mirror of
https://gerrit.googlesource.com/git-repo
synced 2024-12-23 07:16:21 +00:00
380 lines
11 KiB
Python
380 lines
11 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 __future__ import print_function
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import errno
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import fcntl
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import multiprocessing
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import re
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import os
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import select
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import signal
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import sys
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import subprocess
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from color import Coloring
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from command import Command, MirrorSafeCommand
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_CAN_COLOR = [
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'branch',
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'diff',
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'grep',
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'log',
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]
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class ForallColoring(Coloring):
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def __init__(self, config):
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Coloring.__init__(self, config, 'forall')
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self.project = self.printer('project', attr='bold')
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class Forall(Command, MirrorSafeCommand):
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common = False
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helpSummary = "Run a shell command in each project"
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helpUsage = """
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%prog [<project>...] -c <command> [<arg>...]
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%prog -r str1 [str2] ... -c <command> [<arg>...]"
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"""
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helpDescription = """
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Executes the same shell command in each project.
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The -r option allows running the command only on projects matching
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regex or wildcard expression.
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Output Formatting
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-----------------
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The -p option causes '%prog' to bind pipes to the command's stdin,
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stdout and stderr streams, and pipe all output into a continuous
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stream that is displayed in a single pager session. Project headings
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are inserted before the output of each command is displayed. If the
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command produces no output in a project, no heading is displayed.
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The formatting convention used by -p is very suitable for some
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types of searching, e.g. `repo forall -p -c git log -SFoo` will
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print all commits that add or remove references to Foo.
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The -v option causes '%prog' to display stderr messages if a
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command produces output only on stderr. Normally the -p option
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causes command output to be suppressed until the command produces
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at least one byte of output on stdout.
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Environment
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-----------
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pwd is the project's working directory. If the current client is
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a mirror client, then pwd is the Git repository.
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REPO_PROJECT is set to the unique name of the project.
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REPO_PATH is the path relative the the root of the client.
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REPO_REMOTE is the name of the remote system from the manifest.
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REPO_LREV is the name of the revision from the manifest, translated
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to a local tracking branch. If you need to pass the manifest
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revision to a locally executed git command, use REPO_LREV.
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REPO_RREV is the name of the revision from the manifest, exactly
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as written in the manifest.
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REPO_COUNT is the total number of projects being iterated.
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REPO_I is the current (1-based) iteration count. Can be used in
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conjunction with REPO_COUNT to add a simple progress indicator to your
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command.
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REPO__* are any extra environment variables, specified by the
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"annotation" element under any project element. This can be useful
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for differentiating trees based on user-specific criteria, or simply
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annotating tree details.
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shell positional arguments ($1, $2, .., $#) are set to any arguments
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following <command>.
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Unless -p is used, stdin, stdout, stderr are inherited from the
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terminal and are not redirected.
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If -e is used, when a command exits unsuccessfully, '%prog' will abort
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without iterating through the remaining projects.
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"""
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def _Options(self, p):
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def cmd(option, opt_str, value, parser):
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setattr(parser.values, option.dest, list(parser.rargs))
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while parser.rargs:
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del parser.rargs[0]
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p.add_option('-r', '--regex',
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dest='regex', action='store_true',
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help="Execute the command only on projects matching regex or wildcard expression")
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p.add_option('-c', '--command',
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help='Command (and arguments) to execute',
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dest='command',
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action='callback',
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callback=cmd)
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p.add_option('-e', '--abort-on-errors',
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dest='abort_on_errors', action='store_true',
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help='Abort if a command exits unsuccessfully')
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g = p.add_option_group('Output')
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g.add_option('-p',
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dest='project_header', action='store_true',
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help='Show project headers before output')
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g.add_option('-v', '--verbose',
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dest='verbose', action='store_true',
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help='Show command error messages')
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g.add_option('-j', '--jobs',
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dest='jobs', action='store', type='int', default=1,
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help='number of commands to execute simultaneously')
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def WantPager(self, opt):
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return opt.project_header and opt.jobs == 1
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def _SerializeProject(self, project):
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""" Serialize a project._GitGetByExec instance.
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project._GitGetByExec is not pickle-able. Instead of trying to pass it
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around between processes, make a dict ourselves containing only the
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attributes that we need.
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"""
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return {
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'name': project.name,
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'relpath': project.relpath,
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'remote_name': project.remote.name,
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'lrev': project.GetRevisionId(),
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'rrev': project.revisionExpr,
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'annotations': dict((a.name, a.value) for a in project.annotations),
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'gitdir': project.gitdir,
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'worktree': project.worktree,
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}
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def Execute(self, opt, args):
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if not opt.command:
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self.Usage()
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cmd = [opt.command[0]]
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shell = True
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if re.compile(r'^[a-z0-9A-Z_/\.-]+$').match(cmd[0]):
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shell = False
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if shell:
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cmd.append(cmd[0])
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cmd.extend(opt.command[1:])
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if opt.project_header \
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and not shell \
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and cmd[0] == 'git':
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# If this is a direct git command that can enable colorized
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# output and the user prefers coloring, add --color into the
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# command line because we are going to wrap the command into
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# a pipe and git won't know coloring should activate.
