gerrit.onap Code Review - dcaegen2/services.git/blob

   1 /*******************************************************************************
   2  *  ============LICENSE_START=======================================================
   3  *  slice-analysis-ms
   4  *  ================================================================================
   5  *   Copyright (C) 2020 Wipro Limited.
   6  *   ==============================================================================
   7  *     Licensed under the Apache License, Version 2.0 (the "License");
   8  *     you may not use this file except in compliance with the License.
   9  *     You may obtain a copy of the License at
  10  *
  11  *          http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  *     Unless required by applicable law or agreed to in writing, software
  14  *     distributed under the License is distributed on an "AS IS" BASIS,
  15  *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  *     See the License for the specific language governing permissions and
  17  *     limitations under the License.
  18  *     ============LICENSE_END=========================================================
  19  *
  20  *******************************************************************************/
  21 package org.onap.slice.analysis.ms.service;
  22
  23 import java.util.ArrayList;
  24 import java.util.HashMap;
  25 import java.util.Iterator;
  26 import java.util.List;
  27 import java.util.Map;
  28
  29 import javax.annotation.PostConstruct;
  30
  31 import org.onap.slice.analysis.ms.configdb.IConfigDbService;
  32 import org.onap.slice.analysis.ms.models.Configuration;
  33 import org.onap.slice.analysis.ms.models.MeasurementObject;
  34 import org.onap.slice.analysis.ms.models.SubCounter;
  35 import org.onap.slice.analysis.ms.models.policy.AdditionalProperties;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38 import org.springframework.beans.factory.annotation.Autowired;
  39 import org.springframework.context.annotation.Scope;
  40 import org.springframework.stereotype.Component;
  41
  42 /**
  43  * This class process the measurement data of an S-NSSAI
  44  */
  45 @Component
  46 @Scope("prototype")
  47 public class SnssaiSamplesProcessor {
  48         private static Logger log = LoggerFactory.getLogger(SnssaiSamplesProcessor.class);
  49
  50         @Autowired
  51         private PolicyService policyService;
  52
  53         @Autowired
  54         private IConfigDbService configDbService;
  55
  56         @Autowired
  57         private PmDataQueue pmDataQueue;
  58
  59         @Autowired
  60         private AverageCalculator averageCalculator;
  61
  62         private List<MeasurementObject> snssaiMeasurementList = new ArrayList<>();
  63         private Map<String, List<String>> ricToCellMapping = new HashMap<>();
  64         private Map<String, Map<String, Integer>> ricToPrbsMapping = new HashMap<>();
  65         private Map<String, Map<String, Integer>> ricToThroughputMapping = new HashMap<>();
  66         private int noOfSamples;
  67         private List<String> pmsToCompute;
  68         private Map<String, String> prbThroughputMapping = new HashMap<>();
  69         private int minPercentageChange;
  70
  71         @PostConstruct
  72         public void init() {
  73                 Configuration configuration = Configuration.getInstance();
  74                 noOfSamples = configuration.getSamples();
  75                 pmsToCompute = new ArrayList<>();
  76                 pmsToCompute.add("PrbUsedDl");
  77                 pmsToCompute.add("PrbUsedUl");
  78                 prbThroughputMapping = new HashMap<>();
  79                 prbThroughputMapping.put("PrbUsedDl", "dLThptPerSlice");
  80                 prbThroughputMapping.put("PrbUsedUl", "uLThptPerSlice");
  81                 minPercentageChange = configuration.getMinPercentageChange();
  82         }
  83
  84         /**
  85          * process the measurement data of an S-NSSAI
  86          */
  87         public boolean processSamplesOfSnnsai(String snssai, List<String> networkFunctions) {
  88                 List<MeasurementObject> sample = null;
  89                 List<List<MeasurementObject>> samples = null;
  90                 log.info("Network Functions {} of snssai {}", networkFunctions, snssai);
  91                 for(String nf : networkFunctions) {
  92                         log.debug("Average of samples for {}:", snssai);
  93                         samples = pmDataQueue.getSamplesFromQueue(new SubCounter(nf, snssai), noOfSamples);
  94                         if(samples != null) {
  95                                 sample = averageCalculator.findAverageOfSamples(samples);
  96                                 addToMeasurementList(sample);
  97                         }
  98                         else {
  99                                 log.info("Not enough samples present for nf {}", nf);
 100                                 return false;
 101                         }
 102                 }
 103                 log.info("snssai measurement list {}", snssaiMeasurementList);
 104                 ricToCellMapping = configDbService.fetchRICsOfSnssai(snssai);
 105                 log.info("RIC to Cell Mapping for {} S-NSSAI: {}", snssai, ricToCellMapping);
 106                 Map<String, Map<String, Object>> ricConfiguration = configDbService.fetchCurrentConfigurationOfRIC(snssai);
 107                 Map<String, Integer> sliceConfiguration = configDbService.fetchCurrentConfigurationOfSlice(snssai);
 108                 log.info("RIC Configuration {} and Slice Configuration {}", ricConfiguration, sliceConfiguration);
