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com.hazelcast.monitor.impl.NearCacheStatsImpl Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2015, 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.monitor.impl;
import com.hazelcast.com.hazelcast.com.eclipsesource.json.JsonObject;
import com.hazelcast.monitor.NearCacheStats;
import com.hazelcast.util.Clock;
import java.util.concurrent.atomic.AtomicLongFieldUpdater;
import static com.hazelcast.util.JsonUtil.getLong;
import static java.util.concurrent.atomic.AtomicLongFieldUpdater.newUpdater;
public class NearCacheStatsImpl implements NearCacheStats {
private static final double PERCENTAGE = 100.0;
private static final AtomicLongFieldUpdater OWNED_ENTRY_COUNT =
newUpdater(NearCacheStatsImpl.class, "ownedEntryCount");
private static final AtomicLongFieldUpdater OWNED_ENTRY_MEMORY_COST =
newUpdater(NearCacheStatsImpl.class, "ownedEntryMemoryCost");
private static final AtomicLongFieldUpdater HITS =
newUpdater(NearCacheStatsImpl.class, "hits");
private static final AtomicLongFieldUpdater MISSES =
newUpdater(NearCacheStatsImpl.class, "misses");
private volatile long creationTime;
private volatile long ownedEntryCount;
private volatile long ownedEntryMemoryCost;
private volatile long hits;
private volatile long misses;
public NearCacheStatsImpl() {
this.creationTime = Clock.currentTimeMillis();
}
@Override
public long getCreationTime() {
return creationTime;
}
@Override
public long getOwnedEntryCount() {
return ownedEntryCount;
}
public void setOwnedEntryCount(long ownedEntryCount) {
OWNED_ENTRY_COUNT.set(this, ownedEntryCount);
}
public void incrementOwnedEntryCount() {
OWNED_ENTRY_COUNT.incrementAndGet(this);
}
public void decrementOwnedEntryCount() {
OWNED_ENTRY_COUNT.decrementAndGet(this);
}
@Override
public long getOwnedEntryMemoryCost() {
return ownedEntryMemoryCost;
}
public void setOwnedEntryMemoryCost(long ownedEntryMemoryCost) {
OWNED_ENTRY_MEMORY_COST.set(this, ownedEntryMemoryCost);
}
public void incrementOwnedEntryMemoryCost(long ownedEntryMemoryCost) {
OWNED_ENTRY_MEMORY_COST.addAndGet(this, ownedEntryMemoryCost);
}
public void decrementOwnedEntryMemoryCost(long ownedEntryMemoryCost) {
OWNED_ENTRY_MEMORY_COST.addAndGet(this, -ownedEntryMemoryCost);
}
@Override
public long getHits() {
return hits;
}
public void incrementHits() {
HITS.incrementAndGet(this);
}
public void setHits(long hits) {
HITS.set(this, hits);
}
@Override
public long getMisses() {
return misses;
}
public void setMisses(long misses) {
MISSES.set(this, misses);
}
public void incrementMisses() {
MISSES.incrementAndGet(this);
}
@Override
public double getRatio() {
if (misses == 0) {
if (hits == 0) {
return Double.NaN;
} else {
return Double.POSITIVE_INFINITY;
}
} else {
return ((double) hits / misses) * PERCENTAGE;
}
}
@Override
public JsonObject toJson() {
JsonObject root = new JsonObject();
root.add("ownedEntryCount", ownedEntryCount);
root.add("ownedEntryMemoryCost", ownedEntryMemoryCost);
root.add("creationTime", creationTime);
root.add("hits", hits);
root.add("misses", misses);
return root;
}
@Override
public void fromJson(JsonObject json) {
ownedEntryCount = getLong(json, "ownedEntryCount", -1L);
ownedEntryMemoryCost = getLong(json, "ownedEntryMemoryCost", -1L);
creationTime = getLong(json, "creationTime", -1L);
hits = getLong(json, "hits", -1L);
misses = getLong(json, "misses", -1L);
}
@Override
public String toString() {
return "NearCacheStatsImpl{"
+ "ownedEntryCount=" + ownedEntryCount
+ ", ownedEntryMemoryCost=" + ownedEntryMemoryCost
+ ", creationTime=" + creationTime
+ ", hits=" + hits
+ ", misses=" + misses
+ ", ratio=" + String.format("%.1f%%", getRatio())
+ '}';
}
}