88 lines
3 KiB
Python
88 lines
3 KiB
Python
#!/usr/bin/python3
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# Copyright (C) 2022 Jelmer Vernooij <jelmer@jelmer.uk>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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import asyncio
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import logging
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from typing import List
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from aiohttp import (
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ClientSession,
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ClientConnectorError,
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ClientResponseError,
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ServerDisconnectedError,
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)
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from yarl import URL
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from .. import Requirement, USER_AGENT
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from ..debian.apt import AptManager
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from .apt import AptRequirement, AptResolver
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class DepServerError(Exception):
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def __init__(self, inner):
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self.inner = inner
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async def resolve_apt_requirement_dep_server(
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url: str, req: Requirement) -> List[AptRequirement]:
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"""Resolve a requirement to an APT requirement with a dep server.
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Args:
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url: Dep server URL
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req: Requirement to resolve
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Returns:
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List of Apt requirements.
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"""
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async with ClientSession() as session:
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try:
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async with session.post(URL(url) / "resolve-apt", headers={
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'User-Agent': USER_AGENT},
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json={'requirement': req.json()},
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raise_for_status=True) as resp:
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return [
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AptRequirement._from_json(e) for e in await resp.json()]
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except (ClientConnectorError, ClientResponseError,
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ServerDisconnectedError) as e:
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logging.warning('Unable to contact dep server: %r', e)
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raise DepServerError(e)
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class DepServerAptResolver(AptResolver):
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def __init__(self, apt, dep_server_url, tie_breakers=None):
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super(DepServerAptResolver, self).__init__(
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apt, tie_breakers=tie_breakers)
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self.dep_server_url = dep_server_url
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@classmethod
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def from_session(cls, session, dep_server_url, tie_breakers=None):
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return cls(
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AptManager.from_session(session), dep_server_url,
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tie_breakers=tie_breakers)
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def resolve_all(self, req: Requirement):
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try:
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req.json()
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except NotImplementedError:
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return super(DepServerAptResolver, self).resolve_all(req)
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try:
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return asyncio.run(
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resolve_apt_requirement_dep_server(self.dep_server_url, req))
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except DepServerError:
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logging.warning('Falling back to resolving error locally')
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return super(DepServerAptResolver, self).resolve_all(req)
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