--- /dev/null
+/*
+ * Copyright (c) 2020 AT&T Intellectual Property.
+ * Copyright (c) 2020 Nokiv.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This source code is part of the near-RT RIC (RAN Intelligent Controller)
+ * platform project (RICP).
+ */
+
+package main
+
+import (
+ "bytes"
+ "encoding/json"
+ "fmt"
+ "io/ioutil"
+ "net/http"
+ "os"
+ "strings"
+ "time"
+
+ app "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
+)
+
+func NewVespaMgr() *VespaMgr {
+ return &VespaMgr{
+ rmrReady: false,
+ chVesagent: make(chan error),
+ appmgrHost: app.Config.GetString("controls.appManager.host"),
+ appmgrUrl: app.Config.GetString("controls.appManager.path"),
+ appmgrNotifUrl: app.Config.GetString("controls.appManager.notificationUrl"),
+ appmgrSubsUrl: app.Config.GetString("controls.appManager.subscriptionUrl"),
+ appmgrRetry: app.Config.GetInt("controls.appManager.appmgrRetry"),
+ hbInterval: app.Config.GetString("controls.vesagent.hbInterval"),
+ measInterval: app.Config.GetString("controls.vesagent.measInterval"),
+ prometheusAddr: app.Config.GetString("controls.vesagent.prometheusAddr"),
+ alertManagerBindAddr: app.Config.GetString("controls.vesagent.alertManagerBindAddr"),
+ }
+}
+
+func (v *VespaMgr) Run(sdlcheck, runXapp bool) {
+ app.Logger.SetMdc("vespamgr", fmt.Sprintf("%s:%s", Version, Hash))
+ app.SetReadyCB(func(d interface{}) { v.rmrReady = true }, true)
+ app.Resource.InjectStatusCb(v.StatusCB)
+ app.AddConfigChangeListener(v.ConfigChangeCB)
+
+ measUrl := app.Config.GetString("controls.measurementUrl")
+ app.Resource.InjectRoute(v.appmgrNotifUrl, v.HandlexAppNotification, "POST")
+ app.Resource.InjectRoute(measUrl, v.HandleMeasurements, "POST")
+ app.Resource.InjectRoute("/supervision", v.HandleSupervision, "GET") // @todo: remove this
+
+ go v.SubscribeXappNotif(fmt.Sprintf("%s%s", v.appmgrHost, v.appmgrSubsUrl))
+
+ if runXapp {
+ app.RunWithParams(v, sdlcheck)
+ }
+}
+
+func (v *VespaMgr) Consume(rp *app.RMRParams) (err error) {
+ app.Logger.Info("Message received!")
+
+ app.Rmr.Free(rp.Mbuf)
+ return nil
+}
+
+func (v *VespaMgr) StatusCB() bool {
+ if !v.rmrReady {
+ app.Logger.Info("RMR not ready yet!")
+ }
+
+ return v.rmrReady
+}
+
+func (v *VespaMgr) ConfigChangeCB(configparam string) {
+ return
+}
+
+func (v *VespaMgr) CreateConf(fname string, xappMetrics []byte) {
+ f, err := os.Create(fname)
+ if err != nil {
+ app.Logger.Error("os.Create failed: %s", err.Error())
+ return
+ }
+ defer f.Close()
+
+ v.CreateConfig(f, xappMetrics)
+}
+
+func (v *VespaMgr) QueryXappConf(appmgrUrl string) (appConfig []byte, err error) {
+ client := http.Client{Timeout: 10 * time.Second}
+
+ for i := 0; i < v.appmgrRetry; i++ {
+ app.Logger.Info("Getting xApp config from: %s [%d]", appmgrUrl, v.appmgrRetry)
+
+ resp, err := client.Get(appmgrUrl)
+ if err != nil || resp == nil {
+ app.Logger.Error("client.Get failed: %v", err)
+ time.Sleep(5 * time.Second)
+ continue
+ }
+
+ defer resp.Body.Close()
+ appConfig, err := ioutil.ReadAll(resp.Body)
+ if err != nil {
+ app.Logger.Error("ioutil.ReadAll failed: %v", err)
+ time.Sleep(5 * time.Second)
+ continue
+ }
+
+ app.Logger.Info("Received xApp config: %d", len(appConfig))
+ if len(appConfig) > 0 {
+ return appConfig, err
+ }
+ }
+
+ return appConfig, err
+}
+
+func (v *VespaMgr) ReadPayload(w http.ResponseWriter, r *http.Request) ([]byte, error) {
+ payload, err := ioutil.ReadAll(r.Body)
+ defer r.Body.Close()
+ if err != nil {
+ app.Logger.Error("ioutil.ReadAll failed: %v", err)
+ return payload, err
+ }
+ v.respondWithJSON(w, http.StatusOK, err)
+
+ return payload, err
+}
+
+func (v *VespaMgr) HandleSupervision(w http.ResponseWriter, r *http.Request) {
+ v.respondWithJSON(w, http.StatusOK, nil)
+}
+
+func (v *VespaMgr) HandleMeasurements(w http.ResponseWriter, r *http.Request) {
+ app.Logger.Info("HandleMeasurements called!")
