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# Copyright (C) 2008 The Android Open Source Project
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.
import multiprocessing
import os
import optparse
import re
import sys
from event_log import EventLog
from error import NoSuchProjectError
from error import InvalidProjectGroupsError
import progress
# Are we generating man-pages?
GENERATE_MANPAGES = os.environ.get('_REPO_GENERATE_MANPAGES_') == ' indeed! '
# Number of projects to submit to a single worker process at a time.
# This number represents a tradeoff between the overhead of IPC and finer
# grained opportunity for parallelism. This particular value was chosen by
# iterating through powers of two until the overall performance no longer
# improved. The performance of this batch size is not a function of the
# number of cores on the system.
# How many jobs to run in parallel by default? This assumes the jobs are
# largely I/O bound and do not hit the network.
DEFAULT_LOCAL_JOBS = min(os.cpu_count(), 8)
class Command(object):
"""Base class for any command line action in repo.
# Singleton for all commands to track overall repo command execution and
# provide event summary to callers. Only used by sync subcommand currently.
# NB: This is being replaced by git trace2 events. See git_trace2_event_log.
event_log = EventLog()
# Whether this command is a "common" one, i.e. whether the user would commonly
# use it or it's a more uncommon command. This is used by the help command to
# show short-vs-full summaries.
COMMON = False
# Whether this command supports running in parallel. If greater than 0,
# it is the number of parallel jobs to default to.
def __init__(self, repodir=None, client=None, manifest=None, gitc_manifest=None,
self.repodir = repodir
self.client = client
self.manifest = manifest
self.gitc_manifest = gitc_manifest
self.git_event_log = git_event_log
# Cache for the OptionParser property.
self._optparse = None
def WantPager(self, _opt):
return False
def ReadEnvironmentOptions(self, opts):
""" Set options from environment variables. """
env_options = self._RegisteredEnvironmentOptions()
for env_key, opt_key in env_options.items():
# Get the user-set option value if any
opt_value = getattr(opts, opt_key)
# If the value is set, it means the user has passed it as a command
# line option, and we should use that. Otherwise we can try to set it
# with the value from the corresponding environment variable.
if opt_value is not None:
env_value = os.environ.get(env_key)
if env_value is not None:
setattr(opts, opt_key, env_value)
return opts
def OptionParser(self):
if self._optparse is None:
me = 'repo %s' % self.NAME
usage = self.helpUsage.strip().replace('%prog', me)
except AttributeError:
usage = 'repo %s' % self.NAME
epilog = 'Run `repo help %s` to view the detailed manual.' % self.NAME
self._optparse = optparse.OptionParser(usage=usage, epilog=epilog)
return self._optparse
def _CommonOptions(self, p, opt_v=True):
"""Initialize the option parser with common options.
These will show up for *all* subcommands, so use sparingly.
NB: Keep in sync with repo:InitParser().
g = p.add_option_group('Logging options')
opts = ['-v'] if opt_v else []
g.add_option(*opts, '--verbose',
dest='output_mode', action='store_true',
help='show all output')
g.add_option('-q', '--quiet',
dest='output_mode', action='store_false',
help='only show errors')
if self.PARALLEL_JOBS is not None:
default = 'based on number of CPU cores'
# Only include active cpu count if we aren't generating man pages.
default = f'%default; {default}'
'-j', '--jobs',
type=int, default=self.PARALLEL_JOBS,
help=f'number of jobs to run in parallel (default: {default})')
def _Options(self, p):
"""Initialize the option parser with subcommand-specific options."""
def _RegisteredEnvironmentOptions(self):
"""Get options that can be set from environment variables.
Return a dictionary mapping environment variable name
to option key name that it can override.
Example: {'REPO_MY_OPTION': 'my_option'}
Will allow the option with key value 'my_option' to be set
from the value in the environment variable named 'REPO_MY_OPTION'.
Note: This does not work properly for options that are explicitly
set to None by the user, or options that are defined with a
default value other than None.
return {}
def Usage(self):
"""Display usage and terminate.
def CommonValidateOptions(self, opt, args):
"""Validate common options."""
opt.quiet = opt.output_mode is False
opt.verbose = opt.output_mode is True
def ValidateOptions(self, opt, args):
"""Validate the user options & arguments before executing.
This is meant to help break the code up into logical steps. Some tips:
* Use self.OptionParser.error to display CLI related errors.
* Adjust opt member defaults as makes sense.
* Adjust the args list, but do so inplace so the caller sees updates.
