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- /*
- * 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.lib;
-
- import static org.hamcrest.CoreMatchers.hasItem;
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertNotNull;
- import static org.junit.Assert.assertNotSame;
- import static org.junit.Assert.assertSame;
- import static org.junit.Assert.assertThat;
- import static org.junit.Assert.assertTrue;
- import static org.junit.Assert.fail;
-
- import java.io.File;
- import java.io.IOException;
-
- import org.eclipse.jgit.errors.RepositoryNotFoundException;
- import org.eclipse.jgit.junit.RepositoryTestCase;
- import org.eclipse.jgit.lib.RepositoryCache.FileKey;
- import org.junit.Test;
-
- public class RepositoryCacheTest extends RepositoryTestCase {
- @Test
- public void testNonBareFileKey() throws IOException {
- File gitdir = db.getDirectory();
- File parent = gitdir.getParentFile();
- File other = new File(parent, "notagit");
- assertEqualsFile(gitdir, FileKey.exact(gitdir, db.getFS()).getFile());
- assertEqualsFile(parent, FileKey.exact(parent, db.getFS()).getFile());
- assertEqualsFile(other, FileKey.exact(other, db.getFS()).getFile());
-
- assertEqualsFile(gitdir, FileKey.lenient(gitdir, db.getFS()).getFile());
- assertEqualsFile(gitdir, FileKey.lenient(parent, db.getFS()).getFile());
- assertEqualsFile(other, FileKey.lenient(other, db.getFS()).getFile());
- }
-
- @Test
- public void testBareFileKey() throws IOException {
- Repository bare = createBareRepository();
- File gitdir = bare.getDirectory();
- File parent = gitdir.getParentFile();
- String name = gitdir.getName();
- assertTrue(name.endsWith(".git"));
- name = name.substring(0, name.length() - 4);
-
- assertEqualsFile(gitdir, FileKey.exact(gitdir, db.getFS()).getFile());
-
- assertEqualsFile(gitdir, FileKey.lenient(gitdir, db.getFS()).getFile());
- assertEqualsFile(gitdir,
- FileKey.lenient(new File(parent, name), db.getFS()).getFile());
- }
-
- @Test
- public void testFileKeyOpenExisting() throws IOException {
- try (Repository r = new FileKey(db.getDirectory(), db.getFS())
- .open(true)) {
- assertNotNull(r);
- assertEqualsFile(db.getDirectory(), r.getDirectory());
- }
-
- try (Repository r = new FileKey(db.getDirectory(), db.getFS())
- .open(false)) {
- assertNotNull(r);
- assertEqualsFile(db.getDirectory(), r.getDirectory());
- }
- }
-
- @Test
- public void testFileKeyOpenNew() throws IOException {
- File gitdir;
- try (Repository n = createRepository(true, false)) {
- gitdir = n.getDirectory();
- }
- recursiveDelete(gitdir);
- assertFalse(gitdir.exists());
-
- try {
- new FileKey(gitdir, db.getFS()).open(true);
- fail("incorrectly opened a non existant repository");
- } catch (RepositoryNotFoundException e) {
- assertEquals("repository not found: " + gitdir.getCanonicalPath(),
- e.getMessage());
- }
-
- final Repository o = new FileKey(gitdir, db.getFS()).open(false);
- assertNotNull(o);
- assertEqualsFile(gitdir, o.getDirectory());
- assertFalse(gitdir.exists());
- }
-
- @Test
- public void testCacheRegisterOpen() throws Exception {
- final File dir = db.getDirectory();
- RepositoryCache.register(db);
- assertSame(db, RepositoryCache.open(FileKey.exact(dir, db.getFS())));
-
- assertEquals(".git", dir.getName());
- final File parent = dir.getParentFile();
- assertSame(db, RepositoryCache.open(FileKey.lenient(parent, db.getFS())));
- }
-
- @Test
- public void testCacheOpen() throws Exception {
- final FileKey loc = FileKey.exact(db.getDirectory(), db.getFS());
- @SuppressWarnings("resource") // We are testing the close() method
- final Repository d2 = RepositoryCache.open(loc);
- assertNotSame(db, d2);
- assertSame(d2, RepositoryCache.open(FileKey.exact(loc.getFile(), db.getFS())));
- d2.close();
- d2.close();
- }
-
- @Test
- public void testGetRegisteredWhenEmpty() {
- assertEquals(0, RepositoryCache.getRegisteredKeys().size());
- }
-
- @Test
- public void testGetRegistered() {
- RepositoryCache.register(db);
-
- assertThat(RepositoryCache.getRegisteredKeys(),
- hasItem(FileKey.exact(db.getDirectory(), db.getFS())));
- assertEquals(1, RepositoryCache.getRegisteredKeys().size());
- }
-
- @Test
- public void testUnregister() {
- RepositoryCache.register(db);
- RepositoryCache
- .unregister(FileKey.exact(db.getDirectory(), db.getFS()));
-
- assertEquals(0, RepositoryCache.getRegisteredKeys().size());
- }
-
- @Test
- public void testRepositoryUsageCount() throws Exception {
- FileKey loc = FileKey.exact(db.getDirectory(), db.getFS());
- @SuppressWarnings("resource") // We are testing the close() method
- Repository d2 = RepositoryCache.open(loc);
- assertEquals(1, d2.useCnt.get());
- RepositoryCache.open(FileKey.exact(loc.getFile(), db.getFS()));
- assertEquals(2, d2.useCnt.get());
- d2.close();
- assertEquals(1, d2.useCnt.get());
- d2.close();
- assertEquals(0, d2.useCnt.get());
- }
-
- @Test
- public void testRepositoryUsageCountWithRegisteredRepository()
- throws IOException {
- @SuppressWarnings("resource") // We are testing the close() method
- Repository repo = createRepository(false, false);
- assertEquals(1, repo.useCnt.get());
- RepositoryCache.register(repo);
- assertEquals(1, repo.useCnt.get());
- repo.close();
- assertEquals(0, repo.useCnt.get());
- }
-
- @Test
- public void testRepositoryNotUnregisteringWhenClosing() throws Exception {
- FileKey loc = FileKey.exact(db.getDirectory(), db.getFS());
- @SuppressWarnings("resource") // We are testing the close() method
- Repository d2 = RepositoryCache.open(loc);
- assertEquals(1, d2.useCnt.get());
- assertThat(RepositoryCache.getRegisteredKeys(),
- hasItem(FileKey.exact(db.getDirectory(), db.getFS())));
- assertEquals(1, RepositoryCache.getRegisteredKeys().size());
- d2.close();
- assertEquals(0, d2.useCnt.get());
- assertEquals(1, RepositoryCache.getRegisteredKeys().size());
- assertTrue(RepositoryCache.isCached(d2));
- }
-
- @Test
- public void testRepositoryUnregisteringWhenExpiredAndUsageCountNegative()
- throws Exception {
- @SuppressWarnings("resource") // We are testing the close() method
- Repository repoA = createBareRepository();
- RepositoryCache.register(repoA);
-
- assertEquals(1, RepositoryCache.getRegisteredKeys().size());
- assertTrue(RepositoryCache.isCached(repoA));
-
- // close the repo twice to make usage count negative
- repoA.close();
- repoA.close();
- // fake that repoA was closed more than 1 hour ago (default expiration
- // time)
- repoA.closedAt.set(System.currentTimeMillis() - 65 * 60 * 1000);
-
- RepositoryCache.clearExpired();
-
- assertEquals(0, RepositoryCache.getRegisteredKeys().size());
- }
-
- @Test
- public void testRepositoryUnregisteringWhenExpired() throws Exception {
- @SuppressWarnings("resource") // We are testing the close() method
- Repository repoA = createRepository(true, false);
- @SuppressWarnings("resource") // We are testing the close() method
- Repository repoB = createRepository(true, false);
- Repository repoC = createBareRepository();
- RepositoryCache.register(repoA);
- RepositoryCache.register(repoB);
- RepositoryCache.register(repoC);
-
- assertEquals(3, RepositoryCache.getRegisteredKeys().size());
- assertTrue(RepositoryCache.isCached(repoA));
- assertTrue(RepositoryCache.isCached(repoB));
- assertTrue(RepositoryCache.isCached(repoC));
-
- // fake that repoA was closed more than 1 hour ago (default expiration
- // time)
- repoA.close();
- repoA.closedAt.set(System.currentTimeMillis() - 65 * 60 * 1000);
- // close repoB but this one will not be expired
- repoB.close();
-
- assertEquals(3, RepositoryCache.getRegisteredKeys().size());
- assertTrue(RepositoryCache.isCached(repoA));
- assertTrue(RepositoryCache.isCached(repoB));
- assertTrue(RepositoryCache.isCached(repoC));
-
- RepositoryCache.clearExpired();
-
- assertEquals(2, RepositoryCache.getRegisteredKeys().size());
- assertFalse(RepositoryCache.isCached(repoA));
- assertTrue(RepositoryCache.isCached(repoB));
- assertTrue(RepositoryCache.isCached(repoC));
- }
-
- @Test
- public void testReconfigure() throws InterruptedException, IOException {
- @SuppressWarnings("resource") // We are testing the close() method
- Repository repo = createRepository(false, false);
- RepositoryCache.register(repo);
- assertTrue(RepositoryCache.isCached(repo));
- repo.close();
- assertTrue(RepositoryCache.isCached(repo));
-
- // Actually, we would only need to validate that
- // WorkQueue.getExecutor().scheduleWithFixedDelay is called with proper
- // values but since we do not have a mock library, we test
- // reconfiguration from a black box perspective. I.e. reconfigure
- // expireAfter and cleanupDelay to 1 ms and wait until the Repository
- // is evicted to prove that reconfiguration worked.
- RepositoryCacheConfig config = new RepositoryCacheConfig();
- config.setExpireAfter(1);
- config.setCleanupDelay(1);
- config.install();
-
- // Instead of using a fixed waiting time, start with small and increase:
- // sleep 1, 2, 4, 8, 16, ..., 1024 ms
- // This wait will time out after 2048 ms
- for (int i = 0; i <= 10; i++) {
- Thread.sleep(1 << i);
- if (!RepositoryCache.isCached(repo)) {
- return;
- }
- }
- fail("Repository should have been evicted from cache");
- }
- }
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