| /* |
| * Copyright (C) 2017, Markus Duft <markus.duft@ssi-schaefer.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; |
| |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.attribute.BasicFileAttributes; |
| |
| import org.eclipse.jgit.errors.LargeObjectException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| import org.eclipse.jgit.lib.Constants; |
| import org.eclipse.jgit.lib.ObjectLoader; |
| import org.eclipse.jgit.lib.ObjectStream; |
| import org.eclipse.jgit.storage.pack.PackConfig; |
| import org.eclipse.jgit.util.IO; |
| |
| /** |
| * An {@link ObjectLoader} implementation that reads a media file from the LFS |
| * storage. |
| * |
| * @since 4.11 |
| */ |
| public class LfsBlobLoader extends ObjectLoader { |
| |
| private Path mediaFile; |
| |
| private BasicFileAttributes attributes; |
| |
| private byte[] cached; |
| |
| /** |
| * Create a loader for the LFS media file at the given path. |
| * |
| * @param mediaFile |
| * path to the file |
| * @throws IOException |
| * in case of an error reading attributes |
| */ |
| public LfsBlobLoader(Path mediaFile) throws IOException { |
| this.mediaFile = mediaFile; |
| this.attributes = Files.readAttributes(mediaFile, |
| BasicFileAttributes.class); |
| } |
| |
| @Override |
| public int getType() { |
| return Constants.OBJ_BLOB; |
| } |
| |
| @Override |
| public long getSize() { |
| return attributes.size(); |
| } |
| |
| @Override |
| public byte[] getCachedBytes() throws LargeObjectException { |
| if (getSize() > PackConfig.DEFAULT_BIG_FILE_THRESHOLD) { |
| throw new LargeObjectException(); |
| } |
| |
| if (cached == null) { |
| try { |
| cached = IO.readFully(mediaFile.toFile()); |
| } catch (IOException ioe) { |
| throw new LargeObjectException(ioe); |
| } |
| } |
| return cached; |
| } |
| |
| @Override |
| public ObjectStream openStream() |
| throws MissingObjectException, IOException { |
| return new ObjectStream.Filter(getType(), getSize(), |
| Files.newInputStream(mediaFile)); |
| } |
| |
| } |