hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestConnectionRegistryLeak.java

   1 /**
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase.client;
  19
  20 import static org.junit.Assert.assertEquals;
  21 import static org.junit.Assert.assertTrue;
  22 import static org.junit.Assert.fail;
  23
  24 import java.io.IOException;
  25 import java.util.ArrayList;
  26 import java.util.List;
  27 import java.util.concurrent.CompletableFuture;
  28 import java.util.concurrent.ExecutionException;
  29 import org.apache.hadoop.conf.Configuration;
  30 import org.apache.hadoop.hbase.HBaseClassTestRule;
  31 import org.apache.hadoop.hbase.HBaseConfiguration;
  32 import org.apache.hadoop.hbase.HConstants;
  33 import org.apache.hadoop.hbase.testclassification.ClientTests;
  34 import org.apache.hadoop.hbase.testclassification.SmallTests;
  35 import org.apache.hadoop.hbase.util.FutureUtils;
  36 import org.junit.BeforeClass;
  37 import org.junit.ClassRule;
  38 import org.junit.Test;
  39 import org.junit.experimental.categories.Category;
  40
  41 @Category({ ClientTests.class, SmallTests.class })
  42 public class TestConnectionRegistryLeak {
  43
  44   @ClassRule
  45   public static final HBaseClassTestRule CLASS_RULE =
  46     HBaseClassTestRule.forClass(TestConnectionRegistryLeak.class);
  47
  48   public static final class ConnectionRegistryForTest extends DoNothingConnectionRegistry {
  49
  50     private boolean closed = false;
  51
  52     public ConnectionRegistryForTest(Configuration conf) {
  53       super(conf);
  54       CREATED.add(this);
  55     }
  56
  57     @Override
  58     public CompletableFuture<String> getClusterId() {
  59       return FutureUtils.failedFuture(new IOException("inject error"));
  60     }
  61
  62     @Override
  63     public void close() {
  64       closed = true;
  65     }
  66   }
  67
  68   private static final List<ConnectionRegistryForTest> CREATED = new ArrayList<>();
  69
  70   private static Configuration CONF = HBaseConfiguration.create();
  71
  72   @BeforeClass
  73   public static void setUp() {
  74     CONF.setClass(HConstants.CLIENT_CONNECTION_REGISTRY_IMPL_CONF_KEY,
  75         ConnectionRegistryForTest.class, ConnectionRegistry.class);
  76   }
  77
  78   @Test
  79   public void test() throws InterruptedException {
  80     for (int i = 0; i < 10; i++) {
  81       try {
  82         ConnectionFactory.createAsyncConnection(CONF).get();
  83         fail();
  84       } catch (ExecutionException e) {
  85         // expected
  86       }
  87     }
  88     assertEquals(10, CREATED.size());
  89     CREATED.forEach(r -> assertTrue(r.closed));
  90   }
  91 }