2 // Copyright 2019 AT&T Intellectual Property
3 // Copyright 2019 Nokia
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
9 // http://www.apache.org/licenses/LICENSE-2.0
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
22 "e2mgr/e2managererrors"
25 "e2mgr/providers/httpmsghandlerprovider"
29 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/reader"
30 "github.com/gorilla/mux"
35 ParamRanName = "ranName"
38 type IController interface {
39 ShutdownHandler(writer http.ResponseWriter, r *http.Request)
40 X2ResetHandler(writer http.ResponseWriter, r *http.Request)
43 type Controller struct {
45 handlerProvider *httpmsghandlerprovider.IncomingRequestHandlerProvider
48 func NewController(logger *logger.Logger, rmrService *services.RmrService, rNibReaderProvider func() reader.RNibReader, rNibWriterProvider func() rNibWriter.RNibWriter,
49 config *configuration.Configuration) *Controller {
51 provider := httpmsghandlerprovider.NewIncomingRequestHandlerProvider(logger, rmrService, config, rNibWriterProvider, rNibReaderProvider)
54 handlerProvider: provider,
58 func (c *Controller) ShutdownHandler(writer http.ResponseWriter, r *http.Request) {
59 c.logger.Infof("[Client -> E2 Manager] #controller.ShutdownHandler - request: %v", prettifyRequest(r))
60 c.handleRequest(writer, &r.Header, httpmsghandlerprovider.ShutdownRequest, nil, false, http.StatusNoContent)
63 func (c *Controller) X2ResetHandler(writer http.ResponseWriter, r *http.Request) {
64 c.logger.Infof("[Client -> E2 Manager] #controller.X2ResetHandler - request: %v", prettifyRequest(r))
65 request := models.ResetRequest{}
67 ranName := vars[ParamRanName]
69 if !c.extractJsonBody(r, &request, writer) {
72 request.RanName = ranName
73 c.handleRequest(writer, &r.Header, httpmsghandlerprovider.ResetRequest, request, false, http.StatusNoContent)
76 func (c *Controller) extractJsonBody(r *http.Request, request models.Request, writer http.ResponseWriter) bool {
77 if r.ContentLength <= 0 {
81 decoder := json.NewDecoder(r.Body)
83 err := decoder.Decode(request)
86 c.logger.Errorf("[Client -> E2 Manager] #controller.extractJsonBody - unable to extract json body - error: %s", err)
87 c.handleErrorResponse(e2managererrors.NewInvalidJsonError(), writer)
94 func (c *Controller) handleRequest(writer http.ResponseWriter, header *http.Header, requestName httpmsghandlerprovider.IncomingRequest,
95 request models.Request, validateHeader bool, httpStatusResponse int) {
99 err := c.validateRequestHeader(header)
101 c.handleErrorResponse(err, writer)
106 handler, err := c.handlerProvider.GetHandler(requestName)
109 c.handleErrorResponse(err, writer)
113 err = handler.Handle(c.logger, request)
116 c.handleErrorResponse(err, writer)
120 writer.WriteHeader(httpStatusResponse)
121 c.logger.Infof("[E2 Manager -> Client] #controller.handleRequest - status response: %v", httpStatusResponse)
124 func (c *Controller) validateRequestHeader(header *http.Header) error {
126 if header.Get("Content-Type") != "application/json" {
127 c.logger.Errorf("#controller.validateRequestHeader - validation failure, incorrect content type")
129 return e2managererrors.NewHeaderValidationError()
134 func (c *Controller) handleErrorResponse(err error, writer http.ResponseWriter) {
136 var errorResponseDetails models.ErrorResponse
141 case *e2managererrors.RnibDbError:
142 e2Error, _ := err.(*e2managererrors.RnibDbError)
143 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
144 httpError = http.StatusInternalServerError
145 case *e2managererrors.CommandAlreadyInProgressError:
146 e2Error, _ := err.(*e2managererrors.CommandAlreadyInProgressError)
147 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
148 httpError = http.StatusMethodNotAllowed
149 case *e2managererrors.HeaderValidationError:
150 e2Error, _ := err.(*e2managererrors.HeaderValidationError)
151 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
152 httpError = http.StatusUnsupportedMediaType
153 case *e2managererrors.WrongStateError:
154 e2Error, _ := err.(*e2managererrors.WrongStateError)
155 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
156 httpError = http.StatusBadRequest
157 case *e2managererrors.RequestValidationError:
158 e2Error, _ := err.(*e2managererrors.RequestValidationError)
159 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
160 httpError = http.StatusBadRequest
161 case *e2managererrors.InvalidJsonError:
162 e2Error, _ := err.(*e2managererrors.InvalidJsonError)
163 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
164 httpError = http.StatusBadRequest
165 case *e2managererrors.RmrError:
166 e2Error, _ := err.(*e2managererrors.RmrError)
167 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
168 httpError = http.StatusInternalServerError
169 case *e2managererrors.ResourceNotFoundError:
170 e2Error, _ := err.(*e2managererrors.ResourceNotFoundError)
171 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
172 httpError = http.StatusNotFound
175 e2Error := e2managererrors.NewInternalError()
176 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
177 httpError = http.StatusInternalServerError
180 errorResponse, _ := json.Marshal(errorResponseDetails)
182 c.logger.Errorf("[E2 Manager -> Client] #controller.handleErrorResponse - http status: %d, error response: %+v", httpError, errorResponseDetails)
184 writer.Header().Set("Content-Type", "application/json")
185 writer.WriteHeader(httpError)
186 _, err = writer.Write(errorResponse)
189 c.logger.Errorf("#controller.handleErrorResponse - Cannot send response. writer:%v", writer)