// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
-//
+
+// This source code is part of the near-RT RIC (RAN Intelligent Controller)
+// platform project (RICP).
package controllers
import (
+ "e2mgr/e2managererrors"
"e2mgr/logger"
"e2mgr/models"
"e2mgr/providers/httpmsghandlerprovider"
- "e2mgr/rNibWriter"
- "e2mgr/services"
- "e2mgr/sessions"
- "e2mgr/utils"
"encoding/json"
- "errors"
- "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
- "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/reader"
- "github.com/go-ozzo/ozzo-validation"
- "github.com/go-ozzo/ozzo-validation/is"
+ "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
"github.com/golang/protobuf/jsonpb"
- "github.com/julienschmidt/httprouter"
+ "github.com/golang/protobuf/proto"
+ "github.com/gorilla/mux"
+ "io"
+ "io/ioutil"
"net/http"
"net/http/httputil"
"strings"
- "sync"
- "time"
)
const (
- parseErrorCode int = 401
- validationErrorCode int = 402
- notFoundErrorCode int = 404
- internalErrorCode int = 501
- requiredInputErrorMessage = "Mandatory fields are missing"
- validationFailedMessage = "Validation failed"
- parseErrorMessage = "Parse failure"
- notFoundErrorMessage = "Resource not found"
- internalErrorMessage = "Internal Server Error. Please try again later"
- sendMessageErrorMessage = "Failed to send message. For more information please check logs"
+ ParamRanName = "ranName"
+ LimitRequest = 2000
)
-
-var E2Sessions = make(sessions.E2Sessions)
-
-var messageChannel chan *models.E2RequestMessage
-var errorChannel chan error
+const ApplicationJson = "application/json"
+const ContentType = "Content-Type"
+
+type INodebController interface {
+ Shutdown(writer http.ResponseWriter, r *http.Request)
+ X2Reset(writer http.ResponseWriter, r *http.Request)
+ GetNodeb(writer http.ResponseWriter, r *http.Request)
+ UpdateGnb(writer http.ResponseWriter, r *http.Request)
+ GetNodebIdList(writer http.ResponseWriter, r *http.Request)
+ SetGeneralConfiguration(writer http.ResponseWriter, r *http.Request)
+}
type NodebController struct {
- rmrService *services.RmrService
- Logger *logger.Logger
- rnibReaderProvider func() reader.RNibReader
- rnibWriterProvider func() rNibWriter.RNibWriter
+ logger *logger.Logger
+ handlerProvider *httpmsghandlerprovider.IncomingRequestHandlerProvider
}
-func NewNodebController(logger *logger.Logger, rmrService *services.RmrService, rnibReaderProvider func() reader.RNibReader,
- rnibWriterProvider func() rNibWriter.RNibWriter) *NodebController {
- messageChannel = make(chan *models.E2RequestMessage)
- errorChannel = make(chan error)
+func NewNodebController(logger *logger.Logger, handlerProvider *httpmsghandlerprovider.IncomingRequestHandlerProvider) *NodebController {
return &NodebController{
- rmrService: rmrService,
- Logger: logger,
- rnibReaderProvider: rnibReaderProvider,
- rnibWriterProvider: rnibWriterProvider,
+ logger: logger,
+ handlerProvider: handlerProvider,
}
}
-func prettifyRequest(request *http.Request) string {
- dump, _ := httputil.DumpRequest(request, true)
- requestPrettyPrint := strings.Replace(string(dump), "\r\n", " ", -1)
- return strings.Replace(requestPrettyPrint, "\n", "", -1)
+func (c *NodebController) GetNodebIdList(writer http.ResponseWriter, r *http.Request) {
+ c.logger.Infof("[Client -> E2 Manager] #NodebController.GetNodebIdList - request: %v", c.prettifyRequest(r))
+
+ c.handleRequest(writer, &r.Header, httpmsghandlerprovider.GetNodebIdListRequest, nil, false)
}
-func (rc NodebController) HandleRequest(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
- startTime := time.Now()
- rc.Logger.Infof("[Client -> E2 Manager] #nodeb_controller.HandleRequest - request: %v", prettifyRequest(request))
+func (c *NodebController) GetNodeb(writer http.ResponseWriter, r *http.Request) {
+ c.logger.Infof("[Client -> E2 Manager] #NodebController.GetNodeb - request: %v", c.prettifyRequest(r))
+ vars := mux.Vars(r)
+ ranName := vars["ranName"]
+ request := models.GetNodebRequest{RanName: ranName}
+ c.handleRequest(writer, &r.Header, httpmsghandlerprovider.GetNodebRequest, request, false)
+}
- messageTypeParam := params.ByName("messageType")
- requestHandlerProvider := httpmsghandlerprovider.NewRequestHandlerProvider(rc.rnibWriterProvider)
- handler, err := requestHandlerProvider.GetHandler(rc.Logger, messageTypeParam)
+func (c *NodebController) UpdateGnb(writer http.ResponseWriter, r *http.Request) {
+ c.logger.Infof("[Client -> E2 Manager] #NodebController.UpdateGnb - request: %v", c.prettifyRequest(r))
+ vars := mux.Vars(r)
+ ranName := vars[ParamRanName]
- if err != nil {
- handleErrorResponse(rc.Logger, http.StatusNotFound, notFoundErrorCode, notFoundErrorMessage, writer, startTime)
- return
- }
+ request := models.UpdateGnbRequest{}
- requestDetails, err := parseJson(rc.Logger, request)
+ gnb := entities.Gnb{}
- if err != nil {
- handleErrorResponse(rc.Logger, http.StatusBadRequest, parseErrorCode, parseErrorMessage, writer, startTime)
+ if !c.extractRequestBodyToProto(r, &gnb, writer) {
return
}
- rc.Logger.Infof("#nodeb_controller.HandleRequest - request: %+v", requestDetails)
+ request.Gnb = &gnb
+ request.RanName = ranName
+ c.handleRequest(writer, &r.Header, httpmsghandlerprovider.UpdateGnbRequest, request, true)
+}
+
+func (c *NodebController) SetGeneralConfiguration(writer http.ResponseWriter, r *http.Request) {
+ c.logger.Infof("[Client -> E2 Manager] #NodebController.SetGeneralConfiguration - request: %v", c.prettifyRequest(r))
- if err := validateRequestDetails(rc.Logger, requestDetails); err != nil {
- handleErrorResponse(rc.Logger, http.StatusBadRequest, validationErrorCode, requiredInputErrorMessage, writer, startTime)
+ request := models.GeneralConfigurationRequest{}
+
+ if !c.extractJsonBody(r, &request, writer){
return
}
+ c.handleRequest(writer, &r.Header, httpmsghandlerprovider.SetGeneralConfigurationRequest, request, false)
+}
+
+func (c *NodebController) Shutdown(writer http.ResponseWriter, r *http.Request) {
+ c.logger.Infof("[Client -> E2 Manager] #NodebController.Shutdown - request: %v", c.prettifyRequest(r))
+ c.handleRequest(writer, &r.Header, httpmsghandlerprovider.ShutdownRequest, nil, false)
+}
- err = handler.PreHandle(rc.Logger, &requestDetails)
+func (c *NodebController) X2Reset(writer http.ResponseWriter, r *http.Request) {
+ c.logger.Infof("[Client -> E2 Manager] #NodebController.X2Reset - request: %v", c.prettifyRequest(r))
+ request := models.ResetRequest{}
+ vars := mux.Vars(r)
+ ranName := vars[ParamRanName]
- if err != nil {
- handleErrorResponse(rc.Logger, http.StatusInternalServerError, internalErrorCode, err.Error(), writer, startTime)
+ if r.ContentLength > 0 && !c.extractJsonBody(r, &request, writer) {
return
}
+ request.RanName = ranName
+ c.handleRequest(writer, &r.Header, httpmsghandlerprovider.ResetRequest, request, false)
+}
- rc.Logger.Infof("[E2 Manager -> Client] #nodeb_controller.HandleRequest - http status: 200")
