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/**
* The MIT License
*
* Copyright (c) 2010-2011 Sonatype, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.hudsonci.maven.eventspy.common;
import hudson.remoting.Channel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.Closeable;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
// TODO: Move to common, once common is small/util classes that can be put into the slavebundle
/**
* Starts a remoting channel over TCP/IP.
*
* @author Jason Dillon
* @since 2.1.0
*/
public class RemotingClient
implements Closeable
{
private static final Logger log = LoggerFactory.getLogger(RemotingClient.class);
private final ExecutorService executor = Executors.newCachedThreadPool();
private final int port;
private Channel channel;
public RemotingClient(final int port) {
this.port = port;
}
public Channel getChannel() {
ensureOpened();
return channel;
}
public boolean isOpen() {
return channel != null;
}
private void ensureOpened() {
if (!isOpen()) {
throw new IllegalStateException();
}
}
public void open() throws IOException, InterruptedException {
if (isOpen()) {
throw new IllegalStateException();
}
log.debug("Opening w/port: {}", port);
final Socket socket = new Socket((String)null, port);
InputStream input = new BufferedInputStream(new FilterInputStream(socket.getInputStream())
{
public void close() throws IOException {
socket.shutdownInput();
}
});
OutputStream output = new BufferedOutputStream(new FilterOutputStream(socket.getOutputStream())
{
public void close() throws IOException {
socket.shutdownOutput();
}
});
channel = new Channel(getClass().getName(), executor, Channel.Mode.BINARY, input, output);
log.debug("Opened");
}
public void join() throws InterruptedException {
log.debug("Joining");
getChannel().join();
log.debug("Joined");
}
public void close() throws IOException {
if (channel != null) {
log.debug("Closing");
channel.close();
channel = null;
log.debug("Closed");
}
}
@Override
public String toString() {
return "RemotingClient{" +
"port=" + port +
", channel=" + channel +
'}';
}
/**
* Copied from hudson's maven-agent, apparently the std impl causes problems?
*/
private static class FilterOutputStream
extends java.io.FilterOutputStream
{
public FilterOutputStream(final OutputStream out) {
super(out);
}
public void write(final byte[] b) throws IOException {
out.write(b);
}
public void write(final byte[] b, final int off, final int len) throws IOException {
out.write(b, off, len);
}
public void close() throws IOException {
out.close();
}
}
/**
* Command-line access.
*/
public static void main(final String[] args) throws Exception {
assert args != null;
assert args.length == 1;
int port = Integer.parseInt(args[0]);
RemotingClient client = new RemotingClient(port);
client.open();
client.join();
client.close();
System.exit(0);
}
}
