In the quickstart "camel-service", how do I call another (external) service?

[puttime]

In the quickstart "camel-service" sample, an existing service within the project, is invoked, by doing this:

.to(

"switchyard://XMLService?operationName=acceptMessage" 

);

Now, if I have another bean service running, which was created from another project, called "MyService" and that service interface looks like this:

public interface MyServiceInterface {

    public void acceptMessage(String input);

}

         @Service (MyServiceInterface.class)

     public class MyServiceBean implements MyServiceInterface { 

                    @Override

                    void acceptMessage(String input) { 

                               System.out.println("ServiceBean-My Input = " + input);

                     }

      };

How do I invoke MyServiceBean from the "camel-service" sample?

Can I do something like,

.to(

"switchyard://MyServiceInterface?operationName=acceptMessage" 

);

[splatch]

If you have MyServiceInterface defined in one place in all places where you try to reffer it you need "sca:reference" element. Your switchyard.xml where you have camel implementation defined you need something like this:

<sca:reference name="MyServiceInterface">
    <sca:interface.java interface="com.acme.MyServiceInterface"/>
</sca:reference>

[puttime]

I tried it, added the following three lines to switchyard.xml, like this::

<sca:reference name="MyServiceInterface">

<sca:interface.java interface="com.my.whatever.somename.MyServiceInterface" />

</sca:reference>

But I get this error: The prefix "sca" for element "sca:reference" is not bound. switchyard.xml

If I do this,

<interface.java interface="com.my.whatever.somename.MyServiceInterface" />

</reference>

then I get this error:

<reference name="MyServiceInterface">

Unresolved Reference: The component reference "MyServiceInterface" cannot be resolved to a service. switchyard.xml

[splatch]

It depends what's the default namespace for your configuration - you may not need sca: prefix if xmlns for your composite element points to http://docs.oasis-open.org/ns/opencsa/sca/200912:

<composite .... xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200912">
    <!-- skip unecessary part -->
    <component>
        <reference name="MyServiceInterface">
            <interface.java interface="com.my.whatever.somename.MyServiceInterface" />
        </reference>
    </component>
</sca:composite>

Feel free to post your configuration for review if you will still have problems.

[puttime]

ok, here is the content of switchyard.xml from camel-service.

Note that I have added the "MyServiceInterface" in here.

<?xml version="1.0" encoding="UTF-8"?>
<switchyard xmlns="urn:switchyard-config:switchyard:1.0"
    xmlns:file="urn:switchyard-component-camel-file:config:1.0"
    xmlns:swyd="urn:switchyard-config:switchyard:1.0">

    <composite xmlns="http://docs.oasis-open.org/ns/opencsa/sca/200912" name="camel-service"
        targetNamespace="urn:switchyard-quickstart:camel-service:0.1.0">
  
  <service name="JavaDSL" promote="JavaDSLBuilder/JavaDSL">
            <file:binding.file>
                <file:directory>data/</file:directory>
            </file:binding.file>
        </service>
        <component name="JavaDSLBuilder">
            <implementation.camel xmlns="urn:switchyard-component-camel:config:1.0">
                <java class="org.switchyard.quickstarts.camel.service.JavaDSLBuilder"/>
            </implementation.camel>
            <service name="JavaDSL">
                <interface.java interface="org.switchyard.quickstarts.camel.service.JavaDSL"/>
            </service>
            <reference name="XMLService">
                <swyd:interface.esb xmlns:swyd="urn:switchyard-config:switchyard:1.0" inputType="java:java.lang.String"/>
            </reference>
            <reference name="MyServiceInterface">
                   <interface.java interface="com.my.whatever.somename.MyServiceInterface"/>
             </reference>
  
        </component>
        <component name="XMLComponent">
            <implementation.camel xmlns="urn:switchyard-component-camel:config:1.0">
                <xml path="META-INF/route.xml"/>
            </implementation.camel>
            <service name="XMLService">
                <swyd:interface.esb xmlns:swyd="urn:switchyard-config:switchyard:1.0" inputType="java:java.lang.String"/>
            </service>
        </component>
    </composite>
</switchyard>

[splatch]

You don't have sca: prefix so you don't need prefix reference elements too. You are good to go as long as you have service with MyServiceInterface deployed.

[puttime]

then I get this error:

Unresolved Reference: The component reference "MyServiceInterface" cannot be resolved to a service. switchyard.xml

If I still go ahead and deploy the application on the server, then I get this error on the server::

15:42:51,826 INFO [org.jboss.as.controller] (DeploymentScanner-threads - 1) JBAS014774: Service status report

JBAS014777: Services which failed to start: service jboss.deployment.unit."switchyard-quickstart-camel-service.jar".SwitchYardService:

org.jboss.msc.service.StartException in service jboss.deployment.unit."switchyard-quickstart-camel-service.jar".SwitchYardService: org.switchyard.exception.SwitchYardException

: Failed to load Service interface class 'com.my.whatever.somename.MyServiceInterface'.