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/*
* Copyright (C) 2021 Samsung Electronics
* 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
*/
package org.onap.rapp.datacollector.service;
import java.math.BigInteger;
import java.time.OffsetDateTime;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import org.onap.rapp.datacollector.entity.DataAggregationInfo;
import org.onap.rapp.datacollector.entity.pm.AggregatedPM;
import org.onap.rapp.datacollector.entity.pm.PMData;
import org.onap.rapp.datacollector.entity.ves.AdditionalMeasurements;
import org.onap.rapp.datacollector.entity.ves.Event;
import org.onap.rapp.datacollector.entity.ves.EventAPI;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
@Service("pmService")
public class PMService {
private static final Logger logger = LoggerFactory.getLogger(PMService.class);
public static final String CELL_FIELD_NAME = "identifier";
public static final String VALUE_NAME = "value";
public static final int CELL_INDEX = 0;
private static final int MICRO_SECONDS_OF_SECOND = 1_000_000;
private final VesPersisterSqlImpl vesPersisterSql;
private final DataAggregationService aggregationService;
private final ParserFactory parser;
public PMService(VesPersisterSqlImpl vesPersisterSql, DataAggregationService aggregationService, ParserFactory parser) {
this.vesPersisterSql = vesPersisterSql;
this.aggregationService = aggregationService;
this.parser = parser;
}
public AggregatedPM getAggregatedPMDataForTimeInterval(int slot, int count, OffsetDateTime startTime) {
DataAggregationInfo aggregationInfo = buildDataAggregationInfo(slot, count, startTime);
logger.info("Start Time: {}, EndTime: {}", aggregationInfo.getStartTime(), aggregationInfo.getEndTime());
List<EventAPI> eventsOfInterval = vesPersisterSql.findEventsByTimeWindow(aggregationInfo.getStartTime(), aggregationInfo.getEndTime());
Map<String, List<Event>> eventsByCell = groupByCell(eventsOfInterval);
List<PMData> pmDataList = calculateAggregatedData(aggregationInfo, eventsByCell);
return new AggregatedPM(pmDataList, pmDataList.size());
}
private DataAggregationInfo buildDataAggregationInfo(int slot, int count, OffsetDateTime startTime) {
long timeIntervalStartTime = startTime.toEpochSecond() * MICRO_SECONDS_OF_SECOND;
long timeIntervalEndTime = getTimeIntervalEndTime(slot, count, timeIntervalStartTime);
return DataAggregationInfo.builder()
.startTime(timeIntervalStartTime)
.endTime(timeIntervalEndTime)
.slot(slot * MICRO_SECONDS_OF_SECOND)
.build();
}
private long getTimeIntervalEndTime(int slot, int count, long startDate) {
BigInteger timeIntervalMicrosec = BigInteger.valueOf(slot).multiply(BigInteger.valueOf(count)).multiply(BigInteger.valueOf(MICRO_SECONDS_OF_SECOND));
return startDate + timeIntervalMicrosec.longValue();
}
private Map<String, List<Event>> groupByCell(List<EventAPI> events) {
return events.stream().flatMap(e -> parser.getParsedEvents(e.getRawdata()).stream())
.collect(Collectors.groupingBy(this::getCellFromVes));
}
private String getCellFromVes(Event event) {
AdditionalMeasurements cellField = event.getMeasurementFields().getAdditionalMeasurements()
.stream().filter(am -> am.getName().equals(CELL_FIELD_NAME)).findAny().orElseThrow();
return cellField.getValues().get(CELL_INDEX).getParameterValue();
}
private List<PMData> calculateAggregatedData(DataAggregationInfo dataAggregationInfo, Map<String, List<Event>> events) {
return events.entrySet().stream()
.map(e -> aggregationService.getAggregatedDataFromEventsForCell(e.getKey(), e.getValue(), dataAggregationInfo))
.collect(Collectors.toList());
}
}
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