how to get admin session using service user

Hi @manikanthar1295 

You can create a JCRUtilService class which will read the service user and then get the resource resolver from it.

Once you have the resource resolver available, you can get the session from it.

This Util class can be used anywhere you need an admin resource resolver.

Please see the below code:

@Component(service = JcrUtilService.class, immediate = true, property = {"process.label=Project - JCR Service",
        Constants.SERVICE_DESCRIPTION + "=Project - JCR Service", Constants.SERVICE_VENDOR + "=Project",
        Constants.SERVICE_RANKING + ":Integer=1001"})

public class JcrUtilService {
    private static final Logger LOG = LoggerFactory.getLogger(JcrUtilService.class);

    private static final String SUBSERVICE = "dataread";

    @Activate
    protected void activate(final ComponentContext componentContext) throws RepositoryException, LoginException {
        LOG.info("JCR Util Service :: Activate Method");
    }

    @Deactivate
    protected void deactivate(final ComponentContext componentContext) throws RepositoryException, LoginException {
        LOG.info("JCR Util Service :: Deactivate Method");
    }

    public static Object getService(final Class<?> serviceType) {
        final Bundle bundle = FrameworkUtil.getBundle(serviceType);
        final BundleContext bundleContext = bundle.getBundleContext();
        final ServiceReference serviceReference = bundleContext.getServiceReference(serviceType.getName());

        return bundleContext.getService(serviceReference);
    }

    private static ResourceResolverFactory getResourceResolverFactory() {
        return (ResourceResolverFactory) getService(ResourceResolverFactory.class);
    }

    public static ResourceResolver getResourceResolver() {
        ResourceResolver resourceResolver = null;
        try {
            Map<String, Object> param = new HashMap<>();
            param.put(ResourceResolverFactory.SUBSERVICE, SUBSERVICE);
            resourceResolver = getResourceResolverFactory().getServiceResourceResolver(param);
        } catch (LoginException e) {
            LOG.error("Error while getting Resource Resolver", e);
        }
        return resourceResolver;
    }
}

try (ResourceResolver resourceResolver = JcrUtilService.getResourceResolver()) {
    Session session = resourceResolver.adaptTo(Session.class); // Session Object obtained from System User
    
} catch (RepositoryException e) {
    log.error("Repository Exception", e);
}

Service User permission with dataread. Create an OSGi config and add the below properties.

org.apache.sling.serviceusermapping.impl.ServiceUserMapperImpl.xml

<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
    jcr:primaryType="sling:OsgiConfig"
    service.ranking="0"
    user.default="service-user"
    user.mapping="[com.adobe.granite.oauth.server=oauthservice,com.project:dataread=service-user]"/>

Hope this helps!

Thanks

@manikanthar1295,

If you are a visual learner (by watching videos), here is a great tutorial on how this can be done. End to end configuration + code will be available - https://www.youtube.com/watch?v=H_ljzX9B4Q0

The video goes through step by step, creating a system user, setting up OSGI configuration (service user)), and includes an OSGI service example.