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/*******************************************************************************
* ============LICENSE_START=======================================================
* slice-analysis-ms
* ================================================================================
* Copyright (C) 2020 Wipro Limited.
* ==============================================================================
* 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 org.onap.slice.analysis.ms.service;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.PostConstruct;
import org.onap.slice.analysis.ms.models.MeasurementObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
/**
* This class has utility methods for calculating the average of samples
*/
@Component
public class AverageCalculator {
private static Logger log = LoggerFactory.getLogger(AverageCalculator.class);
private List<String> pmNames;
@PostConstruct
public void init() {
pmNames = new ArrayList<>();
pmNames.add("PrbUsedDl");
pmNames.add("PrbUsedUl");
}
/**
* Find average of samples
*/
public List<MeasurementObject> findAverageOfSamples(List<List<MeasurementObject>> samples) {
int numOfSamples = samples.size();
List<MeasurementObject> result = new ArrayList<>();
samples.forEach(sample ->
sample.forEach(cellMeasObj -> {
int index = result.indexOf(cellMeasObj);
if(index != -1) {
result.set(index, findSum(result.get(index), cellMeasObj));
}
else {
result.add(cellMeasObj);
}
})
);
return findAvg(result, numOfSamples);
}
/**
* Calculate the sum
*/
public MeasurementObject findSum(MeasurementObject existing, MeasurementObject current) {
pmNames.forEach(pmName -> {
int newValue = current.getPmData().get(pmName) + existing.getPmData().get(pmName);
existing.getPmData().put(pmName, newValue);
});
return existing;
}
/**
* Calculate the average
*/
public List<MeasurementObject> findAvg(List<MeasurementObject> result, int numOfSamples) {
result.forEach(cellMeasObj ->
pmNames.forEach(pmName -> {
int value = (cellMeasObj.getPmData().get(pmName))/numOfSamples;
cellMeasObj.getPmData().put(pmName, value);
})
);
log.debug("Average of measurement data samples {}",result);
return result;
}
}
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