| /* |
| * 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 org.apache.hadoop.hbase.metrics.impl; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.Map; |
| import java.util.Optional; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.metrics.Counter; |
| import org.apache.hadoop.hbase.metrics.Gauge; |
| import org.apache.hadoop.hbase.metrics.Meter; |
| import org.apache.hadoop.hbase.metrics.Metric; |
| import org.apache.hadoop.hbase.metrics.MetricRegistryInfo; |
| import org.apache.hadoop.hbase.metrics.Timer; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.junit.Before; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category(SmallTests.class) |
| public class TestMetricRegistryImpl { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestMetricRegistryImpl.class); |
| |
| private MetricRegistryInfo info; |
| private MetricRegistryImpl registry; |
| |
| @Before |
| public void setUp() { |
| info = new MetricRegistryInfo("foo", "bar", "baz", "foobar", false); |
| registry = new MetricRegistryImpl(info); |
| } |
| |
| @Test |
| public void testCounter() { |
| Counter counter = registry.counter("mycounter"); |
| assertNotNull(counter); |
| counter.increment(42L); |
| Optional<Metric> metric = registry.get("mycounter"); |
| assertTrue(metric.isPresent()); |
| assertEquals(42L, (long) ((Counter) metric.get()).getCount()); |
| } |
| |
| @Test |
| public void testRegisterGauge() { |
| registry.register("mygauge", new Gauge<Long>() { |
| @Override |
| public Long getValue() { |
| return 42L; |
| } |
| }); |
| Optional<Metric> metric = registry.get("mygauge"); |
| assertTrue(metric.isPresent()); |
| assertEquals(42L, (long) ((Gauge<Long>) metric.get()).getValue()); |
| } |
| |
| @Test |
| public void testRegisterGaugeLambda() { |
| // register a Gauge using lambda expression |
| registry.register("gaugeLambda", () -> 42L); |
| Optional<Metric> metric = registry.get("gaugeLambda"); |
| assertTrue(metric.isPresent()); |
| assertEquals(42L, (long) ((Gauge<Long>) metric.get()).getValue()); |
| } |
| |
| @Test |
| public void testTimer() { |
| Timer timer = registry.timer("mytimer"); |
| assertNotNull(timer); |
| timer.updateNanos(100); |
| } |
| |
| @Test |
| public void testMeter() { |
| Meter meter = registry.meter("mymeter"); |
| assertNotNull(meter); |
| meter.mark(); |
| } |
| |
| @Test |
| public void testRegister() { |
| CounterImpl counter = new CounterImpl(); |
| registry.register("mycounter", counter); |
| counter.increment(42L); |
| |
| Optional<Metric> metric = registry.get("mycounter"); |
| assertTrue(metric.isPresent()); |
| assertEquals(42L, (long) ((Counter) metric.get()).getCount()); |
| } |
| |
| @Test |
| public void testDoubleRegister() { |
| Gauge g1 = registry.register("mygauge", () -> 42L); |
| Gauge g2 = registry.register("mygauge", () -> 52L); |
| |
| // second gauge is ignored if it exists |
| assertEquals(g1, g2); |
| |
| Optional<Metric> metric = registry.get("mygauge"); |
| assertTrue(metric.isPresent()); |
| assertEquals(42L, (long) ((Gauge<Long>) metric.get()).getValue()); |
| |
| Counter c1 = registry.counter("mycounter"); |
| Counter c2 = registry.counter("mycounter"); |
| |
| assertEquals(c1, c2); |
| } |
| |
| @Test |
| public void testGetMetrics() { |
| CounterImpl counter = new CounterImpl(); |
| registry.register("mycounter", counter); |
| Gauge gauge = registry.register("mygauge", () -> 42L); |
| Timer timer = registry.timer("mytimer"); |
| |
| Map<String, Metric> metrics = registry.getMetrics(); |
| assertEquals(3, metrics.size()); |
| |
| assertEquals(counter, metrics.get("mycounter")); |
| assertEquals(gauge, metrics.get("mygauge")); |
| assertEquals(timer, metrics.get("mytimer")); |
| } |
| } |