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"
29 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/reader"
30 "github.com/julienschmidt/httprouter"
37 ParamRanName = "ranName"
39 type Controller struct {
41 handlerProvider *providers.IncomingRequestHandlerProvider
42 rmrResponseChannel chan<- *models.NotificationResponse
45 func NewController(logger *logger.Logger, rmrService *services.RmrService, rNibReaderProvider func() reader.RNibReader, rNibWriterProvider func() rNibWriter.RNibWriter,
46 config *configuration.Configuration, rmrResponseChannel chan<- *models.NotificationResponse) *Controller {
48 provider := providers.NewIncomingRequestHandlerProvider(logger, rmrService, config, rNibWriterProvider, rNibReaderProvider)
51 handlerProvider: provider,
52 rmrResponseChannel: rmrResponseChannel,
56 func (c *Controller)ShutdownHandler(writer http.ResponseWriter, r *http.Request, params httprouter.Params){
58 c.handleRequest(writer, &r.Header, providers.ShutdownRequest,nil, false, http.StatusNoContent)
61 func (c *Controller) X2ResetHandler(writer http.ResponseWriter, r *http.Request, params httprouter.Params){
62 startTime := time.Now()
63 request:= models.ResetRequest{}
64 ranName:= params.ByName(ParamRanName)
65 if !c.extractJsonBody(r.Body, &request, writer){
68 request.RanName = ranName
69 request.StartTime = startTime
70 c.handleRequest(writer, &r.Header, providers.ResetRequest, request, false, http.StatusNoContent)
73 func (c *Controller) extractJsonBody(body io.Reader, request models.Request, writer http.ResponseWriter) bool{
74 decoder := json.NewDecoder(body)
75 if err:= decoder.Decode(request); err != nil {
77 c.logger.Errorf("[Client -> E2 Manager] #controller.extractJsonBody - unable to extract json body - error: %s", err)
78 c.handleErrorResponse(e2managererrors.NewRequestValidationError(), writer)
85 func (c *Controller) handleRequest(writer http.ResponseWriter, header *http.Header, requestName providers.IncomingRequest,
86 request models.Request, validateHeader bool, httpStatusResponse int) {
88 c.logger.Infof("[Client -> E2 Manager] #controller.handleRequest - request: %v", requestName) //TODO print request if exist
92 err := c.validateRequestHeader(header)
94 c.handleErrorResponse(err, writer)
99 handler,err := c.handlerProvider.GetHandler(requestName)
101 c.handleErrorResponse(err, writer)
105 err = handler.Handle(c.logger, request, c.rmrResponseChannel)
108 c.handleErrorResponse(err, writer)
112 writer.WriteHeader(httpStatusResponse)
113 c.logger.Infof("[E2 Manager -> Client] #controller.handleRequest - status response: %v", httpStatusResponse)
116 func (c *Controller) validateRequestHeader( header *http.Header) error {
118 if header.Get("Content-Type") != "application/json"{
119 c.logger.Errorf("#controller.validateRequestHeader - validation failure, incorrect content type")
121 return e2managererrors.NewHeaderValidationError()
126 func (c *Controller) handleErrorResponse(err error, writer http.ResponseWriter){
128 var errorResponseDetails models.ErrorResponse
133 case *e2managererrors.RnibDbError:
134 e2Error, _ := err.(*e2managererrors.RnibDbError)
135 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
136 httpError = http.StatusInternalServerError
137 case *e2managererrors.CommandAlreadyInProgressError:
138 e2Error, _ := err.(*e2managererrors.CommandAlreadyInProgressError)
139 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
140 httpError = http.StatusMethodNotAllowed
141 case *e2managererrors.HeaderValidationError:
142 e2Error, _ := err.(*e2managererrors.HeaderValidationError)
143 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
144 httpError = http.StatusUnsupportedMediaType
145 case *e2managererrors.WrongStateError:
146 e2Error, _ := err.(*e2managererrors.WrongStateError)
147 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
148 httpError = http.StatusBadRequest
149 case *e2managererrors.RequestValidationError:
150 e2Error, _ := err.(*e2managererrors.RequestValidationError)
151 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
152 httpError = http.StatusBadRequest
153 case *e2managererrors.RmrError:
154 e2Error, _ := err.(*e2managererrors.RmrError)
155 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
156 httpError = http.StatusInternalServerError
159 e2Error, _ := err.(*e2managererrors.InternalError)
160 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
161 httpError = http.StatusInternalServerError
164 errorResponse, _ := json.Marshal(errorResponseDetails)
166 c.logger.Errorf("[E2 Manager -> Client] #controller.handleErrorResponse - http status: %d, error response: %+v", httpError, errorResponseDetails)
168 writer.Header().Set("Content-Type", "application/json")
169 writer.WriteHeader(httpError)
170 _, err = writer.Write(errorResponse)
173 c.logger.Errorf("#controller.handleErrorResponse - Cannot send response. writer:%v", writer)