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/*******************************************************************************
* ============LICENSE_START=======================================================
* pcims
* ================================================================================
* Copyright (C) 2018 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 com.wipro.www.sonhms;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.wipro.www.sonhms.child.ChildThread;
import com.wipro.www.sonhms.child.Graph;
import com.wipro.www.sonhms.dao.CellInfoRepository;
import com.wipro.www.sonhms.dao.ClusterDetailsRepository;
import com.wipro.www.sonhms.entity.CellInfo;
import com.wipro.www.sonhms.entity.ClusterDetails;
import com.wipro.www.sonhms.exceptions.ConfigDbNotFoundException;
import com.wipro.www.sonhms.model.CellPciPair;
import com.wipro.www.sonhms.model.FapServiceList;
import com.wipro.www.sonhms.model.LteNeighborListInUseLteCell;
import com.wipro.www.sonhms.model.Notification;
import com.wipro.www.sonhms.model.ThreadId;
import com.wipro.www.sonhms.restclient.SdnrRestClient;
import com.wipro.www.sonhms.utils.BeanUtil;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import org.slf4j.Logger;
public class SdnrNotificationHandlingState implements SonState {
private static Map<Long, ChildThread> childThreadMap = new HashMap<>();
private static final Logger log = org.slf4j.LoggerFactory.getLogger(SdnrNotificationHandlingState.class);
@Override
public void stateChange(SonContext sonContext) {
// logic to determine if notif to be processed
log.debug("inside statechange of sdnr notif state");
String notification = sonContext.getSdnrNotification();
Notification notificationObject;
try {
ObjectMapper mapper = new ObjectMapper();
notificationObject = mapper.readValue(notification, Notification.class);
log.debug("notificationObject{}", notificationObject);
List<FapServiceList> serviceList = notificationObject.getPayload().getRadioAccess().getFapServiceList();
for (FapServiceList fapService : serviceList) {
String cellId = fapService.getCellConfig().getLte().getRan().getCellIdentity();
log.debug("cellId:{}", cellId);
log.debug("inside for loop");
List<ClusterDetails> clusterDetails = getAllClusters();
ClusterDetails clusterDetail = getClusterForNotification(fapService, clusterDetails);
if (clusterDetail == null) {
// form the cluster
Graph cluster = createCluster(fapService);
// save to db
UUID clusterId = UUID.randomUUID();
cluster.setGraphId(clusterId);
// create the child thread
log.debug("creating new child");
BlockingQueue<FapServiceList> queue = new LinkedBlockingQueue<>();
ThreadId threadId = new ThreadId();
threadId.setChildThreadId(0);
ChildThread child = new ChildThread(sonContext.getChildStatusUpdate(), cluster, queue, threadId);
queue.put(fapService);
MainThreadComponent mainThreadComponent = BeanUtil.getBean(MainThreadComponent.class);
mainThreadComponent.getPool().execute(child);
waitForThreadId(threadId);
saveCluster(cluster, clusterId, threadId.getChildThreadId());
addChildThreadMap(threadId.getChildThreadId(), child);
sonContext.addChildStatus(threadId.getChildThreadId(), "processingNotifications");
}
else {
if (isOofTriggeredForCluster(sonContext, clusterDetail)) {
sonContext.setNotifToBeProcessed(false);
bufferNotification(fapService, clusterDetail.getClusterId());
} else {
sonContext.setNotifToBeProcessed(true);
log.debug("childThreadId:{}", clusterDetail.getChildThreadId());
childThreadMap.get(clusterDetail.getChildThreadId()).putInQueue(fapService);
}
}
}
} catch (Exception e) {
log.error("caught in sdnr notif handling state{}", e);
}
WaitState waitState = WaitState.getInstance();
sonContext.setPciState(waitState);
sonContext.stateChange(sonContext);
}
private void waitForThreadId(ThreadId threadId) {
try {
synchronized (threadId) {
while (threadId.getChildThreadId() == 0) {
threadId.wait();
}
}
} catch (InterruptedException e) {
log.error("ChildThread queue error {}", e);
Thread.currentThread().interrupt();
}
}
