java/java_map_field.cc', 'google/protobuf/compiler/java/java_helpers.cc', 'google/protobuf/compiler/java/java_generator_factory.cc', 'google/protobuf/compiler/java/java_generator.cc', 'google/protobuf/compiler/java/java_file.cc', 'google/protobuf/compiler/java/java_field.cc', 'google/protobuf/compiler/java/java_extension_lite.cc', 'google/protobuf/compiler/java/java_extension.cc', 'google/protobuf/compiler/java/java_enum_lite.cc', 'google/protobuf/compiler/java/java_enum_field_lite.cc', 'google/protobuf/compiler/java/java_enum_field.cc', 'google/protobuf/compiler/java/java_enum.cc', 'google/protobuf/compiler/java/java_doc_comment.cc', 'google/protobuf/compiler/java/java_context.cc', 'google/protobuf/compiler/csharp/csharp_wrapper_field.cc', 'google/protobuf/compiler/csharp/csharp_source_generator_base.cc', 'google/protobuf/compiler/csharp/csharp_repeated_primitive_field.cc', 'google/protobuf/compiler/csharp/csharp_repeated_message_field.cc', 'google/protobuf/compiler/csharp/csharp_repeated_enum_field.cc', 'google/protobuf/compiler/csharp/csharp_reflection_class.cc', 'google/protobuf/compiler/csharp/csharp_primitive_field.cc', 'google/protobuf/compiler/csharp/csharp_message_field.cc', 'google/protobuf/compiler/csharp/csharp_message.cc', 'google/protobuf/compiler/csharp/csharp_map_field.cc', 'google/protobuf/compiler/csharp/csharp_helpers.cc', 'google/protobuf/compiler/csharp/csharp_generator.cc', 'google/protobuf/compiler/csharp/csharp_field_base.cc', 'google/protobuf/compiler/csharp/csharp_enum_field.cc', 'google/protobuf/compiler/csharp/csharp_enum.cc', 'google/protobuf/compiler/csharp/csharp_doc_comment.cc', 'google/protobuf/compiler/cpp/cpp_string_field.cc', 'google/protobuf/compiler/cpp/cpp_service.cc', 'google/protobuf/compiler/cpp/cpp_primitive_field.cc', 'google/protobuf/compiler/cpp/cpp_padding_optimizer.cc', 'google/protobuf/compiler/cpp/cpp_message_field.cc', 'google/protobuf/compiler/cpp/cpp_message.cc', 'google/protobuf/compiler/cpp/cpp_map_field.cc', 'google/protobuf/compiler/cpp/cpp_helpers.cc', 'google/protobuf/compiler/cpp/cpp_generator.cc', 'google/protobuf/compiler/cpp/cpp_file.cc', 'google/protobuf/compiler/cpp/cpp_field.cc', 'google/protobuf/compiler/cpp/cpp_extension.cc', 'google/protobuf/compiler/cpp/cpp_enum_field.cc', 'google/protobuf/compiler/cpp/cpp_enum.cc', 'google/protobuf/compiler/command_line_interface.cc', 'google/protobuf/compiler/code_generator.cc', 'google/protobuf/wrappers.pb.cc', 'google/protobuf/wire_format.cc', 'google/protobuf/util/type_resolver_util.cc', 'google/protobuf/util/time_util.cc', 'google/protobuf/util/message_differencer.cc', 'google/protobuf/util/json_util.cc', 'google/protobuf/util/internal/utility.cc', 'google/protobuf/util/internal/type_info_test_helper.cc', 'google/protobuf/util/internal/type_info.cc', 'google/protobuf/util/internal/protostream_objectwriter.cc', 'google/protobuf/util/internal/protostream_objectsource.cc', 'google/protobuf/util/internal/proto_writer.cc', 'google/protobuf/util/internal/object_writer.cc', 'google/protobuf/util/internal/json_stream_parser.cc', 'google/protobuf/util/internal/json_objectwriter.cc', 'google/protobuf/util/internal/json_escaping.cc', 'google/protobuf/util/internal/field_mask_utility.cc', 'google/protobuf/util/internal/error_listener.cc', 'google/protobuf/util/internal/default_value_objectwriter.cc', 'google/protobuf/util/internal/datapiece.cc', 'google/protobuf/util/field_mask_util.cc', 'google/protobuf/util/field_comparator.cc', 'google/protobuf/util/delimited_message_util.cc', 'google/protobuf/unknown_field_set.cc', 