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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 org.onap.dcaegen2.services.sonhms;
import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.ArrayList;
import java.util.List;
import org.onap.dcaegen2.services.sonhms.dao.HandOverMetricsRepository;
import org.onap.dcaegen2.services.sonhms.dmaap.PolicyDmaapClient;
import org.onap.dcaegen2.services.sonhms.entity.HandOverMetrics;
import org.onap.dcaegen2.services.sonhms.model.AdditionalMeasurements;
import org.onap.dcaegen2.services.sonhms.model.CellConfig;
import org.onap.dcaegen2.services.sonhms.model.Common;
import org.onap.dcaegen2.services.sonhms.model.Configurations;
import org.onap.dcaegen2.services.sonhms.model.Data;
import org.onap.dcaegen2.services.sonhms.model.FapService;
import org.onap.dcaegen2.services.sonhms.model.HoDetails;
import org.onap.dcaegen2.services.sonhms.model.Lte;
import org.onap.dcaegen2.services.sonhms.model.LteCell;
import org.onap.dcaegen2.services.sonhms.model.NeighborListInUse;
import org.onap.dcaegen2.services.sonhms.model.PMNotification;
import org.onap.dcaegen2.services.sonhms.model.Payload;
import org.onap.dcaegen2.services.sonhms.model.Ran;
import org.onap.dcaegen2.services.sonhms.utils.BeanUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PMNotificationHandler {
private static Logger log = LoggerFactory.getLogger(DmaapNotificationsComponent.class);
PolicyDmaapClient policyDmaapClient;
public PMNotificationHandler() {
}
public PMNotificationHandler(PolicyDmaapClient policyDmaapClient) {
this.policyDmaapClient = policyDmaapClient;
}
/**
* handle pm notifications.
*/
public Boolean handlePmNotifications(PMNotification pmNotification, int badThreshold) {
HandOverMetricsRepository handOverMetricsRepository = BeanUtil.getBean(HandOverMetricsRepository.class);
Boolean result;
try {
List<HoDetails> hoDetailsList = new ArrayList<>();
List<LteCell> lteCellList = new ArrayList<>();
String srcCellId = pmNotification.getEvent().getCommonEventHeader().getSourceName();
for (AdditionalMeasurements additionalMeasurements : pmNotification.getEvent().getMeasurement()
.getAdditionalMeasurements()) {
int attemptsCount = Integer
.parseInt(additionalMeasurements.getArrayOfNamedHashMap().get(1).get("InterEnbOutAtt_X2HO"));
int successCount = Integer
.parseInt(additionalMeasurements.getArrayOfNamedHashMap().get(2).get("InterEnbOutSucc_X2HO"));
float successRate = ((float) successCount / attemptsCount) * 100;
if (successRate >= badThreshold) {
HoDetails hoDetails = new HoDetails();
hoDetails.setDstCellId(additionalMeasurements.getName());
hoDetails.setAttemptsCount(attemptsCount);
hoDetails.setSuccessCount(successCount);
hoDetails.setSuccessRate(successRate);
hoDetailsList.add(hoDetails);
log.info("not bad neighbor {}",additionalMeasurements.getName());
} else {
log.info(" bad neighbor {}",additionalMeasurements.getName());
LteCell lteCell = new LteCell();
lteCell.setBlacklisted("true");
lteCell.setCid(additionalMeasurements.getName());
lteCell.setPlmnId(additionalMeasurements.getArrayOfNamedHashMap().get(0).get("networkId"));
lteCell.setPnfName(pmNotification.getEvent().getCommonEventHeader().getReportingEntityName());
lteCellList.add(lteCell);
}
}
if (!lteCellList.isEmpty()) {
log.info("triggering policy to remove bad neighbors");
result = sendAnrUpdateToPolicy(pmNotification, lteCellList);
log.info("Sent ANR update to policy {}", result);
String hoDetailsString = handOverMetricsRepository.getHandOverMetrics(srcCellId);
if (hoDetailsString != null) {
ObjectMapper mapper = new ObjectMapper();
String newHoDetailsString = null;
try {
newHoDetailsString = mapper.writeValueAsString(hoDetailsList);
} catch (Exception e) {
log.error("Error in writing handover metrics json ", e);
return false;
}
handOverMetricsRepository.updateHoMetrics(newHoDetailsString, srcCellId);
}
}
if (!hoDetailsList.isEmpty()) {
result = saveToHandOverMetrics(hoDetailsList, srcCellId);
log.debug("save HO metrics result {} ", result);
}
} catch (Exception e) {
log.error("Error in handlePmNotifications ", e);
return false;
}
return true;
}
private Boolean sendAnrUpdateToPolicy(PMNotification pmNotification, List<LteCell> lteCellList) {
ObjectMapper mapper = new ObjectMapper();
try {
mapper.setSerializationInclusion(Include.NON_NULL);
ArrayList<Configurations> configurations = new ArrayList<>();
String cellId = pmNotification.getEvent().getCommonEventHeader().getSourceName();
Configurations configuration = new Configurations(
new Data(new FapService(cellId, null, new CellConfig(new Lte(new Ran(new Common(cellId),
new NeighborListInUse(null, lteCellList, String.valueOf(lteCellList.size()))))))));
configurations.add(configuration);
Payload payload = new Payload(configurations);
log.info("payload : {}", payload);
String anrUpdateString = mapper.writeValueAsString(payload);
Boolean result = policyDmaapClient.sendNotificationToPolicy(anrUpdateString);
log.debug("send notification to policy result {} ", result);
} catch (Exception e) {
log.error("Exception in sending Anr update to policy ", e);
return false;
}
return true;
}
private Boolean saveToHandOverMetrics(List<HoDetails> hoDetailsList, String srcCellId) {
HandOverMetricsRepository handOverMetricsRepository = BeanUtil.getBean(HandOverMetricsRepository.class);
ObjectMapper mapper = new ObjectMapper();
String hoDetailsString = null;
try {
hoDetailsString = mapper.writeValueAsString(hoDetailsList);
} catch (Exception e) {
log.error("Error in writing handover metrics json ", e);
return false;
}
if (handOverMetricsRepository.getHandOverMetrics(srcCellId) == null) {
HandOverMetrics handOverMetrics = new HandOverMetrics();
handOverMetrics.setHoDetails(hoDetailsString);
handOverMetrics.setSrcCellId(srcCellId);
handOverMetricsRepository.save(handOverMetrics);
}
else {
handOverMetricsRepository.updateHoMetrics(hoDetailsString, srcCellId);
}
return true;
}
}
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