/*
* 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.Collections;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.sshd.common.FactoryManager;
import org.apache.sshd.common.RuntimeSshException;
import org.apache.sshd.common.io.IoHandler;
import org.apache.sshd.common.io.IoService;
import org.apache.sshd.common.io.IoSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*/
public abstract class Nio2Service implements IoService {
protected final Logger logger = LoggerFactory.getLogger(getClass());
protected final FactoryManager manager;
protected final IoHandler handler;
protected final ExecutorService executor;
protected final AsynchronousChannelGroup group;
protected final Map<Long, IoSession> sessions;
protected final AtomicBoolean disposing = new AtomicBoolean();
protected Nio2Service(FactoryManager manager, IoHandler handler) {
logger.debug("Creating {}", getClass().getSimpleName());
try {
this.manager = manager;
this.handler = handler;
executor = Executors.newFixedThreadPool(getNioWorkers());
group = AsynchronousChannelGroup.withThreadPool(executor);
sessions = new ConcurrentHashMap<Long, IoSession>();
} catch (IOException e) {
throw new RuntimeSshException(e);
}
}
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;
}
public void dispose() {
if (disposing.compareAndSet(false, true)) {
logger.debug("Disposing {}", getClass().getSimpleName());
doDispose();
}
}
protected void doDispose() {
for (IoSession session : sessions.values()) {
session.close(true);
}
group.shutdown();
}
public Map<Long, IoSession> getManagedSessions() {
return Collections.unmodifiableMap(sessions);
}
public void sessionClosed(Nio2Session session) {
sessions.remove(session.getId());
}
}