Gateway method-name as header value

Question

I have a Gateway with a default-request-channel an multiple methods.

public interface IUserService {
 public void updateUserName(Long id, String username);
 public void updatePassword(Long id, String password);
 ...
}

and the following xml config

...
<gateway id="userService" service-interface="...IUserService"
         default-request-channel="dataRequestChannel" 
         default-reply-channel="dataResponseChannel" />
...

How can i get information about the method which is invoked ?

I know that it is possible to apply static header values but is that the only way ? Or am i totally wrong ?

Thanks

Gary Russell · Accepted Answer · 2013-10-19 18:48:15Z

1

We have an open JIRA issue for this feature; please vote it up.

Right now, the #method variable is available in expressions within specific method declarations

<int:gateway id="gw"
    service-interface="foo.Gateway"
    default-request-channel="input">
    <int:method name="sendAndReceive">
        <int:header name="gwMethod" expression="#method"/>
    </int:method>
</int:gateway>

But you would still have to declare each method.

Perhaps another, relatively simple enhancement would be to support wildcards in method names; something like...

<int:gateway id="gw"
    service-interface="foo.Gateway"
    default-request-channel="input">
    <int:method name="*">
        <int:header name="gwMethod" expression="#method"/>
    </int:method>
</int:gateway>

Where headers for method * would be added for all methods.

answered Oct 19, 2013 at 18:48

Gary Russell

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1 Comment

RicoZ Over a year ago

Ok, i will vote for it. I think the wildcard solution would be nice. Thanks

techie.brandon · Accepted Answer · 2014-02-21 16:55:22Z

As of 3.0.1 you can do the following to set headers across all methods accessed via the gateway (you can also manage the specific methods as usual).

I am showing how to set two header properties, transportType and methodType, one dynamic and one static:

<int:gateway id="gw" 
    service-interface="foo.async.Gateway" 
    default-request-channel="gateway-request-channel"
    default-reply-channel="gateway-response-channel">
    <int:default-header name="transportType" value="async-msg"/>
    <int:default-header name="methodType" expression="#gatewayMethod.name"/>
</int:gateway>

http://docs.spring.io/spring-integration/reference/html/messaging-endpoints-chapter.html#gateway-configuration-annotations

A bit late but the correct solution for those following this thread later.

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