| /** |
| * 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.camel.component.jgroups; |
| |
| import static java.lang.String.format; |
| import static java.util.UUID.randomUUID; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.impl.DefaultCamelContext; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import static org.apache.camel.component.jgroups.JGroupsFilters.dropNonCoordinatorViews; |
| |
| |
| public class JGroupsClusterTest extends Assert { |
| |
| // Tested state |
| |
| String master; |
| |
| int nominationCount; |
| |
| // Routing fixtures |
| |
| String jgroupsEndpoint = format("jgroups:%s?enableViewMessages=true", randomUUID()); |
| |
| DefaultCamelContext firstCamelContext; |
| |
| DefaultCamelContext secondCamelContext; |
| |
| class Builder extends RouteBuilder { |
| |
| @Override |
| public void configure() throws Exception { |
| from(jgroupsEndpoint). |
| filter(dropNonCoordinatorViews()). |
| process(new Processor() { |
| @Override |
| public void process(Exchange exchange) throws Exception { |
| String camelContextName = exchange.getContext().getName(); |
| if (!camelContextName.equals(master)) { |
| master = camelContextName; |
| nominationCount++; |
| } |
| } |
| }); |
| } |
| } |
| |
| @Before |
| public void setUp() throws Exception { |
| firstCamelContext = new DefaultCamelContext(); |
| firstCamelContext.setName("firstNode"); |
| firstCamelContext.addRoutes(new Builder()); |
| |
| secondCamelContext = new DefaultCamelContext(); |
| secondCamelContext.setName("secondNode"); |
| secondCamelContext.addRoutes(new Builder()); |
| } |
| |
| // Tests |
| |
| @Test |
| public void shouldElectSecondNode() throws Exception { |
| // When |
| firstCamelContext.start(); |
| String firstMaster = master; |
| secondCamelContext.start(); |
| firstCamelContext.stop(); |
| String secondMaster = master; |
| secondCamelContext.stop(); |
| |
| // Then |
| assertEquals(firstCamelContext.getName(), firstMaster); |
| assertEquals(secondCamelContext.getName(), secondMaster); |
| assertEquals(2, nominationCount); |
| } |
| |
| @Test |
| public void shouldKeepMaster() throws Exception { |
| // When |
| firstCamelContext.start(); |
| String firstMaster = master; |
| secondCamelContext.start(); |
| secondCamelContext.stop(); |
| String secondMaster = master; |
| firstCamelContext.stop(); |
| |
| // Then |
| assertEquals(firstCamelContext.getName(), firstMaster); |
| assertEquals(firstCamelContext.getName(), secondMaster); |
| assertEquals(1, nominationCount); |
| } |
| |
| @Test |
| public void shouldElectSecondNodeAndReturnToFirst() throws Exception { |
| // When |
| firstCamelContext.start(); |
| String firstMaster = master; |
| secondCamelContext.start(); |
| firstCamelContext.stop(); |
| String secondMaster = master; |
| firstCamelContext.start(); |
| String masterAfterRestartOfFirstNode = master; |
| secondCamelContext.stop(); |
| String finalMaster = master; |
| firstCamelContext.stop(); |
| |
| // Then |
| assertEquals(firstCamelContext.getName(), firstMaster); |
| assertEquals(secondCamelContext.getName(), secondMaster); |
| assertEquals(secondCamelContext.getName(), masterAfterRestartOfFirstNode); |
| assertEquals(firstCamelContext.getName(), finalMaster); |
| assertEquals(3, nominationCount); |
| } |
| |
| } |