/*
* (C) Copyright 2014 Nuxeo SAS (http://nuxeo.com/) and contributors.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Lesser General Public License
* (LGPL) version 2.1 which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/lgpl-2.1.html
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Contributors:
* Maxime Hilaire
*
*/
package org.nuxeo.ecm.core.cache;
import java.io.Serializable;
import java.util.concurrent.TimeUnit;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
/**
* Default in memory implementation for cache management based on guava
*
* @since 6.0
*/
public class InMemoryCacheImpl extends AbstractCache {
public InMemoryCacheImpl(CacheDescriptor desc) {
super(desc);
CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder();
builder = builder.expireAfterWrite(desc.ttl, TimeUnit.MINUTES);
if (desc.options.containsKey("concurrencyLevel")) {
builder = builder.concurrencyLevel(Integer.valueOf(
desc.options.get("concurrencyLevel")).intValue());
}
if (desc.options.containsKey("maxSize")) {
builder = builder.maximumSize(Integer.valueOf(
desc.options.get("maxSize")).intValue());
}
cache = builder.build();
}
protected static final Log log = LogFactory.getLog(InMemoryCacheImpl.class);
protected final Cache<String, Serializable> cache;
/**
* Get the instance cache
*
* @return the Guava instance cache used in this nuxeo cache
* @since 6.0
*/
public Cache<String, Serializable> getGuavaCache() {
return cache;
}
@Override
public Serializable get(String key) {
if (key == null) {
return null;
} else {
return cache.getIfPresent(key);
}
}
@Override
public void invalidate(String key) {
if (key != null) {
cache.invalidate(key);
} else {
log.warn(String.format(
"Can't invalidate a null key for the cache '%s'!", name));
}
}
@Override
public void invalidateAll() {
cache.invalidateAll();
}
@Override
public void put(String key, Serializable value) {
if (key != null && value != null) {
cache.put(key, value);
} else {
log.warn(String.format(
"Can't put a null key nor a null value in the cache '%s'!",
name));
}
}
}