+ if appConfig, err := v.ReadPayload(w, r); err == nil {
+ v.CreateConf(app.Config.GetString("controls.vesagent.configFile"), appConfig)
+ }
+}
+
+func (v *VespaMgr) HandlexAppNotification(w http.ResponseWriter, r *http.Request) {
+ if _, err := v.ReadPayload(w, r); err != nil {
+ return
+ }
+
+ app.Logger.Info("xApp event notification received!")
+ if appConfig, err := v.QueryXappConf(fmt.Sprintf("%s%s", v.appmgrHost, v.appmgrUrl)); err == nil {
+ v.CreateConf(app.Config.GetString("controls.vesagent.configFile"), appConfig)
+ v.RestartVesagent()
+ }
+}
+
+func (v *VespaMgr) DoSubscribe(appmgrUrl string, subscriptionData []byte) string {
+ resp, err := http.Post(appmgrUrl, "application/json", bytes.NewBuffer(subscriptionData))
+ if err != nil || resp == nil || resp.StatusCode != http.StatusCreated {
+ app.Logger.Error("http.Post failed: %s", err)
+ return ""
+ }
+
+ body, err := ioutil.ReadAll(resp.Body)
+ if err != nil {
+ app.Logger.Error("ioutil.ReadAll for body failed: %s", err)
+ return ""
+ }
+
+ var result map[string]interface{}
+ if err := json.Unmarshal([]byte(body), &result); err != nil {
+ app.Logger.Error("json.Unmarshal failed: %s", err)
+ return ""
+ }
+ v.subscriptionId = result["id"].(string)
+ app.Logger.Info("Subscription id from the response: %s", v.subscriptionId)
+
+ return v.subscriptionId
+}
+
+func (v *VespaMgr) SubscribeXappNotif(appmgrUrl string) {
+ targetUrl := fmt.Sprintf("%s%s", app.Config.GetString("controls.host"), v.appmgrNotifUrl)
+ subscriptionData := []byte(fmt.Sprintf(`{"Data": {"maxRetries": 5, "retryTimer": 5, "eventType":"all", "targetUrl": "%v"}}`, targetUrl))
+
+ for {
+ app.Logger.Info("Subscribing xApp notification from: %v", appmgrUrl)
+
+ if id := v.DoSubscribe(appmgrUrl, subscriptionData); id != "" {
+ app.Logger.Info("Subscription done, id=%s", id)
+ break
+ }
+
+ app.Logger.Info("Subscription failed, retyring after short delay ...")
+ time.Sleep(5 * time.Second)
+ }
+
+ if xappConfig, err := v.QueryXappConf(fmt.Sprintf("%s%s", v.appmgrHost, v.appmgrUrl)); err == nil {
+ v.CreateConf(app.Config.GetString("controls.vesagent.configFile"), xappConfig)
+ v.RestartVesagent()
+ }
+}
+
+func (v *VespaMgr) respondWithJSON(w http.ResponseWriter, code int, payload interface{}) {
+ w.Header().Set("Content-Type", "application/json")
+ w.WriteHeader(code)
+ if payload != nil {
+ response, _ := json.Marshal(payload)
+ w.Write(response)
+ }
+}
+
+func (v *VespaMgr) StartVesagent() {
+ v.vesAgent = NewCommandRunner("ves-agent", "-i", v.hbInterval, "-m", v.measInterval, "--Debug",
+ "--Measurement.Prometheus.Address", v.prometheusAddr, "--AlertManager.Bind", v.alertManagerBindAddr)
+
+ v.vesAgent.Run(v.chVesagent)
+}
+
+func (v *VespaMgr) RestartVesagent() {
+ if strings.Contains(app.Config.GetString("controls.host"), "localhost") {
+ return
+ }
+
+ if v.vesAgent != nil {
+ err := v.vesAgent.Kill()
+ if err != nil {
+ app.Logger.Error("Couldn't kill vespa-agent: %s", err.Error())
+ return
+ }
+ <-v.chVesagent
+ }
+
+ v.StartVesagent()
+}
+
+func main() {
+ NewVespaMgr().Run(false, true)
+}
Code Review / ric-plt / vespamgr.git / blobdiff