| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.jackrabbit.oak.backup.impl; |
| |
| import static org.apache.jackrabbit.oak.segment.compaction.SegmentGCOptions.defaultGCOptions; |
| import static org.apache.jackrabbit.oak.segment.file.FileStoreBuilder.fileStoreBuilder; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import org.apache.jackrabbit.guava.common.base.Stopwatch; |
| import org.apache.jackrabbit.guava.common.base.Suppliers; |
| import org.apache.jackrabbit.oak.backup.FileStoreRestore; |
| import org.apache.jackrabbit.oak.segment.DefaultSegmentWriter; |
| import org.apache.jackrabbit.oak.segment.ClassicCompactor; |
| import org.apache.jackrabbit.oak.segment.SegmentBufferWriter; |
| import org.apache.jackrabbit.oak.segment.SegmentNodeState; |
| import org.apache.jackrabbit.oak.segment.SegmentWriter; |
| import org.apache.jackrabbit.oak.segment.WriterCacheManager; |
| import org.apache.jackrabbit.oak.segment.compaction.SegmentGCOptions; |
| import org.apache.jackrabbit.oak.segment.file.FileStore; |
| import org.apache.jackrabbit.oak.segment.file.GCNodeWriteMonitor; |
| import org.apache.jackrabbit.oak.segment.file.InvalidFileStoreVersionException; |
| import org.apache.jackrabbit.oak.segment.file.ReadOnlyFileStore; |
| import org.apache.jackrabbit.oak.segment.file.cancel.Canceller; |
| import org.apache.jackrabbit.oak.segment.file.tar.GCGeneration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class FileStoreRestoreImpl implements FileStoreRestore { |
| |
| private static final Logger log = LoggerFactory.getLogger(FileStoreRestoreImpl.class); |
| |
| private static final String JOURNAL_FILE_NAME = "journal.log"; |
| |
| @Override |
| public void restore(File source, File destination) throws IOException, InvalidFileStoreVersionException { |
| if (!validFileStore(source)) { |
| throw new IOException("Folder " + source + " is not a valid FileStore directory"); |
| } |
| |
| ReadOnlyFileStore restore = fileStoreBuilder(source).buildReadOnly(); |
| Stopwatch watch = Stopwatch.createStarted(); |
| |
| FileStore store = fileStoreBuilder(destination) |
| .withStrictVersionCheck(true) |
| .build(); |
| SegmentNodeState current = store.getHead(); |
| |
| try { |
| SegmentNodeState head = restore.getHead(); |
| GCGeneration gen = head.getRecordId().getSegmentId().getGcGeneration(); |
| SegmentBufferWriter bufferWriter = new SegmentBufferWriter( |
| store.getSegmentIdProvider(), |
| store.getReader(), |
| "r", |
| gen |
| ); |
| SegmentWriter writer = new DefaultSegmentWriter( |
| store, |
| store.getReader(), |
| store.getSegmentIdProvider(), |
| store.getBlobStore(), |
| new WriterCacheManager.Default(), |
| bufferWriter, |
| store.getBinariesInlineThreshold() |
| ); |
| SegmentGCOptions gcOptions = defaultGCOptions().setOffline(); |
| ClassicCompactor compactor = new ClassicCompactor( |
| store.getReader(), |
| writer, |
| store.getBlobStore(), |
| GCNodeWriteMonitor.EMPTY |
| ); |
| SegmentNodeState after = compactor.compact(current, head, current, Canceller.newCanceller()); |
| writer.flush(); |
| store.getRevisions().setHead(current.getRecordId(), after.getRecordId()); |
| } finally { |
| restore.close(); |
| store.close(); |
| } |
| |
| watch.stop(); |
| log.info("Restore finished in {}.", watch); |
| } |
| |
| @Override |
| public void restore(File source) { |
| log.warn("Restore not available as an online operation."); |
| } |
| |
| private static boolean validFileStore(File source) { |
| if (source == null || !source.isDirectory()) { |
| return false; |
| } |
| |
| String[] children = source.list(); |
| |
| if (children == null) { |
| return false; |
| } |
| |
| for (String f : children) { |
| if (JOURNAL_FILE_NAME.equals(f)) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| } |