| /* |
| * 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.file.FileStoreBuilder.fileStoreBuilder; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import com.google.common.base.Stopwatch; |
| import org.apache.jackrabbit.oak.backup.FileStoreBackup; |
| import org.apache.jackrabbit.oak.segment.Compactor; |
| import org.apache.jackrabbit.oak.segment.DefaultSegmentWriter; |
| import org.apache.jackrabbit.oak.segment.Revisions; |
| import org.apache.jackrabbit.oak.segment.SegmentBufferWriter; |
| import org.apache.jackrabbit.oak.segment.SegmentNodeState; |
| import org.apache.jackrabbit.oak.segment.SegmentReader; |
| 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.FileStoreBuilder; |
| import org.apache.jackrabbit.oak.segment.file.GCNodeWriteMonitor; |
| import org.apache.jackrabbit.oak.segment.file.InvalidFileStoreVersionException; |
| import org.apache.jackrabbit.oak.segment.file.cancel.Canceller; |
| import org.apache.jackrabbit.oak.segment.file.tar.GCGeneration; |
| import org.apache.jackrabbit.oak.segment.file.tooling.BasicReadOnlyBlobStore; |
| import org.jetbrains.annotations.NotNull; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class FileStoreBackupImpl implements FileStoreBackup { |
| |
| private static final Logger log = LoggerFactory.getLogger(FileStoreBackupImpl.class); |
| |
| public static final boolean USE_FAKE_BLOBSTORE = Boolean.getBoolean("oak.backup.UseFakeBlobStore"); |
| |
| @Override |
| public void backup(@NotNull SegmentReader reader, @NotNull Revisions revisions, @NotNull File destination) throws IOException, InvalidFileStoreVersionException { |
| Stopwatch watch = Stopwatch.createStarted(); |
| SegmentGCOptions gcOptions = SegmentGCOptions.defaultGCOptions().setOffline(); |
| |
| FileStoreBuilder builder = fileStoreBuilder(destination) |
| .withStrictVersionCheck(true) |
| .withDefaultMemoryMapping(); |
| |
| if (USE_FAKE_BLOBSTORE) { |
| builder.withBlobStore(new BasicReadOnlyBlobStore()); |
| } |
| |
| builder.withGCOptions(gcOptions); |
| FileStore backup = builder.build(); |
| SegmentNodeState current = reader.readHeadState(revisions); |
| |
| try { |
| GCGeneration gen = current.getRecordId().getSegmentId().getGcGeneration(); |
| SegmentBufferWriter bufferWriter = new SegmentBufferWriter( |
| backup.getSegmentIdProvider(), |
| backup.getReader(), |
| "b", |
| gen |
| ); |
| SegmentWriter writer = new DefaultSegmentWriter( |
| backup, |
| backup.getReader(), |
| backup.getSegmentIdProvider(), |
| backup.getBlobStore(), |
| new WriterCacheManager.Default(), |
| bufferWriter |
| ); |
| Compactor compactor = new Compactor( |
| backup.getReader(), |
| writer, |
| backup.getBlobStore(), |
| GCNodeWriteMonitor.EMPTY |
| ); |
| SegmentNodeState head = backup.getHead(); |
| SegmentNodeState after = compactor.compact(head, current, head, Canceller.newCanceller()); |
| writer.flush(); |
| |
| if (after != null) { |
| backup.getRevisions().setHead(head.getRecordId(), after.getRecordId()); |
| } |
| } finally { |
| backup.close(); |
| } |
| |
| backup = fileStoreBuilder(destination) |
| .withDefaultMemoryMapping() |
| .withGCOptions(gcOptions) |
| .withStrictVersionCheck(true) |
| .build(); |
| |
| try { |
| cleanup(backup); |
| } finally { |
| backup.close(); |
| } |
| |
| watch.stop(); |
| log.info("Backup finished in {}.", watch); |
| } |
| |
| @Override |
| public boolean cleanup(FileStore f) throws IOException { |
| f.cleanup(); |
| return true; |
| } |
| |
| } |