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1   /**
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *     http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  
20  package org.apache.hadoop.hbase.regionserver.wal;
21  
22  import org.apache.hadoop.hbase.testclassification.SmallTests;
23  import org.junit.Test;
24  import org.junit.experimental.categories.Category;
25  
26  import java.util.concurrent.TimeUnit;
27  
28  import static org.mockito.Mockito.mock;
29  import static org.mockito.Mockito.times;
30  import static org.mockito.Mockito.verify;
31  
32  @Category(SmallTests.class)
33  public class TestMetricsWAL {
34    @Test
35    public void testLogRollRequested() throws Exception {
36      MetricsWALSource source = mock(MetricsWALSourceImpl.class);
37      MetricsWAL metricsWAL = new MetricsWAL(source);
38      metricsWAL.logRollRequested(false);
39      metricsWAL.logRollRequested(true);
40  
41      // Log roll was requested twice
42      verify(source, times(2)).incrementLogRollRequested();
43      // One was because of low replication on the hlog.
44      verify(source, times(1)).incrementLowReplicationLogRoll();
45    }
46  
47    @Test
48    public void testPostSync() throws Exception {
49      long nanos = TimeUnit.MILLISECONDS.toNanos(145);
50      MetricsWALSource source = mock(MetricsWALSourceImpl.class);
51      MetricsWAL metricsWAL = new MetricsWAL(source);
52      metricsWAL.postSync(nanos, 1);
53      verify(source, times(1)).incrementSyncTime(145);
54    }
55  }