1 files changed, 102 insertions, 0 deletions
diff --git a/src/python/grpcio/precompiled.py b/src/python/grpcio/precompiled.py
new file mode 100644
index 0000000000..05c651b506
--- /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))