Revise controller error handling
[portal/ric-dashboard.git] / webapp-backend / src / main / java / org / oransc / ric / portal / dashboard / controller / AnrXappController.java
index dae8ae2..ae6845b 100644 (file)
@@ -36,88 +36,112 @@ import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.MediaType;
+import org.springframework.security.access.annotation.Secured;
 import org.springframework.util.Assert;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 import io.swagger.annotations.ApiOperation;
 
 /**
- * Provides methods to contact the ANR xApp which manages a Neighbor Cell
- * Relation Table (NCRT).
+ * Proxies calls from the front end to the ANR xApp, which manages a Neighbor
+ * Cell Relation Table (NCRT).
+ * 
+ * If a method throws RestClientResponseException, it is handled by
+ * {@link CustomResponseEntityExceptionHandler#handleProxyMethodException(Exception, org.springframework.web.context.request.WebRequest)}
+ * which returns status 502. All other exceptions are handled by Spring which
+ * returns status 500.
  */
 @Configuration
 @RestController
-@RequestMapping(value = DashboardConstants.ENDPOINT_PREFIX + "/xapp/anr", produces = MediaType.APPLICATION_JSON_VALUE)
+@RequestMapping(value = AnrXappController.CONTROLLER_PATH, produces = MediaType.APPLICATION_JSON_VALUE)
 public class AnrXappController {
 
        private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
 
-       // Query parameters
-       private static final String QP_NODEB = "ggnodeb";
-       private static final String QP_SERVING = "servingCellNrcgi";
-       private static final String QP_NEIGHBOR = "neighborCellNrpci";
+       // Publish paths in constants so tests are easy to write
+       public static final String CONTROLLER_PATH = DashboardConstants.ENDPOINT_PREFIX + "/xapp/anr";
+       // Endpoints
+       public static final String HEALTH_ALIVE_METHOD = "/health/alive";
+       public static final String HEALTH_READY_METHOD = "/health/ready";
+       public static final String GNODEBS_METHOD = "/gnodebs";
+       public static final String NCRT_METHOD = "/ncrt";
+       public static final String VERSION_METHOD = DashboardConstants.VERSION_METHOD;
+
        // Path parameters
-       private static final String PP_SERVING = "servingcells";
-       private static final String PP_NEIGHBOR = "neighborcells";
+       public static final String PP_SERVING = "servingcells";
+       public static final String PP_NEIGHBOR = "neighborcells";
 
        // Populated by the autowired constructor
        private final HealthApi healthApi;
        private final NcrtApi ncrtApi;
 
        @Autowired
-       public AnrXappController(final HealthApi healthApi, final NcrtApi ncrtApi) {
-               Assert.notNull(healthApi, "API must not be null");
-               Assert.notNull(ncrtApi, "API must not be null");
-               this.healthApi = healthApi;
-               this.ncrtApi = ncrtApi;
+       public AnrXappController(final HealthApi anrHealthApi, final NcrtApi anrNcrtApi) {
+               Assert.notNull(anrHealthApi, "API must not be null");
+               Assert.notNull(anrNcrtApi, "API must not be null");
+               this.healthApi = anrHealthApi;
+               this.ncrtApi = anrNcrtApi;
+               if (logger.isDebugEnabled())
+                       logger.debug("ctor: configured with client types {} and {}", anrHealthApi.getClass().getName(),
+                                       anrNcrtApi.getClass().getName());
        }
 
        @ApiOperation(value = "Gets the ANR client library MANIFEST.MF property Implementation-Version.", response = SuccessTransport.class)
-       @RequestMapping(value = DashboardConstants.VERSION_PATH, method = RequestMethod.GET)
-       public SuccessTransport getAnrXappClientVersion() {
+       @GetMapping(VERSION_METHOD)
+       // No role required
+       public SuccessTransport getClientVersion() {
                return new SuccessTransport(200, DashboardApplication.getImplementationVersion(HealthApi.class));
        }
 
        @ApiOperation(value = "Performs a liveness probe on the ANR xApp, result expressed as the response code.")
-       @RequestMapping(value = "/health/alive", method = RequestMethod.GET)
-       public void getAnrXappHealthAlive(HttpServletResponse response) {
+       @GetMapping(HEALTH_ALIVE_METHOD)
+       // No role required
+       public void getHealthAlive(HttpServletResponse response) {
+               logger.debug("getHealthAlive");
                healthApi.getHealthAlive();
                response.setStatus(healthApi.getApiClient().getStatusCode().value());
        }
 
