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package org.openslx.taskmanager.tasks;
import java.net.Socket;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import org.openslx.taskmanager.api.AbstractTask;
import com.google.gson.annotations.Expose;
public class DispatchRelay extends AbstractTask {
private Output status;
@Expose
public String[] hosts;
@Expose
public int[] ports;
@Expose
public String[] descs;
@Override
protected boolean execute()
{
Socket[] sockets;
Thread[] relayThreads;
try {
sockets = createSockets();
status.addMessage( "Sockets connected." );
} catch ( IOException iox ) {
status.addMessage( "Failed to connect sockets. " + iox.getMessage() );
return false;
}
try {
relayThreads = createRelayThreads( sockets );
status.addMessage( "Relays created." );
} catch ( IOException iox ) {
status.addMessage( "Failed to create relays. " + iox.getMessage() );
return false;
}
for ( Thread t : relayThreads )
t.start();
try {
for ( Thread t : relayThreads )
t.join();
} catch ( InterruptedException inx ) {} finally {
try {
for ( Socket s : sockets ) {
if ( !s.isClosed() )
s.close();
}
status.addMessage( "Sockets closed properly." );
} catch ( IOException iox ) {
status.addMessage( "Failed to close Sockets. " + iox.getMessage() );
}
}
return true;
}
@Override
protected boolean initTask()
{
this.setStatusObject( status );
System.out.println("Something happened.");
if ( hosts.length != 2 || ports.length != 2 ) {
status.addMessage( "Invalid host/port list." );
return false;
}
return true;
}
protected Thread[] createRelayThreads ( Socket[] sockets) throws IOException
{
Thread[] t = new Thread[2];
Socket[][] s = {sockets, {sockets[1], sockets[0]}};
for ( int i = 0; i < 2; i++ ) {
t[i] = new Thread( new Relay( s[i], status, descs[i] ));
}
return t;
}
protected Socket[] createSockets () throws IOException
{
Socket[] s = new Socket[2];
for ( int i = 0; i < 2; i++ ) {
s[i] = new Socket();
s[i].connect( new InetSocketAddress( hosts[i], ports[i] ), 1200 );
}
return s;
}
public static class Output
{
protected String messages = null;
public void addMessage( String str )
{
if ( messages == null )
{
messages = str;
} else {
messages += "\n" + str;
}
}
}
private class Relay implements Runnable {
private InputStream in;
private OutputStream out;
private Output status;
public final String desc;
private byte[] buffer = new byte[16384];
public Relay ( Socket[] s, Output status, String desc ) throws IOException
{
in = s[0].getInputStream();
out = s[1].getOutputStream();
this.status = status;
this.desc = desc;
}
private void relay() throws IOException, InterruptedException
{
int readBytes = in.read( buffer );
out.write( buffer, 0, readBytes );
}
public void close()
{
try {
if ( this.in != null )
this.in.close();
if ( this.out != null )
this.out.close();
this.status.addMessage( desc + ": input/output streams closed properly." );
} catch ( IOException iox ) {
this.status.addMessage( desc + ": failed to close input/ouput streams. " + iox.getMessage() );
}
}
@Override
public void run()
{
while ( true ) {
try {
relay();
this.status.addMessage( desc + ": relay operating." );
} catch ( Exception x ) {
this.status.addMessage( desc + ": close relay. " + x.getMessage() );
this.close();
}
}
}
}
}
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