'google/protobuf/type.pb.cc', 'google/protobuf/timestamp.pb.cc', 'google/protobuf/text_format.cc', 'google/protobuf/stubs/substitute.cc', 'google/protobuf/struct.pb.cc', 'google/protobuf/source_context.pb.cc', 'google/protobuf/service.cc', 'google/protobuf/reflection_ops.cc', 'google/protobuf/message.cc', 'google/protobuf/map_field.cc', 'google/protobuf/io/tokenizer.cc', 'google/protobuf/io/printer.cc', 'google/protobuf/io/gzip_stream.cc', 'google/protobuf/generated_message_table_driven.cc', 'google/protobuf/generated_message_reflection.cc', 'google/protobuf/field_mask.pb.cc', 'google/protobuf/extension_set_heavy.cc', 'google/protobuf/empty.pb.cc', 'google/protobuf/dynamic_message.cc', 'google/protobuf/duration.pb.cc', 'google/protobuf/descriptor_database.cc', 'google/protobuf/descriptor.pb.cc', 'google/protobuf/descriptor.cc', 'google/protobuf/compiler/parser.cc', 'google/protobuf/compiler/importer.cc', 'google/protobuf/api.pb.cc', 'google/protobuf/any.pb.cc', 'google/protobuf/any.cc', 'google/protobuf/wire_format_lite.cc', 'google/protobuf/stubs/time.cc', 'google/protobuf/stubs/strutil.cc', 'google/protobuf/stubs/structurally_valid.cc', 'google/protobuf/stubs/stringprintf.cc', 'google/protobuf/stubs/stringpiece.cc', 'google/protobuf/stubs/statusor.cc', 'google/protobuf/stubs/status.cc', 'google/protobuf/stubs/int128.cc', 'google/protobuf/stubs/common.cc', 'google/protobuf/stubs/bytestream.cc', 'google/protobuf/repeated_field.cc', 'google/protobuf/parse_context.cc', 'google/protobuf/message_lite.cc', 'google/protobuf/io/zero_copy_stream_impl_lite.cc', 'google/protobuf/io/zero_copy_stream_impl.cc', 'google/protobuf/io/zero_copy_stream.cc', 'google/protobuf/io/strtod.cc', 'google/protobuf/io/io_win32.cc', 'google/protobuf/io/coded_stream.cc', 'google/protobuf/implicit_weak_message.cc', 'google/protobuf/generated_message_util.cc', 'google/protobuf/generated_message_table_driven_lite.cc', 'google/protobuf/generated_enum_util.cc', 'google/protobuf/extension_set.cc', 'google/protobuf/arena.cc', 'google/protobuf/any_lite.cc']
+PROTO_FILES=['google/protobuf/wrappers.proto', 'google/protobuf/type.proto', 'google/protobuf/timestamp.proto', 'google/protobuf/struct.proto', 'google/protobuf/source_context.proto', 'google/protobuf/field_mask.proto', 'google/protobuf/empty.proto', 'google/protobuf/duration.proto', 'google/protobuf/descriptor.proto', 'google/protobuf/compiler/plugin.proto', 'google/protobuf/api.proto', 'google/protobuf/any.proto']
+
+CC_INCLUDE='third_party/protobuf/src'
+PROTO_INCLUDE='third_party/protobuf/src'
+
+PROTOBUF_SUBMODULE_VERSION="fe1790ca0df67173702f70d5646b82f48f412b99"
diff --git a/grpc/tools/distrib/python/grpcio_tools/setup.py b/grpc/tools/distrib/python/grpcio_tools/setup.py
new file mode 100644
index 00000000..90347b52
--- /dev/null
+++ b/grpc/tools/distrib/python/grpcio_tools/setup.py
@@ -0,0 +1,226 @@
+# Copyright 2016 gRPC 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.
+
+from distutils import cygwinccompiler
+from distutils import extension
+from distutils import util
+import errno
+import os
+import os.path
+import pkg_resources
+import platform
+import re
+import shlex
+import shutil
+import sys
+import sysconfig
+
+import setuptools
+from setuptools.command import build_ext
+
+import subprocess
+from subprocess import PIPE
+
+# TODO(atash) add flag to disable Cython use
+
+_PACKAGE_PATH = os.path.realpath(os.path.dirname(__file__))
+_README_PATH = os.path.join(_PACKAGE_PATH, 'README.rst')
+
+os.chdir(os.path.dirname(os.path.abspath(__file__)))
+sys.path.insert(0, os.path.abspath('.'))
