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).
31 "rsm/providers/httpmsghandlerprovider"
40 type IController interface {
41 ResourceStatus(writer http.ResponseWriter, r *http.Request)
44 type Controller struct {
46 handlerProvider *httpmsghandlerprovider.RequestHandlerProvider
49 func NewController(logger *logger.Logger, handlerProvider *httpmsghandlerprovider.RequestHandlerProvider) *Controller {
52 handlerProvider: handlerProvider,
56 func (c *Controller) ResourceStatus(writer http.ResponseWriter, r *http.Request) {
57 c.logger.Infof("[Client -> RSM] #Controller.ResourceStatus - request: %v", c.prettifyRequest(r))
59 request := models.ResourceStatusRequest{}
61 if !c.extractJsonBody(r, &request, writer) {
65 c.handleRequest(writer, &r.Header, httpmsghandlerprovider.ResourceStatusRequest, request, true)
68 func (c *Controller) extractJsonBody(r *http.Request, request models.Request, writer http.ResponseWriter) bool {
70 body, err := ioutil.ReadAll(io.LimitReader(r.Body, LimitRequest))
73 c.logger.Errorf("[Client -> RSM] #Controller.extractJsonBody - unable to extract json body - error: %s", err)
74 c.handleErrorResponse(rsmerrors.NewInvalidJsonError(), writer)
78 err = json.Unmarshal(body, &request)
80 c.logger.Errorf("[Client -> RSM] #Controller.extractJsonBody - unable to extract json body - error: %s", err)
81 c.handleErrorResponse(rsmerrors.NewInvalidJsonError(), writer)
88 func (c *Controller) handleRequest(writer http.ResponseWriter, header *http.Header, requestName httpmsghandlerprovider.IncomingRequest, request models.Request, validateHeader bool) {
92 err := c.validateRequestHeader(header)
94 c.handleErrorResponse(err, writer)
99 handler, err := c.handlerProvider.GetHandler(requestName)
102 c.handleErrorResponse(err, writer)
106 err = handler.Handle(request)
109 c.handleErrorResponse(err, writer)
113 writer.WriteHeader(http.StatusNoContent)
114 c.logger.Infof("[RSM -> Client] #Controller.handleRequest - status response: %v", http.StatusNoContent)
117 func (c *Controller) validateRequestHeader(header *http.Header) error {
119 if header.Get("Content-Type") != "application/json" {
120 c.logger.Errorf("#Controller.validateRequestHeader - validation failure, incorrect content type")
122 return rsmerrors.NewHeaderValidationError()
127 func (c *Controller) handleErrorResponse(err error, writer http.ResponseWriter) {
129 var errorResponseDetails models.ErrorResponse
134 case *rsmerrors.RnibDbError:
135 e2Error, _ := err.(*rsmerrors.RnibDbError)
136 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
137 httpError = http.StatusInternalServerError
138 case *rsmerrors.HeaderValidationError:
139 e2Error, _ := err.(*rsmerrors.HeaderValidationError)
140 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
141 httpError = http.StatusUnsupportedMediaType
142 case *rsmerrors.WrongStateError:
143 e2Error, _ := err.(*rsmerrors.WrongStateError)
144 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
145 httpError = http.StatusBadRequest
146 case *rsmerrors.RequestValidationError:
147 e2Error, _ := err.(*rsmerrors.RequestValidationError)
148 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
149 httpError = http.StatusBadRequest
150 case *rsmerrors.InvalidJsonError:
151 e2Error, _ := err.(*rsmerrors.InvalidJsonError)
152 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
153 httpError = http.StatusBadRequest
154 case *rsmerrors.RmrError:
155 e2Error, _ := err.(*rsmerrors.RmrError)
156 errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
157 httpError = http.StatusInternalServerError
158 case *rsmerrors.RsmError:
159 e2Error, _ := err.(*rsmerrors.RsmError)
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)
185 func (c *Controller) prettifyRequest(request *http.Request) string {
186 dump, _ := httputil.DumpRequest(request, true)
187 requestPrettyPrint := strings.Replace(string(dump), "\r\n", " ", -1)
188 return strings.Replace(requestPrettyPrint, "\n", "", -1)