SOAP Web-Service

[steffi.s.]

Hi,

last week I spoke with an assistant of RedHat about switchyard. At the moment we are in the process of testing whether "switchyard" is the ideal tool for us.

I will bind a reference with SOAP.

The application starts by XML Data. Inside of Camel, I split the data depending on a certain parameter.

The result is a number. After this the number will be transported to a switchyard Reference. Inside the switchyard Service I will call a SOAP Web-Service and invoke a special method. How can I invoke this method?

The answer of the assistant was: It is not possible in Switchyard and I have to implement the code in a bean component.

I also analysed other solutions of other companies. Other solutions are able to do this.

I hope you can help me with my problem.

Best regards.

[kcbabo]

You can definitely invoke SOAP-based services through a reference and it's also possible to specify the operation within the service to invoke.  If you are performing the invocation from a Camel route, then you can use the operationName parameter for switchyard:// endpoints, e.g.

quickstarts/camel-service/src/main/java/org/switchyard/quickstarts/camel/service/JavaDSLBuilder.java at master · jboss-s…

[steffi.s.]

Hi Babo,

thank you for your answer. I tested it, but I got a NullPointerException:

------- Begin Message Trace -------

Consumer -> {urn:com.example.switchyard:HHESB:1.0}CamelServiceRoute/ExternalService

Provider -> {urn:com.example.switchyard:HHESB:1.0}ExternalService

Operation -> getPartDrawings

MEP -> IN_ONLY

Phase -> IN

State -> OK

Exchange Context ->

    CamelAggregationStrategy .........................: {Splitter[on: XPath: getPartDrawings/partName/text() to: Channel[Channel[sendTo(Endpoint[switchyard://ExternalService?operationName=getPartDrawings])]] aggregate: null]=UseOriginalAggregationStrategy}

    CamelCorrelationId ...............................: ID-strohmaierst-7-53581-1399979682957-0-4

    CamelCreatedTimestamp ............................: Tue May 13 13:15:30 CEST 2014

    CamelExceptionCaught .............................: org.switchyard.HandlerException: SWITCHYARD035429: Unexpected exception handling SOAP Message

    CamelFailureEndpoint .............................: direct://%7Burn:com.example.switchyard:HHESB:1.0%7DCamelServiceRoute/ExternalService

    CamelFilterMatched ...............................: false

    CamelSplitComplete ...............................: true

    CamelSplitIndex ..................................: 0

    CamelSplitSize ...................................: 1

    CamelToEndpoint ..................................: direct://%7Burn:com.example.switchyard:HHESB:1.0%7DCamelServiceRoute/ExternalService

    org.switchyard.bus.camel.consumer ................: ServiceReference [name={urn:com.example.switchyard:HHESB:1.0}CamelServiceRoute/ExternalService, interface=SWITCHYARD010007: BaseServiceInterface [type=java, operations=[SWITCHYARD010008: NewOperation : IN_ONLY  : [java:java.lang.String, null, null], SWITCHYARD010008: testoutput : IN_ONLY  : [null, null, null], SWITCHYARD010008: getPartDrawings : IN_ONLY  : [java:java.lang.String, null, null]]], domain=ServiceDomain [name=null]]

    org.switchyard.bus.camel.contract ................: org.switchyard.metadata.BaseExchangeContract@4a7077b3

    org.switchyard.bus.camel.dispatcher ..............: org.switchyard.bus.camel.ExchangeDispatcher@586be2c8

    org.switchyard.bus.camel.labels ..................: {org.switchyard.exchangeGatewayName=[org.switchyard.label.behavior.transient], org.switchyard.exchangeInitiatedNS=[org.switchyard.label.behavior.transient], org.switchyard.exchange.transaction.beforeInvoked=[org.switchyard.label.behavior.transient], org.switchyard.security.context.SecurityContext=[org.switchyard.label.behavior.transient]}

    org.switchyard.bus.camel.phase ...................: IN

    org.switchyard.bus.camel.provider ................: Service [name={urn:com.example.switchyard:HHESB:1.0}ExternalService, interface=SWITCHYARD010007: BaseServiceInterface [type=java, operations=[SWITCHYARD010008: testoutput : IN_ONLY  : [null, null, null], SWITCHYARD010008: getPartDrawings : IN_ONLY  : [java:java.lang.String, null, null], SWITCHYARD010008: NewOperation : IN_ONLY  : [java:java.lang.String, null, null]]], domain=ServiceDomain [name=null], metadata=org.switchyard.metadata.ServiceMetadataBuilder$ServiceMetadataImpl@430fc856]

    org.switchyard.bus.camel.replyHandler ............: org.switchyard.component.camel.CamelResponseHandler@4dc347b7

    org.switchyard.exchange.transaction.beforeInvoked : true

    org.switchyard.exchangeGatewayName ...............: soap

    org.switchyard.exchangeInitiatedNS ...............: 20348036462944

    org.switchyard.operationName .....................: InputParameter

    org.switchyard.security.context.SecurityContext ..: DefaultSecurityContext@1028246043[systemUUID=12a3fe76-ee8c-4ed0-a5dc-de2a19f044cd, expirationMillis=0, credentials=[], securityDomainsToSubjects={}]

    org.switchyard.serviceName .......................: {urn:com.example.switchyard:HHESB:1.0}CamelService

