/*
* Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.jmx;
import com.hazelcast.core.IList;
import com.hazelcast.core.ItemEvent;
import com.hazelcast.core.ItemListener;
import java.util.concurrent.atomic.AtomicLong;
@ManagedDescription("IList")
public class ListMBean extends HazelcastMBean<IList<?>> {
private AtomicLong totalAddedItemCount = new AtomicLong();
private AtomicLong totalRemovedItemCount = new AtomicLong();
private final String registrationId;
protected ListMBean(IList<?> managedObject, ManagementService service) {
super(managedObject, service);
objectName = service.createObjectName("IList", managedObject.getName());
//todo: using the event system to register number of adds/remove is an very expensive price to pay.
ItemListener itemListener = new ItemListener() {
@Override
public void itemAdded(ItemEvent item) {
totalAddedItemCount.incrementAndGet();
}
@Override
public void itemRemoved(ItemEvent item) {
totalRemovedItemCount.incrementAndGet();
}
};
registrationId = managedObject.addItemListener(itemListener, false);
}
@ManagedAnnotation(value = "clear", operation = true)
@ManagedDescription("Clear List")
public void clear() {
managedObject.clear();
}
@ManagedAnnotation("name")
@ManagedDescription("Name of the DistributedObject")
public String getName() {
return managedObject.getName();
}
@ManagedAnnotation("totalAddedItemCount")
public long getTotalAddedItemCount() {
return totalAddedItemCount.get();
}
@ManagedAnnotation("totalRemovedItemCount")
public long getTotalRemovedItemCount() {
return totalRemovedItemCount.get();
}
public void preDeregister() throws Exception {
super.preDeregister();
try {
managedObject.removeItemListener(registrationId);
} catch (Exception ignored) {
}
}
}