/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.internal.metrics.metricsets;
import com.hazelcast.internal.metrics.LongGauge;
import com.hazelcast.internal.metrics.ProbeLevel;
import com.hazelcast.internal.metrics.impl.MetricsRegistryImpl;
import com.hazelcast.logging.Logger;
import com.hazelcast.test.AssertTask;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.lang.management.ManagementFactory;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.assertEquals;
@RunWith(HazelcastSerialClassRunner.class)
@Category(QuickTest.class)
public class RuntimeMetricSetTest extends HazelcastTestSupport {
private static final int TEN_MB = 10 * 1024 * 1024;
private MetricsRegistryImpl metricsRegistry;
private Runtime runtime;
@Before
public void setup() {
metricsRegistry = new MetricsRegistryImpl(Logger.getLogger(MetricsRegistryImpl.class), ProbeLevel.INFO);
RuntimeMetricSet.register(metricsRegistry);
runtime = Runtime.getRuntime();
}
@Test
public void utilityConstructor() {
assertUtilityConstructor(RuntimeMetricSet.class);
}
@Test
public void freeMemory() {
final LongGauge gauge = metricsRegistry.newLongGauge("runtime.freeMemory");
assertTrueEventually(new AssertTask() {
@Override
public void run() throws Exception {
assertEquals(runtime.freeMemory(), gauge.read(), TEN_MB);
}
});
}
@Test
public void totalMemory() {
final LongGauge gauge = metricsRegistry.newLongGauge("runtime.totalMemory");
assertTrueEventually(new AssertTask() {
@Override
public void run() throws Exception {
assertEquals(runtime.totalMemory(), gauge.read(), TEN_MB);
}
});
}
@Test
public void maxMemory() {
final LongGauge gauge = metricsRegistry.newLongGauge("runtime.maxMemory");
assertTrueEventually(new AssertTask() {
@Override
public void run() throws Exception {
assertEquals(runtime.maxMemory(), gauge.read(), TEN_MB);
}
});
}
@Test
public void usedMemory() {
final LongGauge gauge = metricsRegistry.newLongGauge("runtime.usedMemory");
assertTrueEventually(new AssertTask() {
@Override
public void run() throws Exception {
double expected = runtime.totalMemory() - runtime.freeMemory();
assertEquals(expected, gauge.read(), TEN_MB);
}
});
}
@Test
public void availableProcessors() {
LongGauge gauge = metricsRegistry.newLongGauge("runtime.availableProcessors");
assertEquals(runtime.availableProcessors(), gauge.read());
}
@Test
public void uptime() {
final LongGauge gauge = metricsRegistry.newLongGauge("runtime.uptime");
assertTrueEventually(new AssertTask() {
@Override
public void run() throws Exception {
double expected = ManagementFactory.getRuntimeMXBean().getUptime();
assertEquals(expected, gauge.read(), TimeUnit.MINUTES.toMillis(1));
}
});
}
}