+
+import _parallel_compile_patch
+import protoc_lib_deps
+import grpc_version
+
+_parallel_compile_patch.monkeypatch_compile_maybe()
+
+CLASSIFIERS = [
+    'Development Status :: 5 - Production/Stable',
+    'Programming Language :: Python',
+    'Programming Language :: Python :: 2',
+    'Programming Language :: Python :: 2.7',
+    'Programming Language :: Python :: 3',
+    'Programming Language :: Python :: 3.4',
+    'Programming Language :: Python :: 3.5',
+    'Programming Language :: Python :: 3.6',
+    'License :: OSI Approved :: Apache Software License',
+]
+
+PY3 = sys.version_info.major == 3
+
+# Environment variable to determine whether or not the Cython extension should
+# *use* Cython or use the generated C files. Note that this requires the C files
+# to have been generated by building first *with* Cython support.
+BUILD_WITH_CYTHON = os.environ.get('GRPC_PYTHON_BUILD_WITH_CYTHON', False)
+
+
+def check_linker_need_libatomic():
+    """Test if linker on system needs libatomic."""
+    code_test = (b'#include <atomic>\n' +
+                 b'int main() { return std::atomic<int64_t>{}; }')
+    cc_test = subprocess.Popen(['cc', '-x', 'c++', '-std=c++11', '-'],
+                               stdin=PIPE,
+                               stdout=PIPE,
+                               stderr=PIPE)
+    cc_test.communicate(input=code_test)
+    return cc_test.returncode != 0
+
+
+# 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
+# ourselves in w.r.t. the multitude of operating systems this ought to build on.
+# We can also use these variables as a way to inject environment-specific
+# compiler/linker flags. We assume GCC-like compilers and/or MinGW as a
+# reasonable default.
+EXTRA_ENV_COMPILE_ARGS = os.environ.get('GRPC_PYTHON_CFLAGS', None)
+EXTRA_ENV_LINK_ARGS = os.environ.get('GRPC_PYTHON_LDFLAGS', None)
+if EXTRA_ENV_COMPILE_ARGS is None:
+    EXTRA_ENV_COMPILE_ARGS = '-std=c++11'
+    if 'win32' in sys.platform:
+        if sys.version_info < (3, 5):
+            # We use define flags here and don't directly add to DEFINE_MACROS below to
+            # ensure that the expert user/builder has a way of turning it off (via the
+            # envvars) without adding yet more GRPC-specific envvars.
+            # See https://sourceforge.net/p/mingw-w64/bugs/363/
+            if '32' in platform.architecture()[0]:
+                EXTRA_ENV_COMPILE_ARGS += ' -D_ftime=_ftime32 -D_timeb=__timeb32 -D_ftime_s=_ftime32_s -D_hypot=hypot'
+            else:
+                EXTRA_ENV_COMPILE_ARGS += ' -D_ftime=_ftime64 -D_timeb=__timeb64 -D_hypot=hypot'
+        else:
+            # We need to statically link the C++ Runtime, only the C runtime is
+            # available dynamically
+            EXTRA_ENV_COMPILE_ARGS += ' /MT'
+    elif "linux" in sys.platform or "darwin" in sys.platform:
+        EXTRA_ENV_COMPILE_ARGS += ' -fno-wrapv -frtti'
+if EXTRA_ENV_LINK_ARGS is None:
+    EXTRA_ENV_LINK_ARGS = ''
+    if "linux" in sys.platform or "darwin" in sys.platform:
+        EXTRA_ENV_LINK_ARGS += ' -lpthread'
+        if check_linker_need_libatomic():
+            EXTRA_ENV_LINK_ARGS += ' -latomic'
+    elif "win32" in sys.platform and sys.version_info < (3, 5):
+        msvcr = cygwinccompiler.get_msvcr()[0]
+        EXTRA_ENV_LINK_ARGS += (
+            ' -static-libgcc -static-libstdc++ -mcrtdll={msvcr}'
+            ' -static -lshlwapi'.format(msvcr=msvcr))
+
+EXTRA_COMPILE_ARGS = shlex.split(EXTRA_ENV_COMPILE_ARGS)
