Fix issue in service ep

components/device-mgt-iot-virtualfirealarm/org.wso2.carbon.device.mgt.iot.virtualfirealarm.plugin.impl/src/main/java/org/wso2/carbon/device/mgt/iot/virtualfirealarm/plugin/constants/VirtualFireAlarmConstants.java

@@ -31,4 +31,5 @@ public class VirtualFireAlarmConstants {
 	public static final String TEMPERATURE_CONTEXT = "/TEMPERATURE/";
 
     public static final String SENSOR_TEMP = "temperature";
+    public static final String SENSOR_HUMIDITY = "humidity";
 }

components/device-mgt-iot-virtualfirealarm/org.wso2.carbon.device.mgt.iot.virtualfirealarm.service.impl/src/main/java/org/wso2/carbon/device/mgt/iot/virtualfirealarm/service/VirtualFireAlarmService.java

@@ -648,7 +648,6 @@ public class VirtualFireAlarmService {
 
 
     /**
-     *
      * @param owner
      * @param deviceId
      * @param protocol
@@ -657,25 +656,23 @@ public class VirtualFireAlarmService {
      */
     @Path("controller/readhumidity")
     @GET
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
     @Feature(code = "readhumidity", name = "Humidity", type = "monitor",
             description = "Read Humidity Readings from Virtual Fire Alarm")
-    public String requestHumidity(@HeaderParam("owner") String owner,
+    public SensorRecord requestHumidity(@HeaderParam("owner") String owner,
                                         @HeaderParam("deviceId") String deviceId,
                                         @HeaderParam("protocol") String protocol,
                                         @Context HttpServletResponse response) {
-        String replyMsg = "";
+        SensorRecord sensorRecord = null;
-
         DeviceValidator deviceValidator = new DeviceValidator();
         try {
             if (!deviceValidator.isExist(owner, SUPER_TENANT, new DeviceIdentifier(
                     deviceId, VirtualFireAlarmConstants.DEVICE_TYPE))) {
                 response.setStatus(Response.Status.UNAUTHORIZED.getStatusCode());
-                return "Unauthorized Access Attempt";
             }
         } catch (DeviceManagementException e) {
-            replyMsg = e.getErrorMessage();
             response.setStatus(Response.Status.INTERNAL_SERVER_ERROR.getStatusCode());
-            return replyMsg;
         }
 
         String protocolString = protocol.toUpperCase();
@@ -689,14 +686,16 @@ public class VirtualFireAlarmService {
                 case HTTP_PROTOCOL:
                     String deviceHTTPEndpoint = deviceToIpMap.get(deviceId);
                     if (deviceHTTPEndpoint == null) {
-                        replyMsg = "IP not registered for device: " + deviceId + " of owner: " + owner;
                         response.setStatus(Response.Status.PRECONDITION_FAILED.getStatusCode());
-                        return replyMsg;
                     }
 
-                    replyMsg = VirtualFireAlarmServiceUtils.sendCommandViaHTTP(deviceHTTPEndpoint,
+                    String humidityValue = VirtualFireAlarmServiceUtils.sendCommandViaHTTP(deviceHTTPEndpoint,
                                                                                            VirtualFireAlarmConstants.HUMIDITY_CONTEXT,
                                                                                            false);
+                    SensorDataManager.getInstance().setSensorRecord(deviceId,
+                                                                    VirtualFireAlarmConstants.SENSOR_TEMP,
+                                                                    humidityValue,
+                                                                    Calendar.getInstance().getTimeInMillis());
                     break;
 
                 case MQTT_PROTOCOL:
@@ -710,22 +709,18 @@ public class VirtualFireAlarmService {
                     break;
 
                 default:
-                    replyMsg = "Requested protocol '" + protocolString + "' is not supported";
                     response.setStatus(Response.Status.NOT_ACCEPTABLE.getStatusCode());
-                    return replyMsg;
             }
-        } catch (DeviceManagementException | TransportHandlerException e) {
+            sensorRecord = SensorDataManager.getInstance().getSensorRecord(deviceId,
-            replyMsg = e.getMessage();
+                                                                           VirtualFireAlarmConstants.SENSOR_HUMIDITY);
+        } catch (DeviceManagementException | DeviceControllerException | TransportHandlerException e) {
             response.setStatus(Response.Status.INTERNAL_SERVER_ERROR.getStatusCode());
-            return replyMsg;
         }
 
         response.setStatus(Response.Status.OK.getStatusCode());
-        replyMsg = "The current humidity reading of the device is " + replyMsg;
+        return sensorRecord;
-        return replyMsg;
     }
 
-
     /**
      *
      * @param owner