making config/data api backward compatible

Author: prakash100198

api/restHandler/DeploymentConfigurationRestHandler.go

@@ -91,16 +91,19 @@ func (handler *DeploymentConfigurationRestHandlerImpl) GetConfigData(w http.Resp
 		common.WriteJsonResp(w, err, nil, http.StatusBadRequest)
 		return
 	}
-	if r.ContentLength > 0 {
-		valuesPayload := &bean.ValuesDto{}
-		decoder := json.NewDecoder(r.Body)
-		err = decoder.Decode(valuesPayload)
-		if err != nil {
-			handler.logger.Errorw("error in decoding the request payload", "err", err, "requestBody", r.Body)
-			common.WriteJsonResp(w, err, nil, http.StatusBadRequest)
-			return
+	switch r.Method {
+	case http.MethodPost:
+		if r.ContentLength > 0 {
+			valuesPayload := &bean.ValuesDto{}
+			decoder := json.NewDecoder(r.Body)
+			err = decoder.Decode(valuesPayload)
+			if err != nil {
+				handler.logger.Errorw("error in decoding the request payload", "err", err, "requestBody", r.Body)
+				common.WriteJsonResp(w, err, nil, http.StatusBadRequest)
+				return
+			}
+			configDataQueryParams.Values = valuesPayload.Values
 		}
-		configDataQueryParams.Values = valuesPayload.Values
 	}
 
 	configDataQueryParams.UserId = userId

api/router/DeploymentConfigRouter.go

@@ -26,6 +26,6 @@ func (router DeploymentConfigurationRouterImpl) initDeploymentConfigurationRoute
 		Methods("GET")
 	configRouter.Path("/data").
 		HandlerFunc(router.deploymentGroupRestHandler.GetConfigData).
-		Methods("POST")
+		Methods("GET", "POST")
 
 }