Do not run the IntegrationFlow when spring batch remote chunking worker application starts

Question

i am new to spring integrarion and batch and i want to develop a remote chunking batch application with a master and worker . I used spring integration and RabbitMQ for message queue, the application runs fine but the worker itemProccessor start automaticaly, however i need to controle when to start it.

@Configuration
@EnableBatchProcessing
@EnableBatchIntegration
@EnableIntegration
public class WorkerConfig {


    @Autowired
    private RemoteChunkingWorkerBuilder<Integer, Integer> remoteChunkingWorkerBuilder;

    @Bean
    public DirectChannel requestsChannel() {
        return new DirectChannel();
    }

    @Bean
    public IntegrationFlow inboundFlow(ConnectionFactory connectionFactory) {
        return IntegrationFlows
                .from(Amqp.inboundAdapter(connectionFactory,"requests"))
                .channel(requestsChannel())
                .get();
    }

    @Bean
    public DirectChannel repliesChannel() {
        System.out.println("repliesChannel 3 ");
        return new DirectChannel();
    }

    @Bean
    public IntegrationFlow outboundFlow(AmqpTemplate amqpTemplate) {
        return IntegrationFlows
                .from(repliesChannel())
                .handle(Amqp.outboundAdapter(amqpTemplate).routingKey("replies"))
                .get();
    }

    @Bean
    public ItemProcessor<Integer, Integer> itemProcessor() {
       ....
    }

    @Bean
    public ItemWriter<Integer> itemWriter() {
       ...
    }

    @Bean
    public IntegrationFlow workerIntegrationFlow() {
        return this.remoteChunkingWorkerBuilder
                .itemProcessor(itemProcessor())
                .itemWriter(itemWriter())
                .inputChannel(requestsChannel())
                .outputChannel(repliesChannel())
                .build();
    }


}

So what i can do to manualy start the worker part ?

Answer 1

Give the adapter an id and set auto startup to false.

@Bean
public IntegrationFlow inboundFlow(ConnectionFactory connectionFactory) {
    return IntegrationFlows
            .from(Amqp.inboundAdapter(connectionFactory,"requests")
                .id("inbound")
                .autoStartup(false))
            .channel(requestsChannel())
            .get();
}

Then @Autowire the adapter and start it...

@Autowired
AmqpInboundChannelAdapter inbound;

...
    inbound.start();