| /* |
| * 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.file; |
| |
| import static org.apache.jackrabbit.oak.segment.compaction.SegmentGCStatus.CLEANUP; |
| import static org.apache.jackrabbit.oak.segment.file.PrintableBytes.newPrintableBytes; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.jackrabbit.guava.common.base.Joiner; |
| import org.apache.jackrabbit.guava.common.base.Predicate; |
| import org.apache.jackrabbit.oak.segment.file.tar.CleanupContext; |
| import org.apache.jackrabbit.oak.segment.file.tar.GCGeneration; |
| import org.apache.jackrabbit.oak.segment.file.tar.TarFiles; |
| import org.jetbrains.annotations.NotNull; |
| |
| class DefaultCleanupStrategy implements CleanupStrategy { |
| |
| @Override |
| public List<String> cleanup(Context context) throws IOException { |
| PrintableStopwatch watch = PrintableStopwatch.createStarted(); |
| |
| context.getGCListener().info("cleanup started using reclaimer {}", context.getReclaimer()); |
| context.getGCListener().updateStatus(CLEANUP.message()); |
| context.getSegmentCache().clear(); |
| |
| // Suggest to the JVM that now would be a good time |
| // to clear stale weak references in the SegmentTracker |
| System.gc(); |
| |
| TarFiles.CleanupResult cleanupResult = context.getTarFiles().cleanup(newCleanupContext(context)); |
| if (cleanupResult.isInterrupted()) { |
| context.getGCListener().info("cleanup interrupted"); |
| } |
| context.getSegmentTracker().clearSegmentIdTables(cleanupResult.getReclaimedSegmentIds(), context.getSegmentEvictionReason()); |
| context.getGCListener().info("cleanup marking files for deletion: {}", toFileNames(cleanupResult.getRemovableFiles())); |
| |
| long finalSize = size(context); |
| long reclaimedSize = cleanupResult.getReclaimedSize(); |
| context.getFileStoreStats().reclaimed(reclaimedSize); |
| |
| GCJournal gcJournal = context.getGCJournal(); |
| if (gcJournal != null) { |
| gcJournal.persist( |
| reclaimedSize, |
| finalSize, |
| getGcGeneration(context), |
| context.getCompactionMonitor().getCompactedNodes(), |
| context.getCompactedRootId() |
| ); |
| } |
| context.getGCListener().cleaned(reclaimedSize, finalSize); |
| context.getGCListener().info( |
| "cleanup completed in {}. Post cleanup size is {} and space reclaimed {}.", |
| watch, |
| newPrintableBytes(finalSize), |
| newPrintableBytes(reclaimedSize) |
| ); |
| return cleanupResult.getRemovableFiles(); |
| } |
| |
| private static CleanupContext newCleanupContext(Context context) { |
| return new DefaultCleanupContext(context.getSegmentTracker(), context.getReclaimer(), |
| context.getCompactedRootId()); |
| } |
| |
| private static String toFileNames(@NotNull List<String> files) { |
| if (files.isEmpty()) { |
| return "none"; |
| } else { |
| return Joiner.on(",").join(files); |
| } |
| } |
| |
| private static GCGeneration getGcGeneration(Context context) { |
| return context.getRevisions().getHead().getSegmentId().getGcGeneration(); |
| } |
| |
| private static long size(Context context) { |
| return context.getTarFiles().size(); |
| } |
| |
| } |