| /* |
| * 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.plugins.document; |
| |
| import java.util.Map; |
| import java.util.concurrent.Semaphore; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.jackrabbit.oak.plugins.document.mongo.MongoDocumentStore; |
| import org.apache.jackrabbit.oak.plugins.document.util.Utils; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import com.google.common.collect.Maps; |
| import com.mongodb.DBObject; |
| import com.mongodb.MongoClient; |
| import com.mongodb.client.MongoDatabase; |
| |
| import static org.apache.jackrabbit.oak.plugins.document.Collection.NODES; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Test for OAK-1897 |
| */ |
| public class CacheConsistencyTest extends AbstractMongoConnectionTest { |
| |
| private TestStore store; |
| |
| @Before |
| @Override |
| public void setUpConnection() throws Exception { |
| mongoConnection = connectionFactory.getConnection(); |
| assertNotNull(mongoConnection); |
| MongoDatabase db = mongoConnection.getDatabase(); |
| MongoUtils.dropCollections(db); |
| DocumentMK.Builder builder = new DocumentMK.Builder() |
| .clock(getTestClock()).setAsyncDelay(0); |
| store = new TestStore(mongoConnection.getMongoClient(), db, builder); |
| mk = builder.setDocumentStore(store).open(); |
| } |
| |
| @Test |
| public void cacheConsistency() throws Exception { |
| mk.commit("/", "+\"node\":{}", null, null); |
| // add a child node. this will require an update |
| // of _lastRev on /node |
| mk.commit("/node", "+\"child\":{}", null, null); |
| |
| // make sure the document is not cached |
| store.invalidateCache(NODES, Utils.getIdFromPath("/node")); |
| |
| Thread t = new Thread(new Runnable() { |
| @Override |
| public void run() { |
| store.query(NODES, |
| Utils.getKeyLowerLimit(Path.ROOT), |
| Utils.getKeyUpperLimit(Path.ROOT), 10); |
| } |
| }); |
| // block thread when it tries to convert db objects |
| store.semaphores.put(t, new Semaphore(0)); |
| t.start(); |
| |
| while (!store.semaphores.get(t).hasQueuedThreads()) { |
| Thread.sleep(10); |
| } |
| |
| final Semaphore done = new Semaphore(0); |
| new Thread(new Runnable() { |
| @Override |
| public void run() { |
| // trigger write back of _lastRevs |
| mk.runBackgroundOperations(); |
| done.release(); |
| } |
| }).start(); |
| |
| // wait at most one second for background thread |
| done.tryAcquire(1, TimeUnit.SECONDS); |
| |
| // release thread |
| store.semaphores.get(t).release(); |
| t.join(); |
| |
| NodeState root = mk.getNodeStore().getRoot(); |
| assertTrue(root.getChildNode("node").getChildNode("child").exists()); |
| } |
| |
| private static final class TestStore extends MongoDocumentStore { |
| |
| final Map<Thread, Semaphore> semaphores = Maps.newConcurrentMap(); |
| |
| TestStore(MongoClient client, MongoDatabase db, DocumentMK.Builder builder) { |
| super(client, db, builder); |
| } |
| |
| @Override |
| protected <T extends Document> T convertFromDBObject( |
| @NotNull Collection<T> collection, @Nullable DBObject n) { |
| Semaphore s = semaphores.get(Thread.currentThread()); |
| if (s != null) { |
| s.acquireUninterruptibly(); |
| } |
| try { |
| return super.convertFromDBObject(collection, n); |
| } finally { |
| if (s != null) { |
| s.release(); |
| } |
| } |
| } |
| } |
| |
| } |