/**
* 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.cxf.ws.eventing.backend.database;
import java.util.List;
import java.util.UUID;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.logging.Logger;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.ws.eventing.shared.faults.UnknownSubscription;
/**
* Default implementation of a Subscription Database. Basically it is simply a wrapper
* around a List<SubscriptionTicket> with some convenience methods. The underlying List
* is a thread-safe CopyOnWriteArrayList.
*/
public class SubscriptionDatabaseImpl implements SubscriptionDatabase {
private static final Logger LOG = LogUtils.getLogger(SubscriptionDatabaseImpl.class);
private final List<SubscriptionTicket> ticketList;
public SubscriptionDatabaseImpl() {
LOG.info("Instantiating SubscriptionDatabaseImpl");
ticketList = new CopyOnWriteArrayList<SubscriptionTicket>();
}
@Override
public void addTicket(SubscriptionTicket ticket) {
ticketList.add(ticket);
LOG.info("SubscriptionDatabaseImpl accepted ticket for subscription: " + ticket.getUuid());
}
@Override
public List<SubscriptionTicket> getTickets() {
return ticketList;
}
/**
* Searches the database for a ticket with the specified UUID
*
* @param id the UUID which will be searched for
* @return the ticket, or null of no ticket with this UUID exists
*/
@Override
public SubscriptionTicket findById(UUID id) {
for (SubscriptionTicket ticket : ticketList) {
if (ticket.getUuid().equals(id)) {
return ticket;
}
}
return null;
}
/**
* Removes a ticket by UUID from the database.
*
* @param id the UUID of the ticket to remove
* @throws UnknownSubscription if unknown UUID is supplied
*/
@Override
public synchronized void removeTicketByUUID(UUID id) {
boolean removed = false;
for (SubscriptionTicket ticket : ticketList) {
if (ticket.getUuid().equals(id)) {
ticketList.remove(ticket);
removed = true;
break;
}
}
if (!removed) {
throw new UnknownSubscription();
}
}
}