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#!/usr/bin/env python
# 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.
from __future__ import print_function
import errno
import filecmp
import glob
import os
import os.path
import shutil
import subprocess
import sys
import traceback
import uuid
DEPS_FILE_CONTENT="""
# 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.
# AUTO-GENERATED BY make_grpcio_tools.py!
CC_FILES={cc_files}
PROTO_FILES={proto_files}
CC_INCLUDE={cc_include}
PROTO_INCLUDE={proto_include}
"""
# Bazel query result prefix for expected source files in protobuf.
PROTOBUF_CC_PREFIX = '//:src/'
PROTOBUF_PROTO_PREFIX = '//:src/'
GRPC_ROOT = os.path.abspath(
os.path.join(os.path.dirname(os.path.abspath(__file__)),
'..', '..', '..'))
GRPC_PYTHON_ROOT = os.path.join(GRPC_ROOT, 'tools/distrib/python/grpcio_tools')
GRPC_PYTHON_PROTOBUF_RELATIVE_ROOT = 'third_party/protobuf/src'
GRPC_PROTOBUF = os.path.join(GRPC_ROOT, GRPC_PYTHON_PROTOBUF_RELATIVE_ROOT)
GRPC_PROTOC_PLUGINS = os.path.join(GRPC_ROOT, 'src/compiler')
GRPC_PYTHON_PROTOBUF = os.path.join(GRPC_PYTHON_ROOT,
'third_party/protobuf/src')
GRPC_PYTHON_PROTOC_PLUGINS = os.path.join(GRPC_PYTHON_ROOT,
'grpc_root/src/compiler')
GRPC_PYTHON_PROTOC_LIB_DEPS = os.path.join(GRPC_PYTHON_ROOT,
'protoc_lib_deps.py')
GRPC_INCLUDE = os.path.join(GRPC_ROOT, 'include')
GRPC_PYTHON_INCLUDE = os.path.join(GRPC_PYTHON_ROOT, 'grpc_root/include')
BAZEL_DEPS = os.path.join(GRPC_ROOT, 'tools/distrib/python/bazel_deps.sh')
BAZEL_DEPS_PROTOC_LIB_QUERY = '//:protoc_lib'
BAZEL_DEPS_COMMON_PROTOS_QUERY = '//:well_known_protos'
def bazel_query(query):
output = subprocess.check_output([BAZEL_DEPS, query])
return output.splitlines()
def get_deps():
"""Write the result of the bazel query `query` against protobuf to
`out_file`."""
cc_files_output = bazel_query(BAZEL_DEPS_PROTOC_LIB_QUERY)
cc_files = [
name[len(PROTOBUF_CC_PREFIX):] for name in cc_files_output
if name.endswith('.cc') and name.startswith(PROTOBUF_CC_PREFIX)]
proto_files_output = bazel_query(BAZEL_DEPS_COMMON_PROTOS_QUERY)
proto_files = [
name[len(PROTOBUF_PROTO_PREFIX):] for name in proto_files_output
if name.endswith('.proto') and name.startswith(PROTOBUF_PROTO_PREFIX)]
deps_file_content = DEPS_FILE_CONTENT.format(
cc_files=cc_files,
proto_files=proto_files,
cc_include=repr(GRPC_PYTHON_PROTOBUF_RELATIVE_ROOT),
proto_include=repr(GRPC_PYTHON_PROTOBUF_RELATIVE_ROOT))
return deps_file_content
def long_path(path):
if os.name == 'nt':
return '\\\\?\\' + path
else:
return path
def atomic_file_copy(src, dst):
"""Based on the lock-free-whack-a-mole algorithm, depending on filesystem
renaming being atomic. Described at http://stackoverflow.com/a/28090883.
"""
try:
if filecmp.cmp(src, dst):
return
except:
pass
dst_dir = os.path.abspath(os.path.dirname(dst))
dst_base = os.path.basename(dst)
this_id = str(uuid.uuid4()).replace('.', '-')
temporary_file = os.path.join(dst_dir, '{}.{}.tmp'.format(dst_base, this_id))
mole_file = os.path.join(dst_dir, '{}.{}.mole.tmp'.format(dst_base, this_id))
mole_pattern = os.path.join(dst_dir, '{}.*.mole.tmp'.format(dst_base))
src = long_path(src)
dst = long_path(dst)
temporary_file = long_path(temporary_file)
mole_file = long_path(mole_file)
mole_pattern = long_path(mole_pattern)
shutil.copy2(src, temporary_file)
try:
os.rename(temporary_file, mole_file)
except:
print('Error moving temporary file {} to {}'.format(temporary_file, mole_file), file=sys.stderr)
print('while trying to copy file {} to {}'.format(src, dst), file=sys.stderr)
raise
for other_file in glob.glob(mole_pattern):
other_id = other_file.split('.')[-3]
if this_id == other_id:
pass
elif this_id < other_id:
try:
os.remove(other_file)
except:
pass
else:
try:
os.remove(mole_file)
except:
pass
this_id = other_id
mole_file = other_file
try:
if filecmp.cmp(src, dst):
try:
os.remove(mole_file)
except:
pass
return
except:
pass
try:
os.rename(mole_file, dst)
except:
pass
def main():
os.chdir(GRPC_ROOT)
for source, target in [
(GRPC_PROTOBUF, GRPC_PYTHON_PROTOBUF),
(GRPC_PROTOC_PLUGINS, GRPC_PYTHON_PROTOC_PLUGINS),
(GRPC_INCLUDE, GRPC_PYTHON_INCLUDE)]:
for source_dir, _, files in os.walk(source):
target_dir = os.path.abspath(os.path.join(target, os.path.relpath(source_dir, source)))
try:
os.makedirs(target_dir)
except OSError as error:
if error.errno != errno.EEXIST:
raise
for relative_file in files:
source_file = os.path.abspath(os.path.join(source_dir, relative_file))
target_file = os.path.abspath(os.path.join(target_dir, relative_file))
atomic_file_copy(source_file, target_file)
try:
protoc_lib_deps_content = get_deps()
except Exception as error:
# We allow this script to succeed even if we couldn't get the dependencies,
# as then we can assume that even without a successful bazel run the
# dependencies currently in source control are 'good enough'.
sys.stderr.write("Got non-fatal error:\n")
traceback.print_exc(file=sys.stderr)
return
# If we successfully got the dependencies, truncate and rewrite the deps file.
with open(GRPC_PYTHON_PROTOC_LIB_DEPS, 'w') as deps_file:
deps_file.write(protoc_lib_deps_content)
if __name__ == '__main__':
main()
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