/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.usergrid.persistence.collection.uniquevalues;
import akka.actor.ActorRef;
import akka.actor.UntypedActor;
import akka.cluster.pubsub.DistributedPubSub;
import akka.cluster.pubsub.DistributedPubSubMediator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Updates local unique values cache based on reservations and cancellations.
*/
public class ReservationCacheActor extends UntypedActor {
private static final Logger logger = LoggerFactory.getLogger( ReservationCacheActor.class );
int reservationCount = 0;
int cancellationCount = 0;
public ReservationCacheActor() {
// subscribe to the topic named "content"
ActorRef mediator = DistributedPubSub.get(getContext().system()).mediator();
mediator.tell(new DistributedPubSubMediator.Subscribe("content", getSelf()), getSelf());
}
public void onReceive( Object msg ) {
if ( msg instanceof UniqueValueActor.Reservation ) {
UniqueValueActor.Reservation res = (UniqueValueActor.Reservation)msg;
ReservationCache.getInstance().cacheReservation( res );
if ( ++reservationCount % 10 == 0 ) {
if(logger.isDebugEnabled()) {
logger.debug("Received {} reservations cache size {}",
reservationCount, ReservationCache.getInstance().getSize());
}
}
} else if ( msg instanceof UniqueValueActor.Cancellation ) {
UniqueValueActor.Cancellation can = (UniqueValueActor.Cancellation) msg;
ReservationCache.getInstance().cancelReservation(can);
if (logger.isDebugEnabled()) {
if (++cancellationCount % 10 == 0) {
logger.debug("Received {} cancellations", cancellationCount);
} else {
logger.debug("Removing cancelled {} from reservation cache", can.getConsistentHashKey());
}
}
} else if ( msg instanceof UniqueValueActor.Response ) {
UniqueValueActor.Response response = (UniqueValueActor.Response) msg;
ReservationCache.getInstance().cancelReservation( response );
if(logger.isDebugEnabled()) {
logger.debug("Removing completed {} from reservation cache", response.getConsistentHashKey());
}
} else if (msg instanceof DistributedPubSubMediator.SubscribeAck) {
if(logger.isDebugEnabled()) {
logger.debug("subscribing");
}
} else {
unhandled( msg );
}
}
}