294 lines
10 KiB
Go
294 lines
10 KiB
Go
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//
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// Copyright 2019 AT&T Intellectual Property
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// Copyright 2019 Nokia
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// This source code is part of the near-RT RIC (RAN Intelligent Controller)
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// platform project (RICP).
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package controllers
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import (
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"e2mgr/e2managererrors"
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"e2mgr/logger"
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"e2mgr/models"
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"e2mgr/providers/httpmsghandlerprovider"
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"encoding/json"
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"gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
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"github.com/golang/protobuf/jsonpb"
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"github.com/golang/protobuf/proto"
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"github.com/gorilla/mux"
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"io"
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"io/ioutil"
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"net/http"
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"net/http/httputil"
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"strings"
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)
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const (
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ParamRanName = "ranName"
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LimitRequest = 2000
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)
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type INodebController interface {
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Shutdown(writer http.ResponseWriter, r *http.Request)
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X2Reset(writer http.ResponseWriter, r *http.Request)
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X2Setup(writer http.ResponseWriter, r *http.Request)
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EndcSetup(writer http.ResponseWriter, r *http.Request)
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GetNodeb(writer http.ResponseWriter, r *http.Request)
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UpdateGnb(writer http.ResponseWriter, r *http.Request)
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GetNodebIdList(writer http.ResponseWriter, r *http.Request)
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}
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type NodebController struct {
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logger *logger.Logger
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handlerProvider *httpmsghandlerprovider.IncomingRequestHandlerProvider
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}
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func NewNodebController(logger *logger.Logger, handlerProvider *httpmsghandlerprovider.IncomingRequestHandlerProvider) *NodebController {
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return &NodebController{
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logger: logger,
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handlerProvider: handlerProvider,
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}
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}
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func (c *NodebController) GetNodebIdList(writer http.ResponseWriter, r *http.Request) {
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c.logger.Infof("[Client -> E2 Manager] #NodebController.GetNodebIdList - request: %v", c.prettifyRequest(r))
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c.handleRequest(writer, &r.Header, httpmsghandlerprovider.GetNodebIdListRequest, nil, false)
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}
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func (c *NodebController) GetNodeb(writer http.ResponseWriter, r *http.Request) {
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c.logger.Infof("[Client -> E2 Manager] #NodebController.GetNodeb - request: %v", c.prettifyRequest(r))
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vars := mux.Vars(r)
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ranName := vars["ranName"]
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request := models.GetNodebRequest{RanName: ranName}
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c.handleRequest(writer, &r.Header, httpmsghandlerprovider.GetNodebRequest, request, false)
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}
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func (c *NodebController) UpdateGnb(writer http.ResponseWriter, r *http.Request) {
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c.logger.Infof("[Client -> E2 Manager] #NodebController.UpdateGnb - request: %v", c.prettifyRequest(r))
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vars := mux.Vars(r)
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ranName := vars[ParamRanName]
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request := models.UpdateGnbRequest{}
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gnb := entities.Gnb{}
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if !c.extractRequestBodyToProto(r, &gnb, writer) {
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return
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}
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request.Gnb = &gnb;
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request.RanName = ranName
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c.handleRequest(writer, &r.Header, httpmsghandlerprovider.UpdateGnbRequest, request, true)
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}
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func (c *NodebController) Shutdown(writer http.ResponseWriter, r *http.Request) {
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c.logger.Infof("[Client -> E2 Manager] #NodebController.Shutdown - request: %v", c.prettifyRequest(r))
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c.handleRequest(writer, &r.Header, httpmsghandlerprovider.ShutdownRequest, nil, false)
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}
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func (c *NodebController) X2Reset(writer http.ResponseWriter, r *http.Request) {
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c.logger.Infof("[Client -> E2 Manager] #NodebController.X2Reset - request: %v", c.prettifyRequest(r))
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request := models.ResetRequest{}
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vars := mux.Vars(r)
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ranName := vars[ParamRanName]
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if r.ContentLength > 0 && !c.extractJsonBody(r, &request, writer) {
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return
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}
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request.RanName = ranName
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c.handleRequest(writer, &r.Header, httpmsghandlerprovider.ResetRequest, request, false)
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}
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func (c *NodebController) X2Setup(writer http.ResponseWriter, r *http.Request) {
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c.logger.Infof("[Client -> E2 Manager] #NodebController.X2Setup - request: %v", c.prettifyRequest(r))
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request := models.SetupRequest{}
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if !c.extractJsonBody(r, &request, writer) {
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return
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}
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c.handleRequest(writer, &r.Header, httpmsghandlerprovider.X2SetupRequest, request, true)
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}
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func (c *NodebController) EndcSetup(writer http.ResponseWriter, r *http.Request) {
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c.logger.Infof("[Client -> E2 Manager] #NodebController.EndcSetup - request: %v", c.prettifyRequest(r))
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request := models.SetupRequest{}
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if !c.extractJsonBody(r, &request, writer) {
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return
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}
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c.handleRequest(writer, &r.Header, httpmsghandlerprovider.EndcSetupRequest, request, true)
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}
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func (c *NodebController) extractRequestBodyToProto(r *http.Request, pb proto.Message , writer http.ResponseWriter) bool {
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defer r.Body.Close()
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err := jsonpb.Unmarshal(r.Body, pb)
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if err != nil {
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c.logger.Errorf("[Client -> E2 Manager] #NodebController.extractJsonBody - unable to extract json body - error: %s", err)
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c.handleErrorResponse(e2managererrors.NewInvalidJsonError(), writer)
