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# Copyright (C) 2024 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 os
from typing import List, Set
from command import Command
import platform_utils
from progress import Progress
from project import Project
class Gc(Command):
COMMON = True
helpSummary = "Cleaning up internal repo state."
helpUsage = """
%prog
"""
def _Options(self, p):
p.add_option(
"-n",
"--dry-run",
dest="dryrun",
default=False,
action="store_true",
help="do everything except actually delete",
)
p.add_option(
"-y",
"--yes",
default=False,
action="store_true",
help="answer yes to all safe prompts",
)
def _find_git_to_delete(
self, to_keep: Set[str], start_dir: str
) -> Set[str]:
"""Searches no longer needed ".git" directories.
Scans the file system starting from `start_dir` and removes all
directories that end with ".git" that are not in the `to_keep` set.
"""
to_delete = set()
for root, dirs, _ in platform_utils.walk(start_dir):
for directory in dirs:
if not directory.endswith(".git"):
continue
path = os.path.join(root, directory)
if path not in to_keep:
to_delete.add(path)
return to_delete
def delete_unused_projects(self, projects: List[Project], opt):
print(f"Scanning filesystem under {self.repodir}...")
project_paths = set()
project_object_paths = set()
for project in projects:
project_paths.add(project.gitdir)
project_object_paths.add(project.objdir)
to_delete = self._find_git_to_delete(
project_paths, os.path.join(self.repodir, "projects")
)
to_delete.update(
self._find_git_to_delete(
project_object_paths,
os.path.join(self.repodir, "project-objects"),
)
)
if not to_delete:
print("Nothing to clean up.")
return 0
print("Identified the following projects are no longer used:")
print("\n".join(to_delete))
print("")
if not opt.yes:
print(
"If you proceed, any local commits in those projects will be "
"destroyed!"
)
ask = input("Proceed? [y/N] ")
if ask.lower() != "y":
return 1
pm = Progress(
"Deleting",
len(to_delete),
delay=False,
quiet=opt.quiet,
show_elapsed=True,
elide=True,
)
for path in to_delete:
if opt.dryrun:
print(f"\nWould have deleted ${path}")
else:
tmp_path = os.path.join(
os.path.dirname(path),
f"to_be_deleted_{os.path.basename(path)}",
)
platform_utils.rename(path, tmp_path)
platform_utils.rmtree(tmp_path)
pm.update(msg=path)
pm.end()
return 0
def Execute(self, opt, args):
projects: List[Project] = self.GetProjects(
args, all_manifests=not opt.this_manifest_only
)
return self.delete_unused_projects(projects, opt)
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