scripts/fetch_gae_sdk.py
#!/usr/bin/env python
# Copyright 2015 Google Inc. 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.
# Retrieved from https://github.com/Google/oauth2client
"""Fetch the most recent GAE SDK and decompress it in the current directory.
Usage:
fetch_gae_sdk.py [<dest_dir>]
Current releases are listed here:
https://www.googleapis.com/storage/v1/b/appengine-sdks/o?prefix=featured
"""
import json
import os
import StringIO
import sys
import urllib2
import zipfile
_SDK_URL = (
'https://www.googleapis.com/storage/v1/b/appengine-sdks/o?prefix=featured')
def get_gae_versions():
try:
version_info_json = urllib2.urlopen(_SDK_URL).read()
except:
return {}
try:
version_info = json.loads(version_info_json)
except:
return {}
return version_info.get('items', {})
def _version_tuple(v):
version_string = os.path.splitext(v['name'])[0].rpartition('_')[2]
return tuple(int(x) for x in version_string.split('.'))
def get_sdk_urls(sdk_versions):
python_releases = [
v for v in sdk_versions
if v['name'].startswith('featured/google_appengine')]
current_releases = sorted(
python_releases, key=_version_tuple, reverse=True)
return [release['mediaLink'] for release in current_releases]
def main(argv):
if len(argv) > 2:
print('Usage: {} [<destination_dir>]'.format(argv[0]))
return 1
dest_dir = argv[1] if len(argv) > 1 else '.'
if not os.path.exists(dest_dir):
os.makedirs(dest_dir)
if os.path.exists(os.path.join(dest_dir, 'google_appengine')):
print('GAE SDK already installed at {}, exiting.'.format(dest_dir))
return 0
sdk_versions = get_gae_versions()
if not sdk_versions:
print('Error fetching GAE SDK version info')
return 1
sdk_urls = get_sdk_urls(sdk_versions)
for sdk_url in sdk_urls:
try:
sdk_contents = StringIO.StringIO(urllib2.urlopen(sdk_url).read())
break
except:
pass
else:
print('Could not read SDK from any of {}'.format(sdk_urls))
return 1
sdk_contents.seek(0)
try:
zip_contents = zipfile.ZipFile(sdk_contents)
zip_contents.extractall(dest_dir)
print('GAE SDK Installed to {}.'.format(dest_dir))
except:
print('Error extracting SDK contents')
return 1
if __name__ == '__main__':
sys.exit(main(sys.argv[:]))