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1   /*
2    * Copyright (C) 2012, Christian Halstrick <christian.halstrick@sap.com>
3    * and other copyright owners as documented in the project's IP log.
4    *
5    * This program and the accompanying materials are made available
6    * under the terms of the Eclipse Distribution License v1.0 which
7    * accompanies this distribution, is reproduced below, and is
8    * available at http://www.eclipse.org/org/documents/edl-v10.php
9    *
10   * All rights reserved.
11   *
12   * Redistribution and use in source and binary forms, with or
13   * without modification, are permitted provided that the following
14   * conditions are met:
15   *
16   * - Redistributions of source code must retain the above copyright
17   *   notice, this list of conditions and the following disclaimer.
18   *
19   * - Redistributions in binary form must reproduce the above
20   *   copyright notice, this list of conditions and the following
21   *   disclaimer in the documentation and/or other materials provided
22   *   with the distribution.
23   *
24   * - Neither the name of the Eclipse Foundation, Inc. nor the
25   *   names of its contributors may be used to endorse or promote
26   *   products derived from this software without specific prior
27   *   written permission.
28   *
29   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42   */
43  
44  package org.eclipse.jgit.internal.storage.file;
45  
46  import static org.junit.Assert.assertEquals;
47  import static org.junit.Assert.assertFalse;
48  import static org.junit.Assert.assertTrue;
49  
50  import java.io.File;
51  import java.util.Collections;
52  import java.util.Date;
53  
54  import org.eclipse.jgit.junit.TestRepository.BranchBuilder;
55  import org.eclipse.jgit.lib.ObjectId;
56  import org.eclipse.jgit.revwalk.RevBlob;
57  import org.eclipse.jgit.revwalk.RevCommit;
58  import org.eclipse.jgit.revwalk.RevTree;
59  import org.junit.Test;
60  
61  public class GcPruneNonReferencedTest extends GcTestCase {
62  	@Test
63  	public void nonReferencedNonExpiredObject_notPruned() throws Exception {
64  		RevBlob a = tr.blob("a");
65  		gc.setExpire(new Date(lastModified(a)));
66  		gc.prune(Collections.<ObjectId> emptySet());
67  		assertTrue(repo.getObjectDatabase().has(a));
68  	}
69  
70  	@Test
71  	public void nonReferencedExpiredObject_pruned() throws Exception {
72  		RevBlob a = tr.blob("a");
73  		gc.setExpireAgeMillis(0);
74  		fsTick();
75  		gc.prune(Collections.<ObjectId> emptySet());
76  		assertFalse(repo.getObjectDatabase().has(a));
77  	}
78  
79  	@Test
80  	public void nonReferencedExpiredObjectTree_pruned() throws Exception {
81  		RevBlob a = tr.blob("a");
82  		RevTree t = tr.tree(tr.file("a", a));
83  		gc.setExpireAgeMillis(0);
84  		fsTick();
85  		gc.prune(Collections.<ObjectId> emptySet());
86  		assertFalse(repo.getObjectDatabase().has(t));
87  		assertFalse(repo.getObjectDatabase().has(a));
88  	}
89  
90  	@Test
91  	public void nonReferencedObjects_onlyExpiredPruned() throws Exception {
92  		RevBlob a = tr.blob("a");
93  		gc.setExpire(new Date(lastModified(a) + 1));
94  
95  		fsTick();
96  		RevBlob b = tr.blob("b");
97  
98  		gc.prune(Collections.<ObjectId> emptySet());
99  		assertFalse(repo.getObjectDatabase().has(a));
100 		assertTrue(repo.getObjectDatabase().has(b));
101 	}
102 
103 	@Test
104 	public void testPackCommitsAndLooseOneWithPruneNow() throws Exception {
105 		BranchBuilder bb = tr.branch("refs/heads/master");
106 		RevCommit first = bb.commit().add("A", "A").add("B", "B").create();
107 		bb.commit().add("A", "A2").add("B", "B2").create();
108 		tr.update("refs/heads/master", first);
109 
110 		stats = gc.getStatistics();
111 		assertEquals(8, stats.numberOfLooseObjects);
112 		assertEquals(0, stats.numberOfPackedObjects);
113 		gc.setExpireAgeMillis(0);
114 		fsTick();
115 		gc.gc();
116 		stats = gc.getStatistics();
117 		assertNoEmptyFanoutDirectories();
118 		assertEquals(0, stats.numberOfLooseObjects);
119 		assertEquals(8, stats.numberOfPackedObjects);
120 		assertEquals(2, stats.numberOfPackFiles);
121 	}
122 
123 	private void assertNoEmptyFanoutDirectories() {
124 		File[] fanout = repo.getObjectsDirectory().listFiles();
125 		for (File f : fanout) {
126 			if (f.isDirectory()) {
127 				String[] entries = f.list();
128 				if (entries == null || entries.length == 0) {
129 					assertFalse(
130 							"Found empty fanout directory "
131 									+ f.getAbsolutePath() + " after pruning",
132 							f.getName().length() == 2);
133 				}
134 			}
135 		}
136 	}
137 }