mirror of https://github.com/mongodb/mongo
92 lines
3.1 KiB
Python
92 lines
3.1 KiB
Python
"""Tools for detecting changes in a commit."""
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import os
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from itertools import chain
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from typing import Any, Dict, Iterable, Set, Optional
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import structlog
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from structlog.stdlib import LoggerFactory
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from git import DiffIndex, Repo
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structlog.configure(logger_factory=LoggerFactory())
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LOGGER = structlog.get_logger(__name__)
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def _paths_for_iter(diff, iter_type):
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"""
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Get the set for all the files in the given diff for the specified type.
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:param diff: git diff to query.
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:param iter_type: Iter type ['M', 'A', 'R', 'D'].
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:return: set of changed files.
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"""
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a_path_changes = {change.a_path for change in diff.iter_change_type(iter_type)}
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b_path_changes = {change.b_path for change in diff.iter_change_type(iter_type)}
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return a_path_changes.union(b_path_changes)
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def _modified_files_for_diff(diff: DiffIndex, log: Any) -> Set:
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"""
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Get the set of files modified in the given git diff.
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:param diff: Git diff information.
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:param log: Logger for logging.
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:return: Set of files that were modified in diff.
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"""
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modified_files = _paths_for_iter(diff, 'M')
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log.debug("modified files", files=modified_files)
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added_files = _paths_for_iter(diff, 'A')
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log.debug("added files", files=added_files)
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renamed_files = _paths_for_iter(diff, 'R')
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log.debug("renamed files", files=renamed_files)
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deleted_files = _paths_for_iter(diff, 'D')
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log.debug("deleted files", files=deleted_files)
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return modified_files.union(added_files).union(renamed_files).union(deleted_files)
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def find_changed_files(repo: Repo, revision_map: Optional[Dict[str, str]] = None) -> Set[str]:
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"""
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Find files that were new or added to the repository between commits.
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:param repo: Git repository.
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:param revision_map: Map of revisions to compare against for repos.
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:return: Set of changed files.
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"""
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LOGGER.info("Getting diff for repo", repo=repo.git_dir)
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if not revision_map:
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revision_map = {}
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diff = repo.index.diff(None)
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work_tree_files = _modified_files_for_diff(diff, LOGGER.bind(diff="working tree diff"))
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commit = repo.index
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diff = commit.diff(revision_map.get(repo.git_dir, repo.head.commit))
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index_files = _modified_files_for_diff(diff, LOGGER.bind(diff="index diff"))
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untracked_files = set(repo.untracked_files)
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LOGGER.info("untracked files", files=untracked_files, diff="untracked diff")
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paths = work_tree_files.union(index_files).union(untracked_files)
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return [
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os.path.relpath(f"{repo.working_dir}/{os.path.normpath(path)}", os.getcwd())
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for path in paths
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]
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def find_changed_files_in_repos(repos: Iterable[Repo],
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revision_map: Optional[Dict[str, str]] = None) -> Set[str]:
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"""
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Find the changed files.
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Use git to find which files have changed in this patch.
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:param repos: List of repos containing changed files.
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:param revision_map: Map of revisions to compare against for repos.
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:returns: Set of changed files.
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"""
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return set(chain.from_iterable([find_changed_files(repo, revision_map) for repo in repos]))
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