        @ApiOperation(value = "Performs a readiness probe on the ANR xApp, result expressed as the response code.")
-       @RequestMapping(value = "/health/ready", method = RequestMethod.GET)
-       public void getAnrXappHealthReady(HttpServletResponse response) {
+       @GetMapping(HEALTH_READY_METHOD)
+       // No role required
+       public void getHealthReady(HttpServletResponse response) {
+               logger.debug("getHealthReady");
                healthApi.getHealthReady();
                response.setStatus(healthApi.getApiClient().getStatusCode().value());
        }
 
        @ApiOperation(value = "Returns list of gNodeB IDs based on NCRT in ANR", response = GgNodeBTable.class)
-       @RequestMapping(value = "/gnodebs", method = RequestMethod.GET)
+       @GetMapping(GNODEBS_METHOD)
+       @Secured({ DashboardConstants.ROLE_ADMIN, DashboardConstants.ROLE_STANDARD })
        public GgNodeBTable getGnodebs() {
+               logger.debug("getGnodebs");
                return ncrtApi.getgNodeB();
        }
 
        @ApiOperation(value = "Returns neighbor cell relation table for all gNodeBs or based on query parameters", response = NeighborCellRelationTable.class)
-       @RequestMapping(value = "/ncrt", method = RequestMethod.GET)
+       @GetMapping(NCRT_METHOD)
+       @Secured({ DashboardConstants.ROLE_ADMIN, DashboardConstants.ROLE_STANDARD })
        public NeighborCellRelationTable getNcrt( //
-                       @RequestParam(name = QP_NODEB, required = false) String ggnbId, //
-                       @RequestParam(name = QP_SERVING, required = false) String servingCellNrcgi, //
-                       @RequestParam(name = QP_NEIGHBOR, required = false) String neighborCellNrpci) {
-               logger.debug("getNcrt: ggnbid {}, servingCellNrpci {}, neighborCellNrcgi {}", ggnbId, servingCellNrcgi,
+                       @RequestParam(required = false) String ggnodeb, //
+                       @RequestParam(required = false) String servingCellNrcgi, //
+                       @RequestParam(required = false) String neighborCellNrpci) {
+               logger.debug("getNcrt: ggnbid {}, servingCellNrpci {}, neighborCellNrcgi {}", ggnodeb, servingCellNrcgi,
                                neighborCellNrpci);
-               return ncrtApi.getNcrt(ggnbId, servingCellNrcgi, neighborCellNrpci);
+               return ncrtApi.getNcrt(ggnodeb, servingCellNrcgi, neighborCellNrpci);
        }
 
        // /ncrt/servingcells/{servCellNrcgi}/neighborcells/{neighCellNrpci} :
        @ApiOperation(value = "Modify neighbor cell relation based on Serving Cell NRCGI and Neighbor Cell NRPCI")
-       @RequestMapping(value = "/ncrt/" + PP_SERVING + "/{" + PP_SERVING + "}/" + PP_NEIGHBOR + "/{" + PP_NEIGHBOR
-                       + "}", method = RequestMethod.PUT)
+       @PutMapping(NCRT_METHOD + "/" + PP_SERVING + "/{" + PP_SERVING + "}/" + PP_NEIGHBOR + "/{" + PP_NEIGHBOR + "}")
+       @Secured({ DashboardConstants.ROLE_ADMIN })
        public void modifyNcrt(@PathVariable(PP_SERVING) String servingCellNrcgi, //
                        @PathVariable(PP_NEIGHBOR) String neighborCellNrpci, //
                        @RequestBody NeighborCellRelationMod ncrMod, HttpServletResponse response) {
@@ -128,8 +152,8 @@ public class AnrXappController {
        }
 
        @ApiOperation(value = "Delete neighbor cell relation based on Serving Cell NRCGI and Neighbor Cell NRPCI")
-       @RequestMapping(value = "/ncrt/" + PP_SERVING + "/{" + PP_SERVING + "}/" + PP_NEIGHBOR + "/{" + PP_NEIGHBOR
-                       + "}", method = RequestMethod.DELETE)
+       @DeleteMapping(NCRT_METHOD + "/" + PP_SERVING + "/{" + PP_SERVING + "}/" + PP_NEIGHBOR + "/{" + PP_NEIGHBOR + "}")
+       @Secured({ DashboardConstants.ROLE_ADMIN })
        public void deleteNcrt(@PathVariable(PP_SERVING) String servingCellNrcgi, //
                        @PathVariable(PP_NEIGHBOR) String neighborCellNrpci, //
                        HttpServletResponse response) {