| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.hadoop.ozone.upgrade; |
| |
| import static org.apache.hadoop.ozone.upgrade.InjectedUpgradeFinalizationExecutor.UpgradeTestInjectionPoints.AFTER_COMPLETE_FINALIZATION; |
| import static org.apache.hadoop.ozone.upgrade.InjectedUpgradeFinalizationExecutor.UpgradeTestInjectionPoints.AFTER_POST_FINALIZE_UPGRADE; |
| import static org.apache.hadoop.ozone.upgrade.InjectedUpgradeFinalizationExecutor.UpgradeTestInjectionPoints.AFTER_PRE_FINALIZE_UPGRADE; |
| import static org.apache.hadoop.ozone.upgrade.InjectedUpgradeFinalizationExecutor.UpgradeTestInjectionPoints.BEFORE_PRE_FINALIZE_UPGRADE; |
| import static org.apache.hadoop.ozone.upgrade.UpgradeFinalizer.Status.FINALIZATION_IN_PROGRESS; |
| import static org.apache.hadoop.ozone.upgrade.UpgradeFinalizer.Status.FINALIZATION_REQUIRED; |
| |
| import java.io.IOException; |
| import java.util.concurrent.Callable; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Failure injected extension of DefaultUpgradeFinalizationExecutor that |
| * can be used by Unit/Integration Tests. |
| */ |
| public class InjectedUpgradeFinalizationExecutor<T> extends |
| DefaultUpgradeFinalizationExecutor<T> { |
| static final Logger LOG = |
| LoggerFactory.getLogger(InjectedUpgradeFinalizationExecutor.class); |
| |
| private Callable<Boolean> injectTestFunction; |
| private UpgradeTestInjectionPoints testInjectionPoint; |
| |
| /** |
| * Enum to denote failure injection points in finalization. |
| */ |
| public enum UpgradeTestInjectionPoints { |
| BEFORE_PRE_FINALIZE_UPGRADE(1), |
| AFTER_PRE_FINALIZE_UPGRADE(2), |
| AFTER_COMPLETE_FINALIZATION(4), |
| AFTER_POST_FINALIZE_UPGRADE(5); |
| |
| private int val; |
| UpgradeTestInjectionPoints(int value) { |
| val = value; |
| } |
| |
| public int getValue() { |
| return val; |
| } |
| } |
| |
| static class UpgradeTestInjectionAbort extends Exception { |
| UpgradeTestInjectionAbort() { |
| } |
| } |
| |
| @Override |
| public void execute(T component, BasicUpgradeFinalizer finalizer) |
| throws IOException { |
| try { |
| injectTestFunctionAtThisPoint(BEFORE_PRE_FINALIZE_UPGRADE); |
| finalizer.emitStartingMsg(); |
| finalizer.getVersionManager() |
| .setUpgradeState(FINALIZATION_IN_PROGRESS); |
| |
| finalizer.preFinalizeUpgrade(component); |
| injectTestFunctionAtThisPoint(AFTER_PRE_FINALIZE_UPGRADE); |
| |
| finalizer.finalizeUpgrade(component); |
| injectTestFunctionAtThisPoint(AFTER_COMPLETE_FINALIZATION); |
| |
| finalizer.postFinalizeUpgrade(component); |
| injectTestFunctionAtThisPoint(AFTER_POST_FINALIZE_UPGRADE); |
| |
| finalizer.emitFinishedMsg(); |
| } catch (Exception e) { |
| LOG.warn("Upgrade Finalization failed with following Exception.", e); |
| if (finalizer.getVersionManager().needsFinalization()) { |
| finalizer.getVersionManager() |
| .setUpgradeState(FINALIZATION_REQUIRED); |
| } |
| } finally { |
| finalizer.markFinalizationDone(); |
| } |
| } |
| |
| /** |
| * Interface to inject arbitrary failures for stress testing. |
| * @param injectedTestFunction that will be called |
| * code execution reached injectTestFunctionAtThisPoint() location. |
| * @param pointIndex code execution point for a given thread. |
| */ |
| public void configureTestInjectionFunction( |
| UpgradeTestInjectionPoints pointIndex, |
| Callable<Boolean> injectedTestFunction) { |
| injectTestFunction = injectedTestFunction; |
| testInjectionPoint = pointIndex; |
| } |
| |
| /** |
| * Interface to inject error at a given point in an upgrade thread. |
| * @param pointIndex TestFunction Injection point in an upgrade thread. |
| * @return "true" if the calling thread should not continue with further |
| * upgrade processing, "false" otherwise. |
| */ |
| public void injectTestFunctionAtThisPoint( |
| UpgradeTestInjectionPoints pointIndex) throws Exception { |
| if ((testInjectionPoint != null) && |
| (pointIndex.getValue() == testInjectionPoint.getValue()) && |
| (injectTestFunction != null) && injectTestFunction.call()) { |
| throw new UpgradeTestInjectionAbort(); |
| } |
| return; |
| } |
| } |