1 files changed, 114 insertions, 0 deletions
diff --git a/scripts/build-apex-bundle.py b/scripts/build-apex-bundle.py
new file mode 100644
index 000000000..dcdd9ef7d
--- /dev/null
+++ b/scripts/build-apex-bundle.py
@@ -0,0 +1,114 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2022 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.
+#
+"""A tool to create an APEX bundle out of Soong-built base.zip"""
+
+from __future__ import print_function
+
+import argparse
+import sys
+import tempfile
+import zipfile
+import os
+import json
+import subprocess
+
+
+def parse_args():
+  """Parse commandline arguments."""
+  parser = argparse.ArgumentParser()
+  parser.add_argument(
+      '--overwrite',
+      action='store_true',
+      help='If set, any previous existing output will be overwritten')
+  parser.add_argument('--output', help='specify the output .aab file')
+  parser.add_argument(
+      'input', help='specify the input <apex name>-base.zip file')
+  return parser.parse_args()
+
+
+def build_bundle(input, output, overwrite):
+  base_zip = zipfile.ZipFile(input)
+
+  tmpdir = tempfile.mkdtemp()
+  tmp_base_zip = os.path.join(tmpdir, 'base.zip')
+  tmp_bundle_config = os.path.join(tmpdir, 'bundle_config.json')
+
+  bundle_config = None
+  abi = []
+
+  # This block performs three tasks
+  # - extract/load bundle_config.json from input => bundle_config
+  # - get ABI from input => abi
+  # - discard bundle_config.json from input => tmp/base.zip
+  with zipfile.ZipFile(tmp_base_zip, 'a') as out:
+    for info in base_zip.infolist():
+
+      # discard bundle_config.json
+      if info.filename == 'bundle_config.json':
+        bundle_config = json.load(base_zip.open(info.filename))
+        continue
+
+      # get ABI from apex/{abi}.img
+      dir, basename = os.path.split(info.filename)
+      name, ext = os.path.splitext(basename)
+      if dir == 'apex' and ext == '.img':
+        abi.append(name)
+
+      # copy entries to tmp/base.zip
+      out.writestr(info, base_zip.open(info.filename).read())
+
+  base_zip.close()
+
+  if not bundle_config:
+    raise ValueError(f'bundle_config.json not found in {input}')
+  if len(abi) != 1:
+    raise ValueError(f'{input} should have only a single apex/*.img file')
+
+  # add ABI to tmp/bundle_config.json
+  apex_config = bundle_config['apex_config']
+  if 'supported_abi_set' not in apex_config:
+    apex_config['supported_abi_set'] = []
+  supported_abi_set = apex_config['supported_abi_set']
+  supported_abi_set.append({'abi': abi})
+
+  with open(tmp_bundle_config, 'w') as out:
+    json.dump(bundle_config, out)
+
+  # invoke bundletool
+  cmd = [
+      'bundletool', 'build-bundle', '--config', tmp_bundle_config, '--modules',
+      tmp_base_zip, '--output', output
+  ]
+  if overwrite:
+    cmd.append('--overwrite')
+  subprocess.check_call(cmd)
+
+
+def main():
+  """Program entry point."""
+  try:
+    args = parse_args()
+    build_bundle(args.input, args.output, args.overwrite)
+
+  # pylint: disable=broad-except
+  except Exception as err:
+    print('error: ' + str(err), file=sys.stderr)
+    sys.exit(-1)
+
+
+if __name__ == '__main__':
+  main()