Merge "First version of ODU slice assurance usecase"

[nonrtric.git] / test / usecases / odusliceassurance / goversion / internal / sliceassurance / app.go

diff --git a/test/usecases/odusliceassurance/goversion/internal/sliceassurance/app.go b/test/usecases/odusliceassurance/goversion/internal/sliceassurance/app.go
new file mode 100644 (file)
index 0000000..09a9448
--- /dev/null
+++ b/test/usecases/odusliceassurance/goversion/internal/sliceassurance/app.go
@@ -0,0 +1,157 @@
+// -
+//   ========================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
+}