/*
* Copyright 2012-2014 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.boot.autoconfigure.batch;
import javax.annotation.PostConstruct;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.batch.core.configuration.annotation.BatchConfigurer;
import org.springframework.batch.core.explore.JobExplorer;
import org.springframework.batch.core.explore.support.JobExplorerFactoryBean;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.batch.core.launch.support.SimpleJobLauncher;
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.repository.support.JobRepositoryFactoryBean;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.stereotype.Component;
import org.springframework.transaction.PlatformTransactionManager;
/**
* Basic {@link BatchConfigurer} implementation.
*
* @author Dave Syer
* @author Andy Wilkinson
*/
@Component
public class BasicBatchConfigurer implements BatchConfigurer {
private static Log logger = LogFactory.getLog(BasicBatchConfigurer.class);
private final DataSource dataSource;
private final EntityManagerFactory entityManagerFactory;
private PlatformTransactionManager transactionManager;
private JobRepository jobRepository;
private JobLauncher jobLauncher;
private JobExplorer jobExplorer;
/**
* Create a new {@link BasicBatchConfigurer} instance.
* @param dataSource the underlying data source
*/
public BasicBatchConfigurer(DataSource dataSource) {
this(dataSource, null);
}
/**
* Create a new {@link BasicBatchConfigurer} instance.
* @param dataSource the underlying data source
* @param entityManagerFactory the entity manager factory (or {@code null})
*/
public BasicBatchConfigurer(DataSource dataSource,
EntityManagerFactory entityManagerFactory) {
this.entityManagerFactory = entityManagerFactory;
this.dataSource = dataSource;
}
@Override
public JobRepository getJobRepository() {
return this.jobRepository;
}
@Override
public PlatformTransactionManager getTransactionManager() {
return this.transactionManager;
}
@Override
public JobLauncher getJobLauncher() {
return this.jobLauncher;
}
@Override
public JobExplorer getJobExplorer() throws Exception {
return this.jobExplorer;
}
@PostConstruct
public void initialize() {
try {
this.transactionManager = createTransactionManager();
this.jobRepository = createJobRepository();
this.jobLauncher = createJobLauncher();
this.jobExplorer = createJobExplorer();
}
catch (Exception ex) {
throw new IllegalStateException("Unable to initialize Spring Batch", ex);
}
}
private JobExplorer createJobExplorer() throws Exception {
JobExplorerFactoryBean jobExplorerFactoryBean = new JobExplorerFactoryBean();
jobExplorerFactoryBean.setDataSource(this.dataSource);
jobExplorerFactoryBean.afterPropertiesSet();
return jobExplorerFactoryBean.getObject();
}
private JobLauncher createJobLauncher() throws Exception {
SimpleJobLauncher jobLauncher = new SimpleJobLauncher();
jobLauncher.setJobRepository(getJobRepository());
jobLauncher.afterPropertiesSet();
return jobLauncher;
}
protected JobRepository createJobRepository() throws Exception {
JobRepositoryFactoryBean factory = new JobRepositoryFactoryBean();
factory.setDataSource(this.dataSource);
if (this.entityManagerFactory != null) {
logger.warn("JPA does not support custom isolation levels, so locks may not be taken when launching Jobs");
factory.setIsolationLevelForCreate("ISOLATION_DEFAULT");
}
factory.setTransactionManager(getTransactionManager());
factory.afterPropertiesSet();
return factory.getObject();
}
protected PlatformTransactionManager createTransactionManager() {
if (this.entityManagerFactory != null) {
return new JpaTransactionManager(this.entityManagerFactory);
}
return new DataSourceTransactionManager(this.dataSource);
}
}