- writer.WriteHeader(http.StatusOK)
+func (c *NodebController) extractRequestBodyToProto(r *http.Request, pb proto.Message , writer http.ResponseWriter) bool {
+ defer r.Body.Close()
- var wg sync.WaitGroup
+ err := jsonpb.Unmarshal(r.Body, pb)
- go handler.CreateMessage(rc.Logger, &requestDetails, messageChannel, E2Sessions, startTime, wg)
+ if err != nil {
+ c.logger.Errorf("[Client -> E2 Manager] #NodebController.extractJsonBody - unable to extract json body - error: %s", err)
+ c.handleErrorResponse(e2managererrors.NewInvalidJsonError(), writer)
+ return false
+ }
- go rc.rmrService.SendMessage(handler.GetMessageType(), messageChannel, errorChannel, wg)
+ return true
+}
- wg.Wait()
+func (c *NodebController) extractJsonBody(r *http.Request, request models.Request, writer http.ResponseWriter) bool {
+ defer r.Body.Close()
+ body, err := ioutil.ReadAll(io.LimitReader(r.Body, LimitRequest))
- err = <-errorChannel
+ if err != nil {
+ c.logger.Errorf("[Client -> E2 Manager] #NodebController.extractJsonBody - unable to extract json body - error: %s", err)
+ c.handleErrorResponse(e2managererrors.NewInvalidJsonError(), writer)
+ return false
+ }
+ err = json.Unmarshal(body, &request)
if err != nil {
- handleErrorResponse(rc.Logger, http.StatusInternalServerError, internalErrorCode, sendMessageErrorMessage, writer, startTime)
- return
+ c.logger.Errorf("[Client -> E2 Manager] #NodebController.extractJsonBody - unable to extract json body - error: %s", err)
+ c.handleErrorResponse(e2managererrors.NewInvalidJsonError(), writer)
+ return false
}
- printHandlingRequestElapsedTimeInMs(rc.Logger, startTime)
+ return true
}
-func (rc NodebController) GetNodebIdList(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
- startTime := time.Now()
- rnibReaderService := services.NewRnibReaderService(rc.rnibReaderProvider)
- nodebIdList, rnibError := rnibReaderService.GetNodebIdList()
+func (c *NodebController) handleRequest(writer http.ResponseWriter, header *http.Header, requestName httpmsghandlerprovider.IncomingRequest, request models.Request, validateRequestHeaders bool) {
- if rnibError != nil {
- rc.Logger.Errorf("%v", rnibError);
- httpStatusCode, errorCode, errorMessage := rnibErrorToHttpError(rnibError)
- handleErrorResponse(rc.Logger, httpStatusCode, errorCode, errorMessage, writer, startTime)
- return;
+ if validateRequestHeaders {
+
+ err := c.validateRequestHeader(header)
+ if err != nil {
+ c.handleErrorResponse(err, writer)
+ return
+ }
}
- pmList := utils.ConvertNodebIdListToProtoMessageList(*nodebIdList)
- result, err := utils.MarshalProtoMessageListToJsonArray(pmList)
+ handler, err := c.handlerProvider.GetHandler(requestName)
if err != nil {
- rc.Logger.Errorf("%v", err);
- handleErrorResponse(rc.Logger, http.StatusInternalServerError, internalErrorCode, internalErrorMessage, writer, startTime)
- return;
+ c.handleErrorResponse(err, writer)
+ return
}
- writer.Header().Set("Content-Type", "application/json")
- rc.Logger.Infof("[E2 Manager -> Client] #nodeb_controller.GetNodebIdList - response: %s", result)
- writer.Write([]byte(result))
-}
+ response, err := handler.Handle(request)
-func (rc NodebController) GetNodeb(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
- startTime := time.Now()
- ranName := params.ByName("ranName")
- // WAS: respondingNode, rnibError := reader.GetRNibReader().GetNodeb(ranName)
- rnibReaderService := services.NewRnibReaderService(rc.rnibReaderProvider);
