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.rest.client;
019
020import static org.junit.Assert.assertTrue;
021import static org.junit.Assert.fail;
022import static org.mockito.Matchers.any;
023import static org.mockito.Matchers.anyString;
024import static org.mockito.Mockito.mock;
025import static org.mockito.Mockito.times;
026import static org.mockito.Mockito.verify;
027import static org.mockito.Mockito.when;
028
029import java.io.IOException;
030import java.util.regex.Pattern;
031import org.apache.hadoop.conf.Configuration;
032import org.apache.hadoop.hbase.HBaseClassTestRule;
033import org.apache.hadoop.hbase.HBaseTestingUtility;
034import org.apache.hadoop.hbase.HTableDescriptor;
035import org.apache.hadoop.hbase.TableName;
036import org.apache.hadoop.hbase.testclassification.RestTests;
037import org.apache.hadoop.hbase.testclassification.SmallTests;
038import org.apache.hadoop.hbase.util.Bytes;
039import org.junit.Before;
040import org.junit.ClassRule;
041import org.junit.Test;
042import org.junit.experimental.categories.Category;
043
044/**
045 * Tests {@link RemoteAdmin} retries.
046 */
047@Category({RestTests.class, SmallTests.class})
048public class TestRemoteAdminRetries {
049
050  @ClassRule
051  public static final HBaseClassTestRule CLASS_RULE =
052      HBaseClassTestRule.forClass(TestRemoteAdminRetries.class);
053
054  private static final int SLEEP_TIME = 50;
055  private static final int RETRIES = 3;
056  private static final long MAX_TIME = SLEEP_TIME * (RETRIES - 1);
057
058  private static final HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
059
060  private RemoteAdmin remoteAdmin;
061  private Client client;
062
063  @Before
064  public void setup() throws Exception {
065    client = mock(Client.class);
066    Response response = new Response(509);
067    when(client.get(anyString(), anyString())).thenReturn(response);
068    when(client.delete(anyString())).thenReturn(response);
069    when(client.put(anyString(), anyString(), any())).thenReturn(response);
070    when(client.post(anyString(), anyString(), any())).thenReturn(response);
071    Configuration configuration = TEST_UTIL.getConfiguration();
072
073    configuration.setInt("hbase.rest.client.max.retries", RETRIES);
074    configuration.setInt("hbase.rest.client.sleep", SLEEP_TIME);
075
076    remoteAdmin = new RemoteAdmin(client, TEST_UTIL.getConfiguration(), "MyTable");
077  }
078
079  @Test
080  public void testFailingGetRestVersion() throws Exception  {
081    testTimedOutGetCall(new CallExecutor() {
082      @Override
083      public void run() throws Exception {
084        remoteAdmin.getRestVersion();
085      }
086    });
087  }
088
089  @Test
090  public void testFailingGetClusterStatus() throws Exception  {
091    testTimedOutGetCall(new CallExecutor() {
092      @Override
093      public void run() throws Exception {
094        remoteAdmin.getClusterStatus();
095      }
096    });
097  }
098
099  @Test
100  public void testFailingGetClusterVersion() throws Exception {
101    testTimedOutGetCall(new CallExecutor() {
102      @Override
103      public void run() throws Exception {
104        remoteAdmin.getClusterVersion();
105      }
106    });
107  }
108
109  @Test
110  public void testFailingGetTableAvailable() throws Exception {
111    testTimedOutCall(new CallExecutor() {
112      @Override
113      public void run() throws Exception {
114        remoteAdmin.isTableAvailable(Bytes.toBytes("TestTable"));
115      }
116    });
117  }
118
119  @Test
120  @SuppressWarnings("deprecation")
121  public void testFailingCreateTable() throws Exception {
122    testTimedOutCall(new CallExecutor() {
123      @Override
124      public void run() throws Exception {
125        remoteAdmin.createTable(new HTableDescriptor(TableName.valueOf("TestTable")));
126      }
127    });
128    verify(client, times(RETRIES)).put(anyString(), anyString(), any());
129  }
130
131  @Test
132  public void testFailingDeleteTable() throws Exception {
133    testTimedOutCall(new CallExecutor() {
134      @Override
135      public void run() throws Exception {
136        remoteAdmin.deleteTable("TestTable");
137      }
138    });
139    verify(client, times(RETRIES)).delete(anyString());
140  }
141
142  @Test
143  public void testFailingGetTableList() throws Exception {
144    testTimedOutGetCall(new CallExecutor() {
145      @Override
146      public void run() throws Exception {
147        remoteAdmin.getTableList();
148      }
149    });
150  }
151
152  private void testTimedOutGetCall(CallExecutor callExecutor) throws Exception {
153    testTimedOutCall(callExecutor);
154    verify(client, times(RETRIES)).get(anyString(), anyString());
155  }
156
157  private void testTimedOutCall(CallExecutor callExecutor) throws Exception {
158    long start = System.currentTimeMillis();
159    try {
160      callExecutor.run();
161      fail("should be timeout exception!");
162    } catch (IOException e) {
163      assertTrue(Pattern.matches(".*MyTable.*timed out", e.toString()));
164    }
165    assertTrue((System.currentTimeMillis() - start) > MAX_TIME);
166  }
167
168  private static interface CallExecutor {
169    void run() throws Exception;
170  }
171
172}