Mehmet Can Cömert created CXF-8958:
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Summary: A migration Guide for CXF-DOSGI Users
Key: CXF-8958
URL: https://issues.apache.org/jira/browse/CXF-8958
Project: CXF
Issue Type: Wish
Reporter: Mehmet Can Cömert
As I noticed, CXF-DOSGI project is retired in the middle of 2022.
We have a big REST API implementation relying on this framework.
Now we want to update other components such as Jetty and they need newer
version of Javax.Servlet-API (4.0.0 or above) however DOSGI components seems to
request older Javax.Servlet-API (from 2.0.0 until 4.0.0)
We do not need to provide REST API resources as OSGI services, but they still
need to consume OSGI Services from the Business Logic layer.
A resource definition is done in an interface and implementation done in
another class with the help of DOSGI Intents and calling OSGI Services.
Here is the API for Resource definition in an API Bundle:
{code:java}
@Path("")
public interface IJobStatusResource {
@GET
@Produces({MediaType.APPLICATION_JSON})
Response getJobStatusEntries(@Context UriInfo uriInfo,
@QueryParam(IFieldKeys.IDENTIFIER) String
identifier)
throws RestApiException;
}
{code}
Here is the implementation exposing the Resource over OSGI and supplying the
DOSGI Intents provider for HTML/JSON serialization.
{code:java}
import org.apache.cxf.dosgi.common.api.IntentsProvider;
@Component(name = "JobStatusConfigurationResource", immediate = true, //
service = {
IJobStatusResource.class, IntentsProvider.class
}, property = {
"service.exported.configs=org.apache.cxf.rs", //
"service.exported.interfaces=*", //
"org.apache.cxf.rs.address=" +
IRestResourcePaths.JOB_STATUS_ENTRIES_PATH, //
"org.apache.cxf.rs.provider.expected=true", //
})
@ServiceDescription("JobStatus Configuration Resouce DOSGI implementation.")
public class JobStatusResource implements IJobStatusResource, IntentsProvider {
@Reference(name = "jobstatus.service.ref", //
policy = ReferencePolicy.DYNAMIC, cardinality =
ReferenceCardinality.MANDATORY, //
bind = "registerConnector", unbind = "unregisterConnector")
public void registerConnector(IJobStatusService jobStatusService) {
service = jobStatusService;
} public void unregisterConnector(IJobStatusService jobStatusService) {
service = null;
} @Reference(name = "jobstatus.intent.service.ref", //
policy = ReferencePolicy.DYNAMIC, cardinality =
ReferenceCardinality.MANDATORY, //
bind = "registerIntentFactory", unbind = "unregisterIntentFactory")
public void registerIntentFactory(IIntentFactory intentFactory) {
intentFactoryService = intentFactory;
} public void unregisterIntentFactory(IIntentFactory intentFactory) {
intentFactoryService = null;
} @Override
public Response getJobStatusEntries(UriInfo uriInfo, String id) throws
RestApiException {
// use Service from osgi to call business logic. } @Override
public List< ? > getIntents() {
return intentFactoryService.createDefaultIntents();
}} {code}
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