mirror of
https://gerrit.googlesource.com/git-repo
synced 2024-12-21 07:16:21 +00:00
69998b0c6f
We need a representation of git-submodule in repo; otherwise repo will not sync submodules, and leave workspace in a broken state. Of course this will not be a problem if all projects are owned by the owner of the manifest file, who may simply choose not to use git-submodule in all projects. However, this is not possible in practice because manifest file owner is unlikely to own all upstream projects. As git submodules are simply git repositories, it is natural to treat them as plain repo projects that live inside a repo project. That is, we could use recursively declared projects to denote the is-submodule relation of git repositories. The behavior of repo remains the same to projects that do not have a sub-project within. As for parent projects, repo fetches them and their sub-projects as normal projects, and then checks out subprojects at the commit specified in parent's commit object. The sub-project is fetched at a path relative to parent project's working directory; so the path specified in manifest file should match that of .gitmodules file. If a submodule is not registered in repo manifest, repo will derive its properties from itself and its parent project, which might not always be correct. In such cases, the subproject is called a derived subproject. To a user, a sub-project is merely a git-submodule; so all tips of working with a git-submodule apply here, too. For example, you should not run `repo sync` in a parent repository if its submodule is dirty. Change-Id: I541e9e2ac1a70304272dbe09724572aa1004eb5c
624 lines
22 KiB
Python
624 lines
22 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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import netrc
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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 socket
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import subprocess
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import sys
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import time
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import urlparse
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import xmlrpclib
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try:
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import threading as _threading
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except ImportError:
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import dummy_threading as _threading
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try:
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import resource
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def _rlimit_nofile():
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return resource.getrlimit(resource.RLIMIT_NOFILE)
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except ImportError:
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def _rlimit_nofile():
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return (256, 256)
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from git_command import GIT
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from git_refs import R_HEADS, 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 SyncBuffer
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from progress import Progress
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class _FetchError(Exception):
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"""Internal error thrown in _FetchHelper() when we don't want stack trace."""
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pass
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class Sync(Command, MirrorSafeCommand):
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jobs = 1
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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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The -s/--smart-sync option can be used to sync to a known good
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build as specified by the manifest-server element in the current
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manifest. The -t/--smart-tag option is similar and allows you to
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specify a custom tag/label.
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The -u/--manifest-server-username and -p/--manifest-server-password
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options can be used to specify a username and password to authenticate
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with the manifest server when using the -s or -t option.
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If -u and -p are not specified when using the -s or -t option, '%prog'
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will attempt to read authentication credentials for the manifest server
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from the user's .netrc file.
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'%prog' will not use authentication credentials from -u/-p or .netrc
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if the manifest server specified in the manifest file already includes
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credentials.
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The -f/--force-broken option can be used to proceed with syncing
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other projects if a project sync fails.
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The --no-clone-bundle option disables any attempt to use
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$URL/clone.bundle to bootstrap a new Git repository from a
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resumeable bundle file on a content delivery network. This
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may be necessary if there are problems with the local Python
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HTTP client or proxy configuration, but the Git binary works.
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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, show_smart=True):
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self.jobs = self.manifest.default.sync_j
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p.add_option('-f', '--force-broken',
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dest='force_broken', action='store_true',
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help="continue sync even if a project fails to sync")
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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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p.add_option('-c','--current-branch',
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dest='current_branch_only', action='store_true',
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help='fetch only current branch from server')
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p.add_option('-q','--quiet',
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dest='quiet', action='store_true',
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help='be more quiet')
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p.add_option('-j','--jobs',
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dest='jobs', action='store', type='int',
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help="projects to fetch simultaneously (default %d)" % self.jobs)
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p.add_option('-m', '--manifest-name',
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dest='manifest_name',
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help='temporary manifest to use for this sync', metavar='NAME.xml')
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p.add_option('--no-clone-bundle',
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dest='no_clone_bundle', action='store_true',
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help='disable use of /clone.bundle on HTTP/HTTPS')
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if show_smart:
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p.add_option('-s', '--smart-sync',
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dest='smart_sync', action='store_true',
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help='smart sync using manifest from a known good build')
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p.add_option('-t', '--smart-tag',
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dest='smart_tag', action='store',
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help='smart sync using manifest from a known tag')
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p.add_option('-u', '--manifest-server-username', action='store',
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dest='manifest_server_username',
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help='username to authenticate with the manifest server')
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p.add_option('-p', '--manifest-server-password', action='store',
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dest='manifest_server_password',
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help='password to authenticate with the manifest server')
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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 _FetchHelper(self, opt, project, lock, fetched, pm, sem, err_event):
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"""Main function of the fetch threads when jobs are > 1.
