org.apache.activemq.artemis.core.server.balancing.pools.DiscoveryPool Maven / Gradle / Ivy
/**
* 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.activemq.artemis.core.server.balancing.pools;
import org.apache.activemq.artemis.core.server.balancing.targets.TargetFactory;
import java.util.concurrent.ScheduledExecutorService;
public class DiscoveryPool extends AbstractPool implements DiscoveryService.Listener {
private final DiscoveryService discoveryService;
public DiscoveryPool(TargetFactory targetFactory, ScheduledExecutorService scheduledExecutor,
int checkPeriod, DiscoveryService discoveryService) {
super(targetFactory, scheduledExecutor, checkPeriod);
this.discoveryService = discoveryService;
}
@Override
public void start() throws Exception {
super.start();
discoveryService.setListener(this);
discoveryService.start();
}
@Override
public void stop() throws Exception {
super.stop();
if (discoveryService != null) {
discoveryService.setListener(null);
discoveryService.stop();
}
}
@Override
public void entryAdded(DiscoveryService.Entry entry) {
addTarget(entry.getConnector(), entry.getNodeID());
}
@Override
public void entryRemoved(DiscoveryService.Entry entry) {
removeTarget(getTarget(entry.getNodeID()));
}
@Override
public void entryUpdated(DiscoveryService.Entry oldEntry, DiscoveryService.Entry newEntry) {
removeTarget(getTarget(oldEntry.getNodeID()));
addTarget(newEntry.getConnector(), newEntry.getNodeID());
}
}