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/*-
* ============LICENSE_START=======================================================
* Ran Simulator Controller
* ================================================================================
* Copyright (C) 2021 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.ransim.rest.api.services;
import com.google.gson.Gson;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
import javax.websocket.Session;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamWriter;
import org.apache.log4j.Logger;
import org.onap.ransim.rest.api.exceptions.RansimException;
import org.onap.ransim.rest.api.models.NSSAIConfig;
import org.onap.ransim.rest.web.mapper.GNBDUModel;
import org.onap.ransim.rest.web.mapper.NRCellDUModel;
import org.onap.ransim.rest.web.mapper.NSSAIData;
import org.onap.ransim.rest.web.mapper.PLMNInfoModel;
import org.onap.ransim.rest.xml.models.FileFooter;
import org.onap.ransim.rest.xml.models.FileHeader;
import org.onap.ransim.rest.xml.models.FileSender;
import org.onap.ransim.rest.xml.models.GranularityPeriod;
import org.onap.ransim.rest.xml.models.Job;
import org.onap.ransim.rest.xml.models.ManagedElement;
import org.onap.ransim.rest.xml.models.MeasCollec;
import org.onap.ransim.rest.xml.models.MeasCollecEnd;
import org.onap.ransim.rest.xml.models.MeasCollecFile;
import org.onap.ransim.rest.xml.models.MeasData;
import org.onap.ransim.rest.xml.models.MeasInfo;
import org.onap.ransim.rest.xml.models.MeasType;
import org.onap.ransim.rest.xml.models.MeasValue;
import org.onap.ransim.rest.xml.models.ReportingPeriod;
import org.onap.ransim.rest.xml.models.Result;
import org.onap.ransim.websocket.model.SlicingPmMessage;
import org.onap.ransim.websocket.server.RansimWebSocketServer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;
@Service
public class SlicingPMDataGenerator {
static Logger logger = Logger.getLogger(SlicingPMDataGenerator.class.getName());
@Autowired
RANSliceConfigService ranSliceConfigService;
double ricId11MaxVariation = 0.8;
double ricId22MaxVariation = 0.2;
/**
* Generates closed loop PM data for all DU functions Generates PRBs for DUs in
* the ratio of 80:20 for the same nssai in different RICs
*
* @throws RansimException
*/
public void generateClosedLoopPmData(long startTime) {
try {
String requestUrl = "http://" + "localhost" + ":" + "8081" + "/ransim/api/ransim-db/v4/du-list";
List<GNBDUModel> duList = sendGetRequestToransimDb(requestUrl).getBody();
for (GNBDUModel du : duList) {
logger.info("Generating PM data for DU : " + du.getgNBDUName() + " Id :" + du.getgNBDUId());
Map<String, NSSAIConfig> activeNssaiDetails = new HashMap<String, NSSAIConfig>();
List<NRCellDUModel> duCellList = du.getCellDUList();
int ricId = du.getNearRTRICId();
List<PLMNInfoModel> plmnInfoList = new ArrayList<>();
duCellList.stream().filter(cell -> (!Objects.isNull(cell.getpLMNInfoList())));
duCellList.forEach(cell -> plmnInfoList.addAll(cell.getpLMNInfoList()));
List<NSSAIData> nssaiData = new ArrayList<>();
plmnInfoList.forEach(plmnInfo -> nssaiData.add(plmnInfo.getsNSSAI()));
nssaiData.stream().filter(
nssai -> (!(Objects.isNull(nssai.getStatus()))) && nssai.getStatus().equalsIgnoreCase("active"))
.forEach(x -> activeNssaiDetails.put(x.getsNSSAI(), x.getConfigData()));
produceMeasurementCollectionFile(du, activeNssaiDetails, duCellList, ricId);
logger.info("PM data generated for DU : " + du.getgNBDUName() + " Id: " + du.getgNBDUId());
}
} catch (RansimException e) {
logger.debug("ERROR in closed lopp PM data generation : ");
logger.debug(e);
} catch (Exception exp) {
logger.debug(exp);
}
}
private void produceMeasurementCollectionFile(GNBDUModel du, Map<String, NSSAIConfig> activeNssaiDetails,
List<NRCellDUModel> duCellList, int ricId) throws RansimException {
logger.debug("produceing MeasurementCollectionFile ");
SlicingPmMessage pmMessage = new SlicingPmMessage();
pmMessage.setStartEpochMicrosec(System.currentTimeMillis() * 1000);
pmMessage.setSourceName(du.getgNBDUName());
LocalDateTime beginTime = LocalDateTime.now();
String beginTimeString = beginTime.toString();
MeasCollec measCollec = new MeasCollec(beginTimeString);
FileSender fileSender = new FileSender(du.getgNBDUName());
FileHeader fileHeader = new FileHeader("Prefix", "Acme Ltd", "32.435 V10.0", measCollec, fileSender);
Random r = new Random();
int jobId = r.nextInt((9999 - 1000) + 1) + 1000;
Job job = new Job(String.valueOf(jobId));
ReportingPeriod reportingPeriod = new ReportingPeriod("PT900S");
List<MeasType> measTypeList = setMeasurementTypes(activeNssaiDetails);
