blob: 020aae0d3a1a1e5c1a874dad172ce3919cda8c7b [file] [log] [blame]
#!/usr/bin/env python3
#
# Copyright 2021 The Cobalt Authors. All Rights Reserved.
#
# 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.
"""Tool to update Clang toolchain used by Starboard, from Chromium repository"""
import argparse
import os
import shutil
import sys
import tarfile
import tempfile
import time
try:
import requests
except ImportError:
# Fail with an error at call time.
requests = None
def DownloadUrl(url, output_file):
chunk_size = 4096
print_n_dots = 40
response = requests.get(url, stream=True, allow_redirects=True)
response.raise_for_status()
content_length = int(response.headers.get('content-length', 0))
if not content_length:
output_file.write(response.content)
else:
downloaded = 0
dots_printed = 0
for data in response.iter_content(chunk_size=chunk_size):
output_file.write(data)
downloaded += len(data)
dots = print_n_dots * downloaded // content_length
sys.stdout.write('.' * (dots - dots_printed))
sys.stdout.flush()
dots_printed = dots
print(' Done.')
def Retry(function, exceptions_tuple, max_tries=3, retry_wait_s=5):
for i in range(max_tries):
try:
function()
break
except exceptions_tuple as e:
print(e)
if i == max_tries - 1:
raise
print('Retrying in %d s ...' % retry_wait_s)
sys.stdout.flush()
time.sleep(retry_wait_s)
continue
def DownloadAndUnpack(url, output_dir):
with tempfile.TemporaryFile() as tmpfile:
Retry(lambda: DownloadUrl(url, tmpfile), (requests.RequestException,))
tmpfile.seek(0)
if not os.path.exists(output_dir):
os.makedirs(output_dir)
t = tarfile.open(mode='r:gz', fileobj=tmpfile)
t.extractall(path=output_dir)
def UpdateClang(target_dir, revision):
""" Downloads, unpacks and stamps a particular prebuilt Clang version
from Chromium pre-tested binary releases repo.
"""
stamp_file = os.path.join(target_dir, 'cr_build_revision')
try:
with open(stamp_file, 'r') as f:
if f.read().rstrip() == revision:
return
except IOError:
pass
if os.path.exists(target_dir):
shutil.rmtree(target_dir)
cds_file = 'clang-%s.tgz' % revision
cds_full_url = os.environ.get(
'CDS_CLANG_BUCKET_OVERRIDE',
'https://commondatastorage.googleapis.com/chromium-browser-clang'
) + '/Linux_x64/' + cds_file
try:
DownloadAndUnpack(cds_full_url, target_dir)
except requests.RequestException as e:
print(e)
print('Failed to download prebuilt clang %s' % cds_full_url)
raise
with open(stamp_file, 'w') as f:
f.write(revision)
f.write('\n')
def main():
parser = argparse.ArgumentParser(description='Update clang.')
parser.add_argument('dest', help='Where to extract the clang package.')
parser.add_argument('revision', help='Force the given clang revision.')
args = parser.parse_args()
return UpdateClang(os.path.abspath(args.dest), args.revision)
if __name__ == '__main__':
sys.exit(main())