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@ -6,12 +6,40 @@
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import typing as t
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from collections import defaultdict
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from logging import getLogger
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try:
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from resolvelib import BaseReporter
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except ImportError:
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class BaseReporter: # type: ignore[no-redef]
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pass
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from .dataclasses import Candidate
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_CLI_APP_NAME = 'ansible-galaxy'
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_MESSAGES_AT_REJECT_COUNT = {
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1: (
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f'{_CLI_APP_NAME} is looking at multiple versions of {{fqcn}} to '
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'determine which version is compatible with other '
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'requirements. This could take a while.'
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),
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8: (
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f'{_CLI_APP_NAME} is looking at multiple versions of {{fqcn}} to '
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'determine which version is compatible with other '
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'requirements. This could take a while.'
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),
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13: (
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'This is taking longer than usual. You might need to provide '
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'the dependency resolver with stricter constraints to reduce '
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'runtime. If you want to abort this run, press Ctrl + C.'
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),
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}
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_logger = getLogger(__name__)
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class CollectionDependencyReporter(BaseReporter):
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"""A dependency reporter for Ansible Collections.
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@ -19,3 +47,39 @@ class CollectionDependencyReporter(BaseReporter):
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This is a proxy class allowing us to abstract away importing resolvelib
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outside of the `ansible.galaxy.dependency_resolution` Python package.
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"""
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def __init__(self) -> None:
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super().__init__()
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self.reject_count_by_fqcn: t.DefaultDict[str, int] = defaultdict(int)
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def rejecting_candidate(
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self,
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criterion: t.Any,
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candidate: Candidate,
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) -> None:
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# Inspired by https://github.com/pypa/pip/commit/9731131
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self.reject_count_by_fqcn[candidate.fqcn] += 1
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collection_rejections_count = self.reject_count_by_fqcn[candidate.fqcn]
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try:
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collection_rejection_message = _MESSAGES_AT_REJECT_COUNT[
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collection_rejections_count
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]
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except KeyError:
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return
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_logger.info(collection_rejection_message.format(fqcn=candidate.fqcn))
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msg = 'Will try a different candidate, due to conflict:'
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for req_info in criterion.information:
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req, parent = req_info.requirement, req_info.parent
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msg += '\n '
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if parent:
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msg += f'{parent !r} depends on '
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else:
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msg += 'The user requested '
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msg += repr(req)
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_logger.debug(msg)
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backtracking = rejecting_candidate
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