package org.apache.clerezza.rdf.jena.tdb.storage;
/*
*
* 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.
*
*/
import java.io.File;
import java.io.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import junit.framework.Assert;
import org.apache.clerezza.rdf.core.BNode;
import org.apache.clerezza.rdf.core.Literal;
import org.apache.clerezza.rdf.core.MGraph;
import org.apache.clerezza.rdf.core.Resource;
import org.apache.clerezza.rdf.core.Triple;
import org.apache.clerezza.rdf.core.UriRef;
import org.apache.clerezza.rdf.core.impl.PlainLiteralImpl;
import org.apache.clerezza.rdf.core.impl.TripleImpl;
import org.apache.felix.scr.annotations.Activate;
import org.junit.Before;
import org.junit.Test;
import org.wymiwyg.commons.util.Util;
public class MultiThreadedTest {
/**
* how many threads to start
*/
private static final int THREAD_COUNT = 100;
/**
* how many seconds to let them run
*/
private static final int DELAY = 120;
private MGraph mGraph;
private Set<Triple> testTriples = Collections.synchronizedSet(new HashSet<Triple>());
class TestThread extends Thread {
private final int id;
private boolean stopRequested;
private int addedTripleCount = 0;
public TestThread(final int id) {
this.id = id;
start();
}
public void requestStop() {
stopRequested = true;
}
@Override
public void run() {
while (!stopRequested) {
Literal randomLiteral = new PlainLiteralImpl(Util.createRandomString(22));
Triple triple = new TripleImpl(new BNode(), new UriRef("http://example.com/property"), randomLiteral);
mGraph.add(triple);
addedTripleCount++;
if ((addedTripleCount % 100) == 0) {
testTriples.add(triple);
}
}
}
public int getAddedTripleCount() {
return addedTripleCount;
}
}
@Before
public void setUp() throws IOException {
File tempFile;
UriRef MGRAPHNAME = new UriRef("http://text.example.org/");
TdbTcProvider tdbTcProvider;
tempFile = File.createTempFile("tdbtest", null);
tempFile.delete();
tempFile.mkdirs();
tdbTcProvider = new TdbTcProvider(tempFile);
tdbTcProvider.activate(null);
mGraph = tdbTcProvider.createMGraph(MGRAPHNAME);
}
@Test
public void perform() throws InterruptedException {
TestThread[] threads = new TestThread[THREAD_COUNT];
for (int i = 0; i < threads.length; i++) {
threads[i] = new TestThread(i);
}
Thread.sleep(DELAY*1000);
for (TestThread testThread : threads) {
testThread.requestStop();
}
for (TestThread testThread : threads) {
testThread.join();
}
int addedTriples = 0;
for (TestThread testThread : threads) {
addedTriples += testThread.getAddedTripleCount();
}
Assert.assertEquals(addedTriples, mGraph.size());
for (Triple testTriple : testTriples) {
Assert.assertTrue(mGraph.contains(testTriple));
}
}
}