| /* |
| * Copyright (C) 2013, Google Inc. and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package org.eclipse.jgit.internal.storage.dfs; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.zip.Deflater; |
| |
| import org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase.PackSource; |
| import org.eclipse.jgit.internal.storage.pack.PackExt; |
| import org.eclipse.jgit.junit.JGitTestUtil; |
| import org.eclipse.jgit.junit.TestRng; |
| import org.eclipse.jgit.lib.AbbreviatedObjectId; |
| import org.eclipse.jgit.lib.Constants; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectInserter; |
| import org.eclipse.jgit.lib.ObjectLoader; |
| import org.eclipse.jgit.lib.ObjectReader; |
| import org.eclipse.jgit.util.IO; |
| import org.eclipse.jgit.util.RawParseUtils; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class DfsInserterTest { |
| InMemoryRepository db; |
| |
| @Before |
| public void setUp() { |
| db = new InMemoryRepository(new DfsRepositoryDescription("test")); |
| } |
| |
| @Test |
| public void testInserterDiscardsPack() throws IOException { |
| try (ObjectInserter ins = db.newObjectInserter()) { |
| ins.insert(Constants.OBJ_BLOB, Constants.encode("foo")); |
| ins.insert(Constants.OBJ_BLOB, Constants.encode("bar")); |
| assertEquals(0, db.getObjectDatabase().listPacks().size()); |
| } |
| assertEquals(0, db.getObjectDatabase().listPacks().size()); |
| } |
| |
| @Test |
| public void testReadFromInserterSmallObjects() throws IOException { |
| try (ObjectInserter ins = db.newObjectInserter()) { |
| ObjectId id1 = ins.insert(Constants.OBJ_BLOB, |
| Constants.encode("foo")); |
| ObjectId id2 = ins.insert(Constants.OBJ_BLOB, |
| Constants.encode("bar")); |
| assertEquals(0, db.getObjectDatabase().listPacks().size()); |
| |
| try (ObjectReader reader = ins.newReader()) { |
| assertSame(ins, reader.getCreatedFromInserter()); |
| assertEquals("foo", readString(reader.open(id1))); |
| assertEquals("bar", readString(reader.open(id2))); |
| assertEquals(0, db.getObjectDatabase().listPacks().size()); |
| ins.flush(); |
| assertEquals(1, db.getObjectDatabase().listPacks().size()); |
| } |
| } |
| } |
| |
| @Test |
| public void testReadFromInserterLargerObjects() throws IOException { |
| db.getObjectDatabase().getReaderOptions().setStreamFileThreshold(512); |
| DfsBlockCache.reconfigure(new DfsBlockCacheConfig() |
| .setBlockSize(512) |
| .setBlockLimit(2048)); |
| |
| byte[] data = new TestRng(JGitTestUtil.getName()).nextBytes(8192); |
| try (DfsInserter ins = (DfsInserter) db.newObjectInserter()) { |
| ins.setCompressionLevel(Deflater.NO_COMPRESSION); |
| ObjectId id1 = ins.insert(Constants.OBJ_BLOB, data); |
| assertEquals(0, db.getObjectDatabase().listPacks().size()); |
| |
| try (ObjectReader reader = ins.newReader()) { |
| assertSame(ins, reader.getCreatedFromInserter()); |
| assertTrue(Arrays.equals(data, readStream(reader.open(id1)))); |
| assertEquals(0, db.getObjectDatabase().listPacks().size()); |
| } |
| ins.flush(); |
| |
| } |
| List<DfsPackDescription> packs = db.getObjectDatabase().listPacks(); |
| assertEquals(1, packs.size()); |
| assertTrue(packs.get(0).getFileSize(PackExt.PACK) > 2048); |
| } |
| |
| @Test |
| public void testReadFromFallback() throws IOException { |
| try (ObjectInserter ins = db.newObjectInserter()) { |
| ObjectId id1 = ins.insert(Constants.OBJ_BLOB, |
| Constants.encode("foo")); |
| ins.flush(); |
| ObjectId id2 = ins.insert(Constants.OBJ_BLOB, |
| Constants.encode("bar")); |
| assertEquals(1, db.getObjectDatabase().listPacks().size()); |
| |
| try (ObjectReader reader = ins.newReader()) { |
| assertSame(ins, reader.getCreatedFromInserter()); |
| assertEquals("foo", readString(reader.open(id1))); |
| assertEquals("bar", readString(reader.open(id2))); |
| assertEquals(1, db.getObjectDatabase().listPacks().size()); |
| } |
| ins.flush(); |
| assertEquals(2, db.getObjectDatabase().listPacks().size()); |
| } |
| } |
| |
| @Test |
| public void testReaderResolve() throws IOException { |
| try (ObjectInserter ins = db.newObjectInserter()) { |
| ObjectId id1 = ins.insert(Constants.OBJ_BLOB, |
| Constants.encode("foo")); |
| ins.flush(); |
| ObjectId id2 = ins.insert(Constants.OBJ_BLOB, |
| Constants.encode("bar")); |
| String abbr1 = ObjectId.toString(id1).substring(0, 4); |
