/*
* 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.impl;
import com.hazelcast.internal.metrics.LongGauge;
import com.hazelcast.internal.metrics.Probe;
import com.hazelcast.logging.Logger;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.annotation.ParallelTest;
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.io.OutputStream;
import java.util.LinkedList;
import java.util.Set;
import static com.hazelcast.internal.metrics.ProbeLevel.INFO;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class RegisterMetricTest extends HazelcastTestSupport {
private MetricsRegistryImpl metricsRegistry;
@Before
public void setup() {
metricsRegistry = new MetricsRegistryImpl(Logger.getLogger(MetricsRegistryImpl.class), INFO);
}
@Test(expected = NullPointerException.class)
public void whenNamePrefixNull() {
metricsRegistry.scanAndRegister(new SomeField(), null);
}
@Test(expected = NullPointerException.class)
public void whenObjectNull() {
metricsRegistry.scanAndRegister(null, "bar");
}
@Test(expected = IllegalArgumentException.class)
public void whenUnrecognizedField() {
metricsRegistry.scanAndRegister(new SomeUnrecognizedField(), "bar");
}
@Test
public void whenNoGauges_thenIgnore() {
metricsRegistry.scanAndRegister(new LinkedList(), "bar");
for (String name : metricsRegistry.getNames()) {
assertFalse(name.startsWith("bar"));
}
}
public class SomeField {
@Probe
long field;
}
public class SomeUnrecognizedField {
@Probe
OutputStream field;
}
@Test
public void deregister_whenNotRegistered() {
MultiFieldAndMethod multiFieldAndMethod = new MultiFieldAndMethod();
multiFieldAndMethod.field1 = 1;
multiFieldAndMethod.field2 = 2;
metricsRegistry.deregister(multiFieldAndMethod);
// make sure that the the metrics have been removed
Set<String> names = metricsRegistry.getNames();
assertFalse(names.contains("foo.field1"));
assertFalse(names.contains("foo.field2"));
assertFalse(names.contains("foo.method1"));
assertFalse(names.contains("foo.method2"));
}
public class MultiFieldAndMethod {
@Probe
long field1;
@Probe
long field2;
@Probe
int method1() {
return 1;
}
@Probe
int method2() {
return 2;
}
}
@Test
public void deregister_whenRegistered() {
MultiFieldAndMethod multiFieldAndMethod = new MultiFieldAndMethod();
multiFieldAndMethod.field1 = 1;
multiFieldAndMethod.field2 = 2;
metricsRegistry.scanAndRegister(multiFieldAndMethod, "foo");
LongGauge field1 = metricsRegistry.newLongGauge("foo.field1");
LongGauge field2 = metricsRegistry.newLongGauge("foo.field2");
LongGauge method1 = metricsRegistry.newLongGauge("foo.method1");
LongGauge method2 = metricsRegistry.newLongGauge("foo.method2");
metricsRegistry.deregister(multiFieldAndMethod);
// make sure that the the metrics have been removed
Set<String> names = metricsRegistry.getNames();
assertFalse(names.contains("foo.field1"));
assertFalse(names.contains("foo.field2"));
assertFalse(names.contains("foo.method1"));
assertFalse(names.contains("foo.method2"));
// make sure that the metric input has been disconnected
assertEquals(0, field1.read());
assertEquals(0, field2.read());
assertEquals(0, method1.read());
assertEquals(0, method2.read());
}
@Test
public void deregister_whenAlreadyDeregistered() {
MultiFieldAndMethod multiFieldAndMethod = new MultiFieldAndMethod();
multiFieldAndMethod.field1 = 1;
multiFieldAndMethod.field2 = 2;
metricsRegistry.scanAndRegister(multiFieldAndMethod, "foo");
metricsRegistry.deregister(multiFieldAndMethod);
metricsRegistry.deregister(multiFieldAndMethod);
// make sure that the the metrics have been removed
Set<String> names = metricsRegistry.getNames();
assertFalse(names.contains("foo.field1"));
assertFalse(names.contains("foo.field2"));
assertFalse(names.contains("foo.method1"));
assertFalse(names.contains("foo.method2"));
}
}