- respondingNode, rnibError := rnibReaderService.GetNodeb(ranName)
- if rnibError != nil {
- rc.Logger.Errorf("%v", rnibError)
- httpStatusCode, errorCode, errorMessage := rnibErrorToHttpError(rnibError)
- handleErrorResponse(rc.Logger, httpStatusCode, errorCode, errorMessage, writer, startTime)
+ if err != nil {
+ c.handleErrorResponse(err, writer)
+ return
+ }
+
+ if response == nil {
+ writer.WriteHeader(http.StatusNoContent)
+ c.logger.Infof("[E2 Manager -> Client] #NodebController.handleRequest - status response: %v", http.StatusNoContent)
return
}
- m := jsonpb.Marshaler{}
- result, err := m.MarshalToString(respondingNode)
+ result, err := response.Marshal()
if err != nil {
- rc.Logger.Errorf("%v", err)
- handleErrorResponse(rc.Logger, http.StatusInternalServerError, internalErrorCode, internalErrorMessage, writer, startTime)
+ c.handleErrorResponse(err, writer)
return
}
- writer.Header().Set("Content-Type", "application/json")
- rc.Logger.Infof("[E2 Manager -> Client] #nodeb_controller.GetNodeb - response: %s", result)
- writer.Write([]byte(result))
+ c.logger.Infof("[E2 Manager -> Client] #NodebController.handleRequest - response: %s", result)
+ writer.Header().Set(ContentType, ApplicationJson)
+ writer.Write(result)
}
-func (rc NodebController) HandleHealthCheckRequest(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
- //fmt.Println("[X-APP -> Client] #HandleHealthCheckRequest - http status: 200")
- writer.WriteHeader(http.StatusOK)
-}
+func (c *NodebController) validateRequestHeader(header *http.Header) error {
+
+ if header.Get(ContentType) != ApplicationJson {
+ c.logger.Errorf("#NodebController.validateRequestHeader - validation failure, incorrect content type")
-func parseJson(logger *logger.Logger, request *http.Request) (models.RequestDetails, error) {
- var requestDetails models.RequestDetails
- if err := json.NewDecoder(request.Body).Decode(&requestDetails); err != nil {
- logger.Errorf("#nodeb_controller.parseJson - cannot deserialize incoming request. request: %v, error: %v", request, err)
- return requestDetails, err
+ return e2managererrors.NewHeaderValidationError()
}
- return requestDetails, nil
+ return nil
}
-func validateRequestDetails(logger *logger.Logger, requestDetails models.RequestDetails) error {
+func (c *NodebController) handleErrorResponse(err error, writer http.ResponseWriter) {
+
+ var errorResponseDetails models.ErrorResponse
+ var httpError int
- if requestDetails.RanPort == 0 {
- logger.Errorf("#nodeb_controller.validateRequestDetails - validation failure: port cannot be zero")
- return errors.New("port: cannot be blank")
- }
- err := validation.ValidateStruct(&requestDetails,
- validation.Field(&requestDetails.RanIp, validation.Required, is.IP),
- validation.Field(&requestDetails.RanName, validation.Required),
- )
if err != nil {
- logger.Errorf("#nodeb_controller.validateRequestDetails - validation failure, error: %v", err)
+ switch err.(type) {
+ case *e2managererrors.RnibDbError:
+ e2Error, _ := err.(*e2managererrors.RnibDbError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusInternalServerError
+ case *e2managererrors.CommandAlreadyInProgressError:
+ e2Error, _ := err.(*e2managererrors.CommandAlreadyInProgressError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusMethodNotAllowed
+ case *e2managererrors.HeaderValidationError:
+ e2Error, _ := err.(*e2managererrors.HeaderValidationError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusUnsupportedMediaType
+ case *e2managererrors.WrongStateError:
+ e2Error, _ := err.(*e2managererrors.WrongStateError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusBadRequest
+ case *e2managererrors.RequestValidationError:
+ e2Error, _ := err.(*e2managererrors.RequestValidationError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusBadRequest
+ case *e2managererrors.InvalidJsonError:
+ e2Error, _ := err.(*e2managererrors.InvalidJsonError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusBadRequest
+ case *e2managererrors.RmrError:
+ e2Error, _ := err.(*e2managererrors.RmrError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusInternalServerError
+ case *e2managererrors.ResourceNotFoundError:
+ e2Error, _ := err.(*e2managererrors.ResourceNotFoundError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusNotFound
+ case *e2managererrors.E2TInstanceAbsenceError:
+ e2Error, _ := err.(*e2managererrors.E2TInstanceAbsenceError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusServiceUnavailable
+ case *e2managererrors.RoutingManagerError:
+ e2Error, _ := err.(*e2managererrors.RoutingManagerError)
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusServiceUnavailable
+ default:
+ e2Error := e2managererrors.NewInternalError()
+ errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
+ httpError = http.StatusInternalServerError
+ }
}
-
- return err
-}
-
-func handleErrorResponse(logger *logger.Logger, httpStatus int, errorCode int, errorMessage string, writer http.ResponseWriter, startTime time.Time) {
- errorResponseDetails := models.ErrorResponse{errorCode, errorMessage}
errorResponse, _ := json.Marshal(errorResponseDetails)
- printHandlingRequestElapsedTimeInMs(logger, startTime)
- logger.Infof("[E2 Manager -> Client] #nodeb_controller.handleErrorResponse - http status: %d, error response: %+v", httpStatus, errorResponseDetails)
- writer.Header().Set("Content-Type", "application/json")
- writer.WriteHeader(httpStatus)
- _, err := writer.Write(errorResponse)
- if err != nil {
- logger.Errorf("#nodeb_controller.handleErrorResponse - Cannot send response. writer:%v", writer)
- }
-}
+ c.logger.Errorf("[E2 Manager -> Client] #NodebController.handleErrorResponse - http status: %d, error response: %+v", httpError, errorResponseDetails)
-func printHandlingRequestElapsedTimeInMs(logger *logger.Logger, startTime time.Time) {
- logger.Infof("Summary: #nodeb_controller.printElapsedTimeInMs - Elapsed time for handling request from client to E2 termination: %f ms",
- float64(time.Since(startTime))/float64(time.Millisecond))
+ writer.Header().Set(ContentType, ApplicationJson)
+ writer.WriteHeader(httpError)
+ _, err = writer.Write(errorResponse)
}
-func rnibErrorToHttpError(rnibError common.IRNibError) (int, int, string) {
- switch rnibError.GetCode() {
- case common.RESOURCE_NOT_FOUND:
- return http.StatusNotFound, notFoundErrorCode, notFoundErrorMessage
- case common.INTERNAL_ERROR:
- return http.StatusInternalServerError, internalErrorCode, internalErrorMessage
- case common.VALIDATION_ERROR:
- return http.StatusBadRequest, validationErrorCode, validationFailedMessage
- default:
- return http.StatusInternalServerError, internalErrorCode, internalErrorMessage
- }
+func (c *NodebController) prettifyRequest(request *http.Request) string {
+ dump, _ := httputil.DumpRequest(request, true)
+ requestPrettyPrint := strings.Replace(string(dump), "\r\n", " ", -1)
+ return strings.Replace(requestPrettyPrint, "\n", "", -1)
}