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return false
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}
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return true
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}
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func (c *NodebController) extractJsonBody(r *http.Request, request models.Request, writer http.ResponseWriter) bool {
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defer r.Body.Close()
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body, err := ioutil.ReadAll(io.LimitReader(r.Body, LimitRequest))
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if err != nil {
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c.logger.Errorf("[Client -> E2 Manager] #NodebController.extractJsonBody - unable to extract json body - error: %s", err)
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c.handleErrorResponse(e2managererrors.NewInvalidJsonError(), writer)
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return false
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}
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err = json.Unmarshal(body, &request)
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if err != nil {
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c.logger.Errorf("[Client -> E2 Manager] #NodebController.extractJsonBody - unable to extract json body - error: %s", err)
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c.handleErrorResponse(e2managererrors.NewInvalidJsonError(), writer)
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return false
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}
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return true
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}
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func (c *NodebController) handleRequest(writer http.ResponseWriter, header *http.Header, requestName httpmsghandlerprovider.IncomingRequest, request models.Request, validateRequestHeaders bool) {
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if validateRequestHeaders {
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err := c.validateRequestHeader(header)
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if err != nil {
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c.handleErrorResponse(err, writer)
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return
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}
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}
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handler, err := c.handlerProvider.GetHandler(requestName)
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if err != nil {
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c.handleErrorResponse(err, writer)
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return
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}
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response, err := handler.Handle(request)
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if err != nil {
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c.handleErrorResponse(err, writer)
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return
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}
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if response == nil {
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writer.WriteHeader(http.StatusNoContent)
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c.logger.Infof("[E2 Manager -> Client] #NodebController.handleRequest - status response: %v", http.StatusNoContent)
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return
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}
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result, err := response.Marshal()
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if err != nil {
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c.handleErrorResponse(err, writer)
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return
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}
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c.logger.Infof("[E2 Manager -> Client] #NodebController.handleRequest - response: %s", result)
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writer.Header().Set("Content-Type", "application/json")
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writer.Write(result)
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}
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func (c *NodebController) validateRequestHeader(header *http.Header) error {
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if header.Get("Content-Type") != "application/json" {
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c.logger.Errorf("#NodebController.validateRequestHeader - validation failure, incorrect content type")
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return e2managererrors.NewHeaderValidationError()
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}
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return nil
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}
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func (c *NodebController) handleErrorResponse(err error, writer http.ResponseWriter) {
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var errorResponseDetails models.ErrorResponse
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var httpError int
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if err != nil {
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switch err.(type) {
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case *e2managererrors.RnibDbError:
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e2Error, _ := err.(*e2managererrors.RnibDbError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusInternalServerError
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case *e2managererrors.CommandAlreadyInProgressError:
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e2Error, _ := err.(*e2managererrors.CommandAlreadyInProgressError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusMethodNotAllowed
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case *e2managererrors.HeaderValidationError:
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e2Error, _ := err.(*e2managererrors.HeaderValidationError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusUnsupportedMediaType
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case *e2managererrors.WrongStateError:
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e2Error, _ := err.(*e2managererrors.WrongStateError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusBadRequest
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case *e2managererrors.RequestValidationError:
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e2Error, _ := err.(*e2managererrors.RequestValidationError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusBadRequest
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case *e2managererrors.InvalidJsonError:
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e2Error, _ := err.(*e2managererrors.InvalidJsonError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusBadRequest
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case *e2managererrors.RmrError:
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e2Error, _ := err.(*e2managererrors.RmrError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusInternalServerError
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case *e2managererrors.ResourceNotFoundError:
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e2Error, _ := err.(*e2managererrors.ResourceNotFoundError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusNotFound
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case *e2managererrors.E2TInstanceAbsenceError:
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e2Error, _ := err.(*e2managererrors.E2TInstanceAbsenceError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusServiceUnavailable
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case *e2managererrors.RoutingManagerError:
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e2Error, _ := err.(*e2managererrors.RoutingManagerError)
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusServiceUnavailable
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default:
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e2Error := e2managererrors.NewInternalError()
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errorResponseDetails = models.ErrorResponse{Code: e2Error.Code, Message: e2Error.Message}
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httpError = http.StatusInternalServerError
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}
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}
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errorResponse, _ := json.Marshal(errorResponseDetails)
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c.logger.Errorf("[E2 Manager -> Client] #NodebController.handleErrorResponse - http status: %d, error response: %+v", httpError, errorResponseDetails)
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writer.Header().Set("Content-Type", "application/json")
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writer.WriteHeader(httpError)
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_, err = writer.Write(errorResponse)
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}
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func (c *NodebController) prettifyRequest(request *http.Request) string {
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dump, _ := httputil.DumpRequest(request, true)
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requestPrettyPrint := strings.Replace(string(dump), "\r\n", " ", -1)
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return strings.Replace(requestPrettyPrint, "\n", "", -1)
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}
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