private String saveCluster(Graph cluster, UUID clusterId, Long threadId) {
String cellPciNeighbourString = cluster.getPciNeighbourJson();
log.debug("cluster hahsmap to string : {}", cellPciNeighbourString);
cluster.setGraphId(clusterId);
ClusterDetails details = new ClusterDetails();
details.setClusterId(clusterId.toString());
details.setClusterInfo(cellPciNeighbourString);
details.setChildThreadId(threadId);
ClusterDetailsRepository clusterDetailsRepository = BeanUtil.getBean(ClusterDetailsRepository.class);
clusterDetailsRepository.save(details);
return clusterId.toString();
}
private Graph createCluster(FapServiceList fapService) throws ConfigDbNotFoundException {
Graph cluster = new Graph();
log.debug("cluster formation started");
int phycellId = fapService.getX0005b9Lte().getPhyCellIdInUse();
String cellId = fapService.getCellConfig().getLte().getRan().getCellIdentity();
CellInfoRepository cellInfoRepository = BeanUtil.getBean(CellInfoRepository.class);
cellInfoRepository.save(new CellInfo(cellId, fapService.getX0005b9Lte().getPnfName()));
CellPciPair val = new CellPciPair();
val.setCellId(cellId);
val.setPhysicalCellId(phycellId);
List<LteNeighborListInUseLteCell> neighbourlist;
neighbourlist = fapService.getCellConfig().getLte().getRan().getNeighborListInUse()
.getLteNeighborListInUseLteCell();
log.debug("Neighbor list size: {}", neighbourlist.size());
for (int i = 0; i < neighbourlist.size(); i++) {
String cell = neighbourlist.get(i).getAlias();
int phy = neighbourlist.get(i).getPhyCellId();
cellInfoRepository.save(new CellInfo(cell, neighbourlist.get(i).getPnfName()));
log.debug("cellID: {}", cell);
log.debug("PCI: {}", phy);
CellPciPair val1 = new CellPciPair();
val1.setCellId(cell);
val1.setPhysicalCellId(phy);
cluster.addEdge(val, val1);
log.debug("cluster: {}", cluster);
List<CellPciPair> nbrList = SdnrRestClient.getNbrList(neighbourlist.get(i).getAlias());
for (CellPciPair nbr : nbrList) {
String cid = nbr.getCellId();
int pci = nbr.getPhysicalCellId();
CellPciPair val3 = new CellPciPair();
val3.setCellId(cid);
val3.setPhysicalCellId(pci);
cluster.addEdge(val1, val3);
}
}
log.debug("final cluster: {}", cluster);
return cluster;
}
private void bufferNotification(FapServiceList fapService, String clusterId) {
ObjectMapper mapper = new ObjectMapper();
BufferNotificationComponent bufferNotifComponent = new BufferNotificationComponent();
String serviceListString = "";
try {
serviceListString = mapper.writeValueAsString(fapService);
} catch (JsonProcessingException e) {
log.debug("JSON processing exception: {}", e);
}
bufferNotifComponent.bufferNotification(serviceListString, clusterId);
}
private boolean isOofTriggeredForCluster(SonContext pciContext, ClusterDetails clusterDetail) {
Long childThreadId = clusterDetail.getChildThreadId();
String childStatus = pciContext.getChildStatus(childThreadId);
return childStatus.equals("triggeredOof");
}
private ClusterDetails getClusterForNotification(FapServiceList fapService, List<ClusterDetails> clusterDetails) {
String cellId = fapService.getCellConfig().getLte().getRan().getCellIdentity();
Map<CellPciPair, ArrayList<CellPciPair>> cellPciNeighbourMap;
for (ClusterDetails clusterDetail : clusterDetails) {
Graph cluster = new Graph(clusterDetail.getClusterInfo());
cellPciNeighbourMap = cluster.getCellPciNeighbourMap();
Set<CellPciPair> keys = cellPciNeighbourMap.keySet();
Iterator<CellPciPair> traverse = keys.iterator();
while (traverse.hasNext()) {
CellPciPair key = traverse.next();
String currentCellId = key.getCellId();
if (cellId.equals(currentCellId)) {
return clusterDetail;
}
}
}
return null;
}
private List<ClusterDetails> getAllClusters() {
ClusterDetailsComponent clusterDetailsComponent = new ClusterDetailsComponent();
return clusterDetailsComponent.getClusterDetails();
}
public static void addChildThreadMap(Long childThreadId, ChildThread child) {
childThreadMap.put(childThreadId, child);
}
public static Map<Long, ChildThread> getChildThreadMap() {
return childThreadMap;
}
}
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