| /* |
| * Copyright (C) 2015, Matthias Sohn <matthias.sohn@sap.com> and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| package org.eclipse.jgit.lfs.server.fs; |
| |
| import static org.eclipse.jgit.util.HttpSupport.HDR_AUTHORIZATION; |
| |
| import java.io.IOException; |
| import java.nio.channels.FileChannel; |
| import java.nio.channels.ReadableByteChannel; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.StandardOpenOption; |
| import java.util.Collections; |
| |
| import org.eclipse.jgit.annotations.Nullable; |
| import org.eclipse.jgit.lfs.internal.AtomicObjectOutputStream; |
| import org.eclipse.jgit.lfs.lib.AnyLongObjectId; |
| import org.eclipse.jgit.lfs.lib.Constants; |
| import org.eclipse.jgit.lfs.server.LargeFileRepository; |
| import org.eclipse.jgit.lfs.server.Response; |
| import org.eclipse.jgit.lfs.server.Response.Action; |
| |
| /** |
| * Repository storing large objects in the file system |
| * |
| * @since 4.3 |
| */ |
| public class FileLfsRepository implements LargeFileRepository { |
| |
| private String url; |
| private final Path dir; |
| |
| /** |
| * <p>Constructor for FileLfsRepository.</p> |
| * |
| * @param url |
| * external URL of this repository |
| * @param dir |
| * storage directory |
| * @throws java.io.IOException |
| */ |
| public FileLfsRepository(String url, Path dir) throws IOException { |
| this.url = url; |
| this.dir = dir; |
| Files.createDirectories(dir); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public Response.Action getDownloadAction(AnyLongObjectId id) { |
| return getAction(id); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public Action getUploadAction(AnyLongObjectId id, long size) { |
| return getAction(id); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| @Nullable |
| public Action getVerifyAction(AnyLongObjectId id) { |
| return null; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public long getSize(AnyLongObjectId id) throws IOException { |
| Path p = getPath(id); |
| if (Files.exists(p)) { |
| return Files.size(p); |
| } |
| return -1; |
| } |
| |
| /** |
| * Get the storage directory |
| * |
| * @return the path of the storage directory |
| */ |
| public Path getDir() { |
| return dir; |
| } |
| |
| /** |
| * Get the path where the given object is stored |
| * |
| * @param id |
| * id of a large object |
| * @return path the object's storage path |
| */ |
| protected Path getPath(AnyLongObjectId id) { |
| StringBuilder s = new StringBuilder( |
| Constants.LONG_OBJECT_ID_STRING_LENGTH + 6); |
| s.append(toHexCharArray(id.getFirstByte())).append('/'); |
| s.append(toHexCharArray(id.getSecondByte())).append('/'); |
| s.append(id.name()); |
| return dir.resolve(s.toString()); |
| } |
| |
| private Response.Action getAction(AnyLongObjectId id) { |
| Response.Action a = new Response.Action(); |
| a.href = url + id.getName(); |
| a.header = Collections.singletonMap(HDR_AUTHORIZATION, "not:required"); //$NON-NLS-1$ |
| return a; |
| } |
| |
| ReadableByteChannel getReadChannel(AnyLongObjectId id) |
| throws IOException { |
| return FileChannel.open(getPath(id), StandardOpenOption.READ); |
| } |
| |
| AtomicObjectOutputStream getOutputStream(AnyLongObjectId id) |
| throws IOException { |
| Path path = getPath(id); |
| Path parent = path.getParent(); |
| if (parent != null) { |
| Files.createDirectories(parent); |
| } |
| return new AtomicObjectOutputStream(path, id); |
| } |
| |
| private static char[] toHexCharArray(int b) { |
| final char[] dst = new char[2]; |
| formatHexChar(dst, 0, b); |
| return dst; |
| } |
| |
| private static final char[] hexchar = { '0', '1', '2', '3', '4', '5', '6', |
| '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; |
| |
| private static void formatHexChar(char[] dst, int p, int b) { |
| int o = p + 1; |
| while (o >= p && b != 0) { |
| dst[o--] = hexchar[b & 0xf]; |
| b >>>= 4; |
| } |
| while (o >= p) |
| dst[o--] = '0'; |
| } |
| |
| /** |
| * @return the url of the content server |
| * @since 4.11 |
| */ |
| public String getUrl() { |
| return url; |
| } |
| |
| /** |
| * @param url |
| * the url of the content server |
| * @since 4.11 |
| */ |
| public void setUrl(String url) { |
| this.url = url; |
| } |
| } |