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Merged BRANCHES/DEV/mward/clustering_p1 to HEAD:

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41454: ALF-15881: Disabling clustering in community
   41500: ALF-15883: Move configuration files
   41503: ALF-15884: Move cluster package to enterprise repository project
   41504: ALF-15884: Move cluster package to enterprise repository project
   41519: ALF-15886: References/definition for "hazelcastInstanceFactory" must be in enterprise repo only
   41523: ALF-15886: References/definition for "hazelcastInstanceFactory" must be in enterprise repo only
   41525: ALF-15886: References/definition for "hazelcastInstanceFactory" must be in enterprise repo only
   41527: ALF-15886: References/definition for "hazelcastInstanceFactory" must be in enterprise repo only
   41530: ALF-15886: remove import for class no longer in project.
   41532: ALF-15887: LockStoreFactoryImpl must be separated into community and enterprise versions
   41535: ALF-15883: Move configuration files
   41561: ALF-15886: factory class to create key fileserver config beans.
   41578: ALF-15888: separate transactional and shared cache bean definitions.
   41623: ALF-15888: first pass at DefaultSimpleCache implementation.
   41646: ALF-15888: move ehcache-default.xml
   41651: ALF-15888: update javadoc to reflect changes
   41762: ALF-15888: improve cache test to prove that null values are stored correctly.
   41812: ALF-15888: added new cache provider for use by hibernate: DefaultCacheProvider.
   41830: ALF-15888: make DefaultSimpleCache BeanNameAware to help with debugging etc.
   41831: ALF-15888: missing file from commit - adds enterprise override capability for hibernate-cfg.properties
   41850: ALF-15888: move tickets cache to cache-context.xml
   41857: ALF-15888: make RemoteAlfrescoTicketServiceImpl cache implementation agnostic.
   41866: ALF-15888: extract caches from fileservers and web-client and provide enterprise overrides
   41881: ALF-15888: replace use of EhCacheAdapter with DefaultSimpleCache and SimpleCache interface.
   41884: ALF-15888: added DefaultSimpleCache configuration to CachingContentStore sample XML.
   41885: ALF-15888: move EhCacheAdapter to new package.
   41886: ALF-15888: correct absolute class names in config for EhCacheAdapter.
   41892: ALF-15888: fix CachingContentStore tests.
   41897: ALF-15888: move CacheTest and config to new package.
   41898: ALF-15888: remove redundant directory
   41899: ALF-15889: move EhCacheManagerFactoryBean to new package.
   41902: ALF-15889: moved EhCacheTracerJob to new package.
   41913: ALF-15889: move InternalEhCacheManagerFactoryBean to new package.
   41916: ALF-15889: move AlfrescoCacheManagerPeerProviderFactory to new package.
   41937: ALF-15889: decouple TransactionalCache from EhCache
   41966: ALF-15889: decouple RetryingTransactionHelper from ehcache.
   41989: ALF-15889: added ContextListener test.
   41996: ALF-15889: moved cache test to its own class.
   41998: ALF-15889: move ehcache jars.
   41999: ALF-15889: modify .classpath to reflect jar moves.
   42037: ALF-15889: update poms to reflect lib moves.
   42038: ALF-15889: add eclipse library reference to enterprise projects.
   42093: ALF-15916: moved core properties to enterprise
   42114: ALF-15888: externalized cache sizes to repository.properties.
   42127: ALF-16136: move re-indexing configuration
   42140: ALF-16136: move cluster check property.
   42186: ALF-15889: removing seemingly redundant test config file.
   42187: ALF-15888: tidy up config changes.
   42189: ALF-15888: cleanup config
   42190: ALF-15888: config cleanup
   42191: ALF-15888: config cleanup
   42198: ALF-16136: restored lost property



git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@42210 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Matt Ward
2012-10-01 12:17:53 +00:00
parent 131080b564
commit 511af90d5c
79 changed files with 1471 additions and 7954 deletions
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139
source/java/org/alfresco/repo/cluster/HazelcastInstanceFactory.java
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@@ -1,139 +0,0 @@
/*
* Copyright (C) 2005-2012 Alfresco Software Limited.
*
* This file is part of Alfresco
*
* Alfresco is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Alfresco 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.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
*/
package org.alfresco.repo.cluster;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import org.alfresco.util.PropertyCheck;
import com.hazelcast.config.Config;
import com.hazelcast.core.Hazelcast;
import com.hazelcast.core.HazelcastInstance;
/**
* Provides a way of lazily creating HazelcastInstances for a given configuration.
* The HazelcastInstance will not be created until {@link #getInstance()} is called.
* <p>
* An intermediary class such as this is required in order to avoid starting
* Hazelcast instances when clustering is not configured/required. Otherwise
* simply by defining a HazelcastInstance bean clustering would spring into life.
* <p>
* Please note this class provides non-static access deliberately, and should be
* injected into any clients that require its services.
*
* @author Matt Ward
*/
public class HazelcastInstanceFactory
{
private Config config;
private HazelcastInstance hazelcastInstance;
/** Guards {@link #config} and {@link #hazelcastInstance} */
private ReentrantReadWriteLock rwLock = new ReentrantReadWriteLock();
public HazelcastInstance getInstance()
{
rwLock.readLock().lock();
try
{
if (hazelcastInstance != null)
{
return hazelcastInstance;
}
}
finally
{
rwLock.readLock().unlock();
}
// hazelcastInstance is null, so create it.
rwLock.writeLock().lock();
try
{
// Double check condition hasn't changed in between locks.
if (hazelcastInstance == null)
{
hazelcastInstance = Hazelcast.newHazelcastInstance(config);
}
return hazelcastInstance;
}
finally
{
rwLock.writeLock().unlock();
}
}
/**
* Checks whether hazelcast has been given a valid cluster name. If so,
* then clustering is considered enabled. This condition should be checked
* before calling {@link #getInstance()}.
*
* @return true if clustering is enabled, false otherwise.
*/
public boolean isClusteringEnabled()
{
rwLock.readLock().lock();
try
{
String clusterName = config.getGroupConfig().getName();
return (PropertyCheck.isValidPropertyString(clusterName));
}
finally
{
rwLock.readLock().unlock();
}
}
/**
* Retrieve the name of the cluster for the configuration used by this factory.
*
* @return String - the cluster name.
*/
public String getClusterName()
{
rwLock.readLock().lock();
try
{
String clusterName = config.getGroupConfig().getName();
return clusterName;
}
finally
{
rwLock.readLock().unlock();
}
}
/**
* Sets the Hazelcast configuration that will be used by this factory when
* creating the HazelcastInstance.
*
* @param config Hazelcast configuration
*/
public void setConfig(Config config)
{
rwLock.writeLock().lock();
try
{
this.config = config;
}
finally
{
rwLock.writeLock().unlock();
}
}
}