| /* |
| * 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.file.tar.GCGeneration.newGCGeneration; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.File; |
| |
| import org.apache.jackrabbit.oak.segment.file.EstimationStrategy.Context; |
| import org.apache.jackrabbit.oak.segment.file.tar.TarPersistence; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| public class TailSizeDeltaEstimationStrategyTest { |
| |
| @Rule |
| public TemporaryFolder folder = new TemporaryFolder(new File("target")); |
| |
| private GCJournal journal; |
| |
| @Before |
| public void setUpJournal() { |
| journal = new GCJournal(new TarPersistence(folder.getRoot()).getGCJournalFile()); |
| } |
| |
| @Test |
| public void testTailSkippedEstimation() { |
| assertTrue(isGarbageCollectionNeeded(0, 1000)); |
| } |
| |
| @Test |
| public void testTailEmptyJournal() { |
| assertTrue(isGarbageCollectionNeeded(100, 1000)); |
| } |
| |
| @Test |
| public void testTailGCNeeded() { |
| journal.persist(100, 1000, newGCGeneration(1, 1, true), 1000, "id"); |
| journal.persist(110, 1100, newGCGeneration(2, 1, true), 1000, "id"); |
| journal.persist(120, 1200, newGCGeneration(3, 1, true), 1000, "id"); |
| assertTrue(isGarbageCollectionNeeded(50, 1300)); |
| } |
| |
| @Test |
| public void testTailGCSkipped() { |
| journal.persist(100, 1000, newGCGeneration(1, 1, true), 1000, "id"); |
| journal.persist(110, 1100, newGCGeneration(2, 1, true), 1000, "id"); |
| journal.persist(120, 1200, newGCGeneration(3, 1, true), 1000, "id"); |
| assertFalse(isGarbageCollectionNeeded(200, 1300)); |
| } |
| |
| private boolean isGarbageCollectionNeeded(long delta, long size) { |
| return new TailSizeDeltaEstimationStrategy().estimate(new Context() { |
| |
| @Override |
| public long getSizeDelta() { |
| return delta; |
| } |
| |
| @Override |
| public long getCurrentSize() { |
| return size; |
| } |
| |
| @Override |
| public GCJournal getGCJournal() { |
| return journal; |
| } |
| |
| }).isGcNeeded(); |
| } |
| |
| } |