| /* |
| * 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 java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.Channels; |
| import java.nio.channels.ReadableByteChannel; |
| import java.nio.channels.WritableByteChannel; |
| import java.nio.file.Path; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import javax.servlet.AsyncContext; |
| import javax.servlet.ReadListener; |
| import javax.servlet.ServletInputStream; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.http.HttpStatus; |
| import org.eclipse.jgit.lfs.errors.CorruptLongObjectException; |
| import org.eclipse.jgit.lfs.internal.AtomicObjectOutputStream; |
| import org.eclipse.jgit.lfs.lib.AnyLongObjectId; |
| import org.eclipse.jgit.lfs.lib.Constants; |
| |
| /** |
| * Handle asynchronous object upload. |
| * |
| * @since 4.6 |
| */ |
| public class ObjectUploadListener implements ReadListener { |
| |
| private static Logger LOG = Logger |
| .getLogger(ObjectUploadListener.class.getName()); |
| |
| private final AsyncContext context; |
| |
| private final HttpServletResponse response; |
| |
| private final ServletInputStream in; |
| |
| private final ReadableByteChannel inChannel; |
| |
| private final AtomicObjectOutputStream out; |
| |
| private WritableByteChannel channel; |
| |
| private final ByteBuffer buffer = ByteBuffer.allocateDirect(8192); |
| |
| private final Path path; |
| |
| private long uploaded; |
| |
| private Callback callback; |
| |
| /** |
| * Callback invoked after object upload completed. |
| * |
| * @since 5.1.7 |
| */ |
| public interface Callback { |
| /** |
| * Notified after object upload completed. |
| * |
| * @param path |
| * path to the object on the backend |
| * @param size |
| * uploaded size in bytes |
| */ |
| void uploadCompleted(String path, long size); |
| } |
| |
| /** |
| * Constructor for ObjectUploadListener. |
| * |
| * @param repository |
| * the repository storing large objects |
| * @param context |
| * a {@link javax.servlet.AsyncContext} object. |
| * @param request |
| * a {@link javax.servlet.http.HttpServletRequest} object. |
| * @param response |
| * a {@link javax.servlet.http.HttpServletResponse} object. |
| * @param id |
| * a {@link org.eclipse.jgit.lfs.lib.AnyLongObjectId} object. |
| * @throws java.io.FileNotFoundException |
| * @throws java.io.IOException |
| */ |
| public ObjectUploadListener(FileLfsRepository repository, |
| AsyncContext context, HttpServletRequest request, |
| HttpServletResponse response, AnyLongObjectId id) |
| throws FileNotFoundException, IOException { |
| this.context = context; |
| this.response = response; |
| this.in = request.getInputStream(); |
| this.inChannel = Channels.newChannel(in); |
| this.out = repository.getOutputStream(id); |
| this.channel = Channels.newChannel(out); |
| this.path = repository.getPath(id); |
| this.uploaded = 0L; |
| response.setContentType(Constants.CONTENT_TYPE_GIT_LFS_JSON); |
| } |
| |
| /** |
| * Set the callback to invoke after upload completed. |
| * |
| * @param callback |
| * the callback |
| * @return {@code this}. |
| * @since 5.1.7 |
| */ |
| public ObjectUploadListener setCallback(Callback callback) { |
| this.callback = callback; |
| return this; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * Writes all the received data to the output channel |
| */ |
| @Override |
| public void onDataAvailable() throws IOException { |
| while (in.isReady()) { |
| if (inChannel.read(buffer) > 0) { |
| buffer.flip(); |
| uploaded += Integer.valueOf(channel.write(buffer)).longValue(); |
| buffer.compact(); |
| } else { |
| buffer.flip(); |
| while (buffer.hasRemaining()) { |
| uploaded += Integer.valueOf(channel.write(buffer)) |
| .longValue(); |
| } |
| close(); |
| return; |
| } |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void onAllDataRead() throws IOException { |
| close(); |
| } |
| |
| /** |
| * Close resources held by this listener |
| * |
| * @throws java.io.IOException |
| */ |
| protected void close() throws IOException { |
| try { |
| inChannel.close(); |
| channel.close(); |
| // TODO check if status 200 is ok for PUT request, HTTP foresees 204 |
| // for successful PUT without response body |
| if (!response.isCommitted()) { |
| response.setStatus(HttpServletResponse.SC_OK); |
| } |
| if (callback != null) { |
| callback.uploadCompleted(path.toString(), uploaded); |
| } |
| } finally { |
| context.complete(); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void onError(Throwable e) { |
| try { |
| out.abort(); |
| inChannel.close(); |
| channel.close(); |
| int status; |
| if (e instanceof CorruptLongObjectException) { |
| status = HttpStatus.SC_BAD_REQUEST; |
| LOG.log(Level.WARNING, e.getMessage(), e); |
| } else { |
| status = HttpStatus.SC_INTERNAL_SERVER_ERROR; |
| LOG.log(Level.SEVERE, e.getMessage(), e); |
| } |
| FileLfsServlet.sendError(response, status, e.getMessage()); |
| } catch (IOException ex) { |
| LOG.log(Level.SEVERE, ex.getMessage(), ex); |
| } |
| } |
| } |