/
BasicBatchConfigurer.java
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/
BasicBatchConfigurer.java
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/*
* Copyright 2012-2020 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
*
* https://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.sql.DataSource;
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.beans.factory.InitializingBean;
import org.springframework.boot.autoconfigure.transaction.TransactionManagerCustomizers;
import org.springframework.boot.context.properties.PropertyMapper;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
/**
* Basic {@link BatchConfigurer} implementation.
*
* @author Dave Syer
* @author Andy Wilkinson
* @author Kazuki Shimizu
* @author Stephane Nicoll
* @since 1.0.0
*/
public class BasicBatchConfigurer implements BatchConfigurer, InitializingBean {
private final BatchProperties properties;
private final DataSource dataSource;
private PlatformTransactionManager transactionManager;
private final TransactionManagerCustomizers transactionManagerCustomizers;
private JobRepository jobRepository;
private JobLauncher jobLauncher;
private JobExplorer jobExplorer;
/**
* Create a new {@link BasicBatchConfigurer} instance.
* @param properties the batch properties
* @param dataSource the underlying data source
* @param transactionManagerCustomizers transaction manager customizers (or
* {@code null})
*/
protected BasicBatchConfigurer(BatchProperties properties, DataSource dataSource,
TransactionManagerCustomizers transactionManagerCustomizers) {
this.properties = properties;
this.dataSource = dataSource;
this.transactionManagerCustomizers = transactionManagerCustomizers;
}
@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;
}
@Override
public void afterPropertiesSet() {
initialize();
}
public void initialize() {
try {
this.transactionManager = buildTransactionManager();
this.jobRepository = createJobRepository();
this.jobLauncher = createJobLauncher();
this.jobExplorer = createJobExplorer();
}
catch (Exception ex) {
throw new IllegalStateException("Unable to initialize Spring Batch", ex);
}
}
protected JobExplorer createJobExplorer() throws Exception {
PropertyMapper map = PropertyMapper.get();
JobExplorerFactoryBean factory = new JobExplorerFactoryBean();
factory.setDataSource(this.dataSource);
map.from(this.properties::getTablePrefix).whenHasText().to(factory::setTablePrefix);
factory.afterPropertiesSet();
return factory.getObject();
}
protected JobLauncher createJobLauncher() throws Exception {
SimpleJobLauncher jobLauncher = new SimpleJobLauncher();
jobLauncher.setJobRepository(getJobRepository());
jobLauncher.afterPropertiesSet();
return jobLauncher;
}
protected JobRepository createJobRepository() throws Exception {
JobRepositoryFactoryBean factory = new JobRepositoryFactoryBean();
PropertyMapper map = PropertyMapper.get();
map.from(this.dataSource).to(factory::setDataSource);
map.from(this::determineIsolationLevel).whenNonNull().to(factory::setIsolationLevelForCreate);
map.from(this.properties::getTablePrefix).whenHasText().to(factory::setTablePrefix);
map.from(this::getTransactionManager).to(factory::setTransactionManager);
factory.afterPropertiesSet();
return factory.getObject();
}
/**
* Determine the isolation level for create* operation of the {@link JobRepository}.
* @return the isolation level or {@code null} to use the default
*/
protected String determineIsolationLevel() {
return null;
}
protected PlatformTransactionManager createTransactionManager() {
return new DataSourceTransactionManager(this.dataSource);
}
private PlatformTransactionManager buildTransactionManager() {
PlatformTransactionManager transactionManager = createTransactionManager();
if (this.transactionManagerCustomizers != null) {
this.transactionManagerCustomizers.customize(transactionManager);
}
return transactionManager;
}
}