| /* |
| * 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.segment.split; |
| |
| import org.apache.jackrabbit.oak.segment.spi.monitor.FileStoreMonitor; |
| import org.apache.jackrabbit.oak.segment.spi.monitor.FileStoreMonitorAdapter; |
| import org.apache.jackrabbit.oak.segment.spi.monitor.IOMonitor; |
| import org.apache.jackrabbit.oak.segment.spi.monitor.IOMonitorAdapter; |
| import org.apache.jackrabbit.oak.segment.spi.persistence.GCJournalFile; |
| import org.apache.jackrabbit.oak.segment.spi.persistence.JournalFile; |
| import org.apache.jackrabbit.oak.segment.spi.persistence.JournalFileReader; |
| import org.apache.jackrabbit.oak.segment.spi.persistence.JournalFileWriter; |
| import org.apache.jackrabbit.oak.segment.spi.persistence.ManifestFile; |
| import org.apache.jackrabbit.oak.segment.spi.persistence.RepositoryLock; |
| import org.apache.jackrabbit.oak.segment.spi.persistence.SegmentArchiveManager; |
| import org.apache.jackrabbit.oak.segment.spi.persistence.SegmentNodeStorePersistence; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.Properties; |
| |
| public class SplitPersistence implements SegmentNodeStorePersistence { |
| |
| private final SegmentNodeStorePersistence roPersistence; |
| |
| private final SegmentNodeStorePersistence rwPersistence; |
| |
| private final Optional<String> lastRoArchive; |
| |
| public SplitPersistence(SegmentNodeStorePersistence roPersistence, SegmentNodeStorePersistence rwPersistence) throws IOException { |
| this.roPersistence = roPersistence; |
| this.rwPersistence = rwPersistence; |
| |
| ManifestFile manifest = rwPersistence.getManifestFile(); |
| if (!manifest.exists()) { |
| initialize(); |
| } |
| Properties properties = manifest.load(); |
| lastRoArchive = Optional.ofNullable(properties.getProperty("split.lastRoArchive")); |
| } |
| |
| private void initialize() throws IOException { |
| Properties properties = roPersistence.getManifestFile().load(); |
| properties.setProperty("split.initialized", "true"); |
| Optional<String> lastArchive = getLastArchive(); |
| lastArchive.ifPresent(a -> properties.setProperty("split.lastRoArchive", a)); |
| rwPersistence.getManifestFile().save(properties); |
| |
| GCJournalFile gcJournalFile = rwPersistence.getGCJournalFile(); |
| for (String line : roPersistence.getGCJournalFile().readLines()) { |
| gcJournalFile.writeLine(line); |
| } |
| |
| List<String> journalLines = new ArrayList<>(); |
| try (JournalFileReader journalFileReader = roPersistence.getJournalFile().openJournalReader()) { |
| String journalLine; |
| while ((journalLine = journalFileReader.readLine()) != null) { |
| journalLines.add(journalLine); |
| } |
| } |
| |
| Collections.reverse(journalLines); |
| |
| try (JournalFileWriter journalFileWriter = rwPersistence.getJournalFile().openJournalWriter()) { |
| for (String line : journalLines) { |
| journalFileWriter.writeLine(line); |
| } |
| } |
| } |
| |
| private Optional<String> getLastArchive() throws IOException { |
| SegmentArchiveManager manager = roPersistence.createArchiveManager(false, new IOMonitorAdapter(), new FileStoreMonitorAdapter()); |
| List<String> archives = manager.listArchives(); |
| if (archives.isEmpty()) { |
| return Optional.empty(); |
| } else { |
| Collections.sort(archives); |
| return Optional.of(archives.get(archives.size() - 1)); |
| } |
| } |
| |
| @Override |
| public SegmentArchiveManager createArchiveManager(boolean memoryMapping, IOMonitor ioMonitor, FileStoreMonitor fileStoreMonitor) throws IOException { |
| if (lastRoArchive.isPresent()) { |
| return new SplitSegmentArchiveManager( |
| roPersistence.createArchiveManager(memoryMapping, ioMonitor, fileStoreMonitor), |
| rwPersistence.createArchiveManager(memoryMapping, ioMonitor, fileStoreMonitor), |
| lastRoArchive.get()); |
| } else { |
| return rwPersistence.createArchiveManager(memoryMapping, ioMonitor, fileStoreMonitor); |
| } |
| } |
| |
| @Override |
| public boolean segmentFilesExist() { |
| return lastRoArchive.isPresent() || rwPersistence.segmentFilesExist(); |
| } |
| |
| @Override |
| public JournalFile getJournalFile() { |
| return rwPersistence.getJournalFile(); |
| } |
| |
| @Override |
| public GCJournalFile getGCJournalFile() throws IOException { |
| return rwPersistence.getGCJournalFile(); |
| } |
| |
| @Override |
| public ManifestFile getManifestFile() throws IOException { |
| return rwPersistence.getManifestFile(); |
| } |
| |
| @Override |
| public RepositoryLock lockRepository() throws IOException { |
| return rwPersistence.lockRepository(); |
| } |
| |
| } |