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*
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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package org.apache.hadoop.hbase.metrics;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.management.AttributeNotFoundException;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanException;
import javax.management.MBeanInfo;
import javax.management.ReflectionException;
import com.yammer.metrics.stats.Snapshot;
import org.apache.hadoop.hbase.SmallTests;
import org.apache.hadoop.hbase.metrics.histogram.MetricsHistogram;
import org.apache.hadoop.metrics.MetricsContext;
import org.apache.hadoop.metrics.MetricsRecord;
import org.apache.hadoop.metrics.MetricsUtil;
import org.apache.hadoop.metrics.util.MetricsIntValue;
import org.apache.hadoop.metrics.util.MetricsRegistry;
import org.apache.hadoop.metrics.util.MetricsTimeVaryingRate;
import junit.framework.TestCase;
import org.junit.experimental.categories.Category;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
@Deprecated
@Category(SmallTests.class)
public class TestMetricsMBeanBase extends TestCase {
private class TestStatistics extends MetricsMBeanBase {
public TestStatistics(MetricsRegistry registry) {
super(registry, "TestStatistics");
}
}
private MetricsRegistry registry;
private MetricsRecord metricsRecord;
private TestStatistics stats;
private MetricsRate metricsRate;
private MetricsIntValue intValue;
private MetricsTimeVaryingRate varyRate;
public void setUp() {
this.registry = new MetricsRegistry();
this.metricsRate = new MetricsRate("metricsRate", registry, "test");
this.intValue = new MetricsIntValue("intValue", registry, "test");
this.varyRate = new MetricsTimeVaryingRate("varyRate", registry, "test");
this.stats = new TestStatistics(registry);
MetricsContext context = MetricsUtil.getContext("hbase");
this.metricsRecord = MetricsUtil.createRecord(context, "test");
this.metricsRecord.setTag("TestStatistics", "test");
//context.registerUpdater(this);
}
public void tearDown() {
}
public void testGetAttribute() throws Exception {
this.metricsRate.inc(2);
Thread.sleep(1000);
this.metricsRate.pushMetric(this.metricsRecord);
this.intValue.set(5);
this.intValue.pushMetric(this.metricsRecord);
this.varyRate.inc(10);
this.varyRate.inc(50);
this.varyRate.pushMetric(this.metricsRecord);
assertEquals( 2.0, (Float)this.stats.getAttribute("metricsRate"), 0.005 );
assertEquals( 5, this.stats.getAttribute("intValue") );
assertEquals( 10L, this.stats.getAttribute("varyRateMinTime") );
assertEquals( 50L, this.stats.getAttribute("varyRateMaxTime") );
assertEquals( 30L, this.stats.getAttribute("varyRateAvgTime") );
assertEquals( 2, this.stats.getAttribute("varyRateNumOps") );
}
public void testGetMBeanInfo() {
MBeanInfo info = this.stats.getMBeanInfo();
MBeanAttributeInfo[] attributes = info.getAttributes();
assertEquals( 6, attributes.length );
Map<String,MBeanAttributeInfo> attributeByName =
new HashMap<String,MBeanAttributeInfo>(attributes.length);
for (MBeanAttributeInfo attr : attributes)
attributeByName.put(attr.getName(), attr);
assertAttribute( attributeByName.get("metricsRate"),
"metricsRate", "java.lang.Float", "test");
assertAttribute( attributeByName.get("intValue"),
"intValue", "java.lang.Integer", "test");
assertAttribute( attributeByName.get("varyRateMinTime"),
"varyRateMinTime", "java.lang.Long", "test");
assertAttribute( attributeByName.get("varyRateMaxTime"),
"varyRateMaxTime", "java.lang.Long", "test");
assertAttribute( attributeByName.get("varyRateAvgTime"),
"varyRateAvgTime", "java.lang.Long", "test");
assertAttribute( attributeByName.get("varyRateNumOps"),
"varyRateNumOps", "java.lang.Integer", "test");
}
public void testMetricsMBeanBaseHistogram()
throws ReflectionException, AttributeNotFoundException, MBeanException {
MetricsRegistry mr = new MetricsRegistry();
MetricsHistogram histo = mock(MetricsHistogram.class);
Snapshot snap = mock(Snapshot.class);
//Set up the mocks
String histoName = "MockHisto";
when(histo.getName()).thenReturn(histoName);
when(histo.getCount()).thenReturn(20l);
when(histo.getMin()).thenReturn(1l);
when(histo.getMax()).thenReturn(999l);
when(histo.getMean()).thenReturn(500.2);
when(histo.getStdDev()).thenReturn(1.2);
when(histo.getSnapshot()).thenReturn(snap);
when(snap.getMedian()).thenReturn(490.0);
when(snap.get75thPercentile()).thenReturn(550.0);
when(snap.get95thPercentile()).thenReturn(900.0);
when(snap.get99thPercentile()).thenReturn(990.0);
mr.add("myTestHisto", histo);
MetricsMBeanBase mBeanBase = new MetricsMBeanBase(mr, "test");
assertEquals(new Long(20), mBeanBase
.getAttribute(histoName + MetricsHistogram.NUM_OPS_METRIC_NAME));
assertEquals(new Long(1), mBeanBase
.getAttribute(histoName + MetricsHistogram.MIN_METRIC_NAME));
assertEquals(new Long(999), mBeanBase
.getAttribute(histoName + MetricsHistogram.MAX_METRIC_NAME));
assertEquals(new Float(500.2), mBeanBase
.getAttribute(histoName + MetricsHistogram.MEAN_METRIC_NAME));
assertEquals(new Float(1.2), mBeanBase
.getAttribute(histoName + MetricsHistogram.STD_DEV_METRIC_NAME));
assertEquals(new Float(490.0), mBeanBase
.getAttribute(histoName + MetricsHistogram.MEDIAN_METRIC_NAME));
assertEquals(new Float(550.0), mBeanBase
.getAttribute(histoName + MetricsHistogram.SEVENTY_FIFTH_PERCENTILE_METRIC_NAME));
assertEquals(new Float(900.0), mBeanBase
.getAttribute(histoName + MetricsHistogram.NINETY_FIFTH_PERCENTILE_METRIC_NAME));
assertEquals(new Float(990.0), mBeanBase
.getAttribute(histoName + MetricsHistogram.NINETY_NINETH_PERCENTILE_METRIC_NAME));
}
protected void assertAttribute(MBeanAttributeInfo attr, String name,
String type, String description) {
assertEquals(attr.getName(), name);
assertEquals(attr.getType(), type);
assertEquals(attr.getDescription(), description);
}
}