/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.hbase.ipc;
import static org.apache.hadoop.hbase.HBaseTestingUtility.fam1;
import static org.junit.Assert.assertTrue;
import com.google.common.collect.Lists;
import java.io.IOException;
import java.net.Socket;
import java.net.SocketAddress;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.CategoryBasedTimeout;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.MetricsConnection;
import org.apache.hadoop.hbase.client.RetriesExhaustedException;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.ExpectedException;
import org.junit.rules.TestName;
import org.junit.rules.TestRule;
@Category(MediumTests.class)
public class TestRpcClientLeaks {
@Rule public final TestRule timeout = CategoryBasedTimeout.builder().withTimeout(this.getClass()).
withLookingForStuckThread(true).build();
@Rule
public TestName name = new TestName();
public static class MyRpcClientImpl extends BlockingRpcClient {
public static List<Socket> savedSockets = Lists.newArrayList();
@Rule public ExpectedException thrown = ExpectedException.none();
public MyRpcClientImpl(Configuration conf) {
super(conf);
}
public MyRpcClientImpl(Configuration conf, String clusterId, SocketAddress address,
MetricsConnection metrics) {
super(conf, clusterId, address, metrics);
}
@Override
protected BlockingRpcConnection createConnection(ConnectionId remoteId) throws IOException {
return new BlockingRpcConnection(this, remoteId) {
@Override
protected synchronized void setupConnection() throws IOException {
super.setupConnection();
synchronized (savedSockets) {
savedSockets.add(socket);
}
throw new IOException("Sample exception for " +
"verifying socket closure in case of exceptions.");
}
};
}
}
private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
@BeforeClass
public static void setup() throws Exception {
UTIL.startMiniCluster();
}
@AfterClass
public static void teardown() throws Exception {
UTIL.shutdownMiniCluster();
}
public static final Log LOG = LogFactory.getLog(TestRpcClientLeaks.class);
@Test(expected=RetriesExhaustedException.class)
public void testSocketClosed() throws IOException, InterruptedException {
TableName tableName = TableName.valueOf(name.getMethodName());
UTIL.createTable(tableName, fam1).close();
Configuration conf = new Configuration(UTIL.getConfiguration());
conf.set(RpcClientFactory.CUSTOM_RPC_CLIENT_IMPL_CONF_KEY,
MyRpcClientImpl.class.getName());
conf.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 2);
Connection connection = ConnectionFactory.createConnection(conf);
Table table = connection.getTable(TableName.valueOf(name.getMethodName()));
table.get(new Get("asd".getBytes()));
connection.close();
for (Socket socket : MyRpcClientImpl.savedSockets) {
assertTrue("Socket + " + socket + " is not closed", socket.isClosed());
}
}
}