| /** |
| * 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.hadoop.hbase.ipc; |
| |
| import static org.apache.hadoop.hbase.HBaseTestingUtility.fam1; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.IOException; |
| import java.net.Socket; |
| import java.net.SocketAddress; |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| 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.apache.hadoop.hbase.util.Bytes; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.ClassRule; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.junit.rules.TestName; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @Category(MediumTests.class) |
| public class TestRpcClientLeaks { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestRpcClientLeaks.class); |
| |
| @Rule |
| public TestName name = new TestName(); |
| |
| private static BlockingQueue<Socket> SAVED_SOCKETS = new LinkedBlockingQueue<>(); |
| |
| public static class MyRpcClientImpl extends BlockingRpcClient { |
| |
| // Exceptions thrown only when this is set to false. |
| private static boolean throwException = false; |
| |
| 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(); |
| if (throwException) { |
| SAVED_SOCKETS.add(socket); |
| throw new IOException( |
| "Sample exception for verifying socket closure in case of exceptions."); |
| } |
| } |
| }; |
| } |
| |
| public static void enableThrowExceptions() { |
| throwException = true; |
| } |
| } |
| |
| 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 Logger LOG = LoggerFactory.getLogger(TestRpcClientLeaks.class); |
| |
| @Test |
| 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); |
| try (Connection connection = ConnectionFactory.createConnection(conf); |
| Table table = connection.getTable(TableName.valueOf(name.getMethodName()))) { |
| MyRpcClientImpl.enableThrowExceptions(); |
| table.get(new Get(Bytes.toBytes("asd"))); |
| fail("Should fail because the injected error"); |
| } catch (RetriesExhaustedException e) { |
| // expected |
| } |
| for (Socket socket : SAVED_SOCKETS) { |
| assertTrue("Socket " + socket + " is not closed", socket.isClosed()); |
| } |
| } |
| } |