mirror of
https://gerrit.googlesource.com/git-repo
synced 2024-12-21 07:16:21 +00:00
78e82ec78e
Change-Id: If67f8660cfb0479f0e710b3566285ef401fcf077 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/355969 Tested-by: Sergiy Belozorov <sergiyb@chromium.org> Reviewed-by: Mike Frysinger <vapier@google.com>
446 lines
16 KiB
Python
446 lines
16 KiB
Python
# 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 multiprocessing
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import os
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import optparse
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import re
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import sys
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from event_log import EventLog
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from error import NoSuchProjectError
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from error import InvalidProjectGroupsError
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import progress
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# Are we generating man-pages?
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GENERATE_MANPAGES = os.environ.get('_REPO_GENERATE_MANPAGES_') == ' indeed! '
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# Number of projects to submit to a single worker process at a time.
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# This number represents a tradeoff between the overhead of IPC and finer
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# grained opportunity for parallelism. This particular value was chosen by
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# iterating through powers of two until the overall performance no longer
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# improved. The performance of this batch size is not a function of the
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# number of cores on the system.
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WORKER_BATCH_SIZE = 32
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# How many jobs to run in parallel by default? This assumes the jobs are
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# largely I/O bound and do not hit the network.
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DEFAULT_LOCAL_JOBS = min(os.cpu_count(), 8)
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class Command(object):
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"""Base class for any command line action in repo.
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"""
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# Singleton for all commands to track overall repo command execution and
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# provide event summary to callers. Only used by sync subcommand currently.
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#
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# NB: This is being replaced by git trace2 events. See git_trace2_event_log.
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event_log = EventLog()
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# Whether this command is a "common" one, i.e. whether the user would commonly
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# use it or it's a more uncommon command. This is used by the help command to
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# show short-vs-full summaries.
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COMMON = False
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# Whether this command supports running in parallel. If greater than 0,
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# it is the number of parallel jobs to default to.
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PARALLEL_JOBS = None
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# Whether this command supports Multi-manifest. If False, then main.py will
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# iterate over the manifests and invoke the command once per (sub)manifest.
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# This is only checked after calling ValidateOptions, so that partially
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# migrated subcommands can set it to False.
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MULTI_MANIFEST_SUPPORT = True
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def __init__(self, repodir=None, client=None, manifest=None, gitc_manifest=None,
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git_event_log=None, outer_client=None, outer_manifest=None):
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self.repodir = repodir
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self.client = client
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self.outer_client = outer_client or client
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self.manifest = manifest
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self.gitc_manifest = gitc_manifest
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self.git_event_log = git_event_log
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self.outer_manifest = outer_manifest
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# Cache for the OptionParser property.
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self._optparse = None
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def WantPager(self, _opt):
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return False
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def ReadEnvironmentOptions(self, opts):
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""" Set options from environment variables. """
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env_options = self._RegisteredEnvironmentOptions()
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for env_key, opt_key in env_options.items():
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# Get the user-set option value if any
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opt_value = getattr(opts, opt_key)
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# If the value is set, it means the user has passed it as a command
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# line option, and we should use that. Otherwise we can try to set it
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# with the value from the corresponding environment variable.
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if opt_value is not None:
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continue
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env_value = os.environ.get(env_key)
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if env_value is not None:
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setattr(opts, opt_key, env_value)
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return opts
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@property
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def OptionParser(self):
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if self._optparse is None:
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try:
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me = 'repo %s' % self.NAME
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usage = self.helpUsage.strip().replace('%prog', me)
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except AttributeError:
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usage = 'repo %s' % self.NAME
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epilog = 'Run `repo help %s` to view the detailed manual.' % self.NAME
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self._optparse = optparse.OptionParser(usage=usage, epilog=epilog)
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self._CommonOptions(self._optparse)
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self._Options(self._optparse)
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return self._optparse
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def _CommonOptions(self, p, opt_v=True):
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"""Initialize the option parser with common options.
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These will show up for *all* subcommands, so use sparingly.
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NB: Keep in sync with repo:InitParser().
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"""
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g = p.add_option_group('Logging options')
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opts = ['-v'] if opt_v else []
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g.add_option(*opts, '--verbose',
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dest='output_mode', action='store_true',
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help='show all output')
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g.add_option('-q', '--quiet',
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dest='output_mode', action='store_false',
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help='only show errors')
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if self.PARALLEL_JOBS is not None:
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default = 'based on number of CPU cores'
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if not GENERATE_MANPAGES:
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# Only include active cpu count if we aren't generating man pages.
