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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.a1pesimulator.service.ves;
import static java.util.Objects.isNull;
import static java.util.Objects.nonNull;
import java.text.MessageFormat;
import java.util.Collection;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ScheduledFuture;
import java.util.function.BiFunction;
import org.onap.a1pesimulator.data.ReportingMethodEnum;
import org.onap.a1pesimulator.data.RequestParameters;
import org.onap.a1pesimulator.data.fileready.RanPeriodicEvent;
import org.onap.a1pesimulator.data.fileready.RanPeriodicSendReport;
import org.onap.a1pesimulator.data.ves.VesEvent;
import org.onap.a1pesimulator.service.common.AbstractRanRunnable;
import org.onap.a1pesimulator.service.common.EventCustomizer;
import org.onap.a1pesimulator.service.fileready.RanFileReadyHolder;
import org.onap.a1pesimulator.service.fileready.RanSaveFileReadyRunnable;
import org.onap.a1pesimulator.service.fileready.RanSendReportsRunnable;
import org.onap.a1pesimulator.service.ves.RanEventCustomizerFactory.Mode;
import org.onap.a1pesimulator.util.VnfConfigReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.ResponseEntity;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.stereotype.Service;
import lombok.Getter;
@Service
public class RanVesHolder {
private static final Logger log = LoggerFactory.getLogger(RanVesHolder.class);
private final Map<String, RanPeriodicEvent> periodicEventsCache = new ConcurrentHashMap<>();
private final RanVesDataProvider vesDataProvider;
private final RanEventCustomizerFactory eventCustomizerFactory;
private final ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler;
private final Collection<OnEventAction> onEventActions;
private final RanFileReadyHolder ranFileReadyHolder;
private final RanVesSender vesSender;
private final VnfConfigReader vnfConfigReader;
private ThreadSendReportFunction threadSendReportFunction;
public RanVesHolder(ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler, RanFileReadyHolder ranFileReadyHolder, RanVesSender vesSender,
VnfConfigReader vnfConfigReader,
RanEventCustomizerFactory eventCustomizerFactory, RanVesDataProvider vesDataProvider,
Collection<OnEventAction> onEventActions) {
this.vesPmThreadPoolTaskScheduler = vesPmThreadPoolTaskScheduler;
this.ranFileReadyHolder = ranFileReadyHolder;
this.vesSender = vesSender;
this.vnfConfigReader = vnfConfigReader;
this.eventCustomizerFactory = eventCustomizerFactory;
this.vesDataProvider = vesDataProvider;
this.onEventActions = onEventActions;
}
/**
* Thread for periodical sending of PM Bulk Files and fileReady Events
*/
private void startSendingReports() {
if (isNull(threadSendReportFunction) || !threadSendReportFunction.isProcessRunning()) {
int repPeriod = vnfConfigReader.getVnfConfig().getRepPeriod();
threadSendReportFunction = new ThreadSendReportFunction(vesPmThreadPoolTaskScheduler, repPeriod, ranFileReadyHolder);
threadSendReportFunction.startEvent();
log.info("Start sending reports every {} seconds", repPeriod);
}
}
/**
* Stops sending the report after the last cell was stopped. It send the last report before stop completely
*/
private void stopSendingReports(String cellId) {
sendLastReport(cellId);
if (nonNull(threadSendReportFunction) && !isAnyEventRunning()) {
threadSendReportFunction.getRanPeriodicVesEvent().getScheduledFuture().cancel(false);
log.info("Stop sending reports every {} seconds", vnfConfigReader.getVnfConfig().getRepPeriod());
}
}
/**
* Sends the last report after specific cell was stopped
*/
private void sendLastReport(String cellId) {
if (nonNull(threadSendReportFunction)) {
log.trace("Send last report after stop for cell: {}", cellId);
ranFileReadyHolder.createPMBulkFileAndSendFileReadyMessageForCellId(cellId);
}
}
Map<String, RanPeriodicEvent> getPeriodicEventsCache() {
return periodicEventsCache;
}
ResponseEntity<String> startSendingVesEvents(String identifier, VesEvent vesEvent, Integer interval, ReportingMethodEnum reportingMethod) {
periodicEventsCache.compute(identifier,
new ThreadCacheUpdateFunction(vesPmThreadPoolTaskScheduler, eventCustomizerFactory.getEventCustomizer(vesEvent, Mode.REGULAR), onEventActions,
ranFileReadyHolder, vesSender, RequestParameters.builder()
.vesEvent(vesEvent).identifier(identifier).reportingMethod(reportingMethod).interval(interval).build()));
if (ReportingMethodEnum.FILE_READY.equals(reportingMethod)) {
startSendingReports();
}
return ResponseEntity.accepted().body("VES Event sending started");
}
ResponseEntity<String> startSendingFailureVesEvents(String identifier, VesEvent vesEvent, ReportingMethodEnum reportingMethod) {
