com.hazelcast.internal.monitor.impl.PartitionIndexOperationStats Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, 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.internal.monitor.impl;
/**
* The implementation of operation index stats specialized for partition indexes.
*/
public class PartitionIndexOperationStats implements IndexOperationStats {
private long entryCountDelta;
@Override
public long getEntryCountDelta() {
return entryCountDelta;
}
@Override
public long getMemoryCostDelta() {
// Memory cost tracking for HD indexes is done on the native memory
// allocator level.
return 0;
}
@Override
public void onEntryAdded(Object replacedValue, Object addedValue) {
if (replacedValue == null) {
++entryCountDelta;
}
}
@Override
public void onEntryRemoved(Object removedValue) {
if (removedValue != null) {
--entryCountDelta;
}
}
/**
* Resets this stats instance to be ready for reuse.
*/
public void reset() {
entryCountDelta = 0;
}
}