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ManagerConfiguration.java
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ManagerConfiguration.java
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/*
* Copyright 2018-2022 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.batch.sample.remotechunking;
import java.util.Arrays;
import jakarta.jms.JMSException;
import org.apache.activemq.artemis.jms.client.ActiveMQConnectionFactory;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
import org.springframework.batch.core.step.tasklet.TaskletStep;
import org.springframework.batch.integration.chunk.RemoteChunkingManagerStepBuilderFactory;
import org.springframework.batch.integration.config.annotation.EnableBatchIntegration;
import org.springframework.batch.item.support.ListItemReader;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.PropertySource;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.channel.QueueChannel;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.dsl.IntegrationFlow;
import org.springframework.integration.jms.dsl.Jms;
/**
* This configuration class is for the manager side of the remote chunking sample. The
* manager step reads numbers from 1 to 6 and sends 2 chunks {1, 2, 3} and {4, 5, 6} to
* workers for processing and writing.
*
* @author Mahmoud Ben Hassine
*/
@Configuration
@EnableBatchProcessing
@EnableBatchIntegration
@EnableIntegration
@PropertySource("classpath:remote-chunking.properties")
@Import(DataSourceConfiguration.class)
public class ManagerConfiguration {
@Value("${broker.url}")
private String brokerUrl;
@Autowired
private JobBuilderFactory jobBuilderFactory;
@Autowired
private RemoteChunkingManagerStepBuilderFactory managerStepBuilderFactory;
@Bean
public ActiveMQConnectionFactory connectionFactory() throws JMSException {
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory();
connectionFactory.setBrokerURL(this.brokerUrl);
return connectionFactory;
}
/*
* Configure outbound flow (requests going to workers)
*/
@Bean
public DirectChannel requests() {
return new DirectChannel();
}
@Bean
public IntegrationFlow outboundFlow(ActiveMQConnectionFactory connectionFactory) {
return IntegrationFlow.from(requests()).handle(Jms.outboundAdapter(connectionFactory).destination("requests"))
.get();
}
/*
* Configure inbound flow (replies coming from workers)
*/
@Bean
public QueueChannel replies() {
return new QueueChannel();
}
@Bean
public IntegrationFlow inboundFlow(ActiveMQConnectionFactory connectionFactory) {
return IntegrationFlow.from(Jms.messageDrivenChannelAdapter(connectionFactory).destination("replies"))
.channel(replies()).get();
}
/*
* Configure manager step components
*/
@Bean
public ListItemReader<Integer> itemReader() {
return new ListItemReader<>(Arrays.asList(1, 2, 3, 4, 5, 6));
}
@Bean
public TaskletStep managerStep() {
return this.managerStepBuilderFactory.get("managerStep").<Integer, Integer>chunk(3).reader(itemReader())
.outputChannel(requests()).inputChannel(replies()).build();
}
@Bean
public Job remoteChunkingJob() {
return this.jobBuilderFactory.get("remoteChunkingJob").start(managerStep()).build();
}
}