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
  22 package org.onap.slice.analysis.ms.service;
  23
  24 import java.util.ArrayList;
  25 import java.util.List;
  26
  27 import javax.annotation.PostConstruct;
  28
  29 import org.onap.slice.analysis.ms.models.MeasurementObject;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32 import org.springframework.stereotype.Component;
  33
  34 /**
  35  * This class has utility methods for calculating the average of samples
  36  */
  37 @Component
  38 public class AverageCalculator {
  39         private static Logger log = LoggerFactory.getLogger(AverageCalculator.class);
  40         private List<String> pmNames;
  41
  42         @PostConstruct
  43         public void init() {
  44                 pmNames = new ArrayList<>();
  45                 pmNames.add("PrbUsedDl");
  46                 pmNames.add("PrbUsedUl");
  47         }
  48
  49         /**
  50          * Find average of samples
  51          */
  52         public List<MeasurementObject> findAverageOfSamples(List<List<MeasurementObject>> samples) {
  53                 log.debug("find average for samples {}", samples);
  54                 int numOfSamples = samples.size();
  55                 List<MeasurementObject> result = new ArrayList<>();
  56                 if(!samples.isEmpty()) {
  57                         for(List<MeasurementObject> sample : samples) {
  58                                 for(MeasurementObject cellMeasObj : sample) {
  59                                         int index = MeasurementObject.findIndex(cellMeasObj.getMeasurementObjectId(), result);
  60                                         if(index != -1) {
  61                                                 result.set(index, findSum(result.get(index), cellMeasObj));
  62                                         }
  63                                         else {
  64                                                 result.add(cellMeasObj);
  65                                         }
  66                                 }
  67                         }
  68                 }
  69                 return findAvg(result, numOfSamples);
  70         }
  71
  72         /**
  73          * Calculate the sum
  74          */
  75         public MeasurementObject findSum(MeasurementObject existing, MeasurementObject current) {
  76                 pmNames.forEach(pmName -> {
  77                         int newValue = current.getPmData().get(pmName) + existing.getPmData().get(pmName);
  78                         existing.getPmData().put(pmName, newValue);
  79                 });
  80                 return existing;
  81         }
  82
  83         /**
  84          * Calculate the average
  85          */
  86         public List<MeasurementObject> findAvg(List<MeasurementObject> result, int numOfSamples) {
  87                 if(!result.isEmpty()) {
  88                         result.forEach(cellMeasObj ->
  89                         pmNames.forEach(pmName -> {
  90                                 int value = (cellMeasObj.getPmData().get(pmName))/numOfSamples;
  91                                 cellMeasObj.getPmData().put(pmName, value);
  92                         })
  93                         );
  94                         log.debug("Average of measurement data samples {}",result);
  95                 }
  96                 return result;
  97         }
  98 }
  99