| /* |
| * 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.geode.internal.cache; |
| |
| import static org.assertj.core.api.Assertions.assertThat; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.Future; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| |
| import org.apache.geode.DataSerializer; |
| import org.apache.geode.internal.HeapDataOutputStream; |
| import org.apache.geode.internal.cache.ha.ThreadIdentifier; |
| import org.apache.geode.internal.serialization.KnownVersion; |
| import org.apache.geode.internal.serialization.VersionedDataInputStream; |
| import org.apache.geode.test.junit.Repeat; |
| import org.apache.geode.test.junit.rules.ExecutorServiceRule; |
| import org.apache.geode.test.junit.rules.RepeatRule; |
| |
| public class EventIDTest { |
| @Rule |
| public ExecutorServiceRule executorService = new ExecutorServiceRule(); |
| |
| @Rule |
| public RepeatRule repeat = new RepeatRule(); |
| |
| @Test |
| public void emptyEventIdCanBeSerializedWithCurrentVersion() |
| throws IOException, ClassNotFoundException { |
| emptyEventIdCanBeSerialized(KnownVersion.CURRENT); |
| |
| } |
| |
| @Test |
| public void emptyEventIdCanBeSerializedToGeode100() throws IOException, ClassNotFoundException { |
| emptyEventIdCanBeSerialized(KnownVersion.GFE_90); |
| } |
| |
| private void emptyEventIdCanBeSerialized(KnownVersion version) |
| throws IOException, ClassNotFoundException { |
| EventID eventID = new EventID(); |
| HeapDataOutputStream out = new HeapDataOutputStream(version); |
| DataSerializer.writeObject(eventID, out); |
| |
| EventID result = DataSerializer.readObject( |
| new VersionedDataInputStream(new ByteArrayInputStream(out.toByteArray()), version)); |
| |
| assertThat(result.getMembershipID()).isEqualTo(eventID.getMembershipID()); |
| } |
| |
| @Test |
| @Repeat(10) |
| public void threadIDIsWrappedAround() throws Exception { |
| EventID.ThreadAndSequenceIDWrapper wrapper = new EventID.ThreadAndSequenceIDWrapper(); |
| long start = wrapper.threadID; |
| |
| int numberOfThreads = 100000; |
| |
| List<Future<Long>> futures = new ArrayList<>(); |
| for (int i = 0; i < numberOfThreads; i++) { |
| futures.add(executorService.submit(this::getThreadID)); |
| } |
| for (Future<Long> future : futures) { |
| future.get(); |
| } |
| long lastThreadID = executorService.submit(this::getThreadID).get(); |
| long expected = start + numberOfThreads + 1; |
| if (expected >= ThreadIdentifier.MAX_THREAD_PER_CLIENT) { |
| // wrap around ThreadIdentifier.MAX_THREAD_PER_CLIENT (1,000,000) and 1,000,000 |
| // is never used. |
| assertThat(lastThreadID).isEqualTo(expected - ThreadIdentifier.MAX_THREAD_PER_CLIENT + 1); |
| } else { |
| assertThat(lastThreadID).isEqualTo(expected); |
| } |
| } |
| |
| private long getThreadID() { |
| EventID.ThreadAndSequenceIDWrapper wrapper = new EventID.ThreadAndSequenceIDWrapper(); |
| return wrapper.threadID; |
| } |
| } |