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Args:
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opt: Program options returned from optparse. See _Options().
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project: Project object for the project to fetch.
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lock: Lock for accessing objects that are shared amongst multiple
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_FetchHelper() threads.
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fetched: set object that we will add project.gitdir to when we're done
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(with our lock held).
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pm: Instance of a Project object. We will call pm.update() (with our
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lock held).
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sem: We'll release() this semaphore when we exit so that another thread
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can be started up.
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err_event: We'll set this event in the case of an error (after printing
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out info about the error).
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"""
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# We'll set to true once we've locked the lock.
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did_lock = False
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# Encapsulate everything in a try/except/finally so that:
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# - We always set err_event in the case of an exception.
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# - We always make sure we call sem.release().
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# - We always make sure we unlock the lock if we locked it.
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try:
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try:
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success = project.Sync_NetworkHalf(
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quiet=opt.quiet,
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current_branch_only=opt.current_branch_only,
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clone_bundle=not opt.no_clone_bundle)
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# Lock around all the rest of the code, since printing, updating a set
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# and Progress.update() are not thread safe.
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lock.acquire()
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did_lock = True
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if not success:
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print >>sys.stderr, 'error: Cannot fetch %s' % project.name
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if opt.force_broken:
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print >>sys.stderr, 'warn: --force-broken, continuing to sync'
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else:
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raise _FetchError()
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fetched.add(project.gitdir)
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pm.update()
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except _FetchError:
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err_event.set()
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except:
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err_event.set()
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raise
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finally:
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if did_lock:
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lock.release()
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sem.release()
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def _Fetch(self, projects, opt):
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fetched = set()
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pm = Progress('Fetching projects', len(projects))
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if self.jobs == 1:
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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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quiet=opt.quiet,
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current_branch_only=opt.current_branch_only,
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clone_bundle=not opt.no_clone_bundle):
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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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if opt.force_broken:
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print >>sys.stderr, 'warn: --force-broken, continuing to sync'
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else:
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sys.exit(1)
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else:
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threads = set()
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lock = _threading.Lock()
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sem = _threading.Semaphore(self.jobs)
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err_event = _threading.Event()
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for project in projects:
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# Check for any errors before starting any new threads.
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# ...we'll let existing threads finish, though.
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if err_event.isSet():
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break
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sem.acquire()
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t = _threading.Thread(target = self._FetchHelper,
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args = (opt,
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project,
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lock,
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fetched,
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pm,
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sem,
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err_event))
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# Ensure that Ctrl-C will not freeze the repo process.
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t.daemon = True
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threads.add(t)
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t.start()
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for t in threads:
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t.join()
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# If we saw an error, exit with code 1 so that other scripts can check.
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if err_event.isSet():
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print >>sys.stderr, '\nerror: Exited sync due to fetch errors'
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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.GetProjects(None, missing_ok=True):
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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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# If the path has already been deleted, we don't need to do it
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if os.path.exists(self.manifest.topdir + '/' + path):
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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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groups = 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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project_dir = os.path.dirname(project.worktree)
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while project_dir != self.manifest.topdir:
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try:
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os.rmdir(project_dir)
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except OSError:
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break
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project_dir = os.path.dirname(project_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.jobs:
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self.jobs = opt.jobs
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if self.jobs > 1:
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soft_limit, _ = _rlimit_nofile()
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self.jobs = min(self.jobs, (soft_limit - 5) / 3)
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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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if opt.manifest_name and opt.smart_sync:
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print >>sys.stderr, 'error: cannot combine -m and -s'
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sys.exit(1)
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if opt.manifest_name and opt.smart_tag:
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print >>sys.stderr, 'error: cannot combine -m and -t'
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sys.exit(1)
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if opt.manifest_server_username or opt.manifest_server_password:
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if not (opt.smart_sync or opt.smart_tag):
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print >>sys.stderr, 'error: -u and -p may only be combined with ' \
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'-s or -t'
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sys.exit(1)
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if None in [opt.manifest_server_username, opt.manifest_server_password]:
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print >>sys.stderr, 'error: both -u and -p must be given'
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sys.exit(1)
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if opt.manifest_name:
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self.manifest.Override(opt.manifest_name)
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if opt.smart_sync or opt.smart_tag:
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if not self.manifest.manifest_server:
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print >>sys.stderr, \
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'error: cannot smart sync: no manifest server defined in manifest'
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sys.exit(1)
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manifest_server = self.manifest.manifest_server
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if not '@' in manifest_server:
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username = None
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password = None
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if opt.manifest_server_username and opt.manifest_server_password:
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username = opt.manifest_server_username
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password = opt.manifest_server_password
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else:
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try:
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info = netrc.netrc()
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except IOError:
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print >>sys.stderr, '.netrc file does not exist or could not be opened'
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else:
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try:
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parse_result = urlparse.urlparse(manifest_server)
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if parse_result.hostname:
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username, _account, password = \
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info.authenticators(parse_result.hostname)
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except TypeError:
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# TypeError is raised when the given hostname is not present
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# in the .netrc file.
