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"
26 "e2mgr/providers/httpmsghandlerprovider"
30 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/reader"
31 "github.com/gorilla/mux"
40 ParamRanName = "ranName"
44 type IController interface {
45 ShutdownHandler(writer http.ResponseWriter, r *http.Request)
46 X2ResetHandler(writer http.ResponseWriter, r *http.Request)
47 X2SetupHandler(writer http.ResponseWriter, r *http.Request)
48 EndcSetupHandler(writer http.ResponseWriter, r *http.Request)
51 type Controller struct {
53 handlerProvider *httpmsghandlerprovider.IncomingRequestHandlerProvider
56 func NewController(logger *logger.Logger, rmrService *services.RmrService, rNibReaderProvider func() reader.RNibReader, rNibWriterProvider func() rNibWriter.RNibWriter,
57 config *configuration.Configuration, ranSetupManager *managers.RanSetupManager) *Controller {
59 provider := httpmsghandlerprovider.NewIncomingRequestHandlerProvider(logger, rmrService, config, rNibWriterProvider, rNibReaderProvider, ranSetupManager)
62 handlerProvider: provider,
66 func (c *Controller) ShutdownHandler(writer http.ResponseWriter, r *http.Request) {
67 c.logger.Infof("[Client -> E2 Manager] #controller.ShutdownHandler - request: %v", c.prettifyRequest(r))
68 c.handleRequest(writer, &r.Header, httpmsghandlerprovider.ShutdownRequest, nil, false)
71 func (c *Controller) X2ResetHandler(writer http.ResponseWriter, r *http.Request) {
72 c.logger.Infof("[Client -> E2 Manager] #controller.X2ResetHandler - request: %v", c.prettifyRequest(r))
73 request := models.ResetRequest{}
75 ranName := vars[ParamRanName]
77 if r.ContentLength > 0 && !c.extractJsonBody(r, &request, writer) {
80 request.RanName = ranName
81 c.handleRequest(writer, &r.Header, httpmsghandlerprovider.ResetRequest, request, false)
84 func (c *Controller) X2SetupHandler(writer http.ResponseWriter, r *http.Request) {
85 c.logger.Infof("[Client -> E2 Manager] #controller.X2SetupHandler - request: %v", c.prettifyRequest(r))
87 request := models.SetupRequest{}
89 if !c.extractJsonBody(r, &request, writer) {
93 c.handleRequest(writer, &r.Header, httpmsghandlerprovider.X2SetupRequest, request, true)
96 func (c *Controller) EndcSetupHandler(writer http.ResponseWriter, r *http.Request) {
97 c.logger.Infof("[Client -> E2 Manager] #controller.EndcSetupHandler - request: %v", c.prettifyRequest(r))
99 request := models.SetupRequest{}
101 if !c.extractJsonBody(r, &request, writer) {
105 c.handleRequest(writer, &r.Header, httpmsghandlerprovider.EndcSetupRequest, request, true)
108 func (c *Controller) extractJsonBody(r *http.Request, request models.Request, writer http.ResponseWriter) bool {
110 body, err := ioutil.ReadAll(io.LimitReader(r.Body, LimitRequest))
113 c.logger.Errorf("[Client -> E2 Manager] #controller.extractJsonBody - unable to extract json body - error: %s", err)
114 c.handleErrorResponse(e2managererrors.NewInvalidJsonError(), writer)
118 err = json.Unmarshal(body, &request)
120 c.logger.Errorf("[Client -> E2 Manager] #controller.extractJsonBody - unable to extract json body - error: %s", err)
121 c.handleErrorResponse(e2managererrors.NewInvalidJsonError(), writer)
128 func (c *Controller) handleRequest(writer http.ResponseWriter, header *http.Header, requestName httpmsghandlerprovider.IncomingRequest,
129 request models.Request, validateHeader bool) {
133 err := c.validateRequestHeader(header)
135 c.handleErrorResponse(err, writer)
140 handler, err := c.handlerProvider.GetHandler(requestName)
143 c.handleErrorResponse(err, writer)
147 err = handler.Handle(request)
150 c.handleErrorResponse(err, writer)
154 writer.WriteHeader(http.StatusNoContent)
155 c.logger.Infof("[E2 Manager -> Client] #controller.handleRequest - status response: %v", http.StatusNoContent)
158 func (c *Controller) validateRequestHeader(header *http.Header) error {
160 if header.Get("Content-Type") != "application/json" {
161 c.logger.Errorf("#controller.validateRequestHeader - validation failure, incorrect content type")
163 return e2managererrors.NewHeaderValidationError()
168 func (c *Controller) handleErrorResponse(err error, writer http.ResponseWriter) {
170 var errorResponseDetails models.ErrorResponse
175 case *e2managererrors.RnibDbError:
176 e2Error, _ := err.(*e2managererrors.RnibDbError)
177 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
178 httpError = http.StatusInternalServerError
179 case *e2managererrors.CommandAlreadyInProgressError:
180 e2Error, _ := err.(*e2managererrors.CommandAlreadyInProgressError)
181 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
182 httpError = http.StatusMethodNotAllowed
183 case *e2managererrors.HeaderValidationError:
184 e2Error, _ := err.(*e2managererrors.HeaderValidationError)
185 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
186 httpError = http.StatusUnsupportedMediaType
187 case *e2managererrors.WrongStateError:
188 e2Error, _ := err.(*e2managererrors.WrongStateError)
189 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
190 httpError = http.StatusBadRequest
191 case *e2managererrors.RequestValidationError:
192 e2Error, _ := err.(*e2managererrors.RequestValidationError)
193 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
194 httpError = http.StatusBadRequest
195 case *e2managererrors.InvalidJsonError:
196 e2Error, _ := err.(*e2managererrors.InvalidJsonError)
197 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
198 httpError = http.StatusBadRequest
199 case *e2managererrors.RmrError:
200 e2Error, _ := err.(*e2managererrors.RmrError)
201 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
202 httpError = http.StatusInternalServerError
203 case *e2managererrors.ResourceNotFoundError:
204 e2Error, _ := err.(*e2managererrors.ResourceNotFoundError)
205 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
206 httpError = http.StatusNotFound
209 e2Error := e2managererrors.NewInternalError()
210 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
211 httpError = http.StatusInternalServerError
214 errorResponse, _ := json.Marshal(errorResponseDetails)
216 c.logger.Errorf("[E2 Manager -> Client] #controller.handleErrorResponse - http status: %d, error response: %+v", httpError, errorResponseDetails)
218 writer.Header().Set("Content-Type", "application/json")
219 writer.WriteHeader(httpError)
220 _, err = writer.Write(errorResponse)
223 c.logger.Errorf("#controller.handleErrorResponse - Cannot send response. writer:%v", writer)
227 func (c *Controller) prettifyRequest(request *http.Request) string {
228 dump, _ := httputil.DumpRequest(request, true)
229 requestPrettyPrint := strings.Replace(string(dump), "\r\n", " ", -1)
230 return strings.Replace(requestPrettyPrint, "\n", "", -1)