+EXTRA_LINK_ARGS = shlex.split(EXTRA_ENV_LINK_ARGS)
+
+CC_FILES = [os.path.normpath(cc_file) for cc_file in protoc_lib_deps.CC_FILES]
+PROTO_FILES = [
+    os.path.normpath(proto_file) for proto_file in protoc_lib_deps.PROTO_FILES
+]
+CC_INCLUDE = os.path.normpath(protoc_lib_deps.CC_INCLUDE)
+PROTO_INCLUDE = os.path.normpath(protoc_lib_deps.PROTO_INCLUDE)
+
+GRPC_PYTHON_TOOLS_PACKAGE = 'grpc_tools'
+GRPC_PYTHON_PROTO_RESOURCES_NAME = '_proto'
+
+DEFINE_MACROS = ()
+if "win32" in sys.platform:
+    DEFINE_MACROS += (('WIN32_LEAN_AND_MEAN', 1),)
+    if '64bit' in platform.architecture()[0]:
+        DEFINE_MACROS += (('MS_WIN64', 1),)
+elif "linux" in sys.platform or "darwin" in sys.platform:
+    DEFINE_MACROS += (('HAVE_PTHREAD', 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'
+        os.environ['_PYTHON_HOST_PLATFORM'] = re.sub(
+            r'macosx-[0-9]+\.[0-9]+-(.+)', r'macosx-10.9-\1',
+            util.get_platform())
+
+
+def package_data():
+    tools_path = GRPC_PYTHON_TOOLS_PACKAGE.replace('.', os.path.sep)
+    proto_resources_path = os.path.join(tools_path,
+                                        GRPC_PYTHON_PROTO_RESOURCES_NAME)
+    proto_files = []
+    for proto_file in PROTO_FILES:
+        source = os.path.join(PROTO_INCLUDE, proto_file)
+        target = os.path.join(proto_resources_path, proto_file)
+        relative_target = os.path.join(GRPC_PYTHON_PROTO_RESOURCES_NAME,
+                                       proto_file)
+        try:
+            os.makedirs(os.path.dirname(target))
+        except OSError as error:
+            if error.errno == errno.EEXIST:
+                pass
+            else:
+                raise
+        shutil.copy(source, target)
+        proto_files.append(relative_target)
+    return {GRPC_PYTHON_TOOLS_PACKAGE: proto_files}
+
+
+def extension_modules():
+    if BUILD_WITH_CYTHON:
+        plugin_sources = [os.path.join('grpc_tools', '_protoc_compiler.pyx')]
+    else:
+        plugin_sources = [os.path.join('grpc_tools', '_protoc_compiler.cpp')]
+
+    plugin_sources += [
+        os.path.join('grpc_tools', 'main.cc'),
+        os.path.join('grpc_root', 'src', 'compiler', 'python_generator.cc')
+    ] + [os.path.join(CC_INCLUDE, cc_file) for cc_file in CC_FILES]
+
+    plugin_ext = extension.Extension(
+        name='grpc_tools._protoc_compiler',
+        sources=plugin_sources,
+        include_dirs=[
+            '.',
+            'grpc_root',
+            os.path.join('grpc_root', 'include'),
+            CC_INCLUDE,
+        ],
+        language='c++',
+        define_macros=list(DEFINE_MACROS),
+        extra_compile_args=list(EXTRA_COMPILE_ARGS),
+        extra_link_args=list(EXTRA_LINK_ARGS),
+    )
+    extensions = [plugin_ext]
+    if BUILD_WITH_CYTHON:
+        from Cython import Build
+        return Build.cythonize(extensions)
+    else:
+        return extensions
+
+
+setuptools.setup(
+    name='grpcio-tools',
+    version=grpc_version.VERSION,
+    description='Protobuf code generator for gRPC',
+    long_description=open(_README_PATH, 'r').read(),
+    author='The gRPC Authors',
+    author_email='grpc-io@googlegroups.com',
+    url='https://grpc.io',
+    license='Apache License 2.0',
+    classifiers=CLASSIFIERS,
+    ext_modules=extension_modules(),
+    packages=setuptools.find_packages('.'),
+    install_requires=[
+        'protobuf>=3.5.0.post1',
+        'grpcio>={version}'.format(version=grpc_version.VERSION),
+    ],
+    package_data=package_data(),
+)