List<MeasValue> measValueList = setMeasurementValues(duCellList, getMaxVariation(ricId), measTypeList);
ManagedElement managedElement = new ManagedElement("r0.1", du.getgNBDUName());
LocalDateTime grabularityEndTime = LocalDateTime.now();
String grabularityEndTimeString = grabularityEndTime.toString();
GranularityPeriod granularityPeriod = new GranularityPeriod(grabularityEndTimeString, "PT900S");
MeasInfo measInfo =
new MeasInfo("measInfoIsVal", job, granularityPeriod, reportingPeriod, measTypeList, measValueList);
List<MeasInfo> measInfoList = new ArrayList<MeasInfo>();
measInfoList.add(measInfo);
MeasData measData = new MeasData(managedElement, measInfoList);
List<MeasData> measDataList = new ArrayList<MeasData>();
measDataList.add(measData);
LocalDateTime endTime = LocalDateTime.now();
String endTimeString = endTime.toString();
pmMessage.setLastEpochMicrosec(System.currentTimeMillis() * 1000);
MeasCollecEnd measCollecEnd = new MeasCollecEnd(endTimeString);
FileFooter fileFooter = new FileFooter(measCollecEnd);
MeasCollecFile measCollecFile = new MeasCollecFile(fileHeader, measDataList, fileFooter,
"http://www.3gpp.org/ftp/specs/archive/32_series/32.435#measCollec");
try {
String startDate = beginTimeString.replace(':', '-');
String endDate = endTimeString.replace(':', '-');
String fileName =
"A" + startDate + "-" + endDate + "-" + String.valueOf(jobId) + "-" + du.getgNBDUName() + ".xml";
pmMessage.setFileName(fileName);
Gson gson = new Gson();
String pmData = gson.toJson(measCollecFile);
pmMessage.setPmData(pmData);
closedLoopPmData(pmMessage);
} catch (Exception exp) {
logger.debug(exp);
}
}
private List<MeasValue> setMeasurementValues(List<NRCellDUModel> duCellList, double ricIdVariation,
List<MeasType> measTypeList) {
logger.debug("setting MeasurementValues");
List<MeasValue> measValueList = new ArrayList<MeasValue>();
duCellList.forEach(cell -> {
AtomicInteger pValue = new AtomicInteger(1);
List<Result> resultList = new ArrayList<>();
int prbs = cell.getPrbs();
measTypeList.forEach(meas -> {
int prbsUsed = (int) (Math.random() * ricIdVariation * prbs);
Result result = new Result(pValue.getAndIncrement(), prbsUsed);
resultList.add(result);
});
MeasValue measValue = new MeasValue(cell.getCellLocalId(), resultList, false);
measValueList.add(measValue);
});
return measValueList;
}
private double getMaxVariation(int ricId) throws RansimException {
switch (ricId) {
case 11:
// ricId11MaxVariation =
// Double.parseDouble(System.getProperty("RIC_11_VARIATION"));
return ricId11MaxVariation;
case 22:
return ricId22MaxVariation;
default:
throw new RansimException("Invalid RIC ID : valid Ids : [11,22] ");
}
}
private List<MeasType> setMeasurementTypes(Map<String, NSSAIConfig> activeNssaiDetails) {
logger.debug("setting MeasurementTypes");
List<MeasType> measTypeList = new ArrayList<MeasType>();
AtomicInteger pValue = new AtomicInteger(1);
activeNssaiDetails.forEach((nssai, configData) -> {
MeasType mesType1 = new MeasType("SM.PrbUsedDl." + nssai, pValue.getAndIncrement());
MeasType mesType2 = new MeasType("SM.PrbUsedUl." + nssai, pValue.getAndIncrement());
measTypeList.add(mesType1);
measTypeList.add(mesType2);
});
return measTypeList;
}
public static <T> ResponseEntity<List<GNBDUModel>> sendGetRequestToransimDb(String requestUrl) {
HttpHeaders headers = new HttpHeaders();
logger.info("sending request to ransimdb : " + requestUrl);
headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
HttpEntity<Void> requestEntity = new HttpEntity<>(headers);
try {
RestTemplate restTemplate = new RestTemplate();
return restTemplate.exchange(requestUrl, HttpMethod.GET, requestEntity,
new ParameterizedTypeReference<List<GNBDUModel>>() {});
} catch (Exception e) {
return new ResponseEntity<>(HttpStatus.NOT_FOUND);
}
}
public void closedLoopPmData(SlicingPmMessage pmMessage) {
Gson gson = new Gson();
String jsonStr = gson.toJson(pmMessage);
logger.info("ClosedPmData " + jsonStr);
String ipPort = RansimControllerServices.serverIdIpPortMapping.get(pmMessage.getSourceName());
if (ipPort != null && !ipPort.trim().equals("")) {
logger.info("Connection estabilished with ip: " + ipPort);
if (ipPort != null && !ipPort.trim().equals("")) {
Session clSess = RansimControllerServices.webSocketSessions.get(ipPort);
if (clSess != null) {
logger.info("PM Data message sent.");
RansimWebSocketServer.sendIntelligentSlicingPmData(jsonStr, clSess);
} else {
logger.info("No client session for " + ipPort);
}
} else {
logger.info("No client for this serverId");
}
} else {
logger.info("No client for ");
}
}
}
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