Source code for thoth.adviser.digests_fetcher

#!/usr/bin/env python3
# thoth-adviser
# Copyright(C) 2018 - 2021 Fridolin Pokorny
# This program is free software: you can redistribute it and / or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY without even the implied warranty of
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <>.

"""Fetcher for fetching digests from the graph database."""

import logging
from typing import List
from typing import Dict

import attr
from thoth.storages import GraphDatabase
from thoth.python import DigestsFetcherBase

_LOGGER = logging.getLogger(__name__)

[docs]@attr.s(slots=True) class GraphDigestsFetcher(DigestsFetcherBase): # type: ignore """Fetch digests from the graph database.""" graph = attr.ib(type=GraphDatabase) @graph.default def _graph_default(self) -> GraphDatabase: """Get default graph instance if no explicitly provided.""" graph = GraphDatabase() graph.connect() return graph
[docs] def fetch_digests(self, package_name: str, package_version: str) -> Dict[str, List[Dict[str, str]]]: """Fetch digests for the given package in specified version, consider only enabled indexes.""" _LOGGER.debug( "Querying graph database for digests for package %r in version %r", package_name, package_version, ) result = {} for index_url in self.graph.get_python_package_index_urls_all(enabled=True): query_result = self.graph.get_python_package_hashes_sha256( package_name, package_version, index_url, distinct=True ) result[index_url] = [{"sha256": digest} for digest in query_result] return result