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"
36 ParamRanName = "ranName"
38 type Controller struct {
40 handlerProvider *providers.IncomingRequestHandlerProvider
43 func NewController(logger *logger.Logger, rmrService *services.RmrService, rNibReaderProvider func() reader.RNibReader, rNibWriterProvider func() rNibWriter.RNibWriter,
44 config *configuration.Configuration) *Controller {
46 provider := providers.NewIncomingRequestHandlerProvider(logger, rmrService, config, rNibWriterProvider, rNibReaderProvider)
49 handlerProvider: provider,
53 func (c *Controller)ShutdownHandler(writer http.ResponseWriter, r *http.Request, params httprouter.Params){
54 c.logger.Infof("[Client -> E2 Manager] #controller.ShutdownHandler - request: %v", prettifyRequest(r))
55 c.handleRequest(writer, &r.Header, providers.ShutdownRequest,nil, false, http.StatusNoContent)
58 func (c *Controller) X2ResetHandler(writer http.ResponseWriter, r *http.Request, params httprouter.Params){
59 startTime := time.Now()
60 c.logger.Infof("[Client -> E2 Manager] #controller.X2ResetHandler - request: %v", prettifyRequest(r))
61 request:= models.ResetRequest{}
62 ranName:= params.ByName(ParamRanName)
64 if !c.extractJsonBody(r, &request, writer){
67 request.RanName = ranName
68 request.StartTime = startTime
69 c.handleRequest(writer, &r.Header, providers.ResetRequest, request, false, http.StatusNoContent)
72 func (c *Controller) extractJsonBody(r *http.Request, request models.Request, writer http.ResponseWriter) bool{
73 if r.ContentLength <= 0 {
77 decoder := json.NewDecoder(r.Body)
78 if err := decoder.Decode(request); err != nil {
80 c.logger.Errorf("[Client -> E2 Manager] #controller.extractJsonBody - unable to extract json body - error: %s", err)
81 c.handleErrorResponse(e2managererrors.NewRequestValidationError(), writer)
89 func (c *Controller) handleRequest(writer http.ResponseWriter, header *http.Header, requestName providers.IncomingRequest,
90 request models.Request, validateHeader bool, httpStatusResponse int) {
92 c.logger.Infof("[Client -> E2 Manager] #controller.handleRequest - request: %v", requestName) //TODO print request if exist
96 err := c.validateRequestHeader(header)
98 c.handleErrorResponse(err, writer)
103 handler,err := c.handlerProvider.GetHandler(requestName)
105 c.handleErrorResponse(err, writer)
109 err = handler.Handle(c.logger, request)
112 c.handleErrorResponse(err, writer)
116 writer.WriteHeader(httpStatusResponse)
117 c.logger.Infof("[E2 Manager -> Client] #controller.handleRequest - status response: %v", httpStatusResponse)
120 func (c *Controller) validateRequestHeader( header *http.Header) error {
122 if header.Get("Content-Type") != "application/json"{
123 c.logger.Errorf("#controller.validateRequestHeader - validation failure, incorrect content type")
125 return e2managererrors.NewHeaderValidationError()
130 func (c *Controller) handleErrorResponse(err error, writer http.ResponseWriter){
132 var errorResponseDetails models.ErrorResponse
137 case *e2managererrors.RnibDbError:
138 e2Error, _ := err.(*e2managererrors.RnibDbError)
139 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
140 httpError = http.StatusInternalServerError
141 case *e2managererrors.CommandAlreadyInProgressError:
142 e2Error, _ := err.(*e2managererrors.CommandAlreadyInProgressError)
143 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
144 httpError = http.StatusMethodNotAllowed
145 case *e2managererrors.HeaderValidationError:
146 e2Error, _ := err.(*e2managererrors.HeaderValidationError)
147 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
148 httpError = http.StatusUnsupportedMediaType
149 case *e2managererrors.WrongStateError:
150 e2Error, _ := err.(*e2managererrors.WrongStateError)
151 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
152 httpError = http.StatusBadRequest
153 case *e2managererrors.RequestValidationError:
154 e2Error, _ := err.(*e2managererrors.RequestValidationError)
155 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
156 httpError = http.StatusBadRequest
157 case *e2managererrors.RmrError:
158 e2Error, _ := err.(*e2managererrors.RmrError)
159 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
160 httpError = http.StatusInternalServerError
161 case *e2managererrors.ResourceNotFoundError:
162 e2Error, _ := err.(*e2managererrors.ResourceNotFoundError)
163 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
164 httpError = http.StatusNotFound
167 e2Error := e2managererrors.NewInternalError()
168 errorResponseDetails = models.ErrorResponse{Code: e2Error.Err.Code, Message: e2Error.Err.Message}
169 httpError = http.StatusInternalServerError
172 errorResponse, _ := json.Marshal(errorResponseDetails)
174 c.logger.Errorf("[E2 Manager -> Client] #controller.handleErrorResponse - http status: %d, error response: %+v", httpError, errorResponseDetails)
176 writer.Header().Set("Content-Type", "application/json")
177 writer.WriteHeader(httpError)
178 _, err = writer.Write(errorResponse)
181 c.logger.Errorf("#controller.handleErrorResponse - Cannot send response. writer:%v", writer)