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Posted to oak-commits@jackrabbit.apache.org by re...@apache.org on 2016/05/26 11:02:38 UTC

svn commit: r1745589 - in /jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document: AbstractRDBConnectionTest.java CacheConsistencyRDBTest.java

Author: reschke
Date: Thu May 26 11:02:38 2016
New Revision: 1745589

URL: http://svn.apache.org/viewvc?rev=1745589&view=rev
Log:
OAK-3566: avoid stale documents in RDBDocumentStore cache by keeping track of which documents got invalidated while queries were running (ported to 1.2)

Add test case CacheConsistencyRDBTest from trunk. 

Added:
    jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/AbstractRDBConnectionTest.java   (with props)
    jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/CacheConsistencyRDBTest.java   (with props)

Added: jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/AbstractRDBConnectionTest.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/AbstractRDBConnectionTest.java?rev=1745589&view=auto
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--- jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/AbstractRDBConnectionTest.java (added)
+++ jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/AbstractRDBConnectionTest.java Thu May 26 11:02:38 2016
@@ -0,0 +1,99 @@
+/*
+ * 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.io.Closeable;
+import java.io.File;
+import java.util.UUID;
+
+import javax.sql.DataSource;
+
+import org.apache.jackrabbit.oak.plugins.document.rdb.RDBDataSourceFactory;
+import org.apache.jackrabbit.oak.plugins.document.rdb.RDBOptions;
+import org.apache.jackrabbit.oak.stats.Clock;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.BeforeClass;
+
+/**
+ * Base class for test cases that need a {@link DataSource}
+ * to a clean test database. Tests in subclasses are automatically
+ * skipped if the configured database connection can not be created.
+ */
+public class AbstractRDBConnectionTest extends DocumentMKTestBase {
+
+    protected DataSource dataSource;
+    protected DocumentMK mk;
+
+    private static final String fname = (new File("target")).isDirectory() ? "target/" : "";
+    private static final String RAWURL = System.getProperty("rdb.jdbc-url", "jdbc:h2:file:./target/h2test");
+    protected static final String USERNAME = System.getProperty("rdb.jdbc-user", "");
+    protected static final String PASSWD = System.getProperty("rdb.jdbc-passwd", "");
+    protected static final String URL = RAWURL.replace("{fname}", fname);
+
+    @BeforeClass
+    public static void checkRDBAvailable() {
+    }
+
+    @Before
+    public void setUpConnection() throws Exception {
+        dataSource = RDBDataSourceFactory.forJdbcUrl(URL, USERNAME, PASSWD);
+        Revision.setClock(getTestClock());
+        mk = newBuilder(dataSource).open();
+    }
+
+    protected DocumentMK.Builder newBuilder(DataSource db) throws Exception {
+        RDBOptions opt = new RDBOptions().tablePrefix("T" + UUID.randomUUID().toString().replace("-", "")).dropTablesOnClose(true);
+        return new DocumentMK.Builder().clock(getTestClock()).setRDBConnection(dataSource, opt);
+    }
+
+    protected Clock getTestClock() throws InterruptedException {
+        return Clock.SIMPLE;
+    }
+
+    @After
+    public void tearDownConnection() throws Exception {
+        if (mk != null) {
+            mk.dispose();
+        }
+        if (dataSource instanceof Closeable) {
+            ((Closeable)dataSource).close();
+        }
+        Revision.resetClockToDefault();
+    }
+
+    @Override
+    protected DocumentMK getMicroKernel() {
+        return mk;
+    }
+
+    protected static byte[] readFully(DocumentMK mk, String blobId) {
+        int remaining = (int) mk.getLength(blobId);
+        byte[] bytes = new byte[remaining];
+
+        int offset = 0;
+        while (remaining > 0) {
+            int count = mk.read(blobId, offset, bytes, offset, remaining);
+            if (count < 0) {
+                break;
+            }
+            offset += count;
+            remaining -= count;
+        }
+        return bytes;
+    }
+}

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Added: jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/CacheConsistencyRDBTest.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/CacheConsistencyRDBTest.java?rev=1745589&view=auto
==============================================================================
--- jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/CacheConsistencyRDBTest.java (added)
+++ jackrabbit/oak/branches/1.2/oak-core/src/test/java/org/apache/jackrabbit/oak/plugins/document/CacheConsistencyRDBTest.java Thu May 26 11:02:38 2016
@@ -0,0 +1,128 @@
+/*
+ * 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 static org.apache.jackrabbit.oak.plugins.document.Collection.NODES;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Map;
+import java.util.concurrent.Semaphore;
+import java.util.concurrent.TimeUnit;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import javax.sql.DataSource;
+
+import org.apache.jackrabbit.oak.plugins.document.DocumentMK.Builder;
+import org.apache.jackrabbit.oak.plugins.document.rdb.RDBDataSourceFactory;
+import org.apache.jackrabbit.oak.plugins.document.rdb.RDBDocumentStore;
+import org.apache.jackrabbit.oak.plugins.document.rdb.RDBOptions;
+import org.apache.jackrabbit.oak.plugins.document.rdb.RDBRow;
+import org.apache.jackrabbit.oak.plugins.document.util.Utils;
+import org.apache.jackrabbit.oak.spi.state.NodeState;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.google.common.collect.Maps;
+
+public class CacheConsistencyRDBTest extends AbstractRDBConnectionTest {
+
+    private TestStore store;
+
+    @Before
+    @Override
+    public void setUpConnection() throws Exception {
+        dataSource = RDBDataSourceFactory.forJdbcUrl(URL, USERNAME, PASSWD);
+        DocumentMK.Builder builder = new DocumentMK.Builder().clock(getTestClock()).setAsyncDelay(0);
+        RDBOptions opt = new RDBOptions().tablePrefix("T" + Long.toHexString(System.currentTimeMillis())).dropTablesOnClose(true);
+        store = new TestStore(dataSource, builder, opt);
+        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.invalidateNodeDocument(Utils.getIdFromPath("/node"));
+
+        Thread t = new Thread(new Runnable() {
+            @Override
+            public void run() {
+                store.query(NODES, Utils.getKeyLowerLimit("/"), Utils.getKeyUpperLimit("/"), 10);
+            }
+        }, "query");
+        // 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();
+            }
+        }, "mkbg").start();
+
+        // wait at most one second for background thread
+        done.tryAcquire(1, TimeUnit.SECONDS);
+        store.invalidateNodeDocument(Utils.getIdFromPath("/node"));
+
+        // 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 RDBDocumentStore {
+
+        final Map<Thread, Semaphore> semaphores = Maps.newConcurrentMap();
+
+        public TestStore(DataSource dataSource, Builder builder, RDBOptions opt) {
+            super(dataSource, builder, opt);
+        }
+
+        @Override
+        protected <T extends Document> T convertFromDBObject(@Nonnull Collection<T> collection, @Nullable RDBRow row) {
+            Semaphore s = semaphores.get(Thread.currentThread());
+            if (s != null) {
+                s.acquireUninterruptibly();
+            }
+            try {
+                return super.convertFromDBObject(collection, row);
+            } finally {
+                if (s != null) {
+                    s.release();
+                }
+            }
+        }
+
+        public void invalidateNodeDocument(String key) {
+            getNodeDocumentCache().invalidate(key);
+        }
+    }
+}

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