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.
17 // This source code is part of the near-RT RIC (RAN Intelligent Controller)
18 // platform project (RICP).
23 type IController interface {
34 "rsm/providers/httpmsghandlerprovider"
43 type IController interface {
46 type Controller struct {
48 handlerProvider *httpmsghandlerprovider.RequestHandlerProvider
51 func NewController(logger *logger.Logger, handlerProvider *httpmsghandlerprovider.RequestHandlerProvider) *Controller {
54 handlerProvider: handlerProvider,
58 func (c *Controller) extractJsonBody(r *http.Request, request models.Request, writer http.ResponseWriter) bool {
60 body, err := ioutil.ReadAll(io.LimitReader(r.Body, LimitRequest))
63 c.logger.Errorf("[Client -> RSM] #Controller.extractJsonBody - unable to extract json body - error: %s", err)
64 c.handleErrorResponse(rsmerrors.NewInvalidJsonError(), writer)
68 err = json.Unmarshal(body, &request)
70 c.logger.Errorf("[Client -> RSM] #Controller.extractJsonBody - unable to extract json body - error: %s", err)
71 c.handleErrorResponse(rsmerrors.NewInvalidJsonError(), writer)
78 func (c *Controller) handleRequest(writer http.ResponseWriter, header *http.Header, requestName httpmsghandlerprovider.IncomingRequest, request models.Request, validateHeader bool) {
82 err := c.validateRequestHeader(header)
84 c.handleErrorResponse(err, writer)
89 handler, err := c.handlerProvider.GetHandler(requestName)
92 c.handleErrorResponse(err, writer)
96 response, err := (*handler).Handle(request)
99 c.handleErrorResponse(err, writer)
104 writer.WriteHeader(http.StatusNoContent)
105 c.logger.Infof("[RSM -> Client] #Controller.handleRequest - status response: %v", http.StatusNoContent)
109 result, err := response.Marshal()
112 c.handleErrorResponse(err, writer)
116 c.logger.Infof("[RSM -> Client] #Controller.handleRequest - response: %s", result)
117 writer.Header().Set("Content-Type", "application/json")
118 writer.Write([]byte(result))
121 func (c *Controller) validateRequestHeader(header *http.Header) error {
123 if header.Get("Content-Type") != "application/json" {
124 c.logger.Errorf("#Controller.validateRequestHeader - validation failure, incorrect content type")
126 return rsmerrors.NewHeaderValidationError()
131 func (c *Controller) handleErrorResponse(err error, writer http.ResponseWriter) {
133 var errorResponseDetails models.ErrorResponse
138 case *rsmerrors.RnibDbError:
139 e2Error, _ := err.(*rsmerrors.RnibDbError)
140 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
141 httpError = http.StatusInternalServerError
142 case *rsmerrors.HeaderValidationError:
143 e2Error, _ := err.(*rsmerrors.HeaderValidationError)
144 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
145 httpError = http.StatusUnsupportedMediaType
146 case *rsmerrors.WrongStateError:
147 e2Error, _ := err.(*rsmerrors.WrongStateError)
148 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
149 httpError = http.StatusBadRequest
150 case *rsmerrors.RequestValidationError:
151 e2Error, _ := err.(*rsmerrors.RequestValidationError)
152 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
153 httpError = http.StatusBadRequest
154 case *rsmerrors.InvalidJsonError:
155 e2Error, _ := err.(*rsmerrors.InvalidJsonError)
156 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
157 httpError = http.StatusBadRequest
158 case *rsmerrors.RmrError:
159 e2Error, _ := err.(*rsmerrors.RmrError)
160 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
161 httpError = http.StatusInternalServerError
162 case *rsmerrors.ResourceNotFoundError:
163 e2Error, _ := err.(*rsmerrors.ResourceNotFoundError)
164 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
165 httpError = http.StatusNotFound
168 e2Error := rsmerrors.NewInternalError()
169 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
170 httpError = http.StatusInternalServerError
173 errorResponse, _ := json.Marshal(errorResponseDetails)
175 c.logger.Errorf("[RSM -> Client] #Controller.handleErrorResponse - http status: %d, error response: %+v", httpError, errorResponseDetails)
177 writer.Header().Set("Content-Type", "application/json")
178 writer.WriteHeader(httpError)
179 _, err = writer.Write(errorResponse)
182 c.logger.Errorf("#Controller.handleErrorResponse - Cannot send response. writer:%v", writer)
186 func (c *Controller) prettifyRequest(request *http.Request) string {
187 dump, _ := httputil.DumpRequest(request, true)
188 requestPrettyPrint := strings.Replace(string(dump), "\r\n", " ", -1)
189 return strings.Replace(requestPrettyPrint, "\n", "", -1)