Message Context ->

    breadcrumbId ..............................: ID-strohmaierst-7-53581-1399979682957-0-1

    org.switchyard.bus.camel.labels ...........: {org.switchyard.contentType=[org.switchyard.label.behavior.transient], org.switchyard.bus.camel.messageSent=[org.switchyard.label.behavior.transient], org.switchyard.transform.TransformSequence=[org.switchyard.label.behavior.transient]}

    org.switchyard.bus.camel.messageSent ......: true

    org.switchyard.contentType ................: java:java.lang.String

    org.switchyard.messageId ..................: ID-strohmaierst-7-53581-1399979682957-0-5

    org.switchyard.transform.TransformSequence : org.switchyard.transform.TransformSequence@604a8888

------ End Message Trace -------

Caught exception of type org.switchyard.HandlerException with message: SWITCHYARD035429: Unexpected exception handling SOAP Message

  Caused by exception of type javax.xml.soap.SOAPException, message: java.lang.NullPointerException

    Caused by exception of type java.lang.NullPointerException, message: null: org.switchyard.HandlerException: SWITCHYARD035429: Unexpected exception handling SOAP Message

at org.switchyard.component.soap.OutboundHandler.handleMessage(OutboundHandler.java:305) [switchyard-component-soap-1.1.0.Final.jar:1.1.0.Final]

at org.switchyard.bus.camel.processors.ProviderProcessor.process(ProviderProcessor.java:29) [switchyard-bus-camel-1.1.0.Final.jar:1.1.0.Final]

at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:73) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:91) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) [camel-core-2.10.0.jar:2.10.0]

at org.switchyard.bus.camel.audit.FaultProcessor.process(FaultProcessor.java:46) [switchyard-bus-camel-1.1.0.Final.jar:1.1.0.Final]

at org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:45) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.interceptor.DefaultChannel.process(DefaultChannel.java:303) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.Pipeline.process(Pipeline.java:117) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.Pipeline.process(Pipeline.java:80) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) [camel-core-2.10.0.jar:2.10.0]

at org.apache.camel.processor.TryProcessor.process(TryProcessor.java:104) [camel-core-2.10.0.jar:2.10.0]

My camel route is:

public class CamelServiceRoute extends RouteBuilder {

public void configure() { 
  from("switchyard://CamelService")
  .log(
    "Received message for 'CamelService'  ")
     .streamCaching()
       .split()
         .xpath("getPartDrawings/partName/text()")

.end()
  .to("switchyard://ExternalService?operationName=getPartDrawings")
  .end()
  .end();

In the interface I call the method of the Rest WebService

public interface CamelService

{

public void InputParameter (String partName);

}

The Rest Web-Service is create in the Interface WebServiceRessource_Camel

@Path("/")
public  interface WebServiceResource_Camel {

@POST()

@Path("/")

public void InputParameter (String partName);

}

In the interface of the reference I call the method of the SOAP WebService.

interface ExternalService {

void getPartDrawings (String partName);

}

The input of the Post Web-Service is a XML Data.

<?xml version="1.0" encoding="UTF-8"?>

<getPartDrawings>

<partName>

1201.011.00

</partName>

</getPartDrawings>

The application starts by XML Data. Inside of Camel, I split the data depending on a certain parameter.

The result is a number. After this the number will be transported to a switchyard Reference. Inside the switchyard Service I call a SOAP Web-Service and invoke a special method.

I hope you can help me.

Best regards

[kcbabo]

Can you attach your app?  Are you using a Java or WSDL interface for the composite reference with the SOAP binding?  Looking at your split logic, the reference is invoked with a string like "1201.011.00".  The SOAP binding imports the message content into the SOAP Body as a child node, so if you pass along just the text value with no element definition that's going to cause problems.  The easiest way to address this would be to have a component reference used by your Camel route with a Java interface as you defined above, then have a WSDL interface for the SOAP binding.  This will require a transformer to map between the Java and XML types and in that transformer you can wrap the text value with the appropriate element definition defined in the message part of your WSDL.

[steffi.s.]

I`m not sure if I understand you correctly. At the moment I´m sending only the number (1201.011.00) as body to the Web Service.

In the picture you can see the SOAP Web-Service.

This means that I also have to send <partName> 1201.011.00 </partName> to the WebService.

I test it but I got a error message.

10:19:53,343 INFO  [route3] (http-localhost/127.0.0.1:8080-1) Output : <SOAP-ENV:Fault xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><faultcode xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">S:Client</faultcode><faultstring>Cannot find dispatch method for {}getPartDrawings</faultstring></SOAP-ENV:Fault>

In the picture you can see the properties for the external service.

Sorry, that I ask again. But was is my mistake?