| String abbr2 = ObjectId.toString(id2).substring(0, 4); |
| assertFalse(abbr1.equals(abbr2)); |
| |
| try (ObjectReader reader = ins.newReader()) { |
| assertSame(ins, reader.getCreatedFromInserter()); |
| Collection<ObjectId> objs; |
| objs = reader.resolve(AbbreviatedObjectId.fromString(abbr1)); |
| assertEquals(1, objs.size()); |
| assertEquals(id1, objs.iterator().next()); |
| |
| objs = reader.resolve(AbbreviatedObjectId.fromString(abbr2)); |
| assertEquals(1, objs.size()); |
| assertEquals(id2, objs.iterator().next()); |
| } |
| } |
| } |
| |
| @Test |
| public void testGarbageSelectivelyVisible() throws IOException { |
| ObjectId fooId; |
| try (ObjectInserter ins = db.newObjectInserter()) { |
| fooId = ins.insert(Constants.OBJ_BLOB, Constants.encode("foo")); |
| ins.flush(); |
| } |
| assertEquals(1, db.getObjectDatabase().listPacks().size()); |
| |
| // Make pack 0 garbage. |
| db.getObjectDatabase().listPacks().get(0).setPackSource(PackSource.UNREACHABLE_GARBAGE); |
| |
| // Default behavior should be that the database has foo, because we allow garbage objects. |
| assertTrue(db.getObjectDatabase().has(fooId)); |
| // But we should not be able to see it if we pass the right args. |
| assertFalse(db.getObjectDatabase().has(fooId, true)); |
| } |
| |
| @Test |
| public void testInserterIgnoresUnreachable() throws IOException { |
| ObjectId fooId; |
| try (ObjectInserter ins = db.newObjectInserter()) { |
| fooId = ins.insert(Constants.OBJ_BLOB, Constants.encode("foo")); |
| ins.flush(); |
| assertEquals(1, db.getObjectDatabase().listPacks().size()); |
| |
| // Make pack 0 garbage. |
| db.getObjectDatabase().listPacks().get(0) |
| .setPackSource(PackSource.UNREACHABLE_GARBAGE); |
| |
| // We shouldn't be able to see foo because it's garbage. |
| assertFalse(db.getObjectDatabase().has(fooId, true)); |
| |
| // But if we re-insert foo, it should become visible again. |
| ins.insert(Constants.OBJ_BLOB, Constants.encode("foo")); |
| ins.flush(); |
| } |
| assertTrue(db.getObjectDatabase().has(fooId, true)); |
| |
| // Verify that we have a foo in both packs, and 1 of them is garbage. |
| try (DfsReader reader = new DfsReader(db.getObjectDatabase())) { |
| DfsPackFile packs[] = db.getObjectDatabase().getPacks(); |
| Set<PackSource> pack_sources = new HashSet<>(); |
| |
| assertEquals(2, packs.length); |
| |
| pack_sources.add(packs[0].getPackDescription().getPackSource()); |
| pack_sources.add(packs[1].getPackDescription().getPackSource()); |
| |
| assertTrue(packs[0].hasObject(reader, fooId)); |
| assertTrue(packs[1].hasObject(reader, fooId)); |
| assertTrue(pack_sources.contains(PackSource.UNREACHABLE_GARBAGE)); |
| assertTrue(pack_sources.contains(PackSource.INSERT)); |
| } |
| } |
| |
| @Test |
| public void testNoCheckExisting() throws IOException { |
| byte[] contents = Constants.encode("foo"); |
| ObjectId fooId; |
| try (ObjectInserter ins = db.newObjectInserter()) { |
| fooId = ins.insert(Constants.OBJ_BLOB, contents); |
| ins.flush(); |
| } |
| assertEquals(1, db.getObjectDatabase().listPacks().size()); |
| |
| try (ObjectInserter ins = db.newObjectInserter()) { |
| ((DfsInserter) ins).checkExisting(false); |
| assertEquals(fooId, ins.insert(Constants.OBJ_BLOB, contents)); |
| ins.flush(); |
| } |
| assertEquals(2, db.getObjectDatabase().listPacks().size()); |
| |
| // Verify that we have a foo in both INSERT packs. |
| try (DfsReader reader = new DfsReader(db.getObjectDatabase())) { |
| DfsPackFile packs[] = db.getObjectDatabase().getPacks(); |
| |
| assertEquals(2, packs.length); |
| DfsPackFile p1 = packs[0]; |
| assertEquals(PackSource.INSERT, |
| p1.getPackDescription().getPackSource()); |
| assertTrue(p1.hasObject(reader, fooId)); |
| |
| DfsPackFile p2 = packs[1]; |
| assertEquals(PackSource.INSERT, |
| p2.getPackDescription().getPackSource()); |
| assertTrue(p2.hasObject(reader, fooId)); |
| } |
| } |
| |
| private static String readString(ObjectLoader loader) throws IOException { |
| return RawParseUtils.decode(readStream(loader)); |
| } |
| |
| private static byte[] readStream(ObjectLoader loader) throws IOException { |
| ByteBuffer bb = IO.readWholeStream(loader.openStream(), 64); |
| byte[] buf = new byte[bb.remaining()]; |
| bb.get(buf); |
| return buf; |
| } |
| } |