| /* |
| * 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.jackrabbit.oak.cache.impl; |
| |
| import java.util.Map; |
| import java.util.Random; |
| |
| import com.codahale.metrics.Counter; |
| import com.codahale.metrics.MetricRegistry; |
| |
| import org.apache.jackrabbit.oak.api.jmx.CacheStatsMBean; |
| import org.apache.jackrabbit.oak.cache.AbstractCacheStats; |
| import org.jetbrains.annotations.NotNull; |
| import org.junit.Test; |
| |
| import static org.apache.jackrabbit.oak.cache.impl.CacheStatsMetrics.ELEMENT; |
| import static org.apache.jackrabbit.oak.cache.impl.CacheStatsMetrics.EVICTION; |
| import static org.apache.jackrabbit.oak.cache.impl.CacheStatsMetrics.HIT; |
| import static org.apache.jackrabbit.oak.cache.impl.CacheStatsMetrics.MISS; |
| import static org.apache.jackrabbit.oak.cache.impl.CacheStatsMetrics.REQUEST; |
| import static org.apache.jackrabbit.oak.cache.impl.CacheStatsMetrics.metricName; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| |
| public class CacheStatsMetricsTest { |
| |
| private static final Random RANDOM = new Random(); |
| private static final long HIT_COUNT = RANDOM.nextInt(Integer.MAX_VALUE); |
| private static final long MISS_COUNT = RANDOM.nextInt(Integer.MAX_VALUE); |
| private static final long REQUEST_COUNT = HIT_COUNT + MISS_COUNT; |
| private static final long EVICTION_COUNT = RANDOM.nextInt(Integer.MAX_VALUE); |
| private static final long ELEMENT_COUNT = RANDOM.nextInt(Integer.MAX_VALUE); |
| private static final long LOAD_TIME = RANDOM.nextInt(Integer.MAX_VALUE); |
| |
| @Test |
| public void metrics() { |
| MetricRegistry registry = new MetricRegistry(); |
| CacheStatsMetrics metrics = new CacheStatsMetrics(); |
| metrics.setMetricRegistry(registry); |
| |
| CacheStatsMBean bean = new TestStats("stats"); |
| metrics.addCacheStatsMBean(bean); |
| |
| Map<String, Counter> counters = registry.getCounters(); |
| |
| Counter counter = counters.get(metricName(bean.getName(), REQUEST)); |
| assertNotNull(counter); |
| assertEquals(REQUEST_COUNT, counter.getCount()); |
| |
| counter = counters.get(metricName(bean.getName(), HIT)); |
| assertNotNull(counter); |
| assertEquals(HIT_COUNT, counter.getCount()); |
| |
| counter = counters.get(metricName(bean.getName(), MISS)); |
| assertNotNull(counter); |
| assertEquals(MISS_COUNT, counter.getCount()); |
| |
| counter = counters.get(metricName(bean.getName(), EVICTION)); |
| assertNotNull(counter); |
| assertEquals(EVICTION_COUNT, counter.getCount()); |
| |
| counter = counters.get(metricName(bean.getName(), ELEMENT)); |
| assertNotNull(counter); |
| assertEquals(ELEMENT_COUNT, counter.getCount()); |
| |
| counter = counters.get(metricName(bean.getName(), CacheStatsMetrics.LOAD_TIME)); |
| assertNotNull(counter); |
| assertEquals(LOAD_TIME, counter.getCount()); |
| |
| metrics.removeCacheStatsMBean(bean); |
| assertEquals(0, registry.getCounters().size()); |
| } |
| |
| private static class TestStats extends AbstractCacheStats { |
| |
| TestStats(@NotNull String name) { |
| super(name); |
| } |
| |
| @Override |
| protected com.google.common.cache.CacheStats getCurrentStats() { |
| return new com.google.common.cache.CacheStats( |
| HIT_COUNT, MISS_COUNT, MISS_COUNT, 0, LOAD_TIME, EVICTION_COUNT); |
| } |
| |
| @Override |
| public long getElementCount() { |
| return ELEMENT_COUNT; |
| } |
| |
| @Override |
| public long getMaxTotalWeight() { |
| return 1000; |
| } |
| |
| @Override |
| public long estimateCurrentWeight() { |
| return 1000; |
| } |
| } |
| } |