How and where to invoke HeaderValueRouter and HeaderEnricher for jms or activemq with spring-integration - spring

Question

In my project ,we use spring-integration to implement the queue. The configuration for Header-Value-Router is in the xml as below:
<header-value-router input-channel="jmsUVMasterMessageChannel"
header-name="METADATA_TYPE" default-output-channel="nullChannel"
resolution-required="false">
<mapping value="ASSEMBLY" channel="downloadImageToS3Channel" />
<mapping value="THIRDPARTY" channel="invokeUVMasterAPIChannel" />
</header-value-router>
<header-enricher input-channel="JuiceVendorMessageChannel"
output-channel="JuiceHeaderEnricherChannel">
<header name="sourceName" value="JUICE" />
</header-enricher>
And here is the gateway config:
I wanna know how to implement this config in java code? I searched google and found following code:
#Bean
public HeaderValueRouter headerRouter(String gatewayPrefix) {
HeaderValueRouter router = new HeaderValueRouter("METADATA_TYPE");
router.setChannelMapping("ASSEMBLY", "downloadImageToS3Channel");
router.setChannelMapping("THIRDPARTY", "invokeUVMasterAPIChannel");
router.setDefaultOutputChannel(new NullChannel());
router.setResolutionRequired(false);
return router;
}
#Bean
#Transformer(inputChannel="sdiVenderMessageChannel", outputChannel="sdiHeaderEnricherChannel")
public HeaderEnricher enrichHeaders() {
Map<String, HeaderValueMessageProcessor<?>> headersToAdd = new HashMap<String, HeaderValueMessageProcessor<?>>();
// TODO
//headersToAdd.put("sourceName",new StaticHeaderValueMessageProcessor<String>("SDI"));
headersToAdd.put("sourceName", null);
HeaderEnricher enricher = new HeaderEnricher(headersToAdd);
if(logger.isDebugEnabled()){
logger.debug("HeaderEnricher bean initial!");
}
return enricher;
}
But here are my questions:
1) how to config the 'input-channel' in java config?
2) Where should I invoke this function? When I start the application , the code doesn't run into this function. I know the headerValueRouter is used to dispatcher the message from input-channel to the output-channel, but what's the exact place that I can invoke this router? In the ConnectionFactory or ListenerContainer?
And here is the gateway I defined:
public void registerDynamicInboundGateway(DefaultListableBeanFactory beanFactory) {
this.beanFactory = beanFactory;
BeanDefinitionBuilder builder = BeanDefinitionBuilder
.genericBeanDefinition("org.springframework.integration.jms.JmsMessageDrivenEndpoint");
String jndiFactoryName = this.registerJndiObjectFactoryBean(gatewayPrefix, jmsQueueValue);
this.destination = jndiFactoryName;
String containerBeanName = this.registerMessageListenerContainer();
String listenerBeanName = this.registerMessageListener();
builder.addConstructorArgReference(containerBeanName);
builder.addConstructorArgReference(listenerBeanName);
setValueIfAttributeDefined(builder, autoStartup, "auto-startup");
String beanName = null;
if(gatewayPrefix.equals(HCC_GATEWAY_PREFIX)){
beanName = gatewayPrefix + DynamicInboundGateway.HCC_GATEWAY_SUFIX;
} else if (gatewayPrefix.equals(UVMASTER_GATEWAY_PREFIX)) {
beanName = gatewayPrefix + DynamicInboundGateway.UVMASTER_GATEWAY_PREFIX;
} else {
beanName = gatewayPrefix + DynamicInboundGateway.GATEWAY_SUFIX;
}
this.beanFactory.registerBeanDefinition(
beanName, builder.getBeanDefinition());
}
I felt confused and didn't found any sample code for this.
Thanks a lot!
When I define the HeaderEnricher according to the sample code in the spring-integration website like below:
#Bean
#Transformer(inputChannel="sdiVenderMessageChannel", outputChannel="sdiHeaderEnricherChannel")
public HeaderEnricher enrichHeaders() {
Map<String, HeaderValueMessageProcessor<?>> headersToAdd = new HashMap<String, HeaderValueMessageProcessor<?>>();
// TODO
headersToAdd.put("sourceName",new StaticHeaderValueMessageProcessor<String>("SDI"));
//headersToAdd.put("sourceName", null);
HeaderEnricher enricher = new HeaderEnricher(headersToAdd);
if(logger.isDebugEnabled()){
logger.debug("HeaderEnricher bean initial!");
}
return enricher;
}
And this occured some error:
StaticHeaderValueMessageProcessor cannot be resolved to a type
But I've import all the required packages with maven. I can not figure out why.

