INTSAMPLES-19 Add Router Example
This commit is contained in:
Gary Russell
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/*
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* Copyright 2002-2011 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.integration.samples.testing.router;
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import org.springframework.integration.annotation.Router;
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/**
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* @author Gary Russell
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* @since 2.0.2
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*
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*/
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public class PetRouter {
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@Router
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public String route(String input) {
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if (input.toLowerCase().contains("cat")) {
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return "felineChannel";
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}
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if (input.toLowerCase().contains("dog")) {
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return "canineChannel";
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}
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return "unknownPetTypeChannel";
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}
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}
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<?xml version="1.0" encoding="UTF-8"?>
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<beans:beans xmlns="http://www.springframework.org/schema/integration"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:beans="http://www.springframework.org/schema/beans"
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xsi:schemaLocation="http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd
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http://www.springframework.org/schema/integration
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http://www.springframework.org/schema/integration/spring-integration.xsd">
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<channel id="inputChannel"/>
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<router input-channel="inputChannel">
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<beans:bean class="org.springframework.integration.samples.testing.router.PetRouter"/>
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</router>
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<channel id="felineChannel"/>
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<channel id="canineChannel"/>
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<channel id="unknownPetTypeChannel"/>
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</beans:beans>
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<?xml version="1.0" encoding="UTF-8"?>
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<beans:beans xmlns="http://www.springframework.org/schema/integration"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns:beans="http://www.springframework.org/schema/beans"
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xsi:schemaLocation="http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd
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http://www.springframework.org/schema/integration
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http://www.springframework.org/schema/integration/spring-integration.xsd">
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<beans:import resource="classpath:META-INF/spring/integration/05-router/integration-context.xml" />
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<bridge input-channel="felineChannel"
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output-channel="testFelineChannel"/>
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<bridge input-channel="canineChannel"
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output-channel="testCanineChannel"/>
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<bridge input-channel="unknownPetTypeChannel"
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output-channel="testUnknownPetTypeChannel"/>
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<channel id="testFelineChannel">
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<queue/>
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</channel>
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<channel id="testCanineChannel">
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<queue/>
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</channel>
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<channel id="testUnknownPetTypeChannel">
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<queue/>
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</channel>
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</beans:beans>
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@@ -0,0 +1,107 @@
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/*
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* Copyright 2002-2011 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.integration.samples.testing.router;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNotNull;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.integration.Message;
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import org.springframework.integration.MessageChannel;
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import org.springframework.integration.channel.QueueChannel;
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import org.springframework.integration.support.MessageBuilder;
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import org.springframework.test.context.ContextConfiguration;
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import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
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/**
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*
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* Shows how to test a router; the router is configured to route to direct
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* channel names. The configuration would
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* be a fragment of a larger flow. Since the output channels are direct,
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* they have no subscribers outside the context of a larger flow. So,
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* in this test case, we bridge them to {@link QueueChannel}s to
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* facilitate easy testing.
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*
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* @author Gary Russell
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* @since 2.0.2
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*/
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@ContextConfiguration // default context name is <ClassName>-context.xml
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@RunWith(SpringJUnit4ClassRunner.class)
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public class PetRouterTests {
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@Autowired
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MessageChannel inputChannel;
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@Autowired
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QueueChannel testFelineChannel;
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@Autowired
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QueueChannel testCanineChannel;
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@Autowired
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QueueChannel testUnknownPetTypeChannel;
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@Test
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public void unitTestClassCat() {
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String payload = "CAT:Fluffy";
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assertEquals("felineChannel", new PetRouter().route(payload));
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}
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@Test
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public void unitTestClassDog() {
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String payload = "DOG:Fido";
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assertEquals("canineChannel", new PetRouter().route(payload));
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}
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@Test
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public void unitTestClassLizard() {
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String payload = "LIZARD:Scaly";
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assertEquals("unknownPetTypeChannel", new PetRouter().route(payload));
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}
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@Test
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public void testCat() {
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String payload = "CAT:Fluffy";
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Message<String> message = MessageBuilder.withPayload(payload).build();
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inputChannel.send(message);
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Message<?> outMessage = testFelineChannel.receive(0);
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assertNotNull("Expected an output message", outMessage);
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assertEquals(payload, outMessage.getPayload());
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}
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@Test
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public void testDog() {
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String payload = "DOG:Fido";
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Message<String> message = MessageBuilder.withPayload(payload).build();
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inputChannel.send(message);
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Message<?> outMessage = testCanineChannel.receive(0);
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assertNotNull("Expected an output message", outMessage);
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assertEquals(payload, outMessage.getPayload());
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}
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@Test
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public void testLizard() {
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String payload = "LIZARD:Scaly";
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Message<String> message = MessageBuilder.withPayload(payload).build();
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inputChannel.send(message);
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Message<?> outMessage = testUnknownPetTypeChannel.receive(0);
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assertNotNull("Expected an output message", outMessage);
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assertEquals(payload, outMessage.getPayload());
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}
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}
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