Getting data elements from SOAP request - proxy

Question

My Request comes as below
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:hel="http://example.org/HelloService">
<soapenv:Header>
<sampler>Test</sampler>
</soapenv:Header>
<soapenv:Body>
<hel:LastName>
<lastName>Test</lastName>
</hel:LastName>
</soapenv:Body>
</soapenv:Envelope>
My flow which exposes my CXF:proxy-service is as below
<flow name="WS_In">
<http:inbound-endpoint address="http://localhost:8080/HelloService"
exchange-pattern="request-response">
<cxf:proxy-service wsdlLocation="classpath:helloservice.wsdl"
namespace="http://example.org/HelloService" service="ProxyService" >
<cxf:inInterceptors>
<spring:bean id="inLogger"
class="org.apache.cxf.interceptor.LoggingInInterceptor" />
<spring:bean id="msgInt" class="com.example.components.MessageInterceptor"/>
</cxf:inInterceptors>
</cxf:proxy-service>
</http:inbound-endpoint>
<component>
<spring-object bean="proxyService"></spring-object>
</component>
<echo-component></echo-component>
</flow>
But I am not able to get the elements in the soap header. I tried using interceprots with method like below
#Override
public void handleMessage(SoapMessage message) throws Fault {
System.out.println("The headers is " + message.getHeaders() );
}
But this is printing an emply Collection.
Please suggest how I can get this.

Answer 1

Try adding a custom-processor on your flow before the proxy-service
<flow name="WS_In">
<http:inbound-endpoint address="http://localhost:8080/HelloService"
exchange-pattern="request-response">
<custom-processor class="your.package.SoapHeaderObserver" />
<cxf:proxy-service wsdlLocation="classpath:helloservice.wsdl"
namespace="http://example.org/HelloService" service="ProxyService" >
<cxf:inInterceptors>
<spring:bean id="inLogger"
class="org.apache.cxf.interceptor.LoggingInInterceptor" />
<spring:bean id="msgInt" class="com.example.components.MessageInterceptor"/>
</cxf:inInterceptors>
</cxf:proxy-service>
</http:inbound-endpoint>
<component>
<spring-object bean="proxyService"></spring-object>
</component>
<echo-component></echo-component>
public class SoapHeaderObserver {
doSomething(SoapMessage message) {
//try to get header here
}
}
Also, your custom-processor can implement MessageProcessor or Callable. Take a look here on How to implement a Mule Message Observer?
And also, the framework have a lot of processors that you might use, instead of building your own.

Answer 2

I got the solution be adding a message processor before my proxy-service.
Given below is my processor.
public class SOAPHeaderExtractor implements MessageProcessor {
#Override
public MuleEvent process(MuleEvent event) {
try
{
MuleMessage inputMessage = event.getMessage();
SOAPMessage soapMsg = MessageFactory.newInstance().createMessage(null,
new java.io.ByteArrayInputStream(inputMessage.getPayloadAsString().getBytes()));
SOAPHeader header = soapMsg.getSOAPHeader();
System.out.println(header.getElementsByTagName("sampler").item(0).getTextContent() );
}
catch(Exception e){
e.printStackTrace();
}
return event ;
}
}
And the change to my flow.
<http:inbound-endpoint address="http://localhost:8080/HelloService"
exchange-pattern="request-response">
<custom-processor class="com.example.processors.SOAPHeaderExtractor" />
<cxf:proxy-service wsdlLocation="classpath:helloservice.wsdl"
namespace="http://example.org/HelloService" service="ProxyService" >
<cxf:inInterceptors >
<spring:bean id="inLogger" class="org.apache.cxf.interceptor.LoggingInInterceptor" />
</cxf:inInterceptors>
</cxf:proxy-service>
</http:inbound-endpoint>
Please do suggst if there is any better way.