| #!/usr/bin/env python3 |
| # Copyright 2022 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| """Run a bazel command to ensure the @fuchsia_sdk repository is populated.""" |
| |
| import argparse |
| import errno |
| import filecmp |
| import os |
| import shlex |
| import shutil |
| import subprocess |
| import sys |
| |
| |
| def main(): |
| parser = argparse.ArgumentParser(description=__doc__) |
| parser.add_argument( |
| '--bazel-launcher', |
| required=True, |
| help='Path to Bazel launcher script.') |
| parser.add_argument( |
| '--output-symlink', |
| required=True, |
| help='Symlink to create pointing to the repository\'s directory') |
| |
| args = parser.parse_args() |
| |
| if not os.path.exists(args.bazel_launcher): |
| return parser.error( |
| 'Bazel launcher does not exist: %s' % args.bazel_launcher) |
| |
| cmd = [ |
| args.bazel_launcher, |
| 'build', |
| '--verbose_failures', |
| '@fuchsia_sdk//:BUILD.bazel', |
| ] |
| ret = subprocess.run(cmd) |
| if ret.returncode != 0: |
| print( |
| 'ERROR when calling Bazel. To reproduce, run this in the Ninja output directory:\n\n %s\n' |
| % ' '.join(shlex.quote(c) for c in cmd), |
| file=sys.stderr) |
| return 1 |
| |
| # The name of the external repository can vary greatly with BzlMod |
| # depending on how it was defined through MODULE.bazel. |
| # TODO(digit): When Bazel 6.0 is out, replace this probing with a query |
| # that can return the actual path correctly. |
| candidates = [ |
| 'fuchsia_sdk', |
| 'fuchsia_sdk.override', |
| 'fuchsia_sdk_repositories~fuchsia_sdk', |
| 'fuchsia_sdk_repositories~fuchsia_sdk~local', |
| ] |
| topdir = os.path.dirname(args.bazel_launcher) |
| fuchsia_sdk_dir = None |
| for candidate in candidates: |
| candidate_dir = os.path.join( |
| topdir, 'output_base', 'external', candidate) |
| if os.path.exists(candidate_dir): |
| fuchsia_sdk_dir = os.path.abspath(candidate_dir) |
| break |
| |
| assert fuchsia_sdk_dir, 'Could not find @fuchsia_sdk repository location!!' |
| |
| # Re-generate the symlink if its path has changed, or if it does not exist. |
| link_path = os.path.abspath(args.output_symlink) |
| link_dir = os.path.dirname(link_path) |
| if os.path.exists(link_path): |
| if os.path.islink(link_path): |
| target_path = os.readlink(link_path) |
| if not os.path.isabs(target_path): |
| target_path = os.path.abspath( |
| os.path.realpath(os.path.join(link_dir, target_path))) |
| |
| if target_path == fuchsia_sdk_dir: |
| # Path did not change, exit now |
| return 0 |
| |
| os.unlink(link_path) |
| |
| target_path = os.path.relpath(fuchsia_sdk_dir, link_dir) |
| os.symlink(fuchsia_sdk_dir, link_path) |
| |
| # Done! |
| return 0 |
| |
| |
| if __name__ == "__main__": |
| sys.exit(main()) |
