40 lines
1.0 KiB
Python
40 lines
1.0 KiB
Python
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# MIT licensed
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# Copyright (c) 2021 lilydjwg <lilydjwg@gmail.com>, et al.
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import re
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import sre_constants
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from nvchecker.api import session, GetVersionError
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async def get_version(name, conf, *, cache, **kwargs):
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key = tuple(sorted(conf.items()))
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return await cache.get(key, get_version_impl)
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async def get_version_impl(info):
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conf = dict(info)
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url = conf['url']
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header = conf.get('header', 'Location')
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follow_redirects = conf.get('follow_redirects', False)
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method = conf.get('method', 'HEAD')
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try:
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regex = re.compile(conf['regex'])
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except sre_constants.error as e:
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raise GetVersionError('bad regex', exc_info=e)
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res = await session.request(
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url,
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method = method,
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follow_redirects = follow_redirects,
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)
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header_value = res.headers.get(header)
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if not header_value:
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raise GetVersionError('header %s not found or is empty' % header)
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try:
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version = regex.findall(header_value)
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except ValueError:
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raise GetVersionError('version string not found.')
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return version
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