| /* |
| * 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; |
| |
| 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 com.google.common.base.Stopwatch; |
| import com.google.common.base.Suppliers; |
| import org.apache.jackrabbit.oak.segment.Compactor; |
| 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.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class FileStoreRestore { |
| |
| private static final Logger log = LoggerFactory |
| .getLogger(FileStoreRestore.class); |
| |
| static int MAX_FILE_SIZE = 256; |
| |
| private static final String JOURNAL_FILE_NAME = "journal.log"; |
| |
| public static void restore(File source, File destination) |
| throws IOException { |
| if (!validFileStore(source)) { |
| throw new IOException("Folder " + source |
| + " is not a valid FileStore directory"); |
| } |
| |
| FileStore restore = fileStoreBuilder(source).buildReadOnly(); |
| Stopwatch watch = Stopwatch.createStarted(); |
| |
| FileStore store = fileStoreBuilder(destination).build(); |
| SegmentNodeState current = store.getHead(); |
| try { |
| SegmentNodeState head = restore.getHead(); |
| int gen = head.getRecordId().getSegment().getGcGeneration(); |
| SegmentBufferWriter bufferWriter = new SegmentBufferWriter( |
| store, |
| store.getTracker(), |
| store.getReader(), |
| "r", |
| gen |
| ); |
| SegmentWriter writer = new SegmentWriter( |
| store, |
| store.getReader(), |
| store.getBlobStore(), |
| new WriterCacheManager.Default(), |
| bufferWriter, |
| store.getBinaryReferenceConsumer() |
| ); |
| SegmentGCOptions gcOptions = defaultGCOptions().setOffline(); |
| Compactor compactor = new Compactor(store.getReader(), writer, |
| store.getBlobStore(), Suppliers.ofInstance(false), |
| gcOptions); |
| compactor.setContentEqualityCheck(true); |
| SegmentNodeState after = compactor.compact(current, head, current); |
| store.getRevisions().setHead(current.getRecordId(), |
| after.getRecordId()); |
| } finally { |
| restore.close(); |
| store.close(); |
| } |
| watch.stop(); |
| log.info("Restore finished in {}.", watch); |
| } |
| |
| public static 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; |
| } |
| for (String f : source.list()) { |
| if (JOURNAL_FILE_NAME.equals(f)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |