package org.infinispan.lucene.impl;
import java.io.IOException;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.LockFactory;
import org.infinispan.Cache;
/**
* Default factory for locks obtained in <code>InfinispanDirectory</code>, this factory produces instances of
* <code>BaseLuceneLock</code>.
*
* @author Sanne Grinovero
* @author gustavonalle
* @see BaseLuceneLock
* @since 4.0
*/
public class BaseLockFactory extends LockFactory {
public static final BaseLockFactory INSTANCE = new BaseLockFactory();
/**
* {@inheritDoc}
*/
@Override
public BaseLuceneLock obtainLock(Directory dir, String lockName) throws IOException {
if (!(dir instanceof DirectoryLucene)) {
throw new UnsupportedOperationException("BaseLuceneLock can only be used with DirectoryLucene, got: " + dir);
}
DirectoryLucene infinispanDirectory = (DirectoryLucene) dir;
int affinitySegmentId = infinispanDirectory.getAffinitySegmentId();
Cache distLockCache = infinispanDirectory.getDistLockCache();
String indexName = infinispanDirectory.getIndexName();
BaseLuceneLock lock = new BaseLuceneLock(distLockCache, indexName, lockName, affinitySegmentId);
CommonLockObtainUtils.attemptObtain(lock);
return lock;
}
}