Question Re: CAP Java: Get Multitenancy Dependencies in Technology Q&A

CAP Java: Get Multitenancy Dependencies

christoffer_fuss — Fri, 13 May 2022 06:30:23 GMT

Hi all,

we are developing a CAP Java multitenant application and have some problems with consuming dependent services: the destination service, the connectivity service and the html5-apps-repo service.
In Node.js the dependencies are coming on the fly:

In my CAP Java application I just get the root dependency for XSUAA:

In the documentation I saw that I need to react to the GET_DEPENDENY_EVENT

import com.sap.cloud.mt.subscription.json.ApplicationDependency;

@Value("${vcap.services.<my-service-instance>.credentials.xsappname}")
private String xsappname;

@On(event = MtSubscriptionService.EVENT_GET_DEPENDENCIES)
public void onGetDependencies(MtGetDependenciesEventContext context) {
    ApplicationDependency dependency = new ApplicationDependency();
    dependency.xsappname = xsappname;
    List<ApplicationDependency> dependencies = new ArrayList<>();
    dependencies.add(dependency);
    context.setResult(dependencies);
}

When I do this, the subscription fails with the error:

There is only a value set for the xsappname and all the other attributes like appId and appName are null. In the code above I just set value for xsappname but I dont know how to pass the other attributes because the methods are deprecated:

So what is the correct way to fetch the dependencies?

Best regrads and many thanks,
Chris

Re: CAP Java: Get Multitenancy Dependencies

marcbecker — Wed, 01 Jun 2022 11:19:30 GMT

Hi,

"capmt-datatrainhubtest-datatrain" doesn't look like a valid xsappname. Where did you get that from?

The xsappname that you need to return in the dependencies is the XSUAA OAuth2 Client of your service instance. In case of a destination service binding you can find the correct value in the "xsappname" property of the credentials.

Best regards,
Marc

Re: CAP Java: Get Multitenancy Dependencies

christoffer_fuss — Wed, 01 Jun 2022 11:49:47 GMT

Thaks, I was using the wrong xsappame as you suggested 🙂 It is working fine now 🙂 I had to use the xsappname for the destination service and the connecivity service.

Best regards and many thanks,

Chris

Re: CAP Java: Get Multitenancy Dependencies

rashmiangadi — Wed, 11 Dec 2024 15:53:05 GMT

Where do I need to add this method any examples ?