 109                 pmsToCompute.forEach(pm -> {
 110                         log.debug("processing for pm {}", pm);
 111                         sumOfPrbsAcrossCells(pm);
 112                         int sum = computeSum(pm);
 113                         computeThroughput(sliceConfiguration, sum, pm);
 114                         calculatePercentageChange(ricConfiguration, prbThroughputMapping.get(pm));
 115                 });
 116                 updateConfiguration();
 117                 if(ricToThroughputMapping.size() > 0) {
 118                         AdditionalProperties<Map<String, Map<String, Integer>>> addProps = new AdditionalProperties<>();
 119                         addProps.setResourceConfig(ricToThroughputMapping);
 120                         policyService.sendOnsetMessageToPolicy(snssai, addProps, configDbService.fetchServiceDetails(snssai));
 121                 }
 122                 return true;
 123         }
 124
 125         /**
 126          * process the measurement data of an S-NSSAI
 127          */
 128         protected void updateConfiguration() {
 129                 Iterator<Map.Entry<String, Map<String,Integer>>> it = ricToThroughputMapping.entrySet().iterator();
 130                 Map.Entry<String, Map<String,Integer>> entry = null;
 131                 while(it.hasNext()) {
 132                         entry = it.next();
 133                         if(entry.getValue().size() == 0) {
 134                                 it.remove();
 135                         }
 136                 }
 137         }
 138
 139         private void addToMeasurementList(List<MeasurementObject> sample) {
 140                 snssaiMeasurementList.addAll(sample);
 141         }
 142
 143         /**
 144          * Calculate the change in the configuration value and keep the configuration only if it is greater than a
 145          * specific limit
 146          */
 147         protected void calculatePercentageChange(Map<String, Map<String, Object>> ricConfiguration, String pm) {
 148                 Iterator<Map.Entry<String, Map<String,Integer>>> it = ricToThroughputMapping.entrySet().iterator();
 149                 Map.Entry<String, Map<String,Integer>> entry = null;
 150                 float existing = 0;
 151                 float change = 0;
 152                 while(it.hasNext()) {
 153                         entry = it.next();
 154                         existing = (float)((int)ricConfiguration.get(entry.getKey()).get(pm));
 155                         change = ((Math.abs(entry.getValue().get(pm) - existing))/existing)*100;
 156                         if (change <= minPercentageChange) {
 157                                 ricToThroughputMapping.get(entry.getKey()).remove(pm);
 158                                 log.info("Removing pm data {} for RIC {}", pm, entry.getKey());
 159                         }
 160                 }
 161         }
 162
 163         protected void sumOfPrbsAcrossCells(String pmName) {
 164                 ricToCellMapping.forEach((ric,cells) -> {
 165                         int sumOfPrbs = 0;
 166                         for(String cell : cells) {
 167                                 int index = MeasurementObject.findIndex(cell, snssaiMeasurementList);
 168                                 sumOfPrbs += snssaiMeasurementList.get(index).getPmData().get(pmName);
 169                         }
 170                         if(ricToPrbsMapping.containsKey(ric)) {
 171                                 ricToPrbsMapping.get(ric).put(pmName, sumOfPrbs);
 172                         }
 173                         else {
 174                                 Map<String, Integer> pmToPrbMapping  = new HashMap<>();
 175                                 pmToPrbMapping.put(pmName, sumOfPrbs);
 176                                 ricToPrbsMapping.put(ric, pmToPrbMapping);
 177                         }
 178                 });
 179                 log.info("PRBs sum computed for RIC {}", ricToPrbsMapping);
 180         }
 181
 182         protected Integer computeSum(String pm) {
 183                 return ricToPrbsMapping.entrySet().stream().map(x -> x.getValue().get(pm)).reduce(0, Integer::sum);
 184         }
 185
 186         protected void computeThroughput(Map<String, Integer> sliceConfiguration, int sum, String pm) {
 187                 Iterator<Map.Entry<String, Map<String,Integer>>> it = ricToPrbsMapping.entrySet().iterator();
 188                 Map.Entry<String, Map<String,Integer>> entry = null;
 189                 Map<String, Integer> throughtputMap = null;
 190                 String ric = "";
 191                 int value = 0;
 192                 while(it.hasNext()) {
 193                         entry = it.next();
 194                         ric = entry.getKey();
 195                         value = Math.round(((float)entry.getValue().get(pm)/sum)*(float)sliceConfiguration.get(prbThroughputMapping.get(pm)));
 196                         if(ricToThroughputMapping.containsKey(ric)) {
 197                                 ricToThroughputMapping.get(ric).put(prbThroughputMapping.get(pm), value);
 198                         }
 199                         else {
 200                                 throughtputMap = new HashMap<>();
 201                                 throughtputMap.put(prbThroughputMapping.get(pm), value);
 202                                 ricToThroughputMapping.put(ric, throughtputMap);
 203                         }
 204                 }
 205                 log.info("Throughput computed for RIC {}", ricToThroughputMapping);
 206         }
 207 }