Quelle files_changed.py Sprache: Python

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

"""
Support for optimizing tasks based on the set of files that have changed.
"""

import logging
import os
from subprocess import CalledProcessError

from mozbuild.util import memoize
from mozpack.path import join as join_path
from mozpack.path import match as mozpackmatch
from mozversioncontrol import InvalidRepoPath, get_repository_object

from gecko_taskgraph import GECKO
from gecko_taskgraph.util.hg import get_json_pushchangedfiles

logger = logging.getLogger(__name__)

@memoize
def get_changed_files(repository, revision):
    """
    Get the set of files changed in the push headed by the given revision.
    Responses are cached, so multiple calls with the same arguments are OK.
    """
    try:
        return get_json_pushchangedfiles(repository, revision)["files"]
    except KeyError:
        # We shouldn't hit this error in CI.
        if os.environ.get("MOZ_AUTOMATION"):
            raise

        # We're likely on an unpublished commit, grab changed files from
        # version control.
        return get_locally_changed_files(GECKO)

def check(params, file_patterns):
    """Determine whether any of the files changed in the indicated push to
    https://hg.mozilla.org match any of the given file patterns."""
    repository = params.get("head_repository")
    revision = params.get("head_rev")
    if not repository or not revision:
        logger.warning(
            "Missing `head_repository` or `head_rev` parameters; "
            "assuming all files have changed"
        )
        return True

    changed_files = get_changed_files(repository, revision)

    if "comm_head_repository" in params:
        repository = params.get("comm_head_repository")
        revision = params.get("comm_head_rev")
        if not revision:
            logger.warning(
                "Missing `comm_head_rev` parameters; " "assuming all files have changed"
            )
            return True

        changed_files |= {
            join_path("comm", file) for file in get_changed_files(repository, revision)
        }

    for pattern in file_patterns:
        for path in changed_files:
            if mozpackmatch(path, pattern):
                return True

    return False

@memoize
def get_locally_changed_files(repo):
    try:
        vcs = get_repository_object(repo)
        return set(vcs.get_outgoing_files("AM"))
    except (InvalidRepoPath, CalledProcessError):
        return set()

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