/**
* Copyright 2013-2015 Seagate Technology LLC.
*
* This Source Code Form is subject to the terms of the Mozilla
* Public License, v. 2.0. If a copy of the MPL was not
* distributed with this file, You can obtain one at
* https://mozilla.org/MP:/2.0/.
*
* This program is distributed in the hope that it will be useful,
* but is provided AS-IS, WITHOUT ANY WARRANTY; including without
* the implied warranty of MERCHANTABILITY, NON-INFRINGEMENT or
* FITNESS FOR A PARTICULAR PURPOSE. See the Mozilla Public
* License for more details.
*
* See www.openkinetic.org for more project information
*/
package com.seagate.kinetic.simulator.io.provider.nio;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import java.util.logging.Level;
import java.util.logging.Logger;
import kinetic.simulator.SimulatorConfiguration;
/**
*
* Nio Event Loop Group management class.
*
*
* @author chiaming
*
*/
public class NioEventLoopGroupManager {
public final Logger logger = Logger
.getLogger(NioEventLoopGroupManager.class.getName());
// service config
private final SimulatorConfiguration config;
private EventLoopGroup bossGroup = null;
private EventLoopGroup workerGroup = null;
private boolean isClosed = false;
// threads for boss
private NioThreadFactory bossTreadFactory = null;
// threads for workers
private NioThreadFactory workerThreadFactory = null;
public NioEventLoopGroupManager(SimulatorConfiguration config) {
// simulator config
this.config = config;
// boss threads
int nBossThreads = config.getNioServiceBossThreads();
// worker threads
int nWorkerThreads = config.getNioServiceWorkerThreads();
// boss thread factory
this.bossTreadFactory = new NioThreadFactory("Simulator-nio-boss", true);
// worker thread factory
this.workerThreadFactory = new NioThreadFactory("Simulator-nio-worker",
true);
logger.info("Nio event loop threads = " + nBossThreads);
// construct boss group
bossGroup = new NioEventLoopGroup(nBossThreads, bossTreadFactory);
// construct worker group
workerGroup = new NioEventLoopGroup(nWorkerThreads, workerThreadFactory);
}
/**
* Get boss group
*
* @return boss group
*/
public EventLoopGroup getBossGroup() {
if (this.isClosed) {
throw new java.lang.IllegalStateException(
"nio event loop is closed");
}
return this.bossGroup;
}
/**
* Get worker group.
*
* @return worker group.
*
*/
public EventLoopGroup getWorkerGroup() {
if (this.isClosed) {
throw new java.lang.IllegalStateException(
"nio event loop is closed");
}
return this.workerGroup;
}
/**
* Close boss and worker groups. This shuts down the Nio Services.
*
*/
public synchronized void close() {
if (this.isClosed) {
return;
}
try {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
long awaitTimeout = this.config.getThreadPoolAwaitTimeout();
bossGroup.terminationFuture().await(awaitTimeout);
workerGroup.terminationFuture().await(awaitTimeout);
} catch (Exception e) {
logger.log(Level.WARNING, e.getMessage(), e);
}
this.isClosed = true;
logger.info("NioEventLoopGroupManager nio service closed ...");
}
}