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#
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for cn in cmd[1:]:
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if not cn.startswith('-'):
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break
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else:
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cn = None
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# pylint: disable=W0631
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if cn and cn in _CAN_COLOR:
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class ColorCmd(Coloring):
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def __init__(self, config, cmd):
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Coloring.__init__(self, config, cmd)
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if ColorCmd(self.manifest.manifestProject.config, cn).is_on:
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cmd.insert(cmd.index(cn) + 1, '--color')
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# pylint: enable=W0631
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mirror = self.manifest.IsMirror
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rc = 0
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if not opt.regex:
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projects = self.GetProjects(args)
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else:
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projects = self.FindProjects(args)
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os.environ['REPO_COUNT'] = str(len(projects))
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pool = multiprocessing.Pool(opt.jobs, InitWorker)
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try:
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config = self.manifest.manifestProject.config
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results_it = pool.imap(
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DoWorkWrapper,
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self.ProjectArgs(projects, mirror, opt, cmd, shell, config))
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pool.close()
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for r in results_it:
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rc = rc or r
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if r != 0 and opt.abort_on_errors:
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raise Exception('Aborting due to previous error')
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except (KeyboardInterrupt, WorkerKeyboardInterrupt):
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# Catch KeyboardInterrupt raised inside and outside of workers
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print('Interrupted - terminating the pool')
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pool.terminate()
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rc = rc or errno.EINTR
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except Exception as e:
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# Catch any other exceptions raised
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print('Got an error, terminating the pool: %r' % e,
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file=sys.stderr)
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pool.terminate()
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rc = rc or getattr(e, 'errno', 1)
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finally:
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pool.join()
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if rc != 0:
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sys.exit(rc)
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def ProjectArgs(self, projects, mirror, opt, cmd, shell, config):
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for cnt, p in enumerate(projects):
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try:
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project = self._SerializeProject(p)
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except Exception as e:
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print('Project list error: %r' % e,
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file=sys.stderr)
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return
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except KeyboardInterrupt:
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print('Project list interrupted',
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file=sys.stderr)
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return
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yield [mirror, opt, cmd, shell, cnt, config, project]
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class WorkerKeyboardInterrupt(Exception):
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""" Keyboard interrupt exception for worker processes. """
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pass
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def InitWorker():
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signal.signal(signal.SIGINT, signal.SIG_IGN)
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def DoWorkWrapper(args):
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""" A wrapper around the DoWork() method.
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Catch the KeyboardInterrupt exceptions here and re-raise them as a different,
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``Exception``-based exception to stop it flooding the console with stacktraces
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and making the parent hang indefinitely.
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"""
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project = args.pop()
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try:
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return DoWork(project, *args)
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except KeyboardInterrupt:
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print('%s: Worker interrupted' % project['name'])
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raise WorkerKeyboardInterrupt()
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def DoWork(project, mirror, opt, cmd, shell, cnt, config):
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env = os.environ.copy()
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def setenv(name, val):
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if val is None:
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val = ''
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if hasattr(val, 'encode'):
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val = val.encode()
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env[name] = val
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setenv('REPO_PROJECT', project['name'])
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setenv('REPO_PATH', project['relpath'])
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setenv('REPO_REMOTE', project['remote_name'])
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setenv('REPO_LREV', project['lrev'])
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setenv('REPO_RREV', project['rrev'])
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setenv('REPO_I', str(cnt + 1))
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for name in project['annotations']:
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setenv("REPO__%s" % (name), project['annotations'][name])
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if mirror:
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setenv('GIT_DIR', project['gitdir'])
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cwd = project['gitdir']
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else:
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cwd = project['worktree']
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if not os.path.exists(cwd):
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if (opt.project_header and opt.verbose) \
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or not opt.project_header:
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print('skipping %s/' % project['relpath'], file=sys.stderr)
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return
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if opt.project_header:
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stdin = subprocess.PIPE
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stdout = subprocess.PIPE
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stderr = subprocess.PIPE
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else:
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stdin = None
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stdout = None
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stderr = None
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p = subprocess.Popen(cmd,
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cwd=cwd,
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shell=shell,
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env=env,
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stdin=stdin,
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stdout=stdout,
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stderr=stderr)
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if opt.project_header:
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out = ForallColoring(config)
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out.redirect(sys.stdout)
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class sfd(object):
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def __init__(self, fd, dest):
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self.fd = fd
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self.dest = dest
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def fileno(self):
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return self.fd.fileno()
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empty = True
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errbuf = ''
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p.stdin.close()
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s_in = [sfd(p.stdout, sys.stdout),
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sfd(p.stderr, sys.stderr)]
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for s in s_in:
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flags = fcntl.fcntl(s.fd, fcntl.F_GETFL)
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fcntl.fcntl(s.fd, fcntl.F_SETFL, flags | os.O_NONBLOCK)
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while s_in:
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in_ready, _out_ready, _err_ready = select.select(s_in, [], [])
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for s in in_ready:
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buf = s.fd.read(4096)
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if not buf:
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s.fd.close()
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s_in.remove(s)
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continue
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if not opt.verbose:
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if s.fd != p.stdout:
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errbuf += buf
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continue
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if empty and out:
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if not cnt == 0:
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out.nl()
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if mirror:
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project_header_path = project['name']
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else:
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project_header_path = project['relpath']
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out.project('project %s/', project_header_path)
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out.nl()
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out.flush()
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if errbuf:
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sys.stderr.write(errbuf)
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sys.stderr.flush()
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errbuf = ''
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empty = False
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s.dest.write(buf)
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s.dest.flush()
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r = p.wait()
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return r
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