mirror of
https://gerrit.googlesource.com/git-repo
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ae824fb2fc
In Python 3, these exceptions were merged into OSError, so switch everything over to that. Change-Id: If876a28b692de5aa5c62a3bdc8c000793ce52c63 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/390376 Reviewed-by: Aravind Vasudevan <aravindvasudev@google.com> Commit-Queue: Mike Frysinger <vapier@google.com> Tested-by: Mike Frysinger <vapier@google.com>
559 lines
18 KiB
Python
559 lines
18 KiB
Python
# Copyright (C) 2021 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Provide functionality to get projects and their commit ids from Superproject.
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For more information on superproject, check out:
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https://en.wikibooks.org/wiki/Git/Submodules_and_Superprojects
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Examples:
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superproject = Superproject(manifest, name, remote, revision)
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UpdateProjectsResult = superproject.UpdateProjectsRevisionId(projects)
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"""
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import functools
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import hashlib
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import os
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import sys
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import time
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from typing import NamedTuple
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from git_command import git_require
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from git_command import GitCommand
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from git_config import RepoConfig
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from git_refs import GitRefs
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_SUPERPROJECT_GIT_NAME = "superproject.git"
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_SUPERPROJECT_MANIFEST_NAME = "superproject_override.xml"
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class SyncResult(NamedTuple):
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"""Return the status of sync and whether caller should exit."""
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# Whether the superproject sync was successful.
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success: bool
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# Whether the caller should exit.
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fatal: bool
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class CommitIdsResult(NamedTuple):
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"""Return the commit ids and whether caller should exit."""
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# A dictionary with the projects/commit ids on success, otherwise None.
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commit_ids: dict
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# Whether the caller should exit.
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fatal: bool
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class UpdateProjectsResult(NamedTuple):
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"""Return the overriding manifest file and whether caller should exit."""
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# Path name of the overriding manifest file if successful, otherwise None.
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manifest_path: str
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# Whether the caller should exit.
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fatal: bool
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class Superproject:
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"""Get commit ids from superproject.
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Initializes a local copy of a superproject for the manifest. This allows
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lookup of commit ids for all projects. It contains _project_commit_ids which
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is a dictionary with project/commit id entries.
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"""
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def __init__(
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self,
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manifest,
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name,
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remote,
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revision,
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superproject_dir="exp-superproject",
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):
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"""Initializes superproject.
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Args:
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manifest: A Manifest object that is to be written to a file.
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name: The unique name of the superproject
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remote: The RemoteSpec for the remote.
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revision: The name of the git branch to track.
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superproject_dir: Relative path under |manifest.subdir| to checkout
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superproject.
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"""
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self._project_commit_ids = None
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self._manifest = manifest
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self.name = name
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self.remote = remote
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self.revision = self._branch = revision
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self._repodir = manifest.repodir
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self._superproject_dir = superproject_dir
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self._superproject_path = manifest.SubmanifestInfoDir(
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manifest.path_prefix, superproject_dir
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)
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self._manifest_path = os.path.join(
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self._superproject_path, _SUPERPROJECT_MANIFEST_NAME
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)
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git_name = hashlib.md5(remote.name.encode("utf8")).hexdigest() + "-"
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self._remote_url = remote.url
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self._work_git_name = git_name + _SUPERPROJECT_GIT_NAME
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self._work_git = os.path.join(
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self._superproject_path, self._work_git_name
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)
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# The following are command arguemnts, rather than superproject
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# attributes, and were included here originally. They should eventually
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# become arguments that are passed down from the public methods, instead
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# of being treated as attributes.
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self._git_event_log = None
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self._quiet = False
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self._print_messages = False
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def SetQuiet(self, value):
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"""Set the _quiet attribute."""
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self._quiet = value
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def SetPrintMessages(self, value):
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"""Set the _print_messages attribute."""
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self._print_messages = value
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@property
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def project_commit_ids(self):
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"""Returns a dictionary of projects and their commit ids."""
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return self._project_commit_ids
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@property
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def manifest_path(self):
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"""Returns the manifest path if the path exists or None."""
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return (
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self._manifest_path if os.path.exists(self._manifest_path) else None
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)
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def _LogMessage(self, fmt, *inputs):
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"""Logs message to stderr and _git_event_log."""
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message = f"{self._LogMessagePrefix()} {fmt.format(*inputs)}"
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if self._print_messages:
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print(message, file=sys.stderr)
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self._git_event_log.ErrorEvent(message, fmt)
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def _LogMessagePrefix(self):
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"""Returns the prefix string to be logged in each log message"""
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return (
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f"repo superproject branch: {self._branch} url: {self._remote_url}"
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)
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def _LogError(self, fmt, *inputs):
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"""Logs error message to stderr and _git_event_log."""
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self._LogMessage(f"error: {fmt}", *inputs)
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def _LogWarning(self, fmt, *inputs):
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"""Logs warning message to stderr and _git_event_log."""
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self._LogMessage(f"warning: {fmt}", *inputs)
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def _Init(self):
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"""Sets up a local Git repository to get a copy of a superproject.
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Returns:
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True if initialization is successful, or False.
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"""
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if not os.path.exists(self._superproject_path):
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os.mkdir(self._superproject_path)
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if not self._quiet and not os.path.exists(self._work_git):
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print(
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"%s: Performing initial setup for superproject; this might "
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"take several minutes." % self._work_git
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)
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cmd = ["init", "--bare", self._work_git_name]
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p = GitCommand(
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None,
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cmd,
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cwd=self._superproject_path,
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capture_stdout=True,
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capture_stderr=True,
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)
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retval = p.Wait()
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if retval:
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self._LogWarning(
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"git init call failed, command: git {}, "
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"return code: {}, stderr: {}",
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cmd,
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retval,
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p.stderr,
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)
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return False
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return True
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def _Fetch(self):
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"""Fetches a superproject for the manifest based on |_remote_url|.
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This runs git fetch which stores a local copy the superproject.
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Returns:
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True if fetch is successful, or False.
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"""
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if not os.path.exists(self._work_git):
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self._LogWarning("git fetch missing directory: {}", self._work_git)
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return False
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if not git_require((2, 28, 0)):
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self._LogWarning(
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"superproject requires a git version 2.28 or later"
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)
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return False
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cmd = [
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"fetch",
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self._remote_url,
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"--depth",
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"1",
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"--force",
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"--no-tags",
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"--filter",
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"blob:none",
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]
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# Check if there is a local ref that we can pass to --negotiation-tip.
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# If this is the first fetch, it does not exist yet.
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# We use --negotiation-tip to speed up the fetch. Superproject branches
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# do not share commits. So this lets git know it only needs to send
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# commits reachable from the specified local refs.
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rev_commit = GitRefs(self._work_git).get(f"refs/heads/{self.revision}")
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if rev_commit:
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cmd.extend(["--negotiation-tip", rev_commit])
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if self._branch:
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cmd += [self._branch + ":" + self._branch]
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p = GitCommand(
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None,
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cmd,
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cwd=self._work_git,
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capture_stdout=True,
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capture_stderr=True,
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)
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retval = p.Wait()
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if retval:
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self._LogWarning(
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"git fetch call failed, command: git {}, "
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"return code: {}, stderr: {}",
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cmd,
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retval,
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p.stderr,
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)
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return False
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return True
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def _LsTree(self):
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"""Gets the commit ids for all projects.
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Works only in git repositories.
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Returns:
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data: data returned from 'git ls-tree ...' instead of None.
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"""
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if not os.path.exists(self._work_git):
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self._LogWarning(
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"git ls-tree missing directory: {}", self._work_git
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)
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return None
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data = None
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branch = "HEAD" if not self._branch else self._branch
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cmd = ["ls-tree", "-z", "-r", branch]
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p = GitCommand(
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None,
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cmd,
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cwd=self._work_git,
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capture_stdout=True,
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capture_stderr=True,
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)
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retval = p.Wait()
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if retval == 0:
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data = p.stdout
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else:
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self._LogWarning(
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"git ls-tree call failed, command: git {}, "
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"return code: {}, stderr: {}",
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cmd,
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retval,
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p.stderr,
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)
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return data
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def Sync(self, git_event_log):
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"""Gets a local copy of a superproject for the manifest.
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Args:
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git_event_log: an EventLog, for git tracing.
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Returns:
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SyncResult
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"""
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self._git_event_log = git_event_log
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if not self._manifest.superproject:
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self._LogWarning(
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"superproject tag is not defined in manifest: {}",
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self._manifest.manifestFile,
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)
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return SyncResult(False, False)
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_PrintBetaNotice()
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should_exit = True
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if not self._remote_url:
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self._LogWarning(
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"superproject URL is not defined in manifest: {}",
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self._manifest.manifestFile,
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)
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return SyncResult(False, should_exit)
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if not self._Init():
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return SyncResult(False, should_exit)
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if not self._Fetch():
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return SyncResult(False, should_exit)
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if not self._quiet:
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print(
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"%s: Initial setup for superproject completed." % self._work_git
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)
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return SyncResult(True, False)
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def _GetAllProjectsCommitIds(self):
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"""Get commit ids for all projects from superproject and save them.
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Commit ids are saved in _project_commit_ids.
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Returns:
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CommitIdsResult
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"""
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sync_result = self.Sync(self._git_event_log)
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if not sync_result.success:
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return CommitIdsResult(None, sync_result.fatal)
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data = self._LsTree()
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if not data:
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self._LogWarning(
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"git ls-tree failed to return data for manifest: {}",
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self._manifest.manifestFile,
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)
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return CommitIdsResult(None, True)
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# Parse lines like the following to select lines starting with '160000'
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# and build a dictionary with project path (last element) and its commit
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# id (3rd element).
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#
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# 160000 commit 2c2724cb36cd5a9cec6c852c681efc3b7c6b86ea\tart\x00
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# 120000 blob acc2cbdf438f9d2141f0ae424cec1d8fc4b5d97f\tbootstrap.bash\x00 # noqa: E501
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commit_ids = {}
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for line in data.split("\x00"):
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ls_data = line.split(None, 3)
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if not ls_data:
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break
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if ls_data[0] == "160000":
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commit_ids[ls_data[3]] = ls_data[2]
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self._project_commit_ids = commit_ids
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return CommitIdsResult(commit_ids, False)
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def _WriteManifestFile(self):
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"""Writes manifest to a file.
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Returns:
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manifest_path: Path name of the file into which manifest is written
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instead of None.
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"""
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if not os.path.exists(self._superproject_path):
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self._LogWarning(
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"missing superproject directory: {}", self._superproject_path
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)
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return None
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manifest_str = self._manifest.ToXml(
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groups=self._manifest.GetGroupsStr(), omit_local=True
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).toxml()
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manifest_path = self._manifest_path
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try:
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with open(manifest_path, "w", encoding="utf-8") as fp:
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fp.write(manifest_str)
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except OSError as e:
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self._LogError("cannot write manifest to : {} {}", manifest_path, e)
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return None
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return manifest_path
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def _SkipUpdatingProjectRevisionId(self, project):
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"""Checks if a project's revision id needs to be updated or not.
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Revision id for projects from local manifest will not be updated.
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Args:
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project: project whose revision id is being updated.
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Returns:
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True if a project's revision id should not be updated, or False,
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"""
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path = project.relpath
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if not path:
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return True
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# Skip the project with revisionId.
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if project.revisionId:
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return True
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# Skip the project if it comes from the local manifest.
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return project.manifest.IsFromLocalManifest(project)
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def UpdateProjectsRevisionId(self, projects, git_event_log):
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"""Update revisionId of every project in projects with the commit id.
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Args:
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projects: a list of projects whose revisionId needs to be updated.
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git_event_log: an EventLog, for git tracing.
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Returns:
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UpdateProjectsResult
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"""
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self._git_event_log = git_event_log
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commit_ids_result = self._GetAllProjectsCommitIds()
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commit_ids = commit_ids_result.commit_ids
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if not commit_ids:
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return UpdateProjectsResult(None, commit_ids_result.fatal)
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projects_missing_commit_ids = []
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for project in projects:
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if self._SkipUpdatingProjectRevisionId(project):
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continue
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path = project.relpath
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commit_id = commit_ids.get(path)
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if not commit_id:
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projects_missing_commit_ids.append(path)
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# If superproject doesn't have a commit id for a project, then report an
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# error event and continue as if do not use superproject is specified.
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if projects_missing_commit_ids:
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self._LogWarning(
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"please file a bug using {} to report missing "
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"commit_ids for: {}",
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self._manifest.contactinfo.bugurl,
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projects_missing_commit_ids,
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)
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return UpdateProjectsResult(None, False)
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for project in projects:
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if not self._SkipUpdatingProjectRevisionId(project):
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project.SetRevisionId(commit_ids.get(project.relpath))
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manifest_path = self._WriteManifestFile()
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return UpdateProjectsResult(manifest_path, False)
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@functools.lru_cache(maxsize=10)
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def _PrintBetaNotice():
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"""Print the notice of beta status."""
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print(
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"NOTICE: --use-superproject is in beta; report any issues to the "
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"address described in `repo version`",
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file=sys.stderr,
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)
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@functools.lru_cache(maxsize=None)
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def _UseSuperprojectFromConfiguration():
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"""Returns the user choice of whether to use superproject."""
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user_cfg = RepoConfig.ForUser()
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time_now = int(time.time())
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user_value = user_cfg.GetBoolean("repo.superprojectChoice")
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if user_value is not None:
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user_expiration = user_cfg.GetInt("repo.superprojectChoiceExpire")
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if (
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user_expiration is None
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or user_expiration <= 0
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or user_expiration >= time_now
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):
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# TODO(b/190688390) - Remove prompt when we are comfortable with the
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# new default value.
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if user_value:
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print(
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(
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"You are currently enrolled in Git submodules "
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"experiment (go/android-submodules-quickstart). Use "
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"--no-use-superproject to override.\n"
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),
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file=sys.stderr,
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)
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else:
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print(
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(
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"You are not currently enrolled in Git submodules "
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"experiment (go/android-submodules-quickstart). Use "
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"--use-superproject to override.\n"
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),
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file=sys.stderr,
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)
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return user_value
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# We don't have an unexpired choice, ask for one.
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system_cfg = RepoConfig.ForSystem()
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system_value = system_cfg.GetBoolean("repo.superprojectChoice")
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if system_value:
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# The system configuration is proposing that we should enable the
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# use of superproject. Treat the user as enrolled for two weeks.
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#
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# TODO(b/190688390) - Remove prompt when we are comfortable with the new
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# default value.
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userchoice = True
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time_choiceexpire = time_now + (86400 * 14)
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user_cfg.SetString(
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"repo.superprojectChoiceExpire", str(time_choiceexpire)
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)
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user_cfg.SetBoolean("repo.superprojectChoice", userchoice)
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print(
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"You are automatically enrolled in Git submodules experiment "
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"(go/android-submodules-quickstart) for another two weeks.\n",
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file=sys.stderr,
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)
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return True
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# For all other cases, we would not use superproject by default.
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return False
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def PrintMessages(use_superproject, manifest):
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"""Returns a boolean if error/warning messages are to be printed.
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Args:
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use_superproject: option value from optparse.
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manifest: manifest to use.
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"""
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return use_superproject is not None or bool(manifest.superproject)
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|
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def UseSuperproject(use_superproject, manifest):
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"""Returns a boolean if use-superproject option is enabled.
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Args:
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use_superproject: option value from optparse.
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manifest: manifest to use.
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|
|
|
Returns:
|
|
Whether the superproject should be used.
|
|
"""
|
|
|
|
if not manifest.superproject:
|
|
# This (sub) manifest does not have a superproject definition.
|
|
return False
|
|
elif use_superproject is not None:
|
|
return use_superproject
|
|
else:
|
|
client_value = manifest.manifestProject.use_superproject
|
|
if client_value is not None:
|
|
return client_value
|
|
elif manifest.superproject:
|
|
return _UseSuperprojectFromConfiguration()
|
|
else:
|
|
return False
|