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default = f'%default; {default}'
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p.add_option(
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'-j', '--jobs',
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type=int, default=self.PARALLEL_JOBS,
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help=f'number of jobs to run in parallel (default: {default})')
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m = p.add_option_group('Multi-manifest options')
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m.add_option('--outer-manifest', action='store_true', default=None,
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help='operate starting at the outermost manifest')
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m.add_option('--no-outer-manifest', dest='outer_manifest',
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action='store_false', help='do not operate on outer manifests')
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m.add_option('--this-manifest-only', action='store_true', default=None,
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help='only operate on this (sub)manifest')
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m.add_option('--no-this-manifest-only', '--all-manifests',
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dest='this_manifest_only', action='store_false',
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help='operate on this manifest and its submanifests')
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def _Options(self, p):
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"""Initialize the option parser with subcommand-specific options."""
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def _RegisteredEnvironmentOptions(self):
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"""Get options that can be set from environment variables.
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Return a dictionary mapping environment variable name
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to option key name that it can override.
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Example: {'REPO_MY_OPTION': 'my_option'}
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Will allow the option with key value 'my_option' to be set
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from the value in the environment variable named 'REPO_MY_OPTION'.
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Note: This does not work properly for options that are explicitly
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set to None by the user, or options that are defined with a
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default value other than None.
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"""
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return {}
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def Usage(self):
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"""Display usage and terminate.
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"""
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self.OptionParser.print_usage()
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sys.exit(1)
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def CommonValidateOptions(self, opt, args):
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"""Validate common options."""
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opt.quiet = opt.output_mode is False
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opt.verbose = opt.output_mode is True
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if opt.outer_manifest is None:
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# By default, treat multi-manifest instances as a single manifest from
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# the user's perspective.
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opt.outer_manifest = True
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def ValidateOptions(self, opt, args):
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"""Validate the user options & arguments before executing.
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This is meant to help break the code up into logical steps. Some tips:
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* Use self.OptionParser.error to display CLI related errors.
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* Adjust opt member defaults as makes sense.
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* Adjust the args list, but do so inplace so the caller sees updates.
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* Try to avoid updating self state. Leave that to Execute.
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"""
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def Execute(self, opt, args):
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"""Perform the action, after option parsing is complete.
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"""
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raise NotImplementedError
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@staticmethod
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def ExecuteInParallel(jobs, func, inputs, callback, output=None, ordered=False):
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"""Helper for managing parallel execution boiler plate.
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For subcommands that can easily split their work up.
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Args:
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jobs: How many parallel processes to use.
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func: The function to apply to each of the |inputs|. Usually a
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functools.partial for wrapping additional arguments. It will be run
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in a separate process, so it must be pickalable, so nested functions
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won't work. Methods on the subcommand Command class should work.
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inputs: The list of items to process. Must be a list.
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callback: The function to pass the results to for processing. It will be
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executed in the main thread and process the results of |func| as they
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become available. Thus it may be a local nested function. Its return
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value is passed back directly. It takes three arguments:
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- The processing pool (or None with one job).
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- The |output| argument.
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- An iterator for the results.
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output: An output manager. May be progress.Progess or color.Coloring.
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ordered: Whether the jobs should be processed in order.
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Returns:
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The |callback| function's results are returned.
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"""
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try:
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# NB: Multiprocessing is heavy, so don't spin it up for one job.
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if len(inputs) == 1 or jobs == 1:
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return callback(None, output, (func(x) for x in inputs))
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else:
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with multiprocessing.Pool(jobs) as pool:
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submit = pool.imap if ordered else pool.imap_unordered
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return callback(pool, output, submit(func, inputs, chunksize=WORKER_BATCH_SIZE))
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finally:
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if isinstance(output, progress.Progress):
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output.end()
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def _ResetPathToProjectMap(self, projects):
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self._by_path = dict((p.worktree, p) for p in projects)
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def _UpdatePathToProjectMap(self, project):
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self._by_path[project.worktree] = project
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def _GetProjectByPath(self, manifest, path):
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project = None
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if os.path.exists(path):
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oldpath = None
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while (path and
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path != oldpath and
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path != manifest.topdir):
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try:
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project = self._by_path[path]
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break
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except KeyError:
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oldpath = path
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path = os.path.dirname(path)
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if not project and path == manifest.topdir:
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try:
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project = self._by_path[path]
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except KeyError:
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pass
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else:
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try:
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project = self._by_path[path]
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except KeyError:
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pass
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return project
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def GetProjects(self, args, manifest=None, groups='', missing_ok=False,
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submodules_ok=False, all_manifests=False):
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"""A list of projects that match the arguments.
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Args:
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args: a list of (case-insensitive) strings, projects to search for.
