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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
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import functools
from typing import NamedTuple
from command import Command
from command import DEFAULT_LOCAL_JOBS
from error import RepoExitError
from git_command import git
from git_config import IsImmutable
from progress import Progress
from project import Project
from repo_logging import RepoLogger
logger = RepoLogger(__file__)
class ExecuteOneResult(NamedTuple):
project: Project
error: Exception
class StartError(RepoExitError):
"""Exit error for failed start command."""
class Start(Command):
COMMON = True
helpSummary = "Start a new branch for development"
helpUsage = """
%prog <newbranchname> [--all | <project>...]
"""
helpDescription = """
'%prog' begins a new branch of development, starting from the
revision specified in the manifest.
"""
PARALLEL_JOBS = DEFAULT_LOCAL_JOBS
def _Options(self, p):
p.add_option(
"--all",
dest="all",
action="store_true",
help="begin branch in all projects",
)
p.add_option(
"-r",
"--rev",
"--revision",
dest="revision",
help="point branch at this revision instead of upstream",
)
p.add_option(
"--head",
"--HEAD",
dest="revision",
action="store_const",
const="HEAD",
help="abbreviation for --rev HEAD",
)
def ValidateOptions(self, opt, args):
if not args:
self.Usage()
nb = args[0]
if not git.check_ref_format("heads/%s" % nb):
self.OptionParser.error("'%s' is not a valid name" % nb)
def _ExecuteOne(self, revision, nb, project):
"""Start one project."""
# If the current revision is immutable, such as a SHA1, a tag or
# a change, then we can't push back to it. Substitute with
# dest_branch, if defined; or with manifest default revision instead.
branch_merge = ""
error = None
if IsImmutable(project.revisionExpr):
if project.dest_branch:
branch_merge = project.dest_branch
else:
branch_merge = self.manifest.default.revisionExpr
try:
project.StartBranch(
nb, branch_merge=branch_merge, revision=revision
)
except Exception as e:
logger.error("error: unable to checkout %s: %s", project.name, e)
error = e
return ExecuteOneResult(project, error)
def Execute(self, opt, args):
nb = args[0]
err_projects = []
err = []
projects = []
if not opt.all:
projects = args[1:]
if len(projects) < 1:
projects = ["."] # start it in the local project by default
all_projects = self.GetProjects(
projects,
all_manifests=not opt.this_manifest_only,
)
def _ProcessResults(_pool, pm, results):
for result in results:
if result.error:
err_projects.append(result.project)
err.append(result.error)
pm.update(msg="")
self.ExecuteInParallel(
opt.jobs,
functools.partial(self._ExecuteOne, opt.revision, nb),
all_projects,
callback=_ProcessResults,
output=Progress(
f"Starting {nb}", len(all_projects), quiet=opt.quiet
),
)
if err_projects:
for p in err_projects:
logger.error(
"error: %s/: cannot start %s",
p.RelPath(local=opt.this_manifest_only),
nb,
)
msg_fmt = "cannot start %d project(s)"
self.git_event_log.ErrorEvent(
msg_fmt % (len(err_projects)), msg_fmt
)
raise StartError(aggregate_errors=err)
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