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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.Collections;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import java.util.concurrent.LinkedBlockingQueue;
import org.onap.slice.analysis.ms.models.MeasurementObject;
import org.onap.slice.analysis.ms.models.SubCounter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
/**
* This class represents the data structure for storing the pm events
*/
@Component
public class PmDataQueue {
private static Logger log = LoggerFactory.getLogger(PmDataQueue.class);
private Map<SubCounter, Queue<List<MeasurementObject>>> subCounterMap = Collections.synchronizedMap(new LinkedHashMap<SubCounter, Queue<List<MeasurementObject>>>());
private Queue<String> snssaiList = new LinkedBlockingQueue<>();
/**
* put the measurement data for (an S-NSSAI from a network function) in the queue
*/
public void putDataToQueue(SubCounter subCounter, List<MeasurementObject> measurementObjectData) {
Queue<List<MeasurementObject>> measQueue;
if (subCounterMap.containsKey(subCounter)){
subCounterMap.get(subCounter).add(measurementObjectData);
}
else {
measQueue = new LinkedBlockingQueue<>();
measQueue.add(measurementObjectData);
subCounterMap.put(subCounter, measQueue);
}
log.debug("Queue: {}", subCounterMap);
}
/**
* get the measurement data for (an S-NSSAI from a network function) from the queue
* returns the specified number of samples
*/
public List<List<MeasurementObject>> getSamplesFromQueue(SubCounter subCounter, int samples) {
List<List<MeasurementObject>> sampleList = null;
if (subCounterMap.containsKey(subCounter)){
Queue<List<MeasurementObject>> measQueue = subCounterMap.get(subCounter);
if(measQueue.size() >= samples) {
sampleList = new LinkedList<>();
while(samples > 0) {
sampleList.add(measQueue.remove());
samples --;
}
}
}
return sampleList;
}
/**
* put S-NSSAI to the queue
*/
public void putSnssaiToQueue(String snssai) {
if (!snssaiList.contains(snssai))
snssaiList.add(snssai);
}
/**
* get S-NSSAI from the queue
*/
public String getSnnsaiFromQueue() {
String snssai = "";
try {
if(!snssaiList.isEmpty()){
snssai = snssaiList.remove();
}
}
catch(Exception e) {
log.error("Problem fetching from the Queue, {}", e.getMessage());
}
return snssai;
}
}
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