com.hazelcast.cache.impl.LatencyTrackingCacheLoader Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2018, 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.cache.impl;
import com.hazelcast.internal.diagnostics.StoreLatencyPlugin;
import com.hazelcast.internal.diagnostics.StoreLatencyPlugin.LatencyProbe;
import javax.cache.integration.CacheLoader;
import javax.cache.integration.CacheLoaderException;
import java.util.Map;
public class LatencyTrackingCacheLoader implements CacheLoader {
static final String KEY = "CacheLoaderLatency";
private final CacheLoader delegate;
private final LatencyProbe loadProbe;
private final LatencyProbe loadAllProbe;
public LatencyTrackingCacheLoader(CacheLoader delegate, StoreLatencyPlugin plugin, String cacheName) {
this.delegate = delegate;
this.loadProbe = plugin.newProbe(KEY, cacheName, "load");
this.loadAllProbe = plugin.newProbe(KEY, cacheName, "loadAll");
}
@Override
public V load(K k) throws CacheLoaderException {
long startNanos = System.nanoTime();
try {
return delegate.load(k);
} finally {
loadProbe.recordValue(System.nanoTime() - startNanos);
}
}
@Override
public Map loadAll(Iterable iterable) throws CacheLoaderException {
long startNanos = System.nanoTime();
try {
return delegate.loadAll(iterable);
} finally {
loadAllProbe.recordValue(System.nanoTime() - startNanos);
}
}
}