/*
* Druid - a distributed column store.
* Copyright (C) 2012, 2013 Metamarkets Group Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU 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 io.druid.curator;
import com.google.inject.Binder;
import com.google.inject.Module;
import com.google.inject.Provides;
import com.metamx.common.lifecycle.Lifecycle;
import com.metamx.common.logger.Logger;
import io.druid.guice.ConfigProvider;
import io.druid.guice.LazySingleton;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.BoundedExponentialBackoffRetry;
import java.io.IOException;
/**
*/
public class CuratorModule implements Module
{
private static final Logger log = new Logger(CuratorModule.class);
@Override
public void configure(Binder binder)
{
ConfigProvider.bind(binder, CuratorConfig.class);
}
@Provides @LazySingleton
public CuratorFramework makeCurator(CuratorConfig config, Lifecycle lifecycle) throws IOException
{
final CuratorFramework framework =
CuratorFrameworkFactory.builder()
.connectString(config.getZkHosts())
.sessionTimeoutMs(config.getZkSessionTimeoutMs())
.retryPolicy(new BoundedExponentialBackoffRetry(1000, 45000, 30))
.compressionProvider(new PotentiallyGzippedCompressionProvider(config.enableCompression()))
.build();
lifecycle.addHandler(
new Lifecycle.Handler()
{
@Override
public void start() throws Exception
{
log.info("Starting Curator");
framework.start();
}
@Override
public void stop()
{
log.info("Stopping Curator");
framework.close();
}
}
);
return framework;
}
}