| /* |
| * 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 com.google.common.util.concurrent.MoreExecutors.listeningDecorator; |
| import static java.util.concurrent.Executors.newFixedThreadPool; |
| import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeoutException; |
| |
| import com.google.common.base.Function; |
| import com.google.common.base.Functions; |
| import com.google.common.util.concurrent.ListenableFuture; |
| import com.google.common.util.concurrent.ListeningExecutorService; |
| import org.apache.jackrabbit.oak.segment.RecordId; |
| import org.apache.jackrabbit.oak.segment.SegmentNodeBuilder; |
| import org.apache.jackrabbit.oak.segment.SegmentNodeState; |
| import org.apache.jackrabbit.oak.segment.spi.persistence.SegmentNodeStorePersistence; |
| import org.apache.jackrabbit.oak.segment.SegmentReader; |
| import org.apache.jackrabbit.oak.segment.file.tar.TarPersistence; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| public class TarRevisionsTest { |
| private FileStore store; |
| private TarRevisions revisions; |
| private SegmentReader reader; |
| |
| @Rule |
| public TemporaryFolder folder = new TemporaryFolder(new File("target")); |
| |
| private File getFileStoreFolder() { |
| return folder.getRoot(); |
| } |
| |
| protected SegmentNodeStorePersistence getPersistence() throws IOException { |
| return new TarPersistence(getFileStoreFolder()); |
| } |
| |
| @Before |
| public void setup() throws Exception { |
| store = FileStoreBuilder.fileStoreBuilder(getFileStoreFolder()).withCustomPersistence(getPersistence()).build(); |
| revisions = store.getRevisions(); |
| reader = store.getReader(); |
| store.flush(); |
| } |
| |
| @After |
| public void tearDown() { |
| if (store != null) { |
| store.close(); |
| store = null; |
| } |
| } |
| |
| @Test(expected = IllegalStateException.class) |
| public void unboundRevisions() throws IOException { |
| try (TarRevisions tarRevisions = new TarRevisions(getPersistence())) { |
| tarRevisions.getHead(); |
| } |
| } |
| |
| @NotNull |
| private JournalReader createJournalReader() throws IOException { |
| return new JournalReader(getPersistence().getJournalFile()); |
| } |
| |
| @Test |
| public void getHead() throws IOException { |
| try (JournalReader reader = createJournalReader()) { |
| assertTrue(reader.hasNext()); |
| assertEquals(revisions.getHead().toString10(), reader.next().getRevision()); |
| } |
| } |
| |
| @NotNull |
| private static SegmentNodeState addChild(SegmentNodeState node, String name) { |
| SegmentNodeBuilder builder = node.builder(); |
| builder.setChildNode(name); |
| return builder.getNodeState(); |
| } |
| |
| @Test |
| public void setHead() throws IOException { |
| RecordId headId = revisions.getHead(); |
| SegmentNodeState newRoot = addChild(reader.readNode(headId), "a"); |
| assertTrue(revisions.setHead(headId, newRoot.getRecordId())); |
| store.flush(); |
| |
| try (JournalReader reader = createJournalReader()) { |
| assertTrue(reader.hasNext()); |
| assertEquals(newRoot.getRecordId().toString10(), reader.next().getRevision()); |
| } |
| } |
| |
| @Test |
| public void setHeadFromFunction() throws IOException, InterruptedException { |
| RecordId headId = revisions.getHead(); |
| SegmentNodeState root = reader.readNode(headId); |
| |
| final SegmentNodeState newRoot = addChild(root, "a"); |
| assertNotNull(revisions.setHead(new Function<RecordId, RecordId>() { |
| @Nullable |
| @Override |
| public RecordId apply(RecordId headId) { |
| return newRoot.getRecordId(); |
| } |
| })); |
| store.flush(); |
| |
| try (JournalReader reader = createJournalReader()) { |
| assertTrue(reader.hasNext()); |
| assertEquals(newRoot.getRecordId().toString10(), reader.next().getRevision()); |
| } |
| } |
| |
| @Test |
| public void concurrentSetHead() { |
| RecordId headId = revisions.getHead(); |
| SegmentNodeState rootA = addChild(reader.readNode(headId), "a"); |
| SegmentNodeState rootB = addChild(reader.readNode(headId), "a"); |
| assertTrue(revisions.setHead(headId, rootA.getRecordId())); |
| assertFalse(revisions.setHead(headId, rootB.getRecordId())); |
| assertEquals(rootA, reader.readHeadState(revisions)); |
| } |
| |
| @Test |
| public void concurrentSetHeadFromFunction() |
| throws InterruptedException, ExecutionException, TimeoutException { |
| ListeningExecutorService executor = listeningDecorator(newFixedThreadPool(2)); |
| try { |
| ListenableFuture<Boolean> t1 = executor.submit(new Callable<Boolean>() { |
| @Override |
| public Boolean call() throws Exception { |
| return null != revisions.setHead(new Function<RecordId, RecordId>() { |
| @Nullable |
| @Override |
| public RecordId apply(RecordId headId) { |
| return addChild(reader.readNode(headId), "a").getRecordId(); |
| } |
| }); |
| } |
| }); |
| ListenableFuture<Boolean> t2 = executor.submit(new Callable<Boolean>() { |
| @Override |
| public Boolean call() throws Exception { |
| return null != revisions.setHead(new Function<RecordId, RecordId>() { |
| @Nullable |
| @Override |
| public RecordId apply(RecordId headId) { |
| return addChild(reader.readNode(headId), "b").getRecordId(); |
| } |
| }); |
| } |
| }); |
| |
| assertTrue(t1.get(500, MILLISECONDS)); |
| assertTrue(t2.get(500, MILLISECONDS)); |
| |
| SegmentNodeState root = reader.readNode(revisions.getHead()); |
| assertTrue(root.hasChildNode("a")); |
| assertTrue(root.hasChildNode("b")); |
| } finally { |
| executor.shutdown(); |
| } |
| } |
| |
| @Test |
| public void setFromFunctionBlocks() |
| throws ExecutionException, InterruptedException, TimeoutException { |
| ListeningExecutorService executor = listeningDecorator(newFixedThreadPool(2)); |
| try { |
| final CountDownLatch latch = new CountDownLatch(1); |
| |
| ListenableFuture<Boolean> t1 = executor.submit(new Callable<Boolean>() { |
| @Override |
| public Boolean call() throws Exception { |
| latch.await(); |
| return null != revisions.setHead(Functions.<RecordId>identity()); |
| } |
| }); |
| |
| try { |
| t1.get(500, MILLISECONDS); |
| fail("SetHead from function should block"); |
| } catch (TimeoutException expected) {} |
| |
| ListenableFuture<Boolean> t2 = executor.submit(new Callable<Boolean>() { |
| @Override |
| public Boolean call() throws Exception { |
| latch.countDown(); |
| return null != revisions.setHead(Functions.<RecordId>identity()); |
| } |
| }); |
| |
| assertTrue(t2.get(500, MILLISECONDS)); |
| assertTrue(t1.get(500, MILLISECONDS)); |
| } finally { |
| executor.shutdown(); |
| } |
| } |
| |
| } |