initial commit

jonahkh

2020-05-13 4829e49af4e2cd4d8c8dfe0c215bd9f3d65efdfb

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package com.redhat.developer.demos.customer.rest;
 
import org.eclipse.microprofile.rest.client.inject.RestClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
 
import javax.inject.Inject;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
 
@Path("/")
public class CustomerResource {
 
    private static final String RESPONSE_STRING_FORMAT = "customer => %s\n";
 
    private final Logger logger = LoggerFactory.getLogger(getClass());
 
    @Inject
    @RestClient
    PreferenceService preferenceService;
 
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public Response getCustomer() {
        try {
            String response = preferenceService.getPreference().trim();
            return Response.ok(String.format(RESPONSE_STRING_FORMAT, response)).build();
        } catch (WebApplicationException ex) {
            Response response = ex.getResponse();
            logger.warn("Non HTTP 20x trying to get the response from preference service: " + response.getStatus());
            return Response
                    .status(Response.Status.SERVICE_UNAVAILABLE)
                    .entity(String.format(RESPONSE_STRING_FORMAT,
                            String.format("Error: %d - %s", response.getStatus(), response.readEntity(String.class)))
                    )
                    .build();
        } catch (ProcessingException ex) {
            logger.warn("Exception trying to get the response from preference service.", ex);
            return Response
                    .status(Response.Status.SERVICE_UNAVAILABLE)
                    .entity(String.format(RESPONSE_STRING_FORMAT, ex.getCause().getClass().getSimpleName() + ": " + ex.getCause().getMessage()))
                    .build();
        }
    }
 
}