| #!/usr/bin/env python |
| """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 tempfile |
| 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 ', sdk_urls |
| return 1 |
| sdk_contents.seek(0) |
| try: |
| zip_contents = zipfile.ZipFile(sdk_contents) |
| zip_contents.extractall(dest_dir) |
| except: |
| print 'Error extracting SDK contents' |
| return 1 |
| |
| if __name__ == '__main__': |
| sys.exit(main(sys.argv[:])) |
