Use precompiled extensions only
diff --git a/src/python/grpcio/precompiled.py b/src/python/grpcio/precompiled.py
new file mode 100644
index 0000000..05c651b
--- /dev/null
+++ b/src/python/grpcio/precompiled.py
@@ -0,0 +1,102 @@
+# Copyright 2015-2016, 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 platform
+import shutil
+import sys
+
+import setuptools
+
+import commands
+import grpc_version
+
+try:
+ from urllib2 import urlopen
+except ImportError:
+ from urllib.request import urlopen
+
+PYTHON_STEM = os.path.dirname(os.path.abspath(__file__))
+BINARIES_REPOSITORY = os.environ.get(
+ 'GRPC_PYTHON_BINARIES_REPOSITORY',
+ 'https://storage.googleapis.com/grpc-precompiled-binaries/python')
+USE_PRECOMPILED_BINARIES = bool(int(os.environ.get(
+ 'GRPC_PYTHON_USE_PRECOMPILED_BINARIES', '1')))
+
+def _tagged_ext_name(base):
+ uname = platform.uname()
+ tags = '-'.join((grpc_version.VERSION, uname[0], uname[4]))
+ flavor = 'ucs2' if sys.maxunicode == 65535 else 'ucs4'
+ return '{base}-{tags}-{flavor}'.format(base=base, tags=tags, flavor=flavor)
+
+
+class BuildTaggedExt(setuptools.Command):
+
+ description = 'build the gRPC tagged extensions'
+ user_options = []
+
+ def initialize_options(self):
+ # distutils requires this override.
+ pass
+
+ def finalize_options(self):
+ # distutils requires this override.
+ pass
+
+ def run(self):
+ if 'linux' in sys.platform:
+ self.run_command('build_ext')
+ try:
+ os.makedirs('dist/')
+ except OSError:
+ pass
+ shutil.copyfile(
+ os.path.join(PYTHON_STEM, 'grpc/_cython/cygrpc.so'),
+ 'dist/{}.so'.format(_tagged_ext_name('cygrpc')))
+ else:
+ sys.stderr.write('nothing to do for build_tagged_ext\n')
+
+
+def update_setup_arguments(setup_arguments):
+ url = '{}/{}.so'.format(BINARIES_REPOSITORY, _tagged_ext_name('cygrpc'))
+ target_path = os.path.join(PYTHON_STEM, 'grpc/_cython/cygrpc.so')
+ try:
+ extension = urlopen(url).read()
+ except:
+ sys.stderr.write(
+ 'could not download precompiled extension: {}\n'.format(url))
+ return
+ try:
+ with open(target_path, 'w') as target:
+ target.write(extension)
+ setup_arguments['ext_modules'] = []
+ except:
+ sys.stderr.write(
+ 'could not write precompiled extension to directory: {} -> {}\n'
+ .format(url, target_path))