/*
* 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.TimeUnit;
import org.apache.sshd.common.FactoryManager;
import org.apache.sshd.common.RuntimeSshException;
import org.apache.sshd.common.io.AbstractIoServiceFactory;
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.util.threads.ThreadUtils;
/**
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public class Nio2ServiceFactory extends AbstractIoServiceFactory {
private final AsynchronousChannelGroup group;
public Nio2ServiceFactory(FactoryManager factoryManager, ExecutorService service, boolean shutdownOnExit) {
super(factoryManager,
service == null ? ThreadUtils.newFixedThreadPool(factoryManager.toString() + "-nio2", getNioWorkers(factoryManager)) : service,
service == null || shutdownOnExit);
try {
group = AsynchronousChannelGroup.withThreadPool(ThreadUtils.protectExecutorServiceShutdown(getExecutorService(), isShutdownOnExit()));
} catch (IOException e) {
log.warn("Failed (" + e.getClass().getSimpleName() + " to start async. channel group: " + e.getMessage());
if (log.isDebugEnabled()) {
log.debug("Start async. channel group failure details", e);
}
throw new RuntimeSshException(e);
}
}
@Override
public IoConnector createConnector(IoHandler handler) {
return new Nio2Connector(getFactoryManager(), handler, group);
}
@Override
public IoAcceptor createAcceptor(IoHandler handler) {
return new Nio2Acceptor(getFactoryManager(), handler, group);
}
@Override
protected void doCloseImmediately() {
try {
if (!group.isShutdown()) {
log.debug("Shutdown group");
group.shutdownNow();
// if we protect the executor then the await will fail since we didn't really shut it down...
if (isShutdownOnExit()) {
if (group.awaitTermination(5, TimeUnit.SECONDS)) {
log.debug("Group successfully shut down");
} else {
log.debug("Not all group tasks terminated");
}
}
}
} catch (Exception e) {
log.debug("Exception caught while closing channel group", e);
} finally {
super.doCloseImmediately();
}
}
}