/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You 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 org.apache.geode.modules.session.bootstrap;
import org.apache.geode.cache.CacheClosedException;
import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.control.RebalanceResults;
import org.apache.geode.modules.util.RegionHelper;
/**
* This is a singleton class which maintains configuration properties as well as starting a
* Peer-To-Peer cache.
*/
public class PeerToPeerCache extends AbstractCache {
protected static final String DEFAULT_CACHE_XML_FILE_NAME = "cache-peer.xml";
static {
instance = new PeerToPeerCache();
}
private PeerToPeerCache() {
// Singleton
super();
}
public static AbstractCache getInstance() {
return instance;
}
@Override
protected void createOrRetrieveCache() {
if (getLogger().isDebugEnabled()) {
getLogger().debug("Creating cache");
}
// Get the existing cache if any
try {
this.cache = CacheFactory.getAnyInstance();
} catch (CacheClosedException e) {
}
// If no cache exists, create one
String message = null;
if (this.cache == null || cache.isClosed()) {
this.cache = new CacheFactory(createDistributedSystemProperties()).create();
message = "Created ";
} else {
message = "Retrieved ";
}
getLogger().info(message + this.cache);
}
@Override
protected void rebalanceCache() {
try {
getLogger().info("Rebalancing: " + this.cache);
RebalanceResults results = RegionHelper.rebalanceCache(this.cache);
if (getLogger().isDebugEnabled()) {
getLogger().debug("Done rebalancing: " + this.cache);
getLogger().debug(RegionHelper.getRebalanceResultsMessage(results));
}
} catch (Exception e) {
getLogger().warn("Rebalance failed because of the following exception:", e);
}
}
@Override
protected String getDefaultCacheXmlFileName() {
return DEFAULT_CACHE_XML_FILE_NAME;
}
}