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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 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.ves.Event;
import org.onap.a1pesimulator.data.ves.RanPeriodicVesEvent;
import org.onap.a1pesimulator.service.ves.RanEventCustomizerFactory.Mode;
import org.onap.a1pesimulator.service.ves.RanSendVesRunnable.EventCustomizer;
import org.springframework.http.ResponseEntity;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.stereotype.Service;
@Service
public class RanVesHolder {
private final Map<String, RanPeriodicVesEvent> periodicEventsCache = new ConcurrentHashMap<>();
private final RanVesDataProvider vesDataProvider;
private final RanEventCustomizerFactory eventCustomizerFactory;
private final ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler;
private final Collection<OnEventAction> onEventActions;
private final RanVesSender vesSender;
public RanVesHolder(ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler, RanVesSender vesSender,
RanEventCustomizerFactory eventCustomizerFactory, RanVesDataProvider vesDataProvider,
Collection<OnEventAction> onEventActions) {
this.vesPmThreadPoolTaskScheduler = vesPmThreadPoolTaskScheduler;
this.vesSender = vesSender;
this.eventCustomizerFactory = eventCustomizerFactory;
this.vesDataProvider = vesDataProvider;
this.onEventActions = onEventActions;
}
Map<String, RanPeriodicVesEvent> getPeriodicEventsCache() {
return periodicEventsCache;
}
ResponseEntity<String> startSendingVesEvents(String identifier, Event vesEvent, Integer interval) {
periodicEventsCache.compute(identifier,
new ThreadCacheUpdateFunction(vesPmThreadPoolTaskScheduler, vesEvent, interval,
eventCustomizerFactory.getEventCustomizer(vesEvent, Mode.REGULAR), onEventActions, vesSender));
return ResponseEntity.accepted().body("VES Event sending started");
}
ResponseEntity<String> startSendingFailureVesEvents(String identifier, Event vesEvent) {
periodicEventsCache.compute(identifier, new ThreadCacheUpdateFunction(vesPmThreadPoolTaskScheduler, vesEvent,
vesDataProvider.getFailureVesInterval(),
eventCustomizerFactory.getEventCustomizer(vesEvent, Mode.FAILURE), onEventActions, vesSender));
return ResponseEntity.accepted().body("Failure VES Event sending started");
}
Optional<RanPeriodicVesEvent> stopSendingVesEvents(String identifier) {
RanPeriodicVesEvent periodicEvent = periodicEventsCache.remove(identifier);
if (periodicEvent == null) {
return Optional.empty();
}
periodicEvent.getScheduledFuture().cancel(false);
return Optional.of(periodicEvent);
}
Collection<String> getEnabledEventElementIdentifiers() {
return periodicEventsCache.keySet();
}
public boolean isEventEnabled(String identifier) {
return periodicEventsCache.containsKey(identifier);
}
Event getEventStructure(String identifier) {
if (!periodicEventsCache.containsKey(identifier)) {
throw new IllegalArgumentException(
MessageFormat.format("Cannot find event for given source {0}", identifier));
}
return periodicEventsCache.get(identifier).getEvent();
}
private static class ThreadCacheUpdateFunction
implements BiFunction<String, RanPeriodicVesEvent, RanPeriodicVesEvent> {
private final Integer interval;
private final ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler;
private final Event vesEvent;
private final EventCustomizer eventCustomizer;
private final Collection<OnEventAction> onEventActions;
private final RanVesSender vesSender;
public ThreadCacheUpdateFunction(ThreadPoolTaskScheduler vesPmThreadPoolTaskScheduler, Event vesEvent,
Integer interval, EventCustomizer eventCustomizer, Collection<OnEventAction> onEventActions,
RanVesSender vesSender) {
this.vesPmThreadPoolTaskScheduler = vesPmThreadPoolTaskScheduler;
this.vesEvent = vesEvent;
this.interval = interval;
this.eventCustomizer = eventCustomizer;
this.onEventActions = onEventActions;
this.vesSender = vesSender;
}
@Override
public RanPeriodicVesEvent apply(String key, RanPeriodicVesEvent value) {
if (value != null) {
// if thread is registered then cancel it and schedule a new one
value.getScheduledFuture().cancel(false);
}
RanSendVesRunnable sendVesRunnable =
new RanSendVesRunnable(vesSender, vesEvent, eventCustomizer, onEventActions);
ScheduledFuture<?> scheduledFuture =
vesPmThreadPoolTaskScheduler.scheduleAtFixedRate(sendVesRunnable, interval * 1000L);
return RanPeriodicVesEvent.builder().event(vesEvent).interval(interval).scheduledFuture(scheduledFuture)
.sendVesRunnable(sendVesRunnable).build();
}
}
}
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