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/*
* SonarQube, open source software quality management tool.
* Copyright (C) 2008-2014 SonarSource
* mailto:contact AT sonarsource DOT com
*
* SonarQube 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.
*
* SonarQube 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.batch.index;
import com.google.common.collect.Maps;
import java.util.Map;
import java.util.Map.Entry;
import com.google.common.base.Preconditions;
import com.persistit.Exchange;
import com.persistit.Value;
import com.persistit.encoding.CoderManager;
import com.persistit.Persistit;
import com.persistit.encoding.ValueCoder;
import com.persistit.exception.PersistitException;
import com.persistit.Volume;
import org.picocontainer.Startable;
import org.sonar.api.batch.BatchSide;
@BatchSide
public class Caches implements Startable {
private final Map<String, Exchange> cacheMap = Maps.newHashMap();
private Persistit persistit;
private Volume volume;
public Caches(CachesManager caches) {
persistit = caches.persistit();
doStart();
}
@Override
public void start() {
// done in constructor
}
private void doStart() {
try {
persistit.flush();
volume = persistit.createTemporaryVolume();
} catch (Exception e) {
throw new IllegalStateException("Fail to create a cache volume", e);
}
}
public void registerValueCoder(Class<?> clazz, ValueCoder coder) {
CoderManager cm = persistit.getCoderManager();
cm.registerValueCoder(clazz, coder);
}
public <V> Cache<V> createCache(String cacheName) {
Preconditions.checkState(volume != null && volume.isOpened(), "Caches are not initialized");
Preconditions.checkState(!cacheMap.containsKey(cacheName), "Cache is already created: " + cacheName);
try {
Exchange exchange = persistit.getExchange(volume, cacheName, true);
exchange.setMaximumValueSize(Value.MAXIMUM_SIZE);
Cache<V> cache = new Cache<>(cacheName, exchange);
cacheMap.put(cacheName, exchange);
return cache;
} catch (Exception e) {
throw new IllegalStateException("Fail to create cache: " + cacheName, e);
}
}
@Override
public void stop() {
for (Entry<String, Exchange> e : cacheMap.entrySet()) {
persistit.releaseExchange(e.getValue());
}
cacheMap.clear();
if (volume != null) {
try {
volume.close();
volume.delete();
} catch (PersistitException e) {
throw new IllegalStateException("Fail to close caches", e);
}
volume = null;
}
}
}
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