/*
* Copyright 2013-2014 Erudika. http://erudika.com
*
* 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.
*
* For issues and patches go to: https://github.com/erudika
*/
package com.erudika.para.cache;
import com.erudika.para.Para;
import com.erudika.para.utils.Config;
import com.hazelcast.config.AwsConfig;
import com.hazelcast.config.JoinConfig;
import com.hazelcast.config.MapConfig;
import com.hazelcast.config.MaxSizeConfig;
import static com.hazelcast.config.MaxSizeConfig.MaxSizePolicy.USED_HEAP_PERCENTAGE;
import com.hazelcast.config.MulticastConfig;
import com.hazelcast.config.NetworkConfig;
import com.hazelcast.config.TcpIpConfig;
import com.hazelcast.core.Hazelcast;
import com.hazelcast.core.HazelcastInstance;
/**
* Helper functions for {@link HazelcastCache}.
*
* @author Alex Bogdanovski [alex@erudika.com]
* @see HazelcastCache
*/
public final class HazelcastUtils {
private static HazelcastInstance hcInstance;
private HazelcastUtils() { }
/**
* Initializes a new Hazelcast instance with default settings.
* @return a Hazelcast instance
*/
public static HazelcastInstance getClient() {
if (hcInstance == null) {
hcInstance = Hazelcast.getHazelcastInstanceByName(getNodeName());
if (hcInstance != null) {
return hcInstance;
}
com.hazelcast.config.Config cfg = new com.hazelcast.config.Config();
cfg.setInstanceName(getNodeName());
MapConfig mapcfg = new MapConfig("default");
mapcfg.setEvictionPercentage(25);
mapcfg.setEvictionPolicy(MapConfig.EvictionPolicy.LRU);
// mapcfg.setMapStoreConfig(new MapStoreConfig().setEnabled(false).setClassName(NODE_NAME));
mapcfg.setMaxSizeConfig(new MaxSizeConfig().setSize(25).setMaxSizePolicy(USED_HEAP_PERCENTAGE));
cfg.addMapConfig(mapcfg);
cfg.setProperty("hazelcast.jmx", "true");
cfg.setProperty("hazelcast.logging.type", "slf4j");
if (Config.IN_PRODUCTION) {
cfg.setNetworkConfig(new NetworkConfig().setJoin(new JoinConfig().
setMulticastConfig(new MulticastConfig().setEnabled(false)).
setTcpIpConfig(new TcpIpConfig().setEnabled(false)).
setAwsConfig(new AwsConfig().setEnabled(true).
setAccessKey(Config.AWS_ACCESSKEY).
setSecretKey(Config.AWS_SECRETKEY).
setRegion(Config.AWS_REGION).
setSecurityGroupName(Config.APP_NAME_NS))));
}
hcInstance = Hazelcast.newHazelcastInstance(cfg);
Para.addDestroyListener(new Para.DestroyListener() {
public void onDestroy() {
shutdownClient();
}
});
}
return hcInstance;
}
/**
* This method stops the Hazelcast instance if it is running.
* <b>There's no need to call this explicitly!</b>
*/
public static void shutdownClient() {
if (hcInstance != null) {
hcInstance.shutdown();
hcInstance = null;
}
}
private static String getNodeName() {
return Config.PARA.concat("-hc-").concat(Config.WORKER_ID);
}
}