/*
* 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.core.data;
import java.io.IOException;
import java.io.InputStream;
import javax.jcr.Node;
import javax.jcr.RepositoryException;
import javax.jcr.Value;
import javax.jcr.ValueFactory;
import org.apache.jackrabbit.api.JackrabbitValue;
import org.apache.jackrabbit.core.RepositoryImpl;
import org.apache.jackrabbit.test.AbstractJCRTest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Test concurrent reads to the data store.
*/
public class TestTwoGetStreams extends AbstractJCRTest {
private static Logger log = LoggerFactory.getLogger(TestTwoGetStreams.class);
private static final int STREAM_LENGTH = 256 * 1024;
private boolean isDataStoreEnabled() throws RepositoryException {
RepositoryImpl rep = (RepositoryImpl) superuser.getRepository();
return rep.getDataStore() != null;
}
/**
* Test the JackrabbitValue.getContentIdentity feature.
*/
public void testContentIdentity() throws Exception {
if (!isDataStoreEnabled()) {
log.info("testContentIdentity skipped. Data store is not used.");
return;
}
Node root = superuser.getRootNode();
ValueFactory vf = superuser.getValueFactory();
root.setProperty("p1", vf.createBinary(new RandomInputStream(1, STREAM_LENGTH)));
root.setProperty("p2", vf.createBinary(new RandomInputStream(1, STREAM_LENGTH)));
superuser.save();
Value v1 = root.getProperty("p1").getValue();
Value v2 = root.getProperty("p2").getValue();
if (v1 instanceof JackrabbitValue && v2 instanceof JackrabbitValue) {
JackrabbitValue j1 = (JackrabbitValue) v1;
JackrabbitValue j2 = (JackrabbitValue) v2;
String id1 = j1.getContentIdentity();
String id2 = j2.getContentIdentity();
assertNotNull(id1);
assertEquals(id1, id2);
}
// copying a value should not stream the content
long time = System.currentTimeMillis();
for (int i = 0; i < 100; i++) {
Value v = root.getProperty("p1").getValue();
root.setProperty("p3", v);
}
superuser.save();
time = System.currentTimeMillis() - time;
// streaming 1 MB again and again takes about 4.3 seconds
// on my computer; copying the data identifier takes about 16 ms
assertTrue("time: " + time, time < 100);
}
/**
* Test reading from two concurrently opened streams.
*/
public void testTwoGetStreams() throws Exception {
if (!isDataStoreEnabled()) {
log.info("testContentIdentity skipped. Data store is not used.");
return;
}
Node root = superuser.getRootNode();
ValueFactory vf = superuser.getValueFactory();
root.setProperty("p1", vf.createBinary(new RandomInputStream(1, STREAM_LENGTH)));
root.setProperty("p2", vf.createBinary(new RandomInputStream(2, STREAM_LENGTH)));
superuser.save();
InputStream i1 = root.getProperty("p1").getBinary().getStream();
InputStream i2 = root.getProperty("p2").getBinary().getStream();
assertEquals("p1", i1, new RandomInputStream(1, STREAM_LENGTH));
assertEquals("p2", i2, new RandomInputStream(2, STREAM_LENGTH));
try {
i1.close();
} catch (IOException e) {
log.info("Could not close first input stream: ", e);
}
try {
i2.close();
} catch (IOException e) {
log.info("Could not close second input stream: ", e);
}
}
/**
* Tests reading concurrently from two different streams.
*/
public void testTwoStreamsConcurrently() throws Exception {
if (!isDataStoreEnabled()) {
log.info("testContentIdentity skipped. Data store is not used.");
return;
}
Node root = superuser.getRootNode();
ValueFactory vf = superuser.getValueFactory();
root.setProperty("p1", vf.createBinary(new RandomInputStream(1, STREAM_LENGTH)));
root.setProperty("p2", vf.createBinary(new RandomInputStream(1, STREAM_LENGTH)));
superuser.save();
InputStream i1 = root.getProperty("p1").getBinary().getStream();
InputStream i2 = root.getProperty("p2").getBinary().getStream();
assertEquals("Streams are different", i1, i2);
try {
i1.close();
} catch (IOException e) {
log.info("Could not close first input stream: ", e);
}
try {
i2.close();
} catch (IOException e) {
log.info("Could not close second input stream: ", e);
}
}
/**
* Tests reading concurrently from two different streams coming from the
* same property.
*/
public void testTwoStreamsFromSamePropertyConcurrently() throws Exception {
if (!isDataStoreEnabled()) {
log.info("testContentIdentity skipped. Data store is not used.");
return;
}
Node root = superuser.getRootNode();
ValueFactory vf = superuser.getValueFactory();
root.setProperty("p1", vf.createBinary(new RandomInputStream(1, STREAM_LENGTH)));
superuser.save();
InputStream i1 = root.getProperty("p1").getBinary().getStream();
InputStream i2 = root.getProperty("p1").getBinary().getStream();
assertEquals("Streams are different", i1, i2);
try {
i1.close();
} catch (IOException e) {
log.info("Could not close first input stream: ", e);
}
try {
i2.close();
} catch (IOException e) {
log.info("Could not close second input stream: ", e);
}
}
/**
* Asserts that two input streams are equal.
*/
protected void assertEquals(String message, InputStream i1, InputStream i2) {
try {
int b1 = 0, b2 = 0;
int i = 0;
while (b1 != -1 || b2 != -1) {
b1 = i1.read();
b2 = i2.read();
assertEquals(message + "; byte #" + i + " mismatch!", b2, b1);
++i;
}
} catch (Exception e) {
fail("Could not read inputstream! " + e);
}
}
}