| /* |
| * 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.plugins.document; |
| |
| import java.lang.management.ManagementFactory; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ScheduledExecutorService; |
| |
| import com.codahale.metrics.Meter; |
| import com.codahale.metrics.Snapshot; |
| import com.codahale.metrics.Timer; |
| |
| import org.apache.jackrabbit.oak.commons.concurrent.ExecutorCloser; |
| import org.apache.jackrabbit.oak.plugins.metric.MetricStatisticsProvider; |
| import org.junit.After; |
| import org.junit.Test; |
| |
| import static java.util.concurrent.TimeUnit.MICROSECONDS; |
| import static org.junit.Assert.assertEquals; |
| |
| public class DocumentNodeStoreStatsTest { |
| private ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor(); |
| private MetricStatisticsProvider statsProvider = |
| new MetricStatisticsProvider(ManagementFactory.getPlatformMBeanServer(),executor); |
| private DocumentNodeStoreStats stats = new DocumentNodeStoreStats(statsProvider); |
| |
| @After |
| public void shutDown(){ |
| statsProvider.close(); |
| new ExecutorCloser(executor).close(); |
| } |
| |
| @Test |
| public void backgroundRead() { |
| BackgroundReadStats readStats = new BackgroundReadStats(); |
| readStats.numExternalChanges = 5; |
| stats.doneBackgroundRead(readStats); |
| assertEquals(5, getMeter(DocumentNodeStoreStats.BGR_NUM_CHANGES_RATE).getCount()); |
| } |
| |
| @Test |
| public void backgroundWrite() { |
| BackgroundWriteStats writeStats = new BackgroundWriteStats(); |
| writeStats.num = 7; |
| stats.doneBackgroundUpdate(writeStats); |
| assertEquals(7, getMeter(DocumentNodeStoreStats.BGW_NUM_WRITES_RATE).getCount()); |
| } |
| |
| @Test |
| public void leaseUpdate() { |
| stats.doneLeaseUpdate(47); |
| stats.doneLeaseUpdate(53); |
| Timer t = getTimer(DocumentNodeStoreStats.LEASE_UPDATE); |
| Snapshot s = t.getSnapshot(); |
| assertEquals(MICROSECONDS.toNanos(47), s.getMin()); |
| assertEquals(MICROSECONDS.toNanos(53), s.getMax()); |
| assertEquals(MICROSECONDS.toNanos(50), s.getMean(), 0.01); |
| } |
| |
| @Test |
| public void externalChangesLag() { |
| BackgroundReadStats readStats = new BackgroundReadStats(); |
| readStats.externalChangesLag = 42; |
| stats.doneBackgroundRead(readStats); |
| Meter m = getMeter(DocumentNodeStoreStats.BGR_LAG); |
| assertEquals(42, m.getCount()); |
| readStats.externalChangesLag = 63; |
| stats.doneBackgroundRead(readStats); |
| assertEquals(105, m.getCount()); |
| } |
| |
| private Meter getMeter(String name) { |
| return statsProvider.getRegistry().getMeters().get(name); |
| } |
| |
| private Timer getTimer(String name) { |
| return statsProvider.getRegistry().getTimers().get(name); |
| } |
| } |