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/*******************************************************************************
* Copyright (c) 2000, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ccvs.core.connection;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.team.internal.ccvs.core.ICVSRepositoryLocation;
import org.eclipse.team.internal.ccvs.core.IServerConnection;
import org.eclipse.team.internal.ccvs.core.util.Util;
import org.eclipse.team.internal.core.streams.PollingInputStream;
import org.eclipse.team.internal.core.streams.PollingOutputStream;
import org.eclipse.team.internal.core.streams.TimeoutInputStream;
import org.eclipse.team.internal.core.streams.TimeoutOutputStream;
/**
* Implements a connection method which invokes an external tool to
* establish the connection to the cvs server. Authentication and starting
* of the cvs server are the responsibility of the external connection
* tool.
*/
public class ExtConnection implements IServerConnection {
// cvs format for the repository (e.g. :extssh:user@host:/home/cvs/repo)
private ICVSRepositoryLocation location;
private String password;
// incoming from remote host
InputStream inputStream;
// outgoing to remote host
OutputStream outputStream;
// Process spawn to run the command
Process process;
protected ExtConnection(ICVSRepositoryLocation location, String password) {
this.location = location;
this.password = password;
}
/**
* Closes the connection.
*/
public void close() throws IOException {
try {
if (inputStream != null) inputStream.close();
} finally {
inputStream = null;
try {
if (outputStream != null) outputStream.close();
} finally {
outputStream = null;
if (process != null) process.destroy();
}
}
}
/**
* Returns the <code>InputStream</code> used to read data from the
* server.
*/
public InputStream getInputStream() {
return inputStream;
}
/**
* Returns the <code>OutputStream</code> used to send data to the
* server.
*/
public OutputStream getOutputStream() {
return outputStream;
}
/**
* Opens the connection and invokes cvs in server mode.
*
* @see Connection.open()
*/
public void open(IProgressMonitor monitor) throws IOException {
String[] command = ((CVSRepositoryLocation)location).getExtCommand(password);
boolean connected = false;
try {
process = Util.createProcess(command, monitor);
inputStream = new PollingInputStream(new TimeoutInputStream(process.getInputStream(),
8192 /*bufferSize*/, 1000 /*readTimeout*/, -1 /*closeTimeout*/), location.getTimeout(), monitor);
outputStream = new PollingOutputStream(new TimeoutOutputStream(process.getOutputStream(),
8192 /*buffersize*/, 1000 /*writeTimeout*/, 1000 /*closeTimeout*/), location.getTimeout(), monitor);
// XXX need to do something more useful with stderr
connected = true;
} finally {
if (! connected) {
try {
close();
} finally {
// Ignore any exceptions during close
}
}
}
}
}
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