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* Licensed to the Apache Software Foundation (ASF) under one
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* 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.streaming;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.UUID;
import java.util.concurrent.CancellationException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.junit.BeforeClass;
import org.junit.After;
import org.junit.Test;
import junit.framework.Assert;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.Keyspace;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.io.sstable.format.SSTableReader;
import org.apache.cassandra.schema.KeyspaceParams;
import org.apache.cassandra.schema.TableId;
import org.apache.cassandra.streaming.messages.OutgoingFileMessage;
import org.apache.cassandra.utils.FBUtilities;
import org.apache.cassandra.utils.concurrent.Ref;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
public class StreamTransferTaskTest
{
public static final String KEYSPACE1 = "StreamTransferTaskTest";
public static final String CF_STANDARD = "Standard1";
@BeforeClass
public static void defineSchema() throws ConfigurationException
{
SchemaLoader.prepareServer();
SchemaLoader.createKeyspace(KEYSPACE1,
KeyspaceParams.simple(1),
SchemaLoader.standardCFMD(KEYSPACE1, CF_STANDARD));
}
@After
public void tearDown()
{
ColumnFamilyStore cfs = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF_STANDARD);
cfs.clearUnsafe();
}
@Test
public void testScheduleTimeout() throws Exception
{
InetAddress peer = FBUtilities.getBroadcastAddress();
StreamSession session = new StreamSession(peer, peer, null, 0, true, null, PreviewKind.NONE);
ColumnFamilyStore cfs = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF_STANDARD);
// create two sstables
for (int i = 0; i < 2; i++)
{
SchemaLoader.insertData(KEYSPACE1, CF_STANDARD, i, 1);
cfs.forceBlockingFlush();
}
// create streaming task that streams those two sstables
StreamTransferTask task = new StreamTransferTask(session, cfs.metadata.id);
for (SSTableReader sstable : cfs.getLiveSSTables())
{
List<Range<Token>> ranges = new ArrayList<>();
ranges.add(new Range<>(sstable.first.getToken(), sstable.last.getToken()));
task.addTransferFile(sstable.selfRef(), 1, sstable.getPositionsForRanges(ranges));
}
assertEquals(2, task.getTotalNumberOfFiles());
// if file sending completes before timeout then the task should be canceled.
Future f = task.scheduleTimeout(0, 0, TimeUnit.NANOSECONDS);
f.get();
// when timeout runs on second file, task should be completed
f = task.scheduleTimeout(1, 10, TimeUnit.MILLISECONDS);
task.complete(1);
try
{
f.get();
Assert.assertTrue(false);
}
catch (CancellationException ex)
{
}
assertEquals(StreamSession.State.WAIT_COMPLETE, session.state());
// when all streaming are done, time out task should not be scheduled.
assertNull(task.scheduleTimeout(1, 1, TimeUnit.SECONDS));
}
@Test
public void testFailSessionDuringTransferShouldNotReleaseReferences() throws Exception
{
InetAddress peer = FBUtilities.getBroadcastAddress();
StreamCoordinator streamCoordinator = new StreamCoordinator(1, true, null, false, null, PreviewKind.NONE);
StreamResultFuture future = StreamResultFuture.init(UUID.randomUUID(), StreamOperation.OTHER, Collections.<StreamEventHandler>emptyList(), streamCoordinator);
StreamSession session = new StreamSession(peer, peer, null, 0, true, null, PreviewKind.NONE);
session.init(future);
ColumnFamilyStore cfs = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF_STANDARD);
// create two sstables
for (int i = 0; i < 2; i++)
{
SchemaLoader.insertData(KEYSPACE1, CF_STANDARD, i, 1);
cfs.forceBlockingFlush();
}
// create streaming task that streams those two sstables
StreamTransferTask task = new StreamTransferTask(session, cfs.metadata.id);
List<Ref<SSTableReader>> refs = new ArrayList<>(cfs.getLiveSSTables().size());
for (SSTableReader sstable : cfs.getLiveSSTables())
{
List<Range<Token>> ranges = new ArrayList<>();
ranges.add(new Range<>(sstable.first.getToken(), sstable.last.getToken()));
Ref<SSTableReader> ref = sstable.selfRef();
refs.add(ref);
task.addTransferFile(ref, 1, sstable.getPositionsForRanges(ranges));
}
assertEquals(2, task.getTotalNumberOfFiles());
//add task to stream session, so it is aborted when stream session fails
session.transfers.put(TableId.generate(), task);
//make a copy of outgoing file messages, since task is cleared when it's aborted
Collection<OutgoingFileMessage> files = new LinkedList<>(task.files.values());
//simulate start transfer
for (OutgoingFileMessage file : files)
{
file.startTransfer();
}
//fail stream session mid-transfer
session.onError(new Exception("Fake exception"));
//make sure reference was not released
for (Ref<SSTableReader> ref : refs)
{
assertEquals(1, ref.globalCount());
}
//simulate finish transfer
for (OutgoingFileMessage file : files)
{
file.finishTransfer();
}
//now reference should be released
for (Ref<SSTableReader> ref : refs)
{
assertEquals(0, ref.globalCount());
}
}
}