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print >>sys.stderr, 'No credentials found for %s in .netrc' % \
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parse_result.hostname
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except netrc.NetrcParseError, e:
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print >>sys.stderr, 'Error parsing .netrc file: %s' % e
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if (username and password):
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manifest_server = manifest_server.replace('://', '://%s:%s@' %
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(username, password),
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1)
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try:
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server = xmlrpclib.Server(manifest_server)
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if opt.smart_sync:
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p = self.manifest.manifestProject
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b = p.GetBranch(p.CurrentBranch)
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branch = b.merge
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if branch.startswith(R_HEADS):
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branch = branch[len(R_HEADS):]
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env = os.environ.copy()
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if (env.has_key('TARGET_PRODUCT') and
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env.has_key('TARGET_BUILD_VARIANT')):
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target = '%s-%s' % (env['TARGET_PRODUCT'],
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env['TARGET_BUILD_VARIANT'])
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[success, manifest_str] = server.GetApprovedManifest(branch, target)
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else:
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[success, manifest_str] = server.GetApprovedManifest(branch)
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else:
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assert(opt.smart_tag)
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[success, manifest_str] = server.GetManifest(opt.smart_tag)
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if success:
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manifest_name = "smart_sync_override.xml"
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manifest_path = os.path.join(self.manifest.manifestProject.worktree,
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manifest_name)
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try:
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f = open(manifest_path, 'w')
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try:
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f.write(manifest_str)
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finally:
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f.close()
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except IOError:
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print >>sys.stderr, 'error: cannot write manifest to %s' % \
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manifest_path
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sys.exit(1)
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self.manifest.Override(manifest_name)
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else:
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print >>sys.stderr, 'error: %s' % manifest_str
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sys.exit(1)
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except (socket.error, IOError, xmlrpclib.Fault), e:
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print >>sys.stderr, 'error: cannot connect to manifest server %s:\n%s' % (
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self.manifest.manifest_server, e)
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sys.exit(1)
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except xmlrpclib.ProtocolError, e:
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print >>sys.stderr, 'error: cannot connect to manifest server %s:\n%d %s' % (
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self.manifest.manifest_server, e.errcode, e.errmsg)
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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:
|
|
_PostRepoUpgrade(self.manifest)
|
|
|
|
if not opt.local_only:
|
|
mp.Sync_NetworkHalf(quiet=opt.quiet,
|
|
current_branch_only=opt.current_branch_only)
|
|
|
|
if mp.HasChanges:
|
|
syncbuf = SyncBuffer(mp.config)
|
|
mp.Sync_LocalHalf(syncbuf)
|
|
if not syncbuf.Finish():
|
|
sys.exit(1)
|
|
self.manifest._Unload()
|
|
if opt.jobs is None:
|
|
self.jobs = self.manifest.default.sync_j
|
|
all_projects = self.GetProjects(args, missing_ok=True)
|
|
|
|
if not opt.local_only:
|
|
to_fetch = []
|
|
now = time.time()
|
|
if (24 * 60 * 60) <= (now - rp.LastFetch):
|
|
to_fetch.append(rp)
|
|
to_fetch.extend(all_projects)
|
|
|
|
fetched = self._Fetch(to_fetch, opt)
|
|
_PostRepoFetch(rp, opt.no_repo_verify)
|
|
if opt.network_only:
|
|
# bail out now; the rest touches the working tree
|
|
return
|
|
|
|
# Iteratively fetch missing and/or nested unregistered submodules
|
|
previously_missing_set = set()
|
|
while True:
|
|
self.manifest._Unload()
|
|
all = self.GetProjects(args, missing_ok=True)
|
|
missing = []
|
|
for project in all:
|
|
if project.gitdir not in fetched:
|
|
missing.append(project)
|
|
if not missing:
