/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.sshd.common.io.nio2;
import java.io.IOException;
import java.nio.channels.AsynchronousChannelGroup;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import org.apache.sshd.common.FactoryManager;
import org.apache.sshd.common.RuntimeSshException;
import org.apache.sshd.common.future.CloseFuture;
import org.apache.sshd.common.io.IoAcceptor;
import org.apache.sshd.common.io.IoConnector;
import org.apache.sshd.common.io.IoHandler;
import org.apache.sshd.common.io.IoServiceFactory;
import org.apache.sshd.common.util.CloseableUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*/
public class Nio2ServiceFactory implements IoServiceFactory {
private final Logger logger = LoggerFactory.getLogger(Nio2ServiceFactory.class);
private final FactoryManager manager;
private final AsynchronousChannelGroup group;
public Nio2ServiceFactory(FactoryManager manager) {
this.manager = manager;
try {
ExecutorService executor = Executors.newFixedThreadPool(getNioWorkers());
((ThreadPoolExecutor) executor).setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
group = AsynchronousChannelGroup.withThreadPool(executor);
} catch (IOException e) {
throw new RuntimeSshException(e);
}
}
public IoConnector createConnector(IoHandler handler) {
return new Nio2Connector(manager, handler, group);
}
public IoAcceptor createAcceptor(IoHandler handler) {
return new Nio2Acceptor(manager, handler, group);
}
public CloseFuture close(boolean immediately) {
try {
group.shutdownNow();
group.awaitTermination(5, TimeUnit.SECONDS);
} catch (Exception e) {
logger.debug("Exception caught while closing channel group", e);
}
return CloseableUtils.closed();
}
public int getNioWorkers() {
String nioWorkers = manager.getProperties().get(FactoryManager.NIO_WORKERS);
if (nioWorkers != null && nioWorkers.length() > 0) {
int nb = Integer.parseInt(nioWorkers);
if (nb > 0) {
return nb;
}
}
return FactoryManager.DEFAULT_NIO_WORKERS;
}
}