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manifest: an XmlManifest, the manifest to use, or None for default.
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groups: a string, the manifest groups in use.
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missing_ok: a boolean, whether to allow missing projects.
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submodules_ok: a boolean, whether to allow submodules.
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all_manifests: a boolean, if True then all manifests and submanifests are
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used. If False, then only the local (sub)manifest is used.
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Returns:
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A list of matching Project instances.
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"""
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if all_manifests:
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if not manifest:
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manifest = self.manifest.outer_client
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all_projects_list = manifest.all_projects
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else:
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if not manifest:
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manifest = self.manifest
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all_projects_list = manifest.projects
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result = []
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if not groups:
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groups = manifest.GetGroupsStr()
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groups = [x for x in re.split(r'[,\s]+', groups) if x]
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if not args:
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derived_projects = {}
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for project in all_projects_list:
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if submodules_ok or project.sync_s:
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derived_projects.update((p.name, p)
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for p in project.GetDerivedSubprojects())
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all_projects_list.extend(derived_projects.values())
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for project in all_projects_list:
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if (missing_ok or project.Exists) and project.MatchesGroups(groups):
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result.append(project)
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else:
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self._ResetPathToProjectMap(all_projects_list)
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for arg in args:
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# We have to filter by manifest groups in case the requested project is
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# checked out multiple times or differently based on them.
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projects = [project
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for project in manifest.GetProjectsWithName(
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arg, all_manifests=all_manifests)
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if project.MatchesGroups(groups)]
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if not projects:
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path = os.path.abspath(arg).replace('\\', '/')
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tree = manifest
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if all_manifests:
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# Look for the deepest matching submanifest.
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for tree in reversed(list(manifest.all_manifests)):
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if path.startswith(tree.topdir):
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break
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project = self._GetProjectByPath(tree, path)
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# If it's not a derived project, update path->project mapping and
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# search again, as arg might actually point to a derived subproject.
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if (project and not project.Derived and (submodules_ok or
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project.sync_s)):
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search_again = False
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for subproject in project.GetDerivedSubprojects():
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self._UpdatePathToProjectMap(subproject)
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search_again = True
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if search_again:
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project = self._GetProjectByPath(manifest, path) or project
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if project:
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projects = [project]
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if not projects:
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raise NoSuchProjectError(arg)
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for project in projects:
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if not missing_ok and not project.Exists:
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raise NoSuchProjectError('%s (%s)' % (
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arg, project.RelPath(local=not all_manifests)))
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if not project.MatchesGroups(groups):
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raise InvalidProjectGroupsError(arg)
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result.extend(projects)
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def _getpath(x):
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return x.relpath
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result.sort(key=_getpath)
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return result
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def FindProjects(self, args, inverse=False, all_manifests=False):
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"""Find projects from command line arguments.
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Args:
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args: a list of (case-insensitive) strings, projects to search for.
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inverse: a boolean, if True, then projects not matching any |args| are
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returned.
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all_manifests: a boolean, if True then all manifests and submanifests are
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used. If False, then only the local (sub)manifest is used.
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"""
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result = []
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patterns = [re.compile(r'%s' % a, re.IGNORECASE) for a in args]
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for project in self.GetProjects('', all_manifests=all_manifests):
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paths = [project.name, project.RelPath(local=not all_manifests)]
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for pattern in patterns:
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match = any(pattern.search(x) for x in paths)
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if not inverse and match:
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result.append(project)
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break
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if inverse and match:
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break
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else:
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if inverse:
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result.append(project)
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result.sort(key=lambda project: (project.manifest.path_prefix,
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project.relpath))
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return result
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def ManifestList(self, opt):
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"""Yields all of the manifests to traverse.
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Args:
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opt: The command options.
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"""
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top = self.outer_manifest
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if not opt.outer_manifest or opt.this_manifest_only:
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top = self.manifest
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yield top
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if not opt.this_manifest_only:
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for child in top.all_children:
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yield child
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class InteractiveCommand(Command):
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"""Command which requires user interaction on the tty and
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must not run within a pager, even if the user asks to.
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"""
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def WantPager(self, _opt):
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return False
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class PagedCommand(Command):
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"""Command which defaults to output in a pager, as its
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display tends to be larger than one screen full.
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"""
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def WantPager(self, _opt):
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return True
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class MirrorSafeCommand(object):
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"""Command permits itself to run within a mirror,
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and does not require a working directory.
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"""
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class GitcAvailableCommand(object):
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"""Command that requires GITC to be available, but does
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not require the local client to be a GITC client.
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"""
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class GitcClientCommand(object):
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"""Command that requires the local client to be a GITC
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client.
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"""
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