Spring batch with spring integration via http

[anshumania]

hi ..
i am trying to configure the http adapters b/w spring batch and integration. my app (spring-batch-admin) exposes a lightweight spring integration context which launches jobs. the configs are as follows

<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />

<int-http:inbound-channel-adapter 
id="batchHttpAdapter" 
name="/someJobs" 
message-converters="stringMessageConverter" 
channel="job-launches"	
supported-methods="POST" />

<bean id="stringMessageConverter"
class="org.springframework.http.converter.StringHttpMessageConverter" />	

<int:service-activator 
input-channel="job-launches" 
output-channel="batchJobRequests">
<bean	class="org.springframework.batch.admin.integration.StringToJobLaunchRequestAdapter">
   <property name="jobLocator" ref="jobRegistry" />
</bean>
</int:service-activator>

<int:service-activator input-channel="batchJobRequests">
<bean class="org.springframework.batch.integration.launch.JobLaunchingMessageHandler">			<constructor-arg ref="jobLauncher" /></bean>
</int:service-activator>

The job is launched asynchronously

	<task:executor id="asyncExecutor" pool-size="10"/>
	<bean id="jobLauncher"
	class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
		<property name="jobRepository" ref="jobRepository" />
		<property name="taskExecutor" ref="asyncExecutor"></property>
	</bean>

On the client side requests are sent as follows (from another app )

<int-http:outbound-gateway url="http://someurl:port/spring-batch-admin/someJobs" request-channel="someChannel" http-method="POST"></int-http:outbound-gateway>

How do i configure the client to receive the response which is the JobExecution ?

Thanks

[Dave Syer]

Probably all you need to do is use <http:inbound-gateway/> instead of <http:inbound-channel-adapter/> and provide an HttpMessageConverter that can convert the reply on the job-operator channel.

[anshumania]

yes thanks, i had figured i wud have needed a gateway. however i decided to use the already present json api in spring-batch-admin. Is there a better way of doing this invocation on the client side ?

String launchUrl = "http://url:port/spring-batch-admin/jobs/{jobName}.json?{jobParameters}";

Map<String, String> jobConfiguration = new HashMap<String, String>();
jobConfiguration.put("jobName", someJobNameAsString);
String jobParameters = // get a string formatted as jobParameters=param1=val1,param2=val2...
jobConfiguration.put("jobParameters", jobParameters);

RestTemplate template = new RestTemplate();
List<HttpMessageConverter<?>> converters = new ArrayList<HttpMessageConverter<?>>();
converters.add(new StringHttpMessageConverter());
template.setMessageConverters(converters);

String response = template.postForObject(launchURL,null,String.class , jobConfiguration);