inventory_to_records.py 文件源码

def fetch_release_metadata(session, record):
    """The `candidates` folder contains build info about recent released versions.
    """
    global _candidates_build_folder

    product = record['source']['product']
    version = record['target']['version']
    platform = record['target']['platform']
    locale = 'en-US'

    try:
        latest_build_folder = _candidates_build_folder[product][version]
    except KeyError:
        # Version is not listed in candidates. Give up.
        return None

    build_number = int(latest_build_folder.strip('/')[-1])  # build3 -> 3

    # Metadata for EME-free and sha1 repacks are the same as original release.
    platform = re.sub('-(eme-free|sha1)', '', platform, flags=re.I)

    url = archive_url(product, version, platform, locale, candidate='/' + latest_build_folder)

    # We already have the metadata for this platform and version.
    if url in _release_metadata:
        return _release_metadata[url]

    try:
        _, files = await fetch_listing(session, url)
    except ValueError:
        # Some partial update don't have metadata. eg. /47.0.1-candidates/
        _release_metadata[url] = None
        return None

    for f in files:
        filename = f['name']
        if is_release_build_metadata(product, version, filename):
            try:
                metadata = await fetch_json(session, url + filename)
                metadata['buildnumber'] = build_number
                _release_metadata[url] = metadata
                return metadata
            except aiohttp.ClientError as e:
                # Sometimes, some XML comes out \o/ (see #259)
                pass

    # Version exists in candidates but has no metadata!
    _release_metadata[url] = None  # Don't try it anymore.
    raise ValueError('Missing metadata for candidate {}'.format(url))