| /* |
| * Copyright (C) 2009, Google Inc. |
| * and other copyright owners as documented in the project's IP log. |
| * |
| * This program and the accompanying materials are made available |
| * under the terms of the Eclipse Distribution License v1.0 which |
| * accompanies this distribution, is reproduced below, and is |
| * available at http://www.eclipse.org/org/documents/edl-v10.php |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * - Neither the name of the Eclipse Foundation, Inc. nor the |
| * names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.eclipse.jgit.internal.storage.file; |
| |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.BufferedReader; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| |
| import org.eclipse.jgit.errors.CorruptObjectException; |
| import org.eclipse.jgit.junit.JGitTestUtil; |
| import org.eclipse.jgit.lib.Constants; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectLoader; |
| import org.eclipse.jgit.storage.file.WindowCacheConfig; |
| import org.eclipse.jgit.storage.file.WindowCacheStats; |
| import org.eclipse.jgit.test.resources.SampleDataRepositoryTestCase; |
| import org.eclipse.jgit.util.MutableInteger; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| |
| @RunWith(Parameterized.class) |
| public class WindowCacheGetTest extends SampleDataRepositoryTestCase { |
| private List<TestObject> toLoad; |
| private WindowCacheConfig cfg; |
| private boolean useStrongRefs; |
| |
| @Parameters(name = "useStrongRefs={0}") |
| public static Collection<Object[]> data() { |
| return Arrays |
| .asList(new Object[][] { { Boolean.TRUE }, { Boolean.FALSE } }); |
| } |
| |
| public WindowCacheGetTest(Boolean useStrongRef) { |
| this.useStrongRefs = useStrongRef.booleanValue(); |
| } |
| |
| @Override |
| @Before |
| public void setUp() throws Exception { |
| super.setUp(); |
| |
| toLoad = new ArrayList<>(); |
| try (BufferedReader br = new BufferedReader(new InputStreamReader( |
| new FileInputStream(JGitTestUtil |
| .getTestResourceFile("all_packed_objects.txt")), |
| UTF_8))) { |
| String line; |
| while ((line = br.readLine()) != null) { |
| final String[] parts = line.split(" {1,}"); |
| final TestObject o = new TestObject(); |
| o.id = ObjectId.fromString(parts[0]); |
| o.setType(parts[1]); |
| // parts[2] is the inflate size |
| // parts[3] is the size-in-pack |
| // parts[4] is the offset in the pack |
| toLoad.add(o); |
| } |
| } |
| assertEquals(96, toLoad.size()); |
| cfg = new WindowCacheConfig(); |
| cfg.setPackedGitUseStrongRefs(useStrongRefs); |
| } |
| |
| @Test |
| public void testCache_Defaults() throws IOException { |
| cfg.install(); |
| doCacheTests(); |
| checkLimits(cfg); |
| |
| final WindowCache cache = WindowCache.getInstance(); |
| WindowCacheStats s = cache.getStats(); |
| assertEquals(6, s.getOpenFileCount()); |
| assertEquals(17346, s.getOpenByteCount()); |
| assertEquals(0, s.getEvictionCount()); |
| assertEquals(90, s.getHitCount()); |
| assertTrue(s.getHitRatio() > 0.0 && s.getHitRatio() < 1.0); |
| assertEquals(6, s.getLoadCount()); |
| assertEquals(0, s.getLoadFailureCount()); |
| assertEquals(0, s.getLoadFailureRatio(), 0.001); |
| assertEquals(6, s.getLoadSuccessCount()); |
| assertEquals(6, s.getMissCount()); |
| assertTrue(s.getMissRatio() > 0.0 && s.getMissRatio() < 1.0); |
| assertEquals(96, s.getRequestCount()); |
| assertTrue(s.getAverageLoadTime() > 0.0); |
| assertTrue(s.getTotalLoadTime() > 0.0); |
| } |
| |
| @Test |
| public void testCache_TooFewFiles() throws IOException { |
| cfg.setPackedGitOpenFiles(2); |
| cfg.install(); |
| doCacheTests(); |
| checkLimits(cfg); |
| } |
| |
| @Test |
| public void testCache_TooSmallLimit() throws IOException { |
| cfg.setPackedGitWindowSize(4096); |
| cfg.setPackedGitLimit(4096); |
| cfg.install(); |
| doCacheTests(); |
| checkLimits(cfg); |
| } |
| |
| private static void checkLimits(WindowCacheConfig cfg) { |
| final WindowCache cache = WindowCache.getInstance(); |
| WindowCacheStats s = cache.getStats(); |
| assertTrue("average load time should be > 0", |
| 0 < s.getAverageLoadTime()); |
| assertTrue("open byte count should be > 0", 0 < s.getOpenByteCount()); |
| assertTrue("eviction count should be >= 0", 0 <= s.getEvictionCount()); |
| assertTrue("hit count should be > 0", 0 < s.getHitCount()); |
| assertTrue("hit ratio should be > 0", 0 < s.getHitRatio()); |
| assertTrue("hit ratio should be < 1", 1 > s.getHitRatio()); |
| assertTrue("load count should be > 0", 0 < s.getLoadCount()); |
| assertTrue("load failure count should be >= 0", |
| 0 <= s.getLoadFailureCount()); |
| assertTrue("load failure ratio should be >= 0", |
| 0.0 <= s.getLoadFailureRatio()); |
| assertTrue("load failure ratio should be < 1", |
| 1 > s.getLoadFailureRatio()); |
| assertTrue("load success count should be > 0", |
| 0 < s.getLoadSuccessCount()); |
| assertTrue("open byte count should be <= core.packedGitLimit", |
| s.getOpenByteCount() <= cfg.getPackedGitLimit()); |
| assertTrue("open file count should be <= core.packedGitOpenFiles", |
| s.getOpenFileCount() <= cfg.getPackedGitOpenFiles()); |
| assertTrue("miss success count should be >= 0", 0 <= s.getMissCount()); |
| assertTrue("miss ratio should be > 0", 0 <= s.getMissRatio()); |
| assertTrue("miss ratio should be < 1", 1 > s.getMissRatio()); |
| assertTrue("request count should be > 0", 0 < s.getRequestCount()); |
| assertTrue("total load time should be > 0", 0 < s.getTotalLoadTime()); |
| } |
| |
| private void doCacheTests() throws IOException { |
| for (TestObject o : toLoad) { |
| final ObjectLoader or = db.open(o.id, o.type); |
| assertNotNull(or); |
| assertEquals(o.type, or.getType()); |
| } |
| } |
| |
| private static class TestObject { |
| ObjectId id; |
| |
| int type; |
| |
| void setType(String typeStr) throws CorruptObjectException { |
| final byte[] typeRaw = Constants.encode(typeStr + " "); |
| final MutableInteger ptr = new MutableInteger(); |
| type = Constants.decodeTypeString(id, typeRaw, (byte) ' ', ptr); |
| } |
| } |
| } |