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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  
19  package org.apache.hadoop.hbase.io;
20  
21  import org.apache.hadoop.hbase.CompatibilityFactory;
22  import org.apache.hadoop.hbase.test.MetricsAssertHelper;
23  import org.apache.hadoop.hbase.testclassification.SmallTests;
24  import org.junit.Test;
25  import org.junit.experimental.categories.Category;
26  
27  @Category(SmallTests.class)
28  public class TestMetricsIO {
29  
30    public MetricsAssertHelper HELPER = CompatibilityFactory.getInstance(MetricsAssertHelper.class);
31  
32    @Test
33    public void testMetrics() {
34      MetricsIO metrics = new MetricsIO(new MetricsIOWrapper() {
35        @Override
36        public long getChecksumFailures() { return 40; }
37      });
38  
39      metrics.updateFsReadTime(100);
40      metrics.updateFsReadTime(200);
41  
42      metrics.updateFsPreadTime(300);
43  
44      metrics.updateFsWriteTime(400);
45      metrics.updateFsWriteTime(500);
46      metrics.updateFsWriteTime(600);
47  
48      HELPER.assertCounter("fsChecksumFailureCount", 40, metrics.getMetricsSource());
49  
50      HELPER.assertCounter("fsReadTime_numOps", 2, metrics.getMetricsSource());
51      HELPER.assertCounter("fsPReadTime_numOps", 1, metrics.getMetricsSource());
52      HELPER.assertCounter("fsWriteTime_numOps", 3, metrics.getMetricsSource());
53    }
54  }