--- /dev/null
+// -
+// ========================LICENSE_START=================================
+// O-RAN-SC
+// %%
+// Copyright (C) 2021: Nordix Foundation
+// %%
+// 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.
+// ========================LICENSE_END===================================
+//
+
+package sliceassurance
+
+import (
+ "fmt"
+ "net/http"
+ "strconv"
+ "time"
+
+ "oransc.org/usecase/oduclosedloop/internal/restclient"
+ "oransc.org/usecase/oduclosedloop/internal/structures"
+ "oransc.org/usecase/oduclosedloop/messages"
+)
+
+const (
+ THRESHOLD_TPUT = 700
+ DEFAULT_DEDICATED_RATIO = 40
+ NEW_DEDICATED_RATIO = 50
+ NODE_ID = "O-DU-1211"
+)
+
+type App struct {
+ Client restclient.HTTPClient
+ MetricsPolicies *structures.SliceAssuranceMeas
+}
+
+var dmaapMRUrl string
+var SDNRUrl string
+
+func (a *App) Initialize(dmaapUrl string, sdnrUrl string) {
+ dmaapMRUrl = dmaapUrl
+ SDNRUrl = sdnrUrl
+
+ a.Client = restclient.New(&http.Client{})
+ a.MetricsPolicies = structures.NewSliceAssuranceMeas()
+}
+
+func (a *App) Run(topic string, pollTime int) {
+ for {
+ fmt.Printf("Polling new messages from DmaapMR\n")
+ var stdMessage messages.StdDefinedMessage
+
+ a.Client.Get(dmaapMRUrl+topic, &stdMessage)
+
+ a.processMessages(stdMessage)
+
+ exceedsThMetrics := a.checkIfThresholdIsExceed()
+ if len(exceedsThMetrics) > 0 {
+ a.updateDedicatedRatio(exceedsThMetrics)
+ }
+
+ time.Sleep(time.Second * time.Duration(pollTime))
+ }
+}
+
+func (a *App) processMessages(stdMessage messages.StdDefinedMessage) {
+
+ for _, meas := range stdMessage.GetMeasurements() {
+
+ fmt.Printf("New measurement: %+v\n", meas)
+ //Create sliceMetric and check if metric exist and update existing one or create new one
+ tmpSm := meas.CreateSliceMetric()
+ a.MetricsPolicies.AddOrUpdateMetric(tmpSm)
+
+ //Fetch policy ratio metrics from SDNR
+ var duRRMPolicyRatio messages.ORanDuRestConf
+ a.Client.Get(getUrlForDistributedUnitFunctions(SDNRUrl, tmpSm.DUId), &duRRMPolicyRatio)
+
+ //Get DuId and check if we have metrics for it
+ policyRatioDuId := duRRMPolicyRatio.DistributedUnitFunction.Id
+ policies := duRRMPolicyRatio.DistributedUnitFunction.RRMPolicyRatio
+ for _, policy := range policies {
+ members:
+ for _, member := range policy.RRMPolicyMembers {
+ metric := a.MetricsPolicies.GetSliceMetric(policyRatioDuId, member.SliceDifferentiator, member.SliceServiceType)
+ if metric != nil {
+ a.MetricsPolicies.AddNewPolicy(addOrUpdatePolicyRatio(metric, policy))
+ break members
+ }
+ }
+ }
+ }
+}
+
+func (a *App) checkIfThresholdIsExceed() []*structures.SliceMetric {
+ exceedsThMetrics := make([]*structures.SliceMetric, 0)
+ for _, metric := range a.MetricsPolicies.Metrics {
+ for key, value := range metric.PM {
+
+ if (value) > THRESHOLD_TPUT {
+ fmt.Printf("PM: [%v, %v] exceeds threshold value!\n", key, value)
+ exceedsThMetrics = append(exceedsThMetrics, metric)
+ }
+ }
+ }
+ return exceedsThMetrics
+}
+
+func (a *App) updateDedicatedRatio(exceedsThMetrics []*structures.SliceMetric) {
+ for _, m := range exceedsThMetrics {
+ //Check if RRMPolicyDedicatedRatio is higher than default value
+ policy := a.MetricsPolicies.Policies[m.RRMPolicyRatioId]
+
+ if policy != nil && policy.PolicyDedicatedRatio <= DEFAULT_DEDICATED_RATIO {
+ //Send PostRequest to update DedicatedRatio
+ url := getUrlUpdatePolicyDedicatedRatio(SDNRUrl, m.DUId, policy.PolicyRatioId)
+ a.Client.Post(url, messages.GetDedicatedRatioUpdateMessage(*m, *policy, NEW_DEDICATED_RATIO), nil)
+ }
+ }
+}
+
+func addOrUpdatePolicyRatio(metric *structures.SliceMetric, policy messages.RRMPolicyRatio) *structures.PolicyRatio {
+ if metric.RRMPolicyRatioId == "" {
+ metric.RRMPolicyRatioId = policy.Id
+ }
+ return &structures.PolicyRatio{
+ PolicyRatioId: policy.Id,
+ PolicyMaxRatio: policy.RRMPolicyMaxRatio,
+ PolicyMinRatio: policy.RRMPolicyMinRatio,
+ PolicyDedicatedRatio: toInt(policy.RRMPolicyDedicatedRatio),
+ }
+}
+
+func toInt(num string) int {
+ res, err := strconv.Atoi(num)
+ if err != nil {
+ return -1
+ }
+ return res
+}
+
+func getUrlForDistributedUnitFunctions(host string, duid string) string {
+ return host + "/rests/data/network-topology:network-topology/topology=topology-netconf/node=" + NODE_ID + "/yang-ext:mount/o-ran-sc-du-hello-world:network-function/distributed-unit-functions=" + duid
+}
+
+func getUrlUpdatePolicyDedicatedRatio(host string, duid string, policyid string) string {
+ return host + "/rests/data/network-topology:network-topology/topology=topology-netconf/node=" + NODE_ID + "/yang-ext:mount/o-ran-sc-du-hello-world:network-function/distributed-unit-functions=" + duid + "/radio-resource-management-policy-ratio=" + policyid
+}