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199 lines
5.6 KiB
199 lines
5.6 KiB
/* |
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* Copyright (C) 2015, Matthias Sohn <matthias.sohn@sap.com> |
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* and other copyright owners as documented in the project's IP log. |
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* |
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* This program and the accompanying materials are made available |
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* under the terms of the Eclipse Distribution License v1.0 which |
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* accompanies this distribution, is reproduced below, and is |
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* available at http://www.eclipse.org/org/documents/edl-v10.php |
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* |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials provided |
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* with the distribution. |
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* |
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* - Neither the name of the Eclipse Foundation, Inc. nor the |
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* names of its contributors may be used to endorse or promote |
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* products derived from this software without specific prior |
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* written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package org.eclipse.jgit.lfs.server.fs; |
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import static org.eclipse.jgit.util.HttpSupport.HDR_AUTHORIZATION; |
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import java.io.IOException; |
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import java.nio.channels.FileChannel; |
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import java.nio.channels.ReadableByteChannel; |
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import java.nio.file.Files; |
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import java.nio.file.Path; |
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import java.nio.file.StandardOpenOption; |
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import java.util.Collections; |
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import org.eclipse.jgit.annotations.Nullable; |
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import org.eclipse.jgit.lfs.internal.AtomicObjectOutputStream; |
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import org.eclipse.jgit.lfs.lib.AnyLongObjectId; |
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import org.eclipse.jgit.lfs.lib.Constants; |
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import org.eclipse.jgit.lfs.server.LargeFileRepository; |
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import org.eclipse.jgit.lfs.server.Response; |
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import org.eclipse.jgit.lfs.server.Response.Action; |
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/** |
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* Repository storing large objects in the file system |
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* |
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* @since 4.3 |
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*/ |
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public class FileLfsRepository implements LargeFileRepository { |
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private String url; |
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private final Path dir; |
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/** |
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* <p>Constructor for FileLfsRepository.</p> |
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* |
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* @param url |
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* external URL of this repository |
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* @param dir |
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* storage directory |
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* @throws java.io.IOException |
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*/ |
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public FileLfsRepository(String url, Path dir) throws IOException { |
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this.url = url; |
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this.dir = dir; |
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Files.createDirectories(dir); |
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} |
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/** {@inheritDoc} */ |
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@Override |
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public Response.Action getDownloadAction(AnyLongObjectId id) { |
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return getAction(id); |
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} |
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/** {@inheritDoc} */ |
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@Override |
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public Action getUploadAction(AnyLongObjectId id, long size) { |
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return getAction(id); |
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} |
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/** {@inheritDoc} */ |
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@Override |
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@Nullable |
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public Action getVerifyAction(AnyLongObjectId id) { |
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return null; |
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} |
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/** {@inheritDoc} */ |
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@Override |
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public long getSize(AnyLongObjectId id) throws IOException { |
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Path p = getPath(id); |
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if (Files.exists(p)) { |
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return Files.size(p); |
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} |
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return -1; |
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} |
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/** |
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* Get the storage directory |
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* |
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* @return the path of the storage directory |
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*/ |
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public Path getDir() { |
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return dir; |
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} |
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/** |
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* Get the path where the given object is stored |
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* |
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* @param id |
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* id of a large object |
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* @return path the object's storage path |
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*/ |
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protected Path getPath(AnyLongObjectId id) { |
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StringBuilder s = new StringBuilder( |
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Constants.LONG_OBJECT_ID_STRING_LENGTH + 6); |
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s.append(toHexCharArray(id.getFirstByte())).append('/'); |
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s.append(toHexCharArray(id.getSecondByte())).append('/'); |
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s.append(id.name()); |
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return dir.resolve(s.toString()); |
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} |
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private Response.Action getAction(AnyLongObjectId id) { |
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Response.Action a = new Response.Action(); |
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a.href = url + id.getName(); |
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a.header = Collections.singletonMap(HDR_AUTHORIZATION, "not:required"); //$NON-NLS-1$ |
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return a; |
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} |
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ReadableByteChannel getReadChannel(AnyLongObjectId id) |
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throws IOException { |
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return FileChannel.open(getPath(id), StandardOpenOption.READ); |
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} |
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AtomicObjectOutputStream getOutputStream(AnyLongObjectId id) |
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throws IOException { |
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Path path = getPath(id); |
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Path parent = path.getParent(); |
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if (parent != null) { |
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Files.createDirectories(parent); |
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} |
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return new AtomicObjectOutputStream(path, id); |
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} |
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private static char[] toHexCharArray(int b) { |
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final char[] dst = new char[2]; |
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formatHexChar(dst, 0, b); |
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return dst; |
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} |
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private static final char[] hexchar = { '0', '1', '2', '3', '4', '5', '6', |
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'7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; |
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private static void formatHexChar(char[] dst, int p, int b) { |
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int o = p + 1; |
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while (o >= p && b != 0) { |
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dst[o--] = hexchar[b & 0xf]; |
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b >>>= 4; |
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} |
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while (o >= p) |
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dst[o--] = '0'; |
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} |
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/** |
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* @return the url of the content server |
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* @since 4.11 |
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*/ |
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public String getUrl() { |
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return url; |
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} |
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/** |
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* @param url |
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* the url of the content server |
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* @since 4.11 |
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*/ |
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public void setUrl(String url) { |
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this.url = url; |
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} |
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}
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