| /* |
| * 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.cassandra.utils; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.net.SocketException; |
| |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.config.Config; |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.io.FSReadError; |
| |
| import static java.util.Arrays.asList; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| public class JVMStabilityInspectorTest |
| { |
| @BeforeClass |
| public static void initDD() |
| { |
| DatabaseDescriptor.daemonInitialization(); |
| } |
| |
| @Test |
| public void testKill() throws Exception |
| { |
| KillerForTests killerForTests = new KillerForTests(); |
| JVMStabilityInspector.Killer originalKiller = JVMStabilityInspector.replaceKiller(killerForTests); |
| |
| Config.DiskFailurePolicy oldPolicy = DatabaseDescriptor.getDiskFailurePolicy(); |
| Config.CommitFailurePolicy oldCommitPolicy = DatabaseDescriptor.getCommitFailurePolicy(); |
| try |
| { |
| killerForTests.reset(); |
| JVMStabilityInspector.inspectThrowable(new IOException()); |
| assertFalse(killerForTests.wasKilled()); |
| |
| DatabaseDescriptor.setDiskFailurePolicy(Config.DiskFailurePolicy.die); |
| killerForTests.reset(); |
| JVMStabilityInspector.inspectThrowable(new FSReadError(new IOException(), "blah")); |
| assertTrue(killerForTests.wasKilled()); |
| |
| DatabaseDescriptor.setCommitFailurePolicy(Config.CommitFailurePolicy.die); |
| killerForTests.reset(); |
| JVMStabilityInspector.inspectCommitLogThrowable(new Throwable()); |
| assertTrue(killerForTests.wasKilled()); |
| |
| killerForTests.reset(); |
| JVMStabilityInspector.inspectThrowable(new Exception(new IOException())); |
| assertFalse(killerForTests.wasKilled()); |
| } |
| finally |
| { |
| JVMStabilityInspector.replaceKiller(originalKiller); |
| DatabaseDescriptor.setDiskFailurePolicy(oldPolicy); |
| DatabaseDescriptor.setCommitFailurePolicy(oldCommitPolicy); |
| } |
| } |
| |
| @Test |
| public void testOutOfMemoryHandling() |
| { |
| for (Throwable oom : asList(new OutOfMemoryError(), new Exception(new OutOfMemoryError()))) |
| { |
| try |
| { |
| JVMStabilityInspector.inspectThrowable(oom); |
| fail("The JVMStabilityInspector should delegate the handling of OutOfMemoryErrors to the JVM"); |
| } |
| catch (OutOfMemoryError e) |
| { |
| assertTrue(true); |
| } |
| } |
| } |
| |
| @Test |
| public void fileHandleTest() |
| { |
| KillerForTests killerForTests = new KillerForTests(); |
| JVMStabilityInspector.Killer originalKiller = JVMStabilityInspector.replaceKiller(killerForTests); |
| |
| try |
| { |
| killerForTests.reset(); |
| JVMStabilityInspector.inspectThrowable(new SocketException("Should not fail")); |
| assertFalse(killerForTests.wasKilled()); |
| |
| killerForTests.reset(); |
| JVMStabilityInspector.inspectThrowable(new FileNotFoundException("Also should not fail")); |
| assertFalse(killerForTests.wasKilled()); |
| |
| killerForTests.reset(); |
| JVMStabilityInspector.inspectThrowable(new SocketException("Too many open files")); |
| assertTrue(killerForTests.wasKilled()); |
| |
| killerForTests.reset(); |
| JVMStabilityInspector.inspectCommitLogThrowable(new FileNotFoundException("Too many open files")); |
| assertTrue(killerForTests.wasKilled()); |
| } |
| finally |
| { |
| JVMStabilityInspector.replaceKiller(originalKiller); |
| } |
| } |
| } |