package org.infinispan.lucene.testutils;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.SynchronousQueue;
import org.infinispan.Cache;
import org.infinispan.configuration.cache.ConfigurationBuilder;
import org.infinispan.manager.CacheContainer;
import org.infinispan.test.TestingUtil;
import org.infinispan.test.fwk.TestCacheManagerFactory;
import net.jcip.annotations.GuardedBy;
import net.jcip.annotations.ThreadSafe;
/**
* CacheFactory useful to create clustered caches on-demand in several tests.
* The same thread is used to actually create each cache, making it possible to create
* several connected caches even though the testing suite in Infinispan isolates different threads.
*
* @author Sanne Grinovero
* @since 4.0
*/
@ThreadSafe
@SuppressWarnings("unchecked")
public class ClusteredCacheFactory {
private final BlockingQueue<ConfigurationBuilder> requests = new SynchronousQueue<ConfigurationBuilder>();
private final BlockingQueue<Cache> results = new SynchronousQueue<Cache>();
private final ExecutorService executor = Executors.newSingleThreadExecutor();
private final ConfigurationBuilder cfg;
@GuardedBy("this") private boolean started = false;
@GuardedBy("this") private boolean stopped = false;
/**
* Create a new ClusteredCacheFactory.
*
* @param cfg defines the configuration used to build the caches
*/
public ClusteredCacheFactory(ConfigurationBuilder cfg) {
this.cfg = cfg;
}
/**
* Create a cache using default configuration
* @throws InterruptedException if interrupted while waiting for the cache construction
*/
public synchronized Cache createClusteredCache() throws InterruptedException {
if (!started)
throw new IllegalStateException("was not started");
if (stopped)
throw new IllegalStateException("was already stopped");
requests.put(cfg);
return results.take();
}
public Cache createClusteredCacheWaitingForNodesView(int expectedGroupSize) throws InterruptedException {
Cache cache = createClusteredCache();
TestingUtil.blockUntilViewReceived(cache, expectedGroupSize, 10000, false);
return cache;
}
public synchronized void start() {
if (started)
throw new IllegalStateException("was already started");
if (stopped)
throw new IllegalStateException("was already stopped");
started = true;
executor.execute(new Worker());
}
public synchronized void stop() {
if (stopped)
throw new IllegalStateException("was already stopped");
if (!started)
throw new IllegalStateException("was not started");
stopped = true;
executor.shutdownNow();
}
private class Worker implements Runnable {
@Override
public void run() {
while (true) {
try {
ConfigurationBuilder configuration = requests.take();
CacheContainer cacheContainer = TestCacheManagerFactory.createClusteredCacheManager(configuration);
Cache cache = cacheContainer.getCache();
results.put(cache);
} catch (InterruptedException e) {
return;
}
}
}
}
}