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.onap.slice.analysis.ms.utils.BeanUtil;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  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         private PolicyService policyService;
  51         private IConfigDbService configDbService;
  52         private PmDataQueue pmDataQueue;
  53         private AverageCalculator averageCalculator;
  54         private List<MeasurementObject> snssaiMeasurementList = new ArrayList<>();
  55         private Map<String, List<String>> ricToCellMapping = new HashMap<>();
  56         private Map<String, Map<String, Integer>> ricToPrbsMapping = new HashMap<>();
  57         private Map<String, Map<String, Integer>> ricToThroughputMapping = new HashMap<>();
  58         private int samples;
  59         private List<String> pmsToCompute;
  60         private Map<String, String> prbThroughputMapping = new HashMap<>();
  61         private int minPercentageChange;
  62
  63         @PostConstruct
  64         public void init() {
  65                 Configuration configuration = Configuration.getInstance();
  66                 samples = configuration.getSamples();
  67                 pmsToCompute = new ArrayList<>();
  68                 pmsToCompute.add("PrbUsedDl");
  69                 pmsToCompute.add("PrbUsedUl");
  70                 prbThroughputMapping = new HashMap<>();
  71                 prbThroughputMapping.put("PrbUsedDl", "dLThptPerSlice");
  72                 prbThroughputMapping.put("PrbUsedUl", "uLThptPerSlice");
  73                 minPercentageChange = configuration.getMinPercentageChange();
  74                 policyService = BeanUtil.getBean(PolicyService.class);
  75                 configDbService = BeanUtil.getBean(IConfigDbService.class);
  76                 pmDataQueue = BeanUtil.getBean(PmDataQueue.class);
  77                 averageCalculator = BeanUtil.getBean(AverageCalculator.class);
  78         }
  79
  80         /**
  81          * process the measurement data of an S-NSSAI
  82          */
  83         public void processSamplesOfSnnsai(String snssai, List<String> networkFunctions) {
  84                 networkFunctions.forEach(nf -> {
  85                         log.debug("Average of samples for {}:", snssai);
  86                         addToMeasurementList(averageCalculator.findAverageOfSamples(pmDataQueue.getSamplesFromQueue(new SubCounter(nf, snssai), samples)));
  87                 });
  88                 ricToCellMapping = configDbService.fetchRICsOfSnssai(snssai);
  89                 log.debug("RIC to Cell Mapping for {} S-NSSAI: {}", snssai, ricToCellMapping);
  90                 Map<String, Map<String, Integer>> ricConfiguration = configDbService.fetchCurrentConfigurationOfRIC(snssai);
  91                 Map<String, Integer> sliceConfiguration = configDbService.fetchCurrentConfigurationOfSlice(snssai);
  92                 log.debug("RIC Configuration: {}", ricConfiguration);
  93                 log.debug("Slice Configuration: {}", sliceConfiguration);
  94                 pmsToCompute.forEach(pm -> {
  95                         sumOfPrbsAcrossCells(pm);
  96                         int sum = computeSum(pm);
  97                         computeThroughput(sliceConfiguration, sum, pm);
  98                         calculatePercentageChange(ricConfiguration, pm);
  99                 });
 100                 updateConfiguration();
 101                 if(ricToThroughputMapping.size() > 0) {
 102                         AdditionalProperties<Map<String, Map<String, Integer>>> addProps = new AdditionalProperties<>();
 103                         addProps.setResourceConfig(ricToThroughputMapping);
 104                         policyService.sendOnsetMessageToPolicy(snssai, addProps, configDbService.fetchServiceDetails(snssai));
 105                 }
 106
 107         }
 108
 109         /**
 110          * process the measurement data of an S-NSSAI
 111          */
 112         protected void updateConfiguration() {
 113                 Iterator<Map.Entry<String, Map<String,Integer>>> it = ricToThroughputMapping.entrySet().iterator();
 114                 Map.Entry<String, Map<String,Integer>> entry = null;
 115                 while(it.hasNext()) {
 116                         entry = it.next();
 117                         if(entry.getValue().size() == 0) {
 118                                 it.remove();
 119                         }
 120                 }
 121         }
 122
 123         private void addToMeasurementList(List<MeasurementObject> sample) {
 124                 snssaiMeasurementList.addAll(sample);
 125         }
 126
 127         /**
 128          * Calculate the change in the configuration value and keep the configuration only if it is greater than a
 129          * specific limit
 130          */
 131         protected void calculatePercentageChange(Map<String, Map<String, Integer>> ricConfiguration, String pm) {
 132                 Iterator<Map.Entry<String, Map<String,Integer>>> it = ricToThroughputMapping.entrySet().iterator();
 133                 Map.Entry<String, Map<String,Integer>> entry = null;
 134                 float existing = 0;
 135                 float change = 0;
 136                 while(it.hasNext()) {
 137                         entry = it.next();
 138                         existing = ricConfiguration.get(entry.getKey()).get(pm);
 139                         change = ((Math.abs(entry.getValue().get(pm) - existing))/existing)*100;
 140                         if (change <= minPercentageChange) {
 141                                 ricToThroughputMapping.get(entry.getKey()).remove(pm);
 142                         }
 143                 }
 144         }
 145
 146         protected void sumOfPrbsAcrossCells(String pmName) {
 147                 ricToCellMapping.forEach((ric,cells) -> {
 148                         int sumOfPrbs = 0;
 149                         for(String cell : cells) {
 150                                 int index = snssaiMeasurementList.indexOf(new MeasurementObject(cell));
 151                                 sumOfPrbs += snssaiMeasurementList.get(index).getPmData().get(pmName);
 152                         }
 153                         if(ricToPrbsMapping.containsKey(ric)) {
 154                                 ricToPrbsMapping.get(ric).put(pmName, sumOfPrbs);
 155                         }
 156                         else {
 157                                 Map<String, Integer> pmToPrbMapping  = new HashMap<>();
 158                                 pmToPrbMapping.put(pmName, sumOfPrbs);
 159                                 ricToPrbsMapping.put(ric, pmToPrbMapping);
 160                         }
 161                 });
 162         }
 163
 164         protected Integer computeSum(String pm) {
 165                 return ricToPrbsMapping.entrySet().stream().map(x -> x.getValue().get(pm)).reduce(0, Integer::sum);
 166         }
 167
 168         protected void computeThroughput(Map<String, Integer> sliceConfiguration, int sum, String pm) {
 169                 Iterator<Map.Entry<String, Map<String,Integer>>> it = ricToPrbsMapping.entrySet().iterator();
 170                 Map.Entry<String, Map<String,Integer>> entry = null;
 171                 Map<String, Integer> throughtputMap = null;
 172                 String ric = "";
 173                 int value = 0;
 174                 while(it.hasNext()) {
 175                         entry = it.next();
 176                         ric = entry.getKey();
 177                         value = Math.round(((float)entry.getValue().get(pm)/sum)*(float)sliceConfiguration.get(prbThroughputMapping.get(pm)));
 178                         if(ricToThroughputMapping.containsKey(ric)) {
 179                                 ricToThroughputMapping.get(ric).put(prbThroughputMapping.get(pm), value);
 180                         }
 181                         else {
 182                                 throughtputMap = new HashMap<>();
 183                                 throughtputMap.put(prbThroughputMapping.get(pm), value);
 184                                 ricToThroughputMapping.put(ric, throughtputMap);
 185                         }
 186                 }
 187
 188         }
 189
 190 }