| /** |
| * 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.hadoop.hbase.util; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertNull; |
| |
| import java.lang.management.GarbageCollectorMXBean; |
| import java.lang.management.ManagementFactory; |
| import java.util.Hashtable; |
| import java.util.List; |
| import java.util.Map; |
| import javax.management.MalformedObjectNameException; |
| import javax.management.ObjectName; |
| import javax.management.openmbean.CompositeData; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.testclassification.MiscTests; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @Category({ MiscTests.class, SmallTests.class }) |
| public class TestJSONMetricUtil { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestJSONMetricUtil.class); |
| |
| private static final Logger LOG = LoggerFactory.getLogger(TestJSONMetricUtil.class); |
| |
| @Test |
| public void testBuildHashtable() { |
| String[] keys = { "type", "name" }; |
| String[] emptyKey = {}; |
| String[] values = { "MemoryPool", "Par Eden Space" }; |
| String[] values2 = { "MemoryPool", "Par Eden Space", "Test" }; |
| String[] emptyValue = {}; |
| Map<String, String> properties = JSONMetricUtil.buldKeyValueTable(keys, values); |
| assertEquals(values[0], properties.get("type")); |
| assertEquals(values[1], properties.get("name")); |
| |
| assertNull(JSONMetricUtil.buldKeyValueTable(keys, values2)); |
| assertNull(JSONMetricUtil.buldKeyValueTable(keys, emptyValue)); |
| assertNull(JSONMetricUtil.buldKeyValueTable(emptyKey, values2)); |
| assertNull(JSONMetricUtil.buldKeyValueTable(emptyKey, emptyValue)); |
| } |
| |
| @Test |
| public void testBuildObjectName() throws MalformedObjectNameException { |
| String[] keys = { "type", "name" }; |
| String[] values = { "MemoryPool", "Par Eden Space" }; |
| Hashtable<String, String> properties = JSONMetricUtil.buldKeyValueTable(keys, values); |
| ObjectName testObject = |
| JSONMetricUtil.buildObjectName(JSONMetricUtil.JAVA_LANG_DOMAIN, properties); |
| assertEquals(JSONMetricUtil.JAVA_LANG_DOMAIN, testObject.getDomain()); |
| assertEquals(testObject.getKeyPropertyList(), properties); |
| } |
| |
| @Test |
| public void testGetLastGCInfo() { |
| List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans(); |
| for (GarbageCollectorMXBean bean : gcBeans) { |
| ObjectName on = bean.getObjectName(); |
| Object value = JSONMetricUtil.getValueFromMBean(on, "LastGcInfo"); |
| LOG.info("Collector Info: " + value); |
| if (value != null && value instanceof CompositeData) { |
| CompositeData cds = (CompositeData) value; |
| assertNotNull(cds.get("duration")); |
| } |
| } |
| } |
| } |