|
|
break
|
|
# Stop us from non-stopped fetching actually-missing repos: If set of
|
|
# missing repos has not been changed from last fetch, we break.
|
|
missing_set = set(p.name for p in missing)
|
|
if previously_missing_set == missing_set:
|
|
break
|
|
previously_missing_set = missing_set
|
|
fetched.update(self._Fetch(missing, opt))
|
|
|
|
if self.manifest.IsMirror:
|
|
# bail out now, we have no working tree
|
|
return
|
|
|
|
if self.UpdateProjectList():
|
|
sys.exit(1)
|
|
|
|
syncbuf = SyncBuffer(mp.config,
|
|
detach_head = opt.detach_head)
|
|
pm = Progress('Syncing work tree', len(all_projects))
|
|
for project in all_projects:
|
|
pm.update()
|
|
if project.worktree:
|
|
project.Sync_LocalHalf(syncbuf)
|
|
pm.end()
|
|
print >>sys.stderr
|
|
if not syncbuf.Finish():
|
|
sys.exit(1)
|
|
|
|
# If there's a notice that's supposed to print at the end of the sync, print
|
|
# it now...
|
|
if self.manifest.notice:
|
|
print self.manifest.notice
|
|
|
|
def _PostRepoUpgrade(manifest):
|
|
for project in manifest.projects.values():
|
|
if project.Exists:
|
|
project.PostRepoUpgrade()
|
|
|
|
def _PostRepoFetch(rp, no_repo_verify=False, verbose=False):
|
|
if rp.HasChanges:
|
|
print >>sys.stderr, 'info: A new version of repo is available'
|
|
print >>sys.stderr, ''
|
|
if no_repo_verify or _VerifyTag(rp):
|
|
syncbuf = SyncBuffer(rp.config)
|
|
rp.Sync_LocalHalf(syncbuf)
|
|
if not syncbuf.Finish():
|
|
sys.exit(1)
|
|
print >>sys.stderr, 'info: Restarting repo with latest version'
|
|
raise RepoChangedException(['--repo-upgraded'])
|
|
else:
|
|
print >>sys.stderr, 'warning: Skipped upgrade to unverified version'
|
|
else:
|
|
if verbose:
|
|
print >>sys.stderr, 'repo version %s is current' % rp.work_git.describe(HEAD)
|
|
|
|
def _VerifyTag(project):
|
|
gpg_dir = os.path.expanduser('~/.repoconfig/gnupg')
|
|
if not os.path.exists(gpg_dir):
|
|
print >>sys.stderr,\
|
|
"""warning: GnuPG was not available during last "repo init"
|
|
warning: Cannot automatically authenticate repo."""
|
|
return True
|
|
|
|
try:
|
|
cur = project.bare_git.describe(project.GetRevisionId())
|
|
except GitError:
|
|
cur = None
|
|
|
|
if not cur \
|
|
or re.compile(r'^.*-[0-9]{1,}-g[0-9a-f]{1,}$').match(cur):
|
|
rev = project.revisionExpr
|
|
if rev.startswith(R_HEADS):
|
|
rev = rev[len(R_HEADS):]
|
|
|
|
print >>sys.stderr
|
|
print >>sys.stderr,\
|
|
"warning: project '%s' branch '%s' is not signed" \
|
|
% (project.name, rev)
|
|
return False
|
|
|
|
env = os.environ.copy()
|
|
env['GIT_DIR'] = project.gitdir.encode()
|
|
env['GNUPGHOME'] = gpg_dir.encode()
|
|
|
|
cmd = [GIT, 'tag', '-v', cur]
|
|
proc = subprocess.Popen(cmd,
|
|
stdout = subprocess.PIPE,
|
|
stderr = subprocess.PIPE,
|
|
env = env)
|
|
out = proc.stdout.read()
|
|
proc.stdout.close()
|
|
|
|
err = proc.stderr.read()
|
|
proc.stderr.close()
|
|
|
|
if proc.wait() != 0:
|
|
print >>sys.stderr
|
|
print >>sys.stderr, out
|
|
print >>sys.stderr, err
|
|
print >>sys.stderr
|
|
return False
|
|
return True
|