periodicEventsCache.compute(identifier,
new ThreadCacheUpdateFunction(vesPmThreadPoolTaskScheduler, eventCustomizerFactory.getEventCustomizer(vesEvent, Mode.FAILURE), onEventActions,
ranFileReadyHolder,
vesSender, RequestParameters.builder().vesEvent(vesEvent).identifier(identifier).interval(vesDataProvider.getFailureVesInterval())
.reportingMethod(reportingMethod).build()));
if (ReportingMethodEnum.FILE_READY.equals(reportingMethod)) {
startSendingReports();
}
return ResponseEntity.accepted().body("Failure VES Event sending started");
}
Optional<RanPeriodicEvent> stopSendingVesEvents(String identifier) {
RanPeriodicEvent periodicEvent = periodicEventsCache.remove(identifier);
if (periodicEvent == null) {
return Optional.empty();
}
periodicEvent.getScheduledFuture().cancel(false);
stopSendingReports(identifier);
return Optional.of(periodicEvent);
}
Collection<String> getEnabledEventElementIdentifiers() {
return periodicEventsCache.keySet();
}
public boolean isEventEnabled(String identifier) {
return periodicEventsCache.containsKey(identifier);
}
public boolean isAnyEventRunning() {
return !periodicEventsCache.isEmpty();
}
RanPeriodicEvent getPeriodicEventForCell(String identifier) {
if (!periodicEventsCache.containsKey(identifier)) {
throw new IllegalArgumentException(
MessageFormat.format("Cannot find event for given source {0}", identifier));
}
return periodicEventsCache.get(identifier);
}
private static class ThreadCacheUpdateFunction
implements BiFunction<String, RanPeriodicEvent, RanPeriodicEvent> {
private final Integer interval;
private final ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler;
private final VesEvent vesEvent;
private final EventCustomizer eventCustomizer;
private final Collection<OnEventAction> onEventActions;
private final RanFileReadyHolder fileReadyHolder;
private final RanVesSender vesSender;
private final String cellId;
private final ReportingMethodEnum reportingMethod;
public ThreadCacheUpdateFunction(ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler, EventCustomizer eventCustomizer,
Collection<OnEventAction> onEventActions,
RanFileReadyHolder fileReadyHolder, RanVesSender vesSender, RequestParameters requestParameters) {
this.vesPmThreadPoolTaskScheduler = vesPmThreadPoolTaskScheduler;
this.vesEvent = requestParameters.getVesEvent();
this.interval = requestParameters.getInterval();
this.eventCustomizer = eventCustomizer;
this.onEventActions = onEventActions;
this.fileReadyHolder = fileReadyHolder;
this.vesSender = vesSender;
this.cellId = requestParameters.getIdentifier();
this.reportingMethod = requestParameters.getReportingMethod();
}
@Override
public RanPeriodicEvent apply(String key, RanPeriodicEvent value) {
if (value != null) {
// if thread is registered then cancel it and schedule a new one
value.getScheduledFuture().cancel(false);
}
AbstractRanRunnable ranRunnable = (ReportingMethodEnum.FILE_READY.equals(reportingMethod)) ?
new RanSaveFileReadyRunnable(fileReadyHolder, cellId, vesEvent, eventCustomizer, interval, onEventActions) :
new RanSendVesRunnable(vesSender, vesEvent, eventCustomizer, onEventActions);
ScheduledFuture<?> scheduledFuture =
vesPmThreadPoolTaskScheduler.scheduleAtFixedRate(ranRunnable, interval * 1000L);
return RanPeriodicEvent.builder().event(vesEvent).interval(interval).reportingMethod(reportingMethod.getValue()).scheduledFuture(scheduledFuture)
.ranRunnable(ranRunnable).build();
}
}
@Getter
private static class ThreadSendReportFunction {
protected final Integer interval;
protected final ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler;
protected RanPeriodicSendReport ranPeriodicVesEvent;
protected ScheduledFuture<?> scheduledFuture;
protected final RanFileReadyHolder ranFileReadyHolder;
public ThreadSendReportFunction(ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler, Integer interval, RanFileReadyHolder ranFileReadyHolder) {
this.vesPmThreadPoolTaskScheduler = vesPmThreadPoolTaskScheduler;
this.interval = interval;
this.ranFileReadyHolder = ranFileReadyHolder;
}
public void startEvent() {
RanSendReportsRunnable ranSendReportsRunnable =
new RanSendReportsRunnable(ranFileReadyHolder);
scheduledFuture = vesPmThreadPoolTaskScheduler.scheduleAtFixedRate(ranSendReportsRunnable, interval * 1000L);
this.ranPeriodicVesEvent = RanPeriodicSendReport.builder().interval(interval).scheduledFuture(scheduledFuture)
.ranSendReportsRunnable(ranSendReportsRunnable).build();
}
public boolean isProcessRunning() {
return (nonNull(scheduledFuture) && !(scheduledFuture.isCancelled() || scheduledFuture.isDone()));
}
}
}
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