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