/*
* 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.lucene.search;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Random;
import java.util.concurrent.CountDownLatch;
import org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.StoredField;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.Term;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util.TestUtil;
public class TestLiveFieldValues extends LuceneTestCase {
public void test() throws Exception {
Directory dir = newFSDirectory(createTempDir("livefieldupdates"));
IndexWriterConfig iwc = newIndexWriterConfig(new MockAnalyzer(random()));
final IndexWriter w = new IndexWriter(dir, iwc);
final SearcherManager mgr = new SearcherManager(w, new SearcherFactory() {
@Override
public IndexSearcher newSearcher(IndexReader r, IndexReader previous) {
return new IndexSearcher(r);
}
});
final Integer missing = -1;
final LiveFieldValues<IndexSearcher,Integer> rt = new LiveFieldValues<IndexSearcher,Integer>(mgr, missing) {
@Override
protected Integer lookupFromSearcher(IndexSearcher s, String id) throws IOException {
TermQuery tq = new TermQuery(new Term("id", id));
TopDocs hits = s.search(tq, 1);
assertTrue(hits.totalHits <= 1);
if (hits.totalHits == 0) {
return null;
} else {
Document doc = s.doc(hits.scoreDocs[0].doc);
return (Integer) doc.getField("field").numericValue();
}
}
};
int numThreads = TestUtil.nextInt(random(), 2, 5);
if (VERBOSE) {
System.out.println(numThreads + " threads");
}
final CountDownLatch startingGun = new CountDownLatch(1);
List<Thread> threads = new ArrayList<>();
final int iters = atLeast(1000);
final int idCount = TestUtil.nextInt(random(), 100, 10000);
final double reopenChance = random().nextDouble()*0.01;
final double deleteChance = random().nextDouble()*0.25;
final double addChance = random().nextDouble()*0.5;
for(int t=0;t<numThreads;t++) {
final int threadID = t;
final Random threadRandom = new Random(random().nextLong());
Thread thread = new Thread() {
@Override
public void run() {
try {
Map<String,Integer> values = new HashMap<>();
List<String> allIDs = Collections.synchronizedList(new ArrayList<String>());
startingGun.await();
for(int iter=0; iter<iters;iter++) {
// Add/update a document
Document doc = new Document();
// Threads must not update the same id at the
// same time:
if (threadRandom.nextDouble() <= addChance) {
String id = String.format(Locale.ROOT, "%d_%04x", threadID, threadRandom.nextInt(idCount));
Integer field = threadRandom.nextInt(Integer.MAX_VALUE);
doc.add(newStringField("id", new BytesRef(id), Field.Store.YES));
doc.add(new StoredField("field", field.intValue()));
w.updateDocument(new Term("id", id), doc);
rt.add(id, field);
if (values.put(id, field) == null) {
allIDs.add(id);
}
}
if (allIDs.size() > 0 && threadRandom.nextDouble() <= deleteChance) {
String randomID = allIDs.get(threadRandom.nextInt(allIDs.size()));
w.deleteDocuments(new Term("id", new BytesRef(randomID)));
rt.delete(randomID);
values.put(randomID, missing);
}
if (threadRandom.nextDouble() <= reopenChance || rt.size() > 10000) {
//System.out.println("refresh @ " + rt.size());
mgr.maybeRefresh();
if (VERBOSE) {
IndexSearcher s = mgr.acquire();
try {
System.out.println("TEST: reopen " + s);
} finally {
mgr.release(s);
}
System.out.println("TEST: " + values.size() + " values");
}
}
if (threadRandom.nextInt(10) == 7) {
assertEquals(null, rt.get("foo"));
}
if (allIDs.size() > 0) {
String randomID = allIDs.get(threadRandom.nextInt(allIDs.size()));
Integer expected = values.get(randomID);
if (expected == missing) {
expected = null;
}
assertEquals("id=" + randomID, expected, rt.get(randomID));
}
}
} catch (Throwable t) {
throw new RuntimeException(t);
}
}
};
threads.add(thread);
thread.start();
}
startingGun.countDown();
for(Thread thread : threads) {
thread.join();
}
mgr.maybeRefresh();
assertEquals(0, rt.size());
rt.close();
mgr.close();
w.close();
dir.close();
}
}