INT-28 Initial commit of (new in 2.0) MessagePublishingInterceptor. An AOP interceptor that uses EL to construct a Message payload and then publishes it.
This commit is contained in:
Mark Fisher
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/*
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* Copyright 2002-2009 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.aop;
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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 java.lang.reflect.Method;
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import java.util.Collections;
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import org.junit.Before;
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import org.junit.Test;
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import org.springframework.aop.framework.ProxyFactory;
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import org.springframework.integration.channel.MapBasedChannelResolver;
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import org.springframework.integration.channel.QueueChannel;
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import org.springframework.integration.core.Message;
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/**
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* @author Mark Fisher
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* @since 2.0
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*/
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public class MessagePublishingInterceptorTests {
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private final ExpressionSource source = new TestExpressionSource();
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private final MapBasedChannelResolver channelResolver = new MapBasedChannelResolver();
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private final QueueChannel testChannel = new QueueChannel();
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@Before
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public void setup() {
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channelResolver.setChannelMap(Collections.singletonMap("c", testChannel));
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}
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@Test
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public void returnValue() {
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MessagePublishingInterceptor interceptor = new MessagePublishingInterceptor(source);
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interceptor.setChannelResolver(channelResolver);
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ProxyFactory pf = new ProxyFactory(new TestBeanImpl());
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pf.addAdvice(interceptor);
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TestBean proxy = (TestBean) pf.getProxy();
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proxy.test();
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Message<?> message = testChannel.receive(0);
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assertNotNull(message);
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assertEquals("foo", message.getPayload());
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}
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static interface TestBean {
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String test();
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}
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static class TestBeanImpl implements TestBean {
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public String test() {
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return "foo";
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}
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}
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private static class TestExpressionSource implements ExpressionSource {
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public String getArgumentMapName(Method method) {
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return "m";
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}
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public String[] getArgumentNames(Method method) {
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return new String[] { "a1", "a2" };
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}
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public String getChannelName(Method method) {
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return "c";
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}
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public String getExceptionName(Method method) {
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return "x";
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}
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public String getExpressionString(Method method) {
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return "#r";
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}
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public String getReturnValueName(Method method) {
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return "r";
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}
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}
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}
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@@ -0,0 +1,90 @@
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/*
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* Copyright 2002-2009 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.aop;
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import static org.junit.Assert.assertEquals;
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import java.lang.reflect.Method;
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import org.junit.Test;
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/**
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* @author Mark Fisher
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* @since 2.0
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*/
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public class MethodAnnotationExpressionSourceTests {
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private final MethodAnnotationExpressionSource source = new MethodAnnotationExpressionSource();
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@Test
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public void defaultBindings() {
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Method method = getMethod("methodWithExpressionAnnotationOnly", String.class, int.class);
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String expressionString = source.getExpressionString(method);
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assertEquals("testExpression1", expressionString);
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assertEquals(2, source.getArgumentNames(method).length);
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assertEquals("arg1", source.getArgumentNames(method)[0]);
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assertEquals("arg2", source.getArgumentNames(method)[1]);
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assertEquals(ExpressionSource.DEFAULT_ARGUMENT_MAP_NAME, source.getArgumentMapName(method));
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assertEquals(ExpressionSource.DEFAULT_EXCEPTION_NAME, source.getExceptionName(method));
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assertEquals(ExpressionSource.DEFAULT_RETURN_VALUE_NAME, source.getReturnValueName(method));
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}
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@Test
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public void annotationBindings() {
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Method method = getMethod("methodWithExpressionBinding", String.class, int.class);
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String expressionString = source.getExpressionString(method);
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assertEquals("testExpression2", expressionString);
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assertEquals(2, source.getArgumentNames(method).length);
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assertEquals("s", source.getArgumentNames(method)[0]);
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assertEquals("i", source.getArgumentNames(method)[1]);
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assertEquals("argz", source.getArgumentMapName(method));
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assertEquals("x", source.getExceptionName(method));
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assertEquals("result", source.getReturnValueName(method));
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}
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@Test
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public void channelName() {
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Method method = getMethod("methodWithChannelAndReturnAsPayload");
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String channelName = source.getChannelName(method);
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assertEquals("foo", channelName);
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}
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private static Method getMethod(String name, Class<?> ... params) {
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try {
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return MethodAnnotationExpressionSourceTests.class.getMethod(name, params);
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}
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catch (Exception e) {
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throw new RuntimeException("failed to resolve method", e);
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}
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}
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@Publisher("testExpression1")
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public void methodWithExpressionAnnotationOnly(String arg1, int arg2) {
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}
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@Publisher(value="#return", channel="foo")
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public void methodWithChannelAndReturnAsPayload() {
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}
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@Publisher("testExpression2")
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@ExpressionBinding(argNames="s, i", argumentMapName="argz", exceptionName="x", returnValueName="result")
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public void methodWithExpressionBinding(String arg1, int arg2) {
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}
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}
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@@ -0,0 +1,76 @@
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/*
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* Copyright 2002-2009 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.aop;
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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.Before;
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import org.junit.Test;
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import org.springframework.aop.framework.ProxyFactory;
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import org.springframework.context.support.StaticApplicationContext;
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import org.springframework.integration.channel.QueueChannel;
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import org.springframework.integration.core.Message;
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/**
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* @author Mark Fisher
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* @since 2.0
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*/
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public class PublisherAnnotationAdvisorTests {
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private final StaticApplicationContext context = new StaticApplicationContext();
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@Before
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public void setup() {
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context.registerSingleton("testChannel", QueueChannel.class);
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}
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@Test
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public void returnValue() {
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PublisherAnnotationAdvisor advisor = new PublisherAnnotationAdvisor();
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advisor.setBeanFactory(context);
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QueueChannel testChannel = context.getBean("testChannel", QueueChannel.class);
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advisor.setDefaultChannel(testChannel);
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ProxyFactory pf = new ProxyFactory(new TestBeanImpl());
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pf.addAdvisor(advisor);
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TestBean proxy = (TestBean) pf.getProxy();
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proxy.test();
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Message<?> message = testChannel.receive(0);
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assertNotNull(message);
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assertEquals("foo", message.getPayload());
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}
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static interface TestBean {
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String test();
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}
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static class TestBeanImpl implements TestBean {
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@Publisher("#return")
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public String test() {
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return "foo";
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}
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}
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}
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