/**
* Copyright The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package com.alibaba.wasp.fserver.metrics;
import com.alibaba.wasp.metrics.BaseSource;
import org.apache.hadoop.metrics2.Metric;
import org.apache.hadoop.metrics2.MetricsBuilder;
import org.apache.hadoop.metrics2.MetricsRecordBuilder;
import org.apache.hadoop.metrics2.MetricsSource;
import org.apache.hadoop.metrics2.MetricsTag;
import java.util.HashMap;
import java.util.Map;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
/** Interface of a class to make assertions about metrics values. */
public class MetricsAssertHelperImpl implements MetricsAssertHelper {
private Map<String, String> tags = new HashMap<String, String>();
private Map<String, Number> gauges = new HashMap<String, Number>();
private Map<String, Long> counters = new HashMap<String, Long>();
public class MockMetricsBuilder implements MetricsBuilder {
@Override
public MetricsRecordBuilder addRecord(String s) {
return new MockRecordBuilder();
}
}
public class MockRecordBuilder extends MetricsRecordBuilder {
@Override
public MetricsRecordBuilder tag(String s, String s1, String s2) {
tags.put(canonicalizeMetricName(s), s2);
return this;
}
@Override
public MetricsRecordBuilder add(MetricsTag metricsTag) {
tags.put(canonicalizeMetricName(metricsTag.name()), metricsTag.value());
return this;
}
@Override
public MetricsRecordBuilder setContext(String s) {
return this;
}
@Override
public MetricsRecordBuilder addCounter(String s, String s1, int i) {
counters.put(canonicalizeMetricName(s), Long.valueOf(i));
return this;
}
@Override
public MetricsRecordBuilder addCounter(String s, String s1, long l) {
counters.put(canonicalizeMetricName(s), Long.valueOf(l));
return this;
}
@Override
public MetricsRecordBuilder addGauge(String s, String s1, int i) {
gauges.put(canonicalizeMetricName(s), Long.valueOf(i));
return this;
}
@Override
public MetricsRecordBuilder addGauge(String s, String s1, long l) {
gauges.put(canonicalizeMetricName(s), Long.valueOf(l));
return this;
}
@Override
public MetricsRecordBuilder addGauge(String s, String s1, float v) {
gauges.put(canonicalizeMetricName(s), Double.valueOf(v));
return this;
}
@Override
public MetricsRecordBuilder addGauge(String s, String s1, double v) {
gauges.put(canonicalizeMetricName(s), Double.valueOf(v));
return this;
}
@Override
public MetricsRecordBuilder add(Metric metric) {
gauges.put(canonicalizeMetricName(metric.name()), metric.value());
return this;
}
}
@Override
public void assertTag(String name, String expected, BaseSource source) {
getMetrics(source);
String cName = canonicalizeMetricName(name);
assertEquals("Tags should be equal", expected, tags.get(cName));
}
@Override
public void assertGauge(String name, long expected, BaseSource source) {
long found = getGaugeLong(name, source);
assertEquals("Metrics Should be equal", (long) Long.valueOf(expected),
found);
}
@Override
public void assertGaugeGt(String name, long expected, BaseSource source) {
double found = getGaugeDouble(name, source);
assertTrue(name + " (" + found + ") should be greater than " + expected,
found > expected);
}
@Override
public void assertGaugeLt(String name, long expected, BaseSource source) {
double found = getGaugeDouble(name, source);
assertTrue(name + "(" + found + ") should be less than " + expected,
found < expected);
}
@Override
public void assertGauge(String name, double expected, BaseSource source) {
double found = getGaugeDouble(name, source);
assertEquals("Metrics Should be equal", (double) Double.valueOf(expected),
found, 0.01);
}
@Override
public void assertGaugeGt(String name, double expected, BaseSource source) {
double found = getGaugeDouble(name, source);
assertTrue(name + "(" + found + ") should be greater than " + expected,
found > expected);
}
@Override
public void assertGaugeLt(String name, double expected, BaseSource source) {
double found = getGaugeDouble(name, source);
assertTrue(name + "(" + found + ") should be less than " + expected,
found < expected);
}
@Override
public void assertCounter(String name, long expected, BaseSource source) {
long found = getCounter(name, source);
assertEquals("Metrics Counters should be equal",
(long) Long.valueOf(expected), found);
}
@Override
public void assertCounterGt(String name, long expected, BaseSource source) {
long found = getCounter(name, source);
assertTrue(name + " (" + found + ") should be greater than " + expected,
found > expected);
}
@Override
public void assertCounterLt(String name, long expected, BaseSource source) {
long found = getCounter(name, source);
assertTrue(name + "(" + found + ") should be less than " + expected,
found < expected);
}
@Override
public long getCounter(String name, BaseSource source) {
getMetrics(source);
String cName = canonicalizeMetricName(name);
assertNotNull("Should get counter " + cName + " but did not",
counters.get(cName));
return counters.get(cName).longValue();
}
@Override
public double getGaugeDouble(String name, BaseSource source) {
getMetrics(source);
String cName = canonicalizeMetricName(name);
assertNotNull("Should get gauge " + cName + " but did not",
gauges.get(cName));
return gauges.get(cName).doubleValue();
}
@Override
public long getGaugeLong(String name, BaseSource source) {
getMetrics(source);
String cName = canonicalizeMetricName(name);
assertNotNull("Should get gauge " + cName + " but did not",
gauges.get(cName));
return gauges.get(cName).longValue();
}
private void reset() {
tags.clear();
gauges.clear();
counters.clear();
}
private void getMetrics(BaseSource source) {
reset();
if (!(source instanceof MetricsSource)) {
assertTrue("The Source passed must be a MetricsSource", false);
}
MetricsSource impl = (MetricsSource) source;
impl.getMetrics(new MockMetricsBuilder(), true);
}
private String canonicalizeMetricName(String in) {
return in.toLowerCase().replaceAll("[^A-Za-z0-9 ]", "");
}
}