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- /*
- * Copyright (C) 2015, Matthias Sohn <matthias.sohn@sap.com>
- * 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.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;
- }
- }
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