/*
* Copyright (C) 2013, 2014 Brett Wooldridge
*
* Licensed 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.zaxxer.hikari;
import java.sql.Connection;
import java.sql.SQLException;
import org.junit.Assert;
import org.junit.Test;
import com.codahale.metrics.Histogram;
import com.codahale.metrics.Metric;
import com.codahale.metrics.MetricFilter;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.Timer;
import com.zaxxer.hikari.util.PoolUtilities;
/**
* Test HikariCP/CodaHale metrics integration.
*
* @author Brett Wooldridge
*/
public class TestMetrics
{
@Test
public void testMetricWait() throws SQLException
{
MetricRegistry metricRegistry = new MetricRegistry();
HikariConfig config = new HikariConfig();
config.setMinimumIdle(1);
config.setMaximumPoolSize(1);
config.setMetricRegistry(metricRegistry);
config.setPoolName("test");
config.setDataSourceClassName("com.zaxxer.hikari.mocks.StubDataSource");
HikariDataSource ds = new HikariDataSource(config);
try {
ds.getConnection().close();
Timer timer = metricRegistry.getTimers(new MetricFilter() {
/** {@inheritDoc} */
@Override
public boolean matches(String name, Metric metric)
{
return "test.pool.Wait".equals(MetricRegistry.name("test", "pool", "Wait"));
}
}).values().iterator().next();
Assert.assertEquals(1, timer.getCount());
Assert.assertTrue(timer.getMeanRate() > 0.0);
}
finally {
ds.close();
}
}
@Test
public void testMetricUsage() throws SQLException
{
MetricRegistry metricRegistry = new MetricRegistry();
HikariConfig config = new HikariConfig();
config.setMinimumIdle(1);
config.setMaximumPoolSize(1);
config.setMetricRegistry(metricRegistry);
config.setPoolName("test");
config.setDataSourceClassName("com.zaxxer.hikari.mocks.StubDataSource");
HikariDataSource ds = new HikariDataSource(config);
try {
Connection connection = ds.getConnection();
PoolUtilities.quietlySleep(250L);
connection.close();
Histogram histo = metricRegistry.getHistograms(new MetricFilter() {
/** {@inheritDoc} */
@Override
public boolean matches(String name, Metric metric)
{
return "test.pool.Usage".equals(MetricRegistry.name("test", "pool", "Usage"));
}
}).values().iterator().next();
Assert.assertEquals(1, histo.getCount());
double seventyFifth = histo.getSnapshot().get75thPercentile();
Assert.assertTrue("Seventy-fith percentile less than 250ms: " + seventyFifth, seventyFifth >= 250.0);
}
finally {
ds.close();
}
}
}