/*
* 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.nifi.provenance.lucene;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.IOException;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicInteger;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field.Store;
import org.apache.lucene.document.StringField;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.TopDocs;
import org.apache.nifi.provenance.RepositoryConfiguration;
import org.apache.nifi.provenance.index.EventIndexSearcher;
import org.apache.nifi.provenance.index.EventIndexWriter;
import org.apache.nifi.util.file.FileUtils;
import org.junit.BeforeClass;
import org.junit.Test;
public class TestSimpleIndexManager {
@BeforeClass
public static void setLogLevel() {
System.setProperty("org.slf4j.simpleLogger.log.org.apache.nifi.provenance", "DEBUG");
}
@Test
public void testMultipleWritersSimultaneouslySameIndex() throws IOException {
final SimpleIndexManager mgr = new SimpleIndexManager(new RepositoryConfiguration());
final File dir = new File("target/" + UUID.randomUUID().toString());
try {
final EventIndexWriter writer1 = mgr.borrowIndexWriter(dir);
final EventIndexWriter writer2 = mgr.borrowIndexWriter(dir);
final Document doc1 = new Document();
doc1.add(new StringField("id", "1", Store.YES));
final Document doc2 = new Document();
doc2.add(new StringField("id", "2", Store.YES));
writer1.index(doc1, 1000);
writer2.index(doc2, 1000);
mgr.returnIndexWriter(writer2);
mgr.returnIndexWriter(writer1);
final EventIndexSearcher searcher = mgr.borrowIndexSearcher(dir);
final TopDocs topDocs = searcher.getIndexSearcher().search(new MatchAllDocsQuery(), 2);
assertEquals(2, topDocs.totalHits);
mgr.returnIndexSearcher(searcher);
} finally {
FileUtils.deleteFile(dir, true);
}
}
@Test
public void testWriterCloseIfPreviouslyMarkedCloseable() throws IOException {
final AtomicInteger closeCount = new AtomicInteger(0);
final SimpleIndexManager mgr = new SimpleIndexManager(new RepositoryConfiguration()) {
@Override
protected void close(IndexWriterCount count) throws IOException {
closeCount.incrementAndGet();
}
};
final File dir = new File("target/" + UUID.randomUUID().toString());
final EventIndexWriter writer1 = mgr.borrowIndexWriter(dir);
final EventIndexWriter writer2 = mgr.borrowIndexWriter(dir);
assertTrue(writer1 == writer2);
mgr.returnIndexWriter(writer1, true, true);
assertEquals(0, closeCount.get());
final EventIndexWriter[] writers = new EventIndexWriter[10];
for (int i = 0; i < writers.length; i++) {
writers[i] = mgr.borrowIndexWriter(dir);
assertTrue(writers[i] == writer1);
}
for (int i = 0; i < writers.length; i++) {
mgr.returnIndexWriter(writers[i], true, false);
assertEquals(0, closeCount.get());
assertEquals(1, mgr.getWriterCount());
}
// this should close the index writer even though 'false' is passed in
// because the previous call marked the writer as closeable and this is
// the last reference to the writer.
mgr.returnIndexWriter(writer2, false, false);
assertEquals(1, closeCount.get());
assertEquals(0, mgr.getWriterCount());
}
@Test
public void testWriterCloseIfOnlyUser() throws IOException {
final AtomicInteger closeCount = new AtomicInteger(0);
final SimpleIndexManager mgr = new SimpleIndexManager(new RepositoryConfiguration()) {
@Override
protected void close(IndexWriterCount count) throws IOException {
closeCount.incrementAndGet();
}
};
final File dir = new File("target/" + UUID.randomUUID().toString());
final EventIndexWriter writer = mgr.borrowIndexWriter(dir);
mgr.returnIndexWriter(writer, true, true);
assertEquals(1, closeCount.get());
}
@Test
public void testWriterLeftOpenIfNotCloseable() throws IOException {
final AtomicInteger closeCount = new AtomicInteger(0);
final SimpleIndexManager mgr = new SimpleIndexManager(new RepositoryConfiguration()) {
@Override
protected void close(IndexWriterCount count) throws IOException {
closeCount.incrementAndGet();
}
};
final File dir = new File("target/" + UUID.randomUUID().toString());
final EventIndexWriter writer = mgr.borrowIndexWriter(dir);
mgr.returnIndexWriter(writer, true, false);
assertEquals(0, closeCount.get());
}
}