TestMessageBusInjection.java

/*
 * Copyright 2014 the original author or authors.
 *
 * Licensed 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.springframework.xd.dirt.config;

import org.springframework.beans.factory.config.ConstructorArgumentValues;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.xd.dirt.integration.bus.AbstractTestMessageBus;
import org.springframework.xd.dirt.module.ModuleDeployer;
import org.springframework.xd.dirt.plugins.stream.StreamPlugin;
import org.springframework.xd.dirt.server.singlenode.SingleNodeApplication;

/**
 * Test class that helps injecting messageBus into {@link ModuleDeployer}'s common context via {@link TestStreamPlugin}.
 *
 * @author Ilayaperumal Gopinathan
 * @author David Turanski
 */
public class TestMessageBusInjection {

	private static final String STREAM_PLUGIN_BEAN_ID = "streamPlugin";

	public static void injectMessageBus(SingleNodeApplication application, AbstractTestMessageBus<?> testMessageBus) {
		ConfigurableApplicationContext pluginContext = application.pluginContext();
		RootBeanDefinition beanDefinition = new RootBeanDefinition(StreamPlugin.class);
		ConstructorArgumentValues constructorArgumentValues = new ConstructorArgumentValues();
		constructorArgumentValues.addIndexedArgumentValue(0, testMessageBus);
		beanDefinition.setConstructorArgumentValues(constructorArgumentValues);
		BeanDefinitionRegistry registry = (BeanDefinitionRegistry) pluginContext.getBeanFactory();
		registry.removeBeanDefinition(STREAM_PLUGIN_BEAN_ID);
		registry.registerBeanDefinition(STREAM_PLUGIN_BEAN_ID, beanDefinition);
		ModuleDeployer moduleDeployer = application.containerContext().getBean(ModuleDeployer.class);
		moduleDeployer.afterPropertiesSet();
	}

}