Merge "ApplicationLoaders: hard failures & tests" (7bdb242a) · Commits · e / os / android_frameworks_base

core/java/android/app/ApplicationLoaders.java

+8 −9

Original line number	Diff line number	Diff line
		@@ -145,8 +145,7 @@ public class ApplicationLoaders {
		*/
		public void createAndCacheNonBootclasspathSystemClassLoaders(SharedLibraryInfo[] libs) {
		if (mSystemLibsCacheMap != null) {
		Log.wtf(TAG, "Already cached.");
		return;
		throw new IllegalStateException("Already cached.");
		}

		mSystemLibsCacheMap = new HashMap<String, CachedClassLoader>();
		@@ -159,7 +158,8 @@ public class ApplicationLoaders {
		/**
		* Caches a single non-bootclasspath class loader.
		*
		* All of this library's dependencies must have previously been cached.
		* All of this library's dependencies must have previously been cached. Otherwise, an exception
		* is thrown.
		*/
		private void createAndCacheNonBootclasspathSystemClassLoader(SharedLibraryInfo lib) {
		String path = lib.getPath();
		@@ -174,9 +174,8 @@ public class ApplicationLoaders {
		CachedClassLoader cached = mSystemLibsCacheMap.get(dependencyPath);

		if (cached == null) {
		Log.e(TAG, "Failed to find dependency " + dependencyPath
		throw new IllegalStateException("Failed to find dependency " + dependencyPath
		+ " of cachedlibrary " + path);
		return;
		}

		sharedLibraries.add(cached.loader);
		@@ -189,8 +188,8 @@ public class ApplicationLoaders {
		null /cacheKey/, null /classLoaderName/, sharedLibraries /sharedLibraries/);

		if (classLoader == null) {
		Log.e(TAG, "Failed to cache " + path);
		return;
		// bad configuration or break in classloading code
		throw new IllegalStateException("Failed to cache " + path);
		}

		CachedClassLoader cached = new CachedClassLoader();
		@@ -215,7 +214,7 @@ public class ApplicationLoaders {
		*
		* If there is an error or the cache is not available, this returns null.
		*/
		private ClassLoader getCachedNonBootclasspathSystemLib(String zip, ClassLoader parent,
		public ClassLoader getCachedNonBootclasspathSystemLib(String zip, ClassLoader parent,
		String classLoaderName, List<ClassLoader> sharedLibraries) {
		if (mSystemLibsCacheMap == null) {
		return null;

core/tests/coretests/src/android/app/ApplicationLoadersTest.java

0 → 100644

+138 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2019 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.
		*/

		package android.app;

		import static org.junit.Assert.assertEquals;
		import static org.junit.Assert.assertNotEquals;

		import android.content.pm.SharedLibraryInfo;

		import androidx.test.filters.SmallTest;
		import androidx.test.runner.AndroidJUnit4;

		import org.junit.Test;
		import org.junit.runner.RunWith;

		import java.util.ArrayList;

		@RunWith(AndroidJUnit4.class)
		@SmallTest
		public class ApplicationLoadersTest {

		// a library installed onto the device with no dependencies
		private static final String LIB_A = "/system/framework/android.hidl.base-V1.0-java.jar";
		// a library installed onto the device which only depends on A
		private static final String LIB_DEP_A = "/system/framework/android.hidl.manager-V1.0-java.jar";

		private static SharedLibraryInfo createLib(String zip) {
		return new SharedLibraryInfo(
		zip, null /packageName/, null /codePaths/, null /name/, 0 /version/,
		SharedLibraryInfo.TYPE_BUILTIN, null /declaringPackage/,
		null /dependentPackages/, null /dependencies/);
		}

		@Test
		public void testGetNonExistantLib() {
		ApplicationLoaders loaders = new ApplicationLoaders();
		assertEquals(null, loaders.getCachedNonBootclasspathSystemLib(
		"/system/framework/nonexistantlib.jar", null, null, null));
		}

		@Test
		public void testCacheExistantLib() {
		ApplicationLoaders loaders = new ApplicationLoaders();
		SharedLibraryInfo libA = createLib(LIB_A);

		loaders.createAndCacheNonBootclasspathSystemClassLoaders(new SharedLibraryInfo[]{libA});

		assertNotEquals(null, loaders.getCachedNonBootclasspathSystemLib(
		LIB_A, null, null, null));
		}

		@Test
		public void testNonNullParent() {
		ApplicationLoaders loaders = new ApplicationLoaders();
		SharedLibraryInfo libA = createLib(LIB_A);

		ClassLoader parent = ClassLoader.getSystemClassLoader();
		assertNotEquals(null, parent);

		loaders.createAndCacheNonBootclasspathSystemClassLoaders(new SharedLibraryInfo[]{libA});

		assertEquals(null, loaders.getCachedNonBootclasspathSystemLib(
		LIB_A, parent, null, null));
		}

		@Test
		public void testNonNullClassLoaderNamespace() {
		ApplicationLoaders loaders = new ApplicationLoaders();
		SharedLibraryInfo libA = createLib(LIB_A);

		loaders.createAndCacheNonBootclasspathSystemClassLoaders(new SharedLibraryInfo[]{libA});

		assertEquals(null, loaders.getCachedNonBootclasspathSystemLib(
		LIB_A, null, "other classloader", null));
		}

		@Test
		public void testDifferentSharedLibraries() {
		ApplicationLoaders loaders = new ApplicationLoaders();
		SharedLibraryInfo libA = createLib(LIB_A);

		// any other existant lib
		ClassLoader dep = ClassLoader.getSystemClassLoader();
		ArrayList<ClassLoader> sharedLibraries = new ArrayList<>();
		sharedLibraries.add(dep);

		loaders.createAndCacheNonBootclasspathSystemClassLoaders(new SharedLibraryInfo[]{libA});

		assertEquals(null, loaders.getCachedNonBootclasspathSystemLib(
		LIB_A, null, null, sharedLibraries));
		}

		@Test
		public void testDependentLibs() {
		ApplicationLoaders loaders = new ApplicationLoaders();
		SharedLibraryInfo libA = createLib(LIB_A);
		SharedLibraryInfo libB = createLib(LIB_DEP_A);
		libB.addDependency(libA);

		loaders.createAndCacheNonBootclasspathSystemClassLoaders(
		new SharedLibraryInfo[]{libA, libB});

		ClassLoader loadA = loaders.getCachedNonBootclasspathSystemLib(
		LIB_A, null, null, null);
		assertNotEquals(null, loadA);

		ArrayList<ClassLoader> sharedLibraries = new ArrayList<>();
		sharedLibraries.add(loadA);

		assertNotEquals(null, loaders.getCachedNonBootclasspathSystemLib(
		LIB_DEP_A, null, null, sharedLibraries));
		}

		@Test(expected = IllegalStateException.class)
		public void testDependentLibsWrongOrder() {
		ApplicationLoaders loaders = new ApplicationLoaders();
		SharedLibraryInfo libA = createLib(LIB_A);
		SharedLibraryInfo libB = createLib(LIB_DEP_A);
		libB.addDependency(libA);

		loaders.createAndCacheNonBootclasspathSystemClassLoaders(
		new SharedLibraryInfo[]{libB, libA});
		}
		}