| /* |
| * 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.segment; |
| |
| import static org.apache.jackrabbit.oak.segment.RecordCache.newRecordCache; |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.IOException; |
| import java.util.Random; |
| |
| import com.google.common.base.Supplier; |
| import com.google.common.cache.CacheStats; |
| import org.apache.jackrabbit.oak.segment.memory.MemoryStore; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class RecordCacheStatsTest { |
| private static final String NAME = "cache stats"; |
| private static final int KEYS = 100; |
| |
| private final Random rnd = new Random(); |
| private final MemoryStore store = new MemoryStore(); |
| |
| private final RecordCache<Integer> cache = newRecordCache(KEYS); |
| private final RecordCacheStats cacheStats = |
| new RecordCacheStats(NAME, |
| new Supplier<CacheStats>() { |
| @Override public CacheStats get() { return cache.getStats(); } |
| }, |
| new Supplier<Long>() { |
| @Override public Long get() { return cache.size(); } |
| }, |
| new Supplier<Long>() { |
| @Override public Long get() { return cache.estimateCurrentWeight(); } |
| }); |
| |
| private int hits; |
| |
| public RecordCacheStatsTest() throws IOException {} |
| |
| private RecordId newRecordId() { |
| return TestUtils.newRecordId(store.getSegmentIdProvider(), rnd); |
| } |
| |
| @Before |
| public void setup() { |
| for (int k = 0; k < KEYS; k++) { |
| cache.put(k, newRecordId()); |
| } |
| |
| for (int k = 0; k < 100; k++) { |
| if (cache.get(4 * k) != null) { |
| hits++; |
| } |
| } |
| } |
| |
| @Test |
| public void name() throws Exception { |
| assertEquals(NAME, cacheStats.getName()); |
| } |
| |
| @Test |
| public void getRequestCount() { |
| assertEquals(KEYS, cacheStats.getRequestCount()); |
| } |
| |
| @Test |
| public void getHitCount() { |
| assertEquals(hits, cacheStats.getHitCount()); |
| } |
| |
| @Test |
| public void getHitRate() { |
| assertEquals(((double)hits)/KEYS, cacheStats.getHitRate(), Double.MIN_VALUE); |
| } |
| |
| @Test |
| public void getMissCount() { |
| assertEquals(KEYS - hits, cacheStats.getMissCount()); |
| } |
| |
| @Test |
| public void getMissRate() { |
| assertEquals((KEYS - (double)hits)/KEYS, cacheStats.getMissRate(), Double.MIN_VALUE); |
| } |
| |
| @Test |
| public void getLoadCount() { |
| assertEquals(KEYS, cacheStats.getLoadCount()); |
| } |
| |
| @Test |
| public void getLoadSuccessCount() { |
| assertEquals(KEYS, cacheStats.getLoadSuccessCount()); |
| } |
| |
| @Test |
| public void getLoadExceptionCount() { |
| assertEquals(0, cacheStats.getLoadExceptionCount()); |
| } |
| |
| @Test |
| public void getLoadExceptionRate() { |
| assertEquals(0, cacheStats.getLoadExceptionRate(), Double.MIN_VALUE); |
| } |
| |
| @Test |
| public void getTotalLoadTime() { |
| assertEquals(0, cacheStats.getTotalLoadTime()); |
| } |
| |
| @Test |
| public void getAverageLoadPenalty() { |
| assertEquals(0, cacheStats.getAverageLoadPenalty(), Double.MIN_VALUE); |
| } |
| |
| @Test |
| public void getEvictionCount() { |
| assertEquals(0, cacheStats.getEvictionCount()); |
| } |
| |
| @Test |
| public void getElementCount() { |
| assertEquals(KEYS, cacheStats.getElementCount()); |
| } |
| |
| @Test |
| public void getMaxTotalWeight() { |
| assertEquals(-1, cacheStats.getMaxTotalWeight()); |
| } |
| |
| @Test |
| public void estimateCurrentWeight() { |
| assertEquals(KEYS, cacheStats.estimateCurrentWeight()); |
| } |
| |
| @Test |
| public void resetStats() { |
| cacheStats.resetStats(); |
| assertEquals(0, cacheStats.getRequestCount()); |
| assertEquals(0, cacheStats.getHitCount()); |
| assertEquals(1.0, cacheStats.getHitRate(), Double.MIN_VALUE); |
| assertEquals(0, cacheStats.getMissCount()); |
| assertEquals(0.0, cacheStats.getMissRate(), Double.MIN_VALUE); |
| assertEquals(0, cacheStats.getLoadCount()); |
| assertEquals(0, cacheStats.getLoadSuccessCount()); |
| assertEquals(0, cacheStats.getLoadExceptionCount()); |
| assertEquals(0, cacheStats.getLoadExceptionRate(), Double.MIN_VALUE); |
| assertEquals(0, cacheStats.getTotalLoadTime()); |
| assertEquals(0, cacheStats.getAverageLoadPenalty(), Double.MIN_VALUE); |
| assertEquals(0, cacheStats.getEvictionCount()); |
| assertEquals(KEYS, cacheStats.getElementCount()); |
| assertEquals(-1, cacheStats.getMaxTotalWeight()); |
| assertEquals(KEYS, cacheStats.estimateCurrentWeight()); |
| } |
| } |