ContainerConfiguration.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.server.container;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.actuate.autoconfigure.AuditAutoConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.batch.BatchAutoConfiguration;
import org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration;
import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;
import org.springframework.boot.autoconfigure.mongo.MongoDataAutoConfiguration;
import org.springframework.boot.autoconfigure.solr.SolrAutoConfiguration;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.event.SourceFilteringListener;
import org.springframework.xd.dirt.cluster.ContainerAttributes;
import org.springframework.xd.dirt.container.store.ContainerRepository;
import org.springframework.xd.dirt.job.JobFactory;
import org.springframework.xd.dirt.module.ModuleDeployer;
import org.springframework.xd.dirt.module.ModuleRegistry;
import org.springframework.xd.dirt.stream.JobDefinitionRepository;
import org.springframework.xd.dirt.stream.StreamDefinitionRepository;
import org.springframework.xd.dirt.stream.StreamFactory;
import org.springframework.xd.dirt.util.XdConfigLoggingInitializer;
import org.springframework.xd.dirt.zookeeper.ZooKeeperConnection;
import org.springframework.xd.dirt.zookeeper.ZooKeeperConnectionConfigurer;
import org.springframework.xd.module.core.ModuleFactory;
import org.springframework.xd.module.options.ModuleOptionsMetadataResolver;

/**
 * Container Application Context
 *
 * @author David Turanski
 * @author Ilayaperumal Gopinathan
 * @author Marius Bogoevici
 */
@Configuration
@EnableAutoConfiguration(exclude = {BatchAutoConfiguration.class, JmxAutoConfiguration.class,
		AuditAutoConfiguration.class, MongoAutoConfiguration.class, MongoDataAutoConfiguration.class,
		SolrAutoConfiguration.class })
public class ContainerConfiguration {

	/*
	 * An optional bean to configure the ZooKeeperConnection. XD by default does not provide this bean but it may be
	 * added via an extension. This is also effected by the boolean property value ${zk.client.connection.configured}
	 * which if set, defers the start of the ZooKeeper connection until now.
	 */
	@Autowired(required = false)
	ZooKeeperConnectionConfigurer zooKeeperConnectionConfigurer;

	@Autowired
	private ContainerAttributes containerAttributes;

	@Autowired
	private ContainerRepository containerRepository;

	@Autowired
	private StreamDefinitionRepository streamDefinitionRepository;

	@Autowired
	private JobDefinitionRepository jobDefinitionRepository;

	@Autowired
	private ModuleRegistry moduleRegistry;

	@Autowired
	private ModuleOptionsMetadataResolver moduleOptionsMetadataResolver;

	@Autowired
	private ModuleDeployer moduleDeployer;

	@Autowired
	private ZooKeeperConnection zooKeeperConnection;

	@Bean
	public ApplicationListener<?> xdInitializer(ApplicationContext context) {
		XdConfigLoggingInitializer delegate = new XdConfigLoggingInitializer(true);
		delegate.setEnvironment(context.getEnvironment());
		delegate.setContainerAttributes(containerAttributes);
		return new SourceFilteringListener(context, delegate);
	}

	@Bean
	public ModuleFactory moduleFactory() {
		return new ModuleFactory(moduleOptionsMetadataResolver);
	}

	@Bean
	/*(name = "moduleDeployer")*/
	public ModuleDeployer moduleDeployer() {
		return new ModuleDeployer(moduleFactory());
	}

	@Bean
	public ContainerRegistrar containerRegistrar() {
		initializeZooKeeperConnection();
		return new ContainerRegistrar(zooKeeperConnection, containerAttributes,
				containerRepository, deploymentListener());
	}

	@Bean
	public DeploymentListener deploymentListener() {
		initializeZooKeeperConnection();
		StreamFactory streamFactory = new StreamFactory(streamDefinitionRepository, moduleRegistry,
				moduleOptionsMetadataResolver);

		JobFactory jobFactory = new JobFactory(jobDefinitionRepository, moduleRegistry,
				moduleOptionsMetadataResolver);
		return new DeploymentListener(zooKeeperConnection, moduleDeployer, containerAttributes, jobFactory,
				streamFactory);
	}

	private void initializeZooKeeperConnection() {
		if (zooKeeperConnectionConfigurer != null) {
			zooKeeperConnectionConfigurer.configureZooKeeperConnection(zooKeeperConnection);
			zooKeeperConnection.start();
		}
	}

}