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.replication;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertFalse;
022import static org.junit.Assert.assertTrue;
023import static org.mockito.ArgumentMatchers.any;
024import static org.mockito.ArgumentMatchers.anyBoolean;
025import static org.mockito.ArgumentMatchers.anyString;
026import static org.mockito.Mockito.doAnswer;
027import static org.mockito.Mockito.spy;
028
029import java.io.IOException;
030import org.apache.hadoop.conf.Configuration;
031import org.apache.hadoop.hbase.HBaseClassTestRule;
032import org.apache.hadoop.hbase.HBaseTestingUtility;
033import org.apache.hadoop.hbase.HConstants;
034import org.apache.hadoop.hbase.client.Admin;
035import org.apache.hadoop.hbase.master.HMaster;
036import org.apache.hadoop.hbase.master.replication.ReplicationPeerManager;
037import org.apache.hadoop.hbase.testclassification.MediumTests;
038import org.apache.hadoop.hbase.testclassification.ReplicationTests;
039import org.apache.zookeeper.KeeperException;
040import org.junit.After;
041import org.junit.AfterClass;
042import org.junit.BeforeClass;
043import org.junit.ClassRule;
044import org.junit.Test;
045import org.junit.experimental.categories.Category;
046import org.mockito.invocation.InvocationOnMock;
047
048/**
049 * All the modification method will fail once in the test and should finally succeed.
050 */
051@Category({ ReplicationTests.class, MediumTests.class })
052public class TestReplicationProcedureRetry {
053
054  @ClassRule
055  public static final HBaseClassTestRule CLASS_RULE =
056      HBaseClassTestRule.forClass(TestReplicationProcedureRetry.class);
057
058  private static final HBaseTestingUtility UTIL = new HBaseTestingUtility();
059
060  @BeforeClass
061  public static void setUp() throws Exception {
062    UTIL.getConfiguration().setClass(HConstants.MASTER_IMPL, MockHMaster.class, HMaster.class);
063    UTIL.startMiniCluster(3);
064  }
065
066  @AfterClass
067  public static void tearDown() throws Exception {
068    UTIL.shutdownMiniCluster();
069  }
070
071  @After
072  public void tearDownAfterTest() throws IOException {
073    for (ReplicationPeerDescription desc : UTIL.getAdmin().listReplicationPeers()) {
074      UTIL.getAdmin().removeReplicationPeer(desc.getPeerId());
075    }
076  }
077
078  private void doTest() throws IOException {
079    Admin admin = UTIL.getAdmin();
080    String peerId = "1";
081    ReplicationPeerConfig peerConfig = ReplicationPeerConfig.newBuilder()
082        .setClusterKey("localhost:" + UTIL.getZkCluster().getClientPort() + ":/hbase2").build();
083    admin.addReplicationPeer(peerId, peerConfig, true);
084
085    assertEquals(peerConfig.getClusterKey(),
086      admin.getReplicationPeerConfig(peerId).getClusterKey());
087    ReplicationPeerConfig newPeerConfig =
088        ReplicationPeerConfig.newBuilder(peerConfig).setBandwidth(123456).build();
089    admin.updateReplicationPeerConfig(peerId, newPeerConfig);
090    assertEquals(newPeerConfig.getBandwidth(),
091      admin.getReplicationPeerConfig(peerId).getBandwidth());
092
093    admin.disableReplicationPeer(peerId);
094    assertFalse(admin.listReplicationPeers().get(0).isEnabled());
095
096    admin.enableReplicationPeer(peerId);
097    assertTrue(admin.listReplicationPeers().get(0).isEnabled());
098
099    admin.removeReplicationPeer(peerId);
100    assertTrue(admin.listReplicationPeers().isEmpty());
101
102    // make sure that we have run into the mocked method
103    MockHMaster master = (MockHMaster) UTIL.getHBaseCluster().getMaster();
104    assertTrue(master.addPeerCalled);
105    assertTrue(master.removePeerCalled);
106    assertTrue(master.updatePeerConfigCalled);
107    assertTrue(master.enablePeerCalled);
108    assertTrue(master.disablePeerCalled);
109  }
110
111  @Test
112  public void testErrorBeforeUpdate() throws IOException, ReplicationException {
113    ((MockHMaster) UTIL.getHBaseCluster().getMaster()).reset(true);
114    doTest();
115  }
116
117  @Test
118  public void testErrorAfterUpdate() throws IOException, ReplicationException {
119    ((MockHMaster) UTIL.getHBaseCluster().getMaster()).reset(false);
120    doTest();
121  }
122
123  public static final class MockHMaster extends HMaster {
124
125    volatile boolean addPeerCalled;
126
127    volatile boolean removePeerCalled;
128
129    volatile boolean updatePeerConfigCalled;
130
131    volatile boolean enablePeerCalled;
132
133    volatile boolean disablePeerCalled;
134
135    private ReplicationPeerManager manager;
136
137    public MockHMaster(Configuration conf) throws IOException, KeeperException {
138      super(conf);
139    }
140
141    private Object invokeWithError(InvocationOnMock invocation, boolean errorBeforeUpdate)
142        throws Throwable {
143      if (errorBeforeUpdate) {
144        throw new ReplicationException("mock error before update");
145      }
146      invocation.callRealMethod();
147      throw new ReplicationException("mock error after update");
148    }
149
150    public void reset(boolean errorBeforeUpdate) throws ReplicationException {
151      addPeerCalled = false;
152      removePeerCalled = false;
153      updatePeerConfigCalled = false;
154      enablePeerCalled = false;
155      disablePeerCalled = false;
156      ReplicationPeerManager m = super.getReplicationPeerManager();
157      manager = spy(m);
158      doAnswer(invocation -> {
159        if (!addPeerCalled) {
160          addPeerCalled = true;
161          return invokeWithError(invocation, errorBeforeUpdate);
162        } else {
163          return invocation.callRealMethod();
164        }
165      }).when(manager).addPeer(anyString(), any(ReplicationPeerConfig.class), anyBoolean());
166      doAnswer(invocation -> {
167        if (!removePeerCalled) {
168          removePeerCalled = true;
169          return invokeWithError(invocation, errorBeforeUpdate);
170        } else {
171          return invocation.callRealMethod();
172        }
173      }).when(manager).removePeer(anyString());
174      doAnswer(invocation -> {
175        if (!updatePeerConfigCalled) {
176          updatePeerConfigCalled = true;
177          return invokeWithError(invocation, errorBeforeUpdate);
178        } else {
179          return invocation.callRealMethod();
180        }
181      }).when(manager).updatePeerConfig(anyString(), any(ReplicationPeerConfig.class));
182      doAnswer(invocation -> {
183        if (!enablePeerCalled) {
184          enablePeerCalled = true;
185          return invokeWithError(invocation, errorBeforeUpdate);
186        } else {
187          return invocation.callRealMethod();
188        }
189      }).when(manager).enablePeer(anyString());
190      doAnswer(invocation -> {
191        if (!disablePeerCalled) {
192          disablePeerCalled = true;
193          return invokeWithError(invocation, errorBeforeUpdate);
194        } else {
195          return invocation.callRealMethod();
196        }
197      }).when(manager).disablePeer(anyString());
198    }
199
200    @Override
201    public ReplicationPeerManager getReplicationPeerManager() {
202      return manager;
203    }
204  }
205}