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).
25 "e2mgr/e2managererrors"
33 AddE2TInstanceApiSuffix = "e2t"
34 AssociateRanToE2TInstanceApiSuffix = "associate-ran-to-e2t"
35 DissociateRanE2TInstanceApiSuffix = "dissociate-ran"
36 DeleteE2TInstanceApiSuffix = "e2t"
39 type RoutingManagerClient struct {
41 config *configuration.Configuration
42 httpClient IHttpClient
45 type IRoutingManagerClient interface {
46 AddE2TInstance(e2tAddress string) error
47 AssociateRanToE2TInstance(e2tAddress string, ranName string) error
48 DissociateRanE2TInstance(e2tAddress string, ranName string) error
49 DissociateAllRans(e2tAddresses []string) error
50 DeleteE2TInstance(e2tAddress string, ransToBeDissociated []string) error
53 func NewRoutingManagerClient(logger *logger.Logger, config *configuration.Configuration, httpClient IHttpClient) *RoutingManagerClient {
54 return &RoutingManagerClient{
57 httpClient: httpClient,
61 func (c *RoutingManagerClient) AddE2TInstance(e2tAddress string) error {
63 data := models.NewRoutingManagerE2TData(e2tAddress)
64 url := c.config.RoutingManager.BaseUrl + AddE2TInstanceApiSuffix
66 return c.PostMessage(url, data)
69 func (c *RoutingManagerClient) AssociateRanToE2TInstance(e2tAddress string, ranName string) error {
71 data := models.RoutingManagerE2TDataList{models.NewRoutingManagerE2TData(e2tAddress, ranName)}
72 url := c.config.RoutingManager.BaseUrl + AssociateRanToE2TInstanceApiSuffix
74 return c.PostMessage(url, data)
77 func (c *RoutingManagerClient) DissociateRanE2TInstance(e2tAddress string, ranName string) error {
79 data := models.RoutingManagerE2TDataList{models.NewRoutingManagerE2TData(e2tAddress, ranName)}
80 url := c.config.RoutingManager.BaseUrl + DissociateRanE2TInstanceApiSuffix
82 return c.PostMessage(url, data)
85 func (c *RoutingManagerClient) DissociateAllRans(e2tAddresses []string) error {
87 data := mapE2TAddressesToE2DataList(e2tAddresses)
88 url := c.config.RoutingManager.BaseUrl + DissociateRanE2TInstanceApiSuffix
90 return c.PostMessage(url, data)
93 func (c *RoutingManagerClient) DeleteE2TInstance(e2tAddress string, ransTobeDissociated []string) error {
94 data := models.NewRoutingManagerDeleteRequestModel(e2tAddress, ransTobeDissociated, nil)
95 url := c.config.RoutingManager.BaseUrl + DeleteE2TInstanceApiSuffix
96 return c.DeleteMessage(url, data)
99 func (c *RoutingManagerClient) sendMessage(method string, url string, data interface{}) error {
100 marshaled, err := json.Marshal(data)
103 return e2managererrors.NewRoutingManagerError()
106 body := bytes.NewBuffer(marshaled)
107 c.logger.Infof("[E2 Manager -> Routing Manager] #RoutingManagerClient.sendMessage - %s url: %s, request body: %+v", method, url, body)
109 var resp *http.Response
111 if method == http.MethodPost {
112 resp, err = c.httpClient.Post(url, "application/json", body)
113 } else if method == http.MethodDelete {
114 resp, err = c.httpClient.Delete(url, "application/json", body)
118 c.logger.Errorf("#RoutingManagerClient.sendMessage - failed sending request. error: %s", err)
119 return e2managererrors.NewRoutingManagerError()
122 if resp.Body != nil {
123 defer resp.Body.Close()
126 if resp.StatusCode >= http.StatusOK && resp.StatusCode < http.StatusMultipleChoices {
127 c.logger.Infof("[Routing Manager -> E2 Manager] #RoutingManagerClient.sendMessage - success. http status code: %d", resp.StatusCode)
131 c.logger.Errorf("[Routing Manager -> E2 Manager] #RoutingManagerClient.sendMessage - failure. http status code: %d", resp.StatusCode)
132 return e2managererrors.NewRoutingManagerError()
135 func (c *RoutingManagerClient) DeleteMessage(url string, data interface{}) error {
136 return c.sendMessage(http.MethodDelete, url, data)
139 func (c *RoutingManagerClient) PostMessage(url string, data interface{}) error {
140 return c.sendMessage(http.MethodPost, url, data)
143 func mapE2TAddressesToE2DataList(e2tAddresses []string) models.RoutingManagerE2TDataList {
144 e2tDataList := make(models.RoutingManagerE2TDataList, len(e2tAddresses))
146 for i, v := range e2tAddresses {
147 e2tDataList[i] = models.NewRoutingManagerE2TData(v)
153 func convertE2TToRansAssociationsMapToE2TDataList(e2tToRansAssociations map[string][]string) models.RoutingManagerE2TDataList {
154 e2tDataList := make(models.RoutingManagerE2TDataList, len(e2tToRansAssociations))
156 for k, v := range e2tToRansAssociations {
157 e2tDataList[i] = models.NewRoutingManagerE2TData(k, v...)