Glassfish example source code file (SampleImpl.java)

This example Glassfish source code file (SampleImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

emitterthread, illegalargumentexception, io, management, map, mbeanