/*
* 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.segment;
import static org.junit.Assert.assertEquals;
import org.apache.jackrabbit.oak.api.CommitFailedException;
import org.apache.jackrabbit.oak.api.Type;
import org.apache.jackrabbit.oak.plugins.segment.memory.MemoryStore;
import org.apache.jackrabbit.oak.spi.commit.EmptyHook;
import org.apache.jackrabbit.oak.spi.commit.PostCommitHook;
import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
import org.apache.jackrabbit.oak.spi.state.NodeState;
import org.junit.Test;
public class JournalTest {
private final SegmentStore store = new MemoryStore();
private final SegmentNodeStore root = new SegmentNodeStore(store);
private final SegmentNodeStore left = new SegmentNodeStore(store, "left");
private final SegmentNodeStore right = new SegmentNodeStore(store, "right");
@Test
public void testChangesFromRoot() throws CommitFailedException {
NodeState oldState = root.getRoot();
assertEquals(oldState, left.getRoot());
assertEquals(oldState, right.getRoot());
NodeBuilder builder = oldState.builder();
builder.setProperty("foo", "bar");
NodeState newState = builder.getNodeState();
root.merge(builder, EmptyHook.INSTANCE, PostCommitHook.EMPTY);
assertEquals(newState, root.getRoot());
assertEquals(oldState, left.getRoot());
assertEquals(oldState, right.getRoot());
store.getJournal("left").merge();
assertEquals(newState, root.getRoot());
assertEquals(newState, left.getRoot());
assertEquals(oldState, right.getRoot());
store.getJournal("right").merge();
assertEquals(newState, root.getRoot());
assertEquals(newState, left.getRoot());
assertEquals(newState, right.getRoot());
}
@Test
public void testChangesToRoot() throws CommitFailedException {
NodeState oldState = root.getRoot();
assertEquals(oldState, left.getRoot());
assertEquals(oldState, right.getRoot());
NodeBuilder builder = oldState.builder();
builder.setProperty("foo", "bar");
NodeState newState = builder.getNodeState();
left.merge(builder, EmptyHook.INSTANCE, PostCommitHook.EMPTY);
assertEquals(oldState, root.getRoot());
assertEquals(newState, left.getRoot());
assertEquals(oldState, right.getRoot());
store.getJournal("left").merge();
assertEquals(newState, root.getRoot());
assertEquals(newState, left.getRoot());
assertEquals(oldState, right.getRoot());
store.getJournal("right").merge();
assertEquals(newState, root.getRoot());
assertEquals(newState, left.getRoot());
assertEquals(newState, right.getRoot());
}
@Test
public void testConcurrentChanges() throws CommitFailedException {
NodeState oldState = root.getRoot();
assertEquals(oldState, left.getRoot());
assertEquals(oldState, right.getRoot());
NodeBuilder leftBuilder = oldState.builder();
leftBuilder.setProperty("foo", "bar");
NodeState leftState = leftBuilder.getNodeState();
left.merge(leftBuilder, EmptyHook.INSTANCE, PostCommitHook.EMPTY);
assertEquals(oldState, root.getRoot());
assertEquals(leftState, left.getRoot());
assertEquals(oldState, right.getRoot());
store.getJournal("left").merge();
assertEquals(leftState, root.getRoot());
assertEquals(leftState, left.getRoot());
assertEquals(oldState, right.getRoot());
NodeBuilder rightBuilder = oldState.builder();
rightBuilder.setProperty("bar", "foo");
right.merge(rightBuilder, EmptyHook.INSTANCE, PostCommitHook.EMPTY);
store.getJournal("right").merge();
NodeState newState = root.getRoot();
assertEquals("bar", newState.getProperty("foo").getValue(Type.STRING));
assertEquals("foo", newState.getProperty("bar").getValue(Type.STRING));
assertEquals(leftState, left.getRoot());
assertEquals(newState, right.getRoot());
store.getJournal("left").merge();
assertEquals(newState, root.getRoot());
assertEquals(newState, left.getRoot());
assertEquals(newState, right.getRoot());
}
}