Answer 1

Hopefully, this simple Spring Boot app will make things clear...
#SpringBootApplication
public class So40585409Application {
public static void main(String[] args) throws Exception {
ConfigurableApplicationContext context = SpringApplication.run(So40585409Application.class, args);
JmsTemplate template = context.getBean(JmsTemplate.class);
template.convertAndSend("foo", "message1", m -> {
m.setStringProperty("foo", "bar");
return m;
});
template.convertAndSend("foo", "message2", m -> {
m.setStringProperty("foo", "baz");
return m;
});
Thread.sleep(5000);
context.close();
}
#Bean
public JmsMessageDrivenEndpoint inbound(ConnectionFactory jmsConnectionFactory) {
return new JmsMessageDrivenEndpoint(container(jmsConnectionFactory), listener());
}
#Bean
public DefaultMessageListenerContainer container(ConnectionFactory jmsConnectionFactory) {
DefaultMessageListenerContainer container = new DefaultMessageListenerContainer();
container.setConnectionFactory(jmsConnectionFactory);
container.setDestinationName("foo");
return container;
}
#Bean
public ChannelPublishingJmsMessageListener listener() {
ChannelPublishingJmsMessageListener listener = new ChannelPublishingJmsMessageListener();
listener.setRequestChannelName("toRouter");
return listener;
}
#Bean
#Router(inputChannel="toRouter")
public HeaderValueRouter router() {
HeaderValueRouter router = new HeaderValueRouter("foo");
router.setChannelMapping("bar", "barChannel");
router.setChannelMapping("baz", "bazChannel");
return router;
}
#ServiceActivator(inputChannel = "barChannel")
public void bar(String in) {
System.out.println("Received via barChannel: " + in);
}
#ServiceActivator(inputChannel = "bazChannel")
public void baz(String in) {
System.out.println("Received via bazChannel: " + in);
}
}
Result:
2016-11-14 09:17:56.798 INFO 65082 --- [ main] com.example.So40585409Application : Started So40585409Application in 8.842 seconds (JVM running for 10.819)
Received via barChannel: message1
Received via bazChannel: message2
2016-11-14 09:18:02.038 INFO 65082 --- [ main] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext#2b546384: startup date [Mon Nov 14 09:17:49 EST 2016]; root of context hierarchy
EDIT - Header Enricher
I just added your bean with no problems...
#ServiceActivator(inputChannel = "barChannel2")
public void bar(String in, #Header("sourceName") String sourceName) {
System.out.println("Received via barChannel: " + in + " " + sourceName);
}
#ServiceActivator(inputChannel = "bazChannel")
public void baz(String in) {
System.out.println("Received via bazChannel: " + in);
}
#Bean
#Transformer(inputChannel = "barChannel", outputChannel = "barChannel2")
public HeaderEnricher enrichHeaders() {
Map<String, HeaderValueMessageProcessor<?>> headersToAdd = new HashMap<String, HeaderValueMessageProcessor<?>>();
headersToAdd.put("sourceName", new StaticHeaderValueMessageProcessor<String>("SDI"));
HeaderEnricher enricher = new HeaderEnricher(headersToAdd);
return enricher;
}
Result:
2016-11-15 09:00:48.383 INFO 50137 --- [ main] com.example.So40585409Application : Started So40585409Application in 1.814 seconds (JVM running for 2.528)
Received via barChannel: message1 SDI
Received via bazChannel: message2
2016-11-15 09:00:53.424 INFO 50137 --- [ main] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext#2c34f934: startup date [Tue Nov 15 09:00:46 EST 2016]; root of context hierarchy