* Try to avoid updating self state. Leave that to Execute.
def Execute(self, opt, args):
"""Perform the action, after option parsing is complete.
raise NotImplementedError
def ExecuteInParallel(jobs, func, inputs, callback, output=None, ordered=False):
"""Helper for managing parallel execution boiler plate.
For subcommands that can easily split their work up.
jobs: How many parallel processes to use.
func: The function to apply to each of the |inputs|. Usually a
functools.partial for wrapping additional arguments. It will be run
in a separate process, so it must be pickalable, so nested functions
won't work. Methods on the subcommand Command class should work.
inputs: The list of items to process. Must be a list.
callback: The function to pass the results to for processing. It will be
executed in the main thread and process the results of |func| as they
become available. Thus it may be a local nested function. Its return
value is passed back directly. It takes three arguments:
- The processing pool (or None with one job).
- The |output| argument.
- An iterator for the results.
output: An output manager. May be progress.Progess or color.Coloring.
ordered: Whether the jobs should be processed in order.
The |callback| function's results are returned.
# NB: Multiprocessing is heavy, so don't spin it up for one job.
if len(inputs) == 1 or jobs == 1:
return callback(None, output, (func(x) for x in inputs))
with multiprocessing.Pool(jobs) as pool:
submit = pool.imap if ordered else pool.imap_unordered
return callback(pool, output, submit(func, inputs, chunksize=WORKER_BATCH_SIZE))
if isinstance(output, progress.Progress):
def _ResetPathToProjectMap(self, projects):
self._by_path = dict((p.worktree, p) for p in projects)
def _UpdatePathToProjectMap(self, project):
self._by_path[project.worktree] = project
def _GetProjectByPath(self, manifest, path):
project = None
if os.path.exists(path):
oldpath = None
while (path and
path != oldpath and
path != manifest.topdir):
project = self._by_path[path]
except KeyError:
oldpath = path
path = os.path.dirname(path)
if not project and path == manifest.topdir:
project = self._by_path[path]
except KeyError:
project = self._by_path[path]
except KeyError:
return project
def GetProjects(self, args, manifest=None, groups='', missing_ok=False,
"""A list of projects that match the arguments.
if not manifest:
manifest = self.manifest
all_projects_list = manifest.projects
result = []
mp = manifest.manifestProject
if not groups:
groups = manifest.GetGroupsStr()
groups = [x for x in re.split(r'[,\s]+', groups) if x]
if not args:
derived_projects = {}
for project in all_projects_list:
if submodules_ok or project.sync_s:
derived_projects.update((, p)
for p in project.GetDerivedSubprojects())
for project in all_projects_list:
if (missing_ok or project.Exists) and project.MatchesGroups(groups):
for arg in args:
# We have to filter by manifest groups in case the requested project is
# checked out multiple times or differently based on them.
projects = [project for project in manifest.GetProjectsWithName(arg)
if project.MatchesGroups(groups)]
if not projects:
path = os.path.abspath(arg).replace('\\', '/')
project = self._GetProjectByPath(manifest, path)
# If it's not a derived project, update path->project mapping and
# search again, as arg might actually point to a derived subproject.
if (project and not project.Derived and (submodules_ok or
search_again = False
for subproject in project.GetDerivedSubprojects():
search_again = True
if search_again:
project = self._GetProjectByPath(manifest, path) or project
if project:
projects = [project]
if not projects:
raise NoSuchProjectError(arg)
for project in projects:
if not missing_ok and not project.Exists:
raise NoSuchProjectError('%s (%s)' % (arg, project.relpath))
if not project.MatchesGroups(groups):
raise InvalidProjectGroupsError(arg)
def _getpath(x):
return x.relpath
return result
def FindProjects(self, args, inverse=False):
result = []
patterns = [re.compile(r'%s' % a, re.IGNORECASE) for a in args]
for project in self.GetProjects(''):
for pattern in patterns:
match = or
if not inverse and match:
if inverse and match:
if inverse:
result.sort(key=lambda project: project.relpath)
return result
class InteractiveCommand(Command):
"""Command which requires user interaction on the tty and
must not run within a pager, even if the user asks to.
def WantPager(self, _opt):
return False
class PagedCommand(Command):
"""Command which defaults to output in a pager, as its
display tends to be larger than one screen full.
def WantPager(self, _opt):
return True
class MirrorSafeCommand(object):
"""Command permits itself to run within a mirror,
and does not require a working directory.
class GitcAvailableCommand(object):
"""Command that requires GITC to be available, but does
not require the local client to be a GITC client.
class GitcClientCommand(object):
"""Command that requires the local client to be a GITC