Add jarjar rules generator
(This rolls forward part of a previous change, now that jarjar was fixed
to not get very slow when the number of rules increases).
Jarjar rules are hard to keep in sync with code, and hard to maintain
manually as the distinction between what should and should not be
jarjared is not always clear. This results in unsafe binaries that are
manually maintained, and developer frustration when something fails due
to incorrect jarjar rules.
Add utility to autogenerate jarjar rules, which can be run at build time
time (via a genrule) instead. The generator scans pre-jarjar
intermediate artifacts, and outputs jarjar rules for every class to put
it in a package specific to the module. The only exceptions are:
- Classes that are API (module-lib API is the largest API surface of
the module, so module-lib API stubs would typically be used)
- Classes that have unsupportedappusage symbols
- Classes that are excluded manually (for example, because they have
hardcoded external references, like for
ConnectivityServiceInitializer in SystemServer).
Bug: 217129444
Test: atest jarjar-rules-generator-test;
Change-Id: I3493957e39a661b6c2e330944e7c3023b8f3203e
diff --git a/tools/gen_jarjar_test.py b/tools/gen_jarjar_test.py
new file mode 100644
index 0000000..8d8e82b
--- /dev/null
+++ b/tools/gen_jarjar_test.py
@@ -0,0 +1,57 @@
+# 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.
+#
+# 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 gen_jarjar
+import unittest
+
+
+class TestGenJarjar(unittest.TestCase):
+ def test_gen_rules(self):
+ args = gen_jarjar.parse_arguments([
+ "--jars", "jarjar-rules-generator-testjavalib.jar",
+ "--prefix", "jarjar.prefix",
+ "--output", "test-output-rules.txt",
+ "--apistubs", "framework-connectivity.stubs.module_lib.jar",
+ "--unsupportedapi", "testdata/test-unsupportedappusage.txt",
+ "--excludes", "testdata/test-jarjar-excludes.txt",
+ ])
+ gen_jarjar.make_jarjar_rules(args)
+
+ with open(args.output) as out:
+ lines = out.readlines()
+
+ self.assertListEqual([
+ 'rule test.utils.TestUtilClass jarjar.prefix.@0\n',
+ 'rule test.utils.TestUtilClassTest jarjar.prefix.@0\n',
+ 'rule test.utils.TestUtilClassTest$* jarjar.prefix.@0\n',
+ 'rule test.utils.TestUtilClass$TestInnerClass jarjar.prefix.@0\n',
+ 'rule test.utils.TestUtilClass$TestInnerClassTest jarjar.prefix.@0\n',
+ 'rule test.utils.TestUtilClass$TestInnerClassTest$* jarjar.prefix.@0\n'], lines)
+
+
+if __name__ == '__main__':
+ # Need verbosity=2 for the test results parser to find results
+ unittest.main(verbosity=2)