org.apache.geode.admin.jmx.internal.StatisticAttributeInfo.java Source code

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Here is the source code for org.apache.geode.admin.jmx.internal.StatisticAttributeInfo.java

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/*
 * 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.geode.admin.jmx.internal;

import org.apache.geode.admin.Statistic;
import org.apache.geode.internal.Assert;

import javax.management.Descriptor;
import javax.management.modelmbean.DescriptorSupport;
import javax.management.modelmbean.ModelMBeanAttributeInfo;

/**
 * Subclass of AttributeInfo with {@link org.apache.geode.admin.Statistic} added for use as the
 * {@link javax.management.modelmbean.ModelMBeanAttributeInfo} descriptor's <i>targetObject</i>
 * value.
 *
 * @since GemFire 3.5
 *
 */
class StatisticAttributeInfo extends org.apache.commons.modeler.AttributeInfo {
    private static final long serialVersionUID = 28022387514935560L;

    private Statistic stat;

    public StatisticAttributeInfo() {
        super();
    }

    public Statistic getStat() {
        return this.stat;
    }

    public void setStat(Statistic stat) {
        // System.out.println(">> stat = " + stat);
        Assert.assertTrue(stat != null, "Attempting to set stat to null");
        this.stat = stat;
    }

    @Override
    public ModelMBeanAttributeInfo createAttributeInfo() {
        Descriptor desc = new DescriptorSupport(
                new String[] { "name=" + this.displayName, "descriptorType=attribute", "currencyTimeLimit=-1", // always stale
                        "displayName=" + this.displayName, "getMethod=getValue" });

        Assert.assertTrue(this.stat != null, "Stat target object is null!");
        desc.setField("targetObject", this.stat);

        ModelMBeanAttributeInfo info = new ModelMBeanAttributeInfo(this.displayName, // name
                this.type, // type
                this.description, // description
                this.readable, // isReadable
                this.writeable, // isWritable
                this.is, // isIs
                desc);

        return info;
    }
}