jgit/org.eclipse.jgit/src/org/eclipse/jgit/transport/RemoteSession.java

/*
 * Copyright (C) 2009, Constantine Plotnikov <constantine.plotnikov@gmail.com>
 * Copyright (C) 2008-2009, Google Inc.
 * Copyright (C) 2009, Google, Inc.
 * Copyright (C) 2009, JetBrains s.r.o.
 * Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
 * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
 * and other copyright owners as documented in the project's IP log.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
 * accompanies this distribution, is reproduced below, and is
 * available at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
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 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
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 *   names of its contributors may be used to endorse or promote
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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package org.eclipse.jgit.transport;

import java.io.IOException;

/**
 * Create a remote "session" for executing remote commands.
 * <p>
 * Clients should subclass RemoteSession to create an alternate way for JGit to
 * execute remote commands. (The client application may already have this
 * functionality available.) Note that this class is just a factory for creating
 * remote processes. If the application already has a persistent connection to
 * the remote machine, RemoteSession may do nothing more than return a new
 * RemoteProcess when exec is called.
 */
public interface RemoteSession {
	/**
	 * Generate a new remote process to execute the given command. This function
	 * should also start execution and may need to create the streams prior to
	 * execution.
	 * @param commandName
	 *            command to execute
	 * @param timeout
	 *            timeout value, in seconds, for command execution
	 * @return a new remote process
	 * @throws IOException
	 *             may be thrown in several cases. For example, on problems
	 *             opening input or output streams or on problems connecting or
	 *             communicating with the remote host. For the latter two cases,
	 *             a TransportException may be thrown (a subclass of
	 *             IOException).
	 */
	public Process exec(String commandName, int timeout) throws IOException;

	/**
	 * Disconnect the remote session
	 */
	public void disconnect();
}