001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.client;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertTrue;
022import static org.junit.Assert.fail;
023
024import java.io.IOException;
025import java.util.ArrayList;
026import java.util.List;
027import java.util.concurrent.CompletableFuture;
028import java.util.concurrent.ExecutionException;
029import org.apache.hadoop.conf.Configuration;
030import org.apache.hadoop.hbase.HBaseClassTestRule;
031import org.apache.hadoop.hbase.HBaseConfiguration;
032import org.apache.hadoop.hbase.HConstants;
033import org.apache.hadoop.hbase.security.User;
034import org.apache.hadoop.hbase.testclassification.ClientTests;
035import org.apache.hadoop.hbase.testclassification.SmallTests;
036import org.apache.hadoop.hbase.util.FutureUtils;
037import org.junit.BeforeClass;
038import org.junit.ClassRule;
039import org.junit.Test;
040import org.junit.experimental.categories.Category;
041
042@Category({ ClientTests.class, SmallTests.class })
043public class TestConnectionRegistryLeak {
044
045  @ClassRule
046  public static final HBaseClassTestRule CLASS_RULE =
047    HBaseClassTestRule.forClass(TestConnectionRegistryLeak.class);
048
049  public static final class ConnectionRegistryForTest extends DoNothingConnectionRegistry {
050
051    private boolean closed = false;
052
053    public ConnectionRegistryForTest(Configuration conf, User user) {
054      super(conf, user);
055      CREATED.add(this);
056    }
057
058    @Override
059    public CompletableFuture<String> getClusterId() {
060      return FutureUtils.failedFuture(new IOException("inject error"));
061    }
062
063    @Override
064    public void close() {
065      closed = true;
066    }
067  }
068
069  private static final List<ConnectionRegistryForTest> CREATED = new ArrayList<>();
070
071  private static Configuration CONF = HBaseConfiguration.create();
072
073  @BeforeClass
074  public static void setUp() {
075    CONF.setClass(HConstants.CLIENT_CONNECTION_REGISTRY_IMPL_CONF_KEY,
076      ConnectionRegistryForTest.class, ConnectionRegistry.class);
077  }
078
079  @Test
080  public void test() throws InterruptedException {
081    for (int i = 0; i < 10; i++) {
082      try {
083        ConnectionFactory.createAsyncConnection(CONF).get();
084        fail();
085      } catch (ExecutionException e) {
086        // expected
087      }
088    }
089    assertEquals(10, CREATED.size());
090    CREATED.forEach(r -> assertTrue(r.closed));
091  }
092}