Run expiration when rollback lifetime is changed. DO NOT MERGE am: 9f8407b0aa (8121699d) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/rollback/RollbackManagerServiceImpl.java

+8 −12

Original line number	Diff line number	Diff line
		@@ -137,6 +137,7 @@ class RollbackManagerServiceImpl extends IRollbackManager.Stub {
		private final Installer mInstaller;
		private final RollbackPackageHealthObserver mPackageHealthObserver;
		private final AppDataRollbackHelper mAppDataRollbackHelper;
		private final Runnable mRunExpiration = this::runExpiration;

		// The # of milli-seconds to sleep for each received ACTION_PACKAGE_ENABLE_ROLLBACK.
		// Used by #blockRollbackManager to test timeout in enabling rollbacks.
		@@ -516,6 +517,7 @@ class RollbackManagerServiceImpl extends IRollbackManager.Stub {
		mRollbackLifetimeDurationInMillis = DEFAULT_ROLLBACK_LIFETIME_DURATION_MILLIS;
		}
		Slog.d(TAG, "mRollbackLifetimeDurationInMillis=" + mRollbackLifetimeDurationInMillis);
		runExpiration();
		}

		@AnyThread
		@@ -644,6 +646,8 @@ class RollbackManagerServiceImpl extends IRollbackManager.Stub {
		// Schedules future expiration as appropriate.
		@WorkerThread
		private void runExpiration() {
		getHandler().removeCallbacks(mRunExpiration);

		Instant now = Instant.now();
		Instant oldest = null;
		synchronized (mLock) {
		@@ -667,20 +671,12 @@ class RollbackManagerServiceImpl extends IRollbackManager.Stub {
		}

		if (oldest != null) {
		scheduleExpiration(now.until(oldest.plusMillis(mRollbackLifetimeDurationInMillis),
		ChronoUnit.MILLIS));
		long delay = now.until(
		oldest.plusMillis(mRollbackLifetimeDurationInMillis), ChronoUnit.MILLIS);
		getHandler().postDelayed(mRunExpiration, delay);
		}
		}

		/**
		* Schedules an expiration check to be run after the given duration in
		* milliseconds has gone by.
		*/
		@AnyThread
		private void scheduleExpiration(long duration) {
		getHandler().postDelayed(() -> runExpiration(), duration);
		}

		@AnyThread
		private Handler getHandler() {
		return mHandlerThread.getThreadHandler();
		@@ -1179,7 +1175,7 @@ class RollbackManagerServiceImpl extends IRollbackManager.Stub {
		// prepare to rollback if packages crashes too frequently.
		mPackageHealthObserver.startObservingHealth(rollback.getPackageNames(),
		mRollbackLifetimeDurationInMillis);
		scheduleExpiration(mRollbackLifetimeDurationInMillis);
		runExpiration();
		}

		/*

tests/RollbackTest/RollbackTest/src/com/android/tests/rollback/RollbackTest.java

+47 −0

Original line number	Diff line number	Diff line
		@@ -434,6 +434,53 @@ public class RollbackTest {
		}
		}

		/**
		* Test that available rollbacks should expire correctly when the property
		* {@link RollbackManager#PROPERTY_ROLLBACK_LIFETIME_MILLIS} is changed
		*/
		@Test
		public void testRollbackExpiresWhenLifetimeChanges() throws Exception {
		long defaultExpirationTime = TimeUnit.HOURS.toMillis(48);
		RollbackManager rm = RollbackUtils.getRollbackManager();

		try {
		InstallUtils.adoptShellPermissionIdentity(
		Manifest.permission.INSTALL_PACKAGES,
		Manifest.permission.DELETE_PACKAGES,
		Manifest.permission.TEST_MANAGE_ROLLBACKS,
		Manifest.permission.WRITE_DEVICE_CONFIG);

		Uninstall.packages(TestApp.A);
		assertThat(InstallUtils.getInstalledVersion(TestApp.A)).isEqualTo(-1);
		Install.single(TestApp.A1).commit();
		assertThat(InstallUtils.getInstalledVersion(TestApp.A)).isEqualTo(1);
		Install.single(TestApp.A2).setEnableRollback().commit();
		assertThat(InstallUtils.getInstalledVersion(TestApp.A)).isEqualTo(2);
		RollbackInfo rollback = waitForAvailableRollback(TestApp.A);
		assertThat(rollback).packagesContainsExactly(Rollback.from(TestApp.A2).to(TestApp.A1));

		// Change the lifetime to 0 which should expire rollbacks immediately
		DeviceConfig.setProperty(DeviceConfig.NAMESPACE_ROLLBACK_BOOT,
		RollbackManager.PROPERTY_ROLLBACK_LIFETIME_MILLIS,
		Long.toString(0), false /* makeDefault*/);

		// Keep polling until device config changes has happened (which might take more than
		// 5 sec depending how busy system_server is) and rollbacks have expired
		for (int i = 0; i < 30; ++i) {
		if (hasRollbackInclude(rm.getAvailableRollbacks(), TestApp.A)) {
		Thread.sleep(1000);
		}
		}
		rollback = getUniqueRollbackInfoForPackage(rm.getAvailableRollbacks(), TestApp.A);
		assertThat(rollback).isNull();
		} finally {
		DeviceConfig.setProperty(DeviceConfig.NAMESPACE_ROLLBACK_BOOT,
		RollbackManager.PROPERTY_ROLLBACK_LIFETIME_MILLIS,
		Long.toString(defaultExpirationTime), false /* makeDefault*/);
		InstallUtils.dropShellPermissionIdentity();
		}
		}

		/**
		* Test that changing time on device does not affect the duration of time that we keep
		* rollback available