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.io;
019
020import org.apache.hadoop.hbase.CompatibilityFactory;
021import org.apache.hadoop.hbase.HBaseClassTestRule;
022import org.apache.hadoop.hbase.test.MetricsAssertHelper;
023import org.apache.hadoop.hbase.testclassification.SmallTests;
024import org.junit.ClassRule;
025import org.junit.Test;
026import org.junit.experimental.categories.Category;
027
028@Category(SmallTests.class)
029public class TestMetricsIO {
030
031  @ClassRule
032  public static final HBaseClassTestRule CLASS_RULE =
033      HBaseClassTestRule.forClass(TestMetricsIO.class);
034
035  public MetricsAssertHelper HELPER = CompatibilityFactory.getInstance(MetricsAssertHelper.class);
036
037  @Test
038  public void testMetrics() {
039    MetricsIO metrics = new MetricsIO(new MetricsIOWrapper() {
040      @Override
041      public long getChecksumFailures() { return 40; }
042    });
043
044    metrics.updateFsReadTime(100);
045    metrics.updateFsReadTime(200);
046
047    metrics.updateFsPreadTime(300);
048
049    metrics.updateFsWriteTime(400);
050    metrics.updateFsWriteTime(500);
051    metrics.updateFsWriteTime(600);
052
053    HELPER.assertCounter("fsChecksumFailureCount", 40, metrics.getMetricsSource());
054
055    HELPER.assertCounter("fsReadTime_numOps", 2, metrics.getMetricsSource());
056    HELPER.assertCounter("fsPReadTime_numOps", 1, metrics.getMetricsSource());
057    HELPER.assertCounter("fsWriteTime_numOps", 3, metrics.getMetricsSource());
058  }
059}