/*
 * Copyright (C) 2009, Constantine Plotnikov <constantine.plotnikov@gmail.com>
 * Copyright (C) 2008, Google Inc.
 * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.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
 *   notice, this list of conditions and the following disclaimer.
 *
 * - 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.
 *
 * - Neither the name of the Eclipse Foundation, Inc. nor the
 *   names of its contributors may be used to endorse or promote
 *   products derived from this software without specific prior
 *   written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.eclipse.jgit.transport;

import java.io.IOException;
import java.io.InputStream;

import org.eclipse.jgit.errors.NotSupportedException;
import org.eclipse.jgit.errors.TransportException;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.lib.Repository;

Single shot fetch from a streamed Git bundle.

The bundle is read from an unbuffered input stream, which limits the
transport to opening at most one FetchConnection before needing to recreate
the transport instance.
/**
 * Single shot fetch from a streamed Git bundle.
 * <p>
 * The bundle is read from an unbuffered input stream, which limits the
 * transport to opening at most one FetchConnection before needing to recreate
 * the transport instance.
 */
public class TransportBundleStream extends Transport implements TransportBundle {
	private InputStream src;

	
Create a new transport to fetch objects from a streamed bundle.

The stream can be unbuffered (buffering is automatically provided
internally to smooth out short reads) and unpositionable (the stream is
read from only once, sequentially).

When the FetchConnection or the this instance is closed the supplied
input stream is also automatically closed. This frees callers from
needing to keep track of the supplied stream.
Params:
db – 
           repository the fetched objects will be loaded into.
uri – 
           symbolic name of the source of the stream. The URI can
           reference a non-existent resource. It is used only for
           exception reporting.
in – 
           the stream to read the bundle from./**
	 * Create a new transport to fetch objects from a streamed bundle.
	 * <p>
	 * The stream can be unbuffered (buffering is automatically provided
	 * internally to smooth out short reads) and unpositionable (the stream is
	 * read from only once, sequentially).
	 * <p>
	 * When the FetchConnection or the this instance is closed the supplied
	 * input stream is also automatically closed. This frees callers from
	 * needing to keep track of the supplied stream.
	 *
	 * @param db
	 *            repository the fetched objects will be loaded into.
	 * @param uri
	 *            symbolic name of the source of the stream. The URI can
	 *            reference a non-existent resource. It is used only for
	 *            exception reporting.
	 * @param in
	 *            the stream to read the bundle from.
	 */
	public TransportBundleStream(final Repository db, final URIish uri,
			final InputStream in) {
		super(db, uri);
		src = in;
	}

	
{@inheritDoc} /** {@inheritDoc} */
	@Override
	public FetchConnection openFetch() throws TransportException {
		if (src == null)
			throw new TransportException(uri, JGitText.get().onlyOneFetchSupported);
		try {
			return new BundleFetchConnection(this, src);
		} finally {
			src = null;
		}
	}

	
{@inheritDoc} /** {@inheritDoc} */
	@Override
	public PushConnection openPush() throws NotSupportedException {
		throw new NotSupportedException(
				JGitText.get().pushIsNotSupportedForBundleTransport);
	}

	
{@inheritDoc} /** {@inheritDoc} */
	@Override
	public void close() {
		if (src != null) {
			try {
				src.close();
			} catch (IOException err) {
				// Ignore a close error.
			} finally {
				src = null;
			}
		}
	}
}