mirror of
https://gerrit.googlesource.com/git-repo
synced 2024-12-21 07:16:21 +00:00
1875ddd47c
Users may wind up with a lot of loose object content in projects they don't frequently make changes in, but that are modified by others. Since we bypass many git code paths that would have otherwise called out to `git gc --auto`, its possible for these projects to have their loose object database grow out of control. To help prevent that, we now invoke it ourselves during the network half of sync. Signed-off-by: Shawn O. Pearce <sop@google.com>
316 lines
9.9 KiB
Python
316 lines
9.9 KiB
Python
#
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# Copyright (C) 2008 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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from optparse import SUPPRESS_HELP
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import os
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import re
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import shutil
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import subprocess
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import sys
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import time
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from git_command import GIT
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from project import HEAD
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from project import Project
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from project import RemoteSpec
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from command import Command, MirrorSafeCommand
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from error import RepoChangedException, GitError
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from project import R_HEADS
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from project import SyncBuffer
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from progress import Progress
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class Sync(Command, MirrorSafeCommand):
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common = True
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helpSummary = "Update working tree to the latest revision"
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helpUsage = """
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%prog [<project>...]
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"""
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helpDescription = """
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The '%prog' command synchronizes local project directories
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with the remote repositories specified in the manifest. If a local
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project does not yet exist, it will clone a new local directory from
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the remote repository and set up tracking branches as specified in
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the manifest. If the local project already exists, '%prog'
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will update the remote branches and rebase any new local changes
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on top of the new remote changes.
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'%prog' will synchronize all projects listed at the command
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line. Projects can be specified either by name, or by a relative
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or absolute path to the project's local directory. If no projects
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are specified, '%prog' will synchronize all projects listed in
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the manifest.
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The -d/--detach option can be used to switch specified projects
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back to the manifest revision. This option is especially helpful
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if the project is currently on a topic branch, but the manifest
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revision is temporarily needed.
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SSH Connections
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---------------
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If at least one project remote URL uses an SSH connection (ssh://,
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git+ssh://, or user@host:path syntax) repo will automatically
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enable the SSH ControlMaster option when connecting to that host.
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This feature permits other projects in the same '%prog' session to
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reuse the same SSH tunnel, saving connection setup overheads.
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To disable this behavior on UNIX platforms, set the GIT_SSH
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environment variable to 'ssh'. For example:
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export GIT_SSH=ssh
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%prog
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Compatibility
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~~~~~~~~~~~~~
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This feature is automatically disabled on Windows, due to the lack
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of UNIX domain socket support.
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This feature is not compatible with url.insteadof rewrites in the
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user's ~/.gitconfig. '%prog' is currently not able to perform the
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rewrite early enough to establish the ControlMaster tunnel.
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If the remote SSH daemon is Gerrit Code Review, version 2.0.10 or
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later is required to fix a server side protocol bug.
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"""
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def _Options(self, p):
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p.add_option('-l','--local-only',
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dest='local_only', action='store_true',
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help="only update working tree, don't fetch")
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p.add_option('-n','--network-only',
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dest='network_only', action='store_true',
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help="fetch only, don't update working tree")
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p.add_option('-d','--detach',
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dest='detach_head', action='store_true',
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help='detach projects back to manifest revision')
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g = p.add_option_group('repo Version options')
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g.add_option('--no-repo-verify',
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dest='no_repo_verify', action='store_true',
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help='do not verify repo source code')
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g.add_option('--repo-upgraded',
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dest='repo_upgraded', action='store_true',
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help=SUPPRESS_HELP)
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def _Fetch(self, projects):
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fetched = set()
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pm = Progress('Fetching projects', len(projects))
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for project in projects:
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pm.update()
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if project.Sync_NetworkHalf():
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fetched.add(project.gitdir)
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else:
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print >>sys.stderr, 'error: Cannot fetch %s' % project.name
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sys.exit(1)
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pm.end()
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for project in projects:
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project.bare_git.gc('--auto')
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return fetched
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def UpdateProjectList(self):
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new_project_paths = []
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for project in self.manifest.projects.values():
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if project.relpath:
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new_project_paths.append(project.relpath)
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file_name = 'project.list'
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file_path = os.path.join(self.manifest.repodir, file_name)
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old_project_paths = []
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if os.path.exists(file_path):
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fd = open(file_path, 'r')
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try:
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old_project_paths = fd.read().split('\n')
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finally:
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fd.close()
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for path in old_project_paths:
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if not path:
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continue
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if path not in new_project_paths:
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project = Project(
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manifest = self.manifest,
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name = path,
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remote = RemoteSpec('origin'),
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gitdir = os.path.join(self.manifest.topdir,
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path, '.git'),
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worktree = os.path.join(self.manifest.topdir, path),
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relpath = path,
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revisionExpr = 'HEAD',
