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* 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.cassandra.cql3;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import com.datastax.driver.core.*;
import com.datastax.driver.core.policies.LoggingRetryPolicy;
import com.datastax.driver.core.policies.Policies;
import com.datastax.driver.core.utils.Bytes;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.Schema;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.service.EmbeddedCassandraService;
public class CorruptionTest extends SchemaLoader
{
private static EmbeddedCassandraService cassandra;
private static Cluster cluster;
private static Session session;
private static PreparedStatement getStatement;
private static PreparedStatement putStatement;
private static String KEYSPACE = "cass_test";
private static final String TABLE="put_test";
private static final String KEY = "SingleFailingKey";
private static String VALUE;
private final int THREADPOOL_SIZE=40;
@BeforeClass()
public static void setup() throws ConfigurationException, IOException
{
Schema.instance.clear();
cassandra = new EmbeddedCassandraService();
cassandra.start();
cluster = Cluster.builder().addContactPoint("127.0.0.1")
.withRetryPolicy(new LoggingRetryPolicy(Policies.defaultRetryPolicy()))
.withPort(DatabaseDescriptor.getNativeTransportPort()).build();
session = cluster.connect();
session.execute("CREATE KEYSPACE IF NOT EXISTS " + KEYSPACE +" WITH replication " +
"= {'class':'SimpleStrategy', 'replication_factor':1};");
session.execute("USE " + KEYSPACE);
session.execute("CREATE TABLE IF NOT EXISTS " + TABLE + " (" +
"key blob," +
"value blob," +
"PRIMARY KEY (key));");
// Prepared statements
getStatement = session.prepare("SELECT value FROM " + TABLE + " WHERE key = ?;");
getStatement.setConsistencyLevel(ConsistencyLevel.LOCAL_QUORUM);
putStatement = session.prepare("INSERT INTO " + TABLE + " (key, value) VALUES (?, ?);");
putStatement.setConsistencyLevel(ConsistencyLevel.LOCAL_QUORUM);
StringBuilder s = new StringBuilder();
char a='a';
char z='z';
for (int i = 0; i < 500*1024; i++)
{
char x = (char)((i%((z-a)+1))+a);
if (x == 'a')
{
x = '\n';
}
s.append(x);
}
VALUE = s.toString();
}
@Test
public void runCorruptionTest()
{
final CountDownLatch failure = new CountDownLatch(1);
ExecutorService executor = Executors.newFixedThreadPool(THREADPOOL_SIZE);
for (int i = 0; i < THREADPOOL_SIZE; i++)
{
executor.execute(new Runnable()
{
@Override
public void run()
{
for (int i = 0; i < 100000; i++)
{
put(KEY.getBytes(), VALUE.getBytes());
byte[] res = get(KEY.getBytes());
//since we're flooding the server we might get some timeouts, that's not
//relevant for this test
if (res == null)
continue;
if (!Arrays.equals(VALUE.getBytes(), res))
{
/*try
{
dumpKeys(VALUE.getBytes(), res);
}
catch (IOException e)
{
e.printStackTrace();
}*/
failure.countDown();
}
}
}
private void dumpKeys(byte[] putdata, byte[] getdata) throws IOException {
String basename = "bad-data-tid" + Thread.currentThread().getId();
File put = new File(basename+"-put");
File get = new File(basename+"-get");
try(FileWriter pw = new FileWriter(put)) {
pw.write(new String(putdata));
}
try(FileWriter pw = new FileWriter(get)) {
pw.write(new String(getdata));
}
}
});
}
try
{
assert!failure.await(2, TimeUnit.MINUTES);
}
catch (InterruptedException e)
{
}
executor.shutdownNow();
}
public static byte[] get(byte[] key)
{
BoundStatement boundStatement = new BoundStatement(getStatement);
boundStatement.setBytes(0, ByteBuffer.wrap(key));
final com.datastax.driver.core.ResultSet resultSet = session.execute(boundStatement);
final Row row = resultSet.one();
if (row != null)
{
final ByteBuffer byteBuf = row.getBytes("value");
return Bytes.getArray(byteBuf);
}
return null;
}
public static void put(byte[] key, byte[] value)
{
BoundStatement boundStatement = new BoundStatement(putStatement);
boundStatement.setBytes(0, ByteBuffer.wrap(key));
boundStatement.setBytes(1, ByteBuffer.wrap(value));
session.execute(boundStatement);
}
}