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revisionId = None)
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if project.IsDirty():
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print >>sys.stderr, 'error: Cannot remove project "%s": \
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uncommitted changes are present' % project.relpath
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print >>sys.stderr, ' commit changes, then run sync again'
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return -1
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else:
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print >>sys.stderr, 'Deleting obsolete path %s' % project.worktree
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shutil.rmtree(project.worktree)
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# Try deleting parent subdirs if they are empty
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dir = os.path.dirname(project.worktree)
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while dir != self.manifest.topdir:
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try:
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os.rmdir(dir)
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except OSError:
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break
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dir = os.path.dirname(dir)
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new_project_paths.sort()
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fd = open(file_path, 'w')
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try:
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fd.write('\n'.join(new_project_paths))
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fd.write('\n')
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finally:
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fd.close()
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return 0
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def Execute(self, opt, args):
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if opt.network_only and opt.detach_head:
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print >>sys.stderr, 'error: cannot combine -n and -d'
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sys.exit(1)
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if opt.network_only and opt.local_only:
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print >>sys.stderr, 'error: cannot combine -n and -l'
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sys.exit(1)
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rp = self.manifest.repoProject
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rp.PreSync()
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mp = self.manifest.manifestProject
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mp.PreSync()
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if opt.repo_upgraded:
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_PostRepoUpgrade(self.manifest)
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all = self.GetProjects(args, missing_ok=True)
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if not opt.local_only:
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to_fetch = []
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now = time.time()
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if (24 * 60 * 60) <= (now - rp.LastFetch):
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to_fetch.append(rp)
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to_fetch.append(mp)
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to_fetch.extend(all)
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fetched = self._Fetch(to_fetch)
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_PostRepoFetch(rp, opt.no_repo_verify)
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if opt.network_only:
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# bail out now; the rest touches the working tree
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return
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if mp.HasChanges:
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syncbuf = SyncBuffer(mp.config)
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mp.Sync_LocalHalf(syncbuf)
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if not syncbuf.Finish():
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sys.exit(1)
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self.GetManifest(reparse=True)
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all = self.GetProjects(args, missing_ok=True)
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missing = []
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for project in all:
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if project.gitdir not in fetched:
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missing.append(project)
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self._Fetch(missing)
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if self.manifest.IsMirror:
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# bail out now, we have no working tree
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return
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if self.UpdateProjectList():
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sys.exit(1)
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syncbuf = SyncBuffer(mp.config,
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detach_head = opt.detach_head)
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pm = Progress('Syncing work tree', len(all))
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for project in all:
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pm.update()
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if project.worktree:
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project.Sync_LocalHalf(syncbuf)
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pm.end()
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print >>sys.stderr
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if not syncbuf.Finish():
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sys.exit(1)
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def _PostRepoUpgrade(manifest):
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for project in manifest.projects.values():
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if project.Exists:
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project.PostRepoUpgrade()
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def _PostRepoFetch(rp, no_repo_verify=False, verbose=False):
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if rp.HasChanges:
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print >>sys.stderr, 'info: A new version of repo is available'
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print >>sys.stderr, ''
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if no_repo_verify or _VerifyTag(rp):
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syncbuf = SyncBuffer(rp.config)
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rp.Sync_LocalHalf(syncbuf)
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if not syncbuf.Finish():
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sys.exit(1)
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print >>sys.stderr, 'info: Restarting repo with latest version'
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raise RepoChangedException(['--repo-upgraded'])
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else:
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print >>sys.stderr, 'warning: Skipped upgrade to unverified version'
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else:
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if verbose:
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print >>sys.stderr, 'repo version %s is current' % rp.work_git.describe(HEAD)
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def _VerifyTag(project):
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gpg_dir = os.path.expanduser('~/.repoconfig/gnupg')
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if not os.path.exists(gpg_dir):
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print >>sys.stderr,\
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"""warning: GnuPG was not available during last "repo init"
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warning: Cannot automatically authenticate repo."""
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return True
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try:
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cur = project.bare_git.describe(project.GetRevisionId())
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except GitError:
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cur = None
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if not cur \
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or re.compile(r'^.*-[0-9]{1,}-g[0-9a-f]{1,}$').match(cur):
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rev = project.revisionExpr
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if rev.startswith(R_HEADS):
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rev = rev[len(R_HEADS):]
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print >>sys.stderr
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print >>sys.stderr,\
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"warning: project '%s' branch '%s' is not signed" \
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% (project.name, rev)
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return False
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env = dict(os.environ)
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env['GIT_DIR'] = project.gitdir
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env['GNUPGHOME'] = gpg_dir
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cmd = [GIT, 'tag', '-v', cur]
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proc = subprocess.Popen(cmd,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE,
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env = env)
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out = proc.stdout.read()
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proc.stdout.close()
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err = proc.stderr.read()
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proc.stderr.close()
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if proc.wait() != 0:
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print >>sys.stderr
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print >>sys.stderr, out
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print >>sys.stderr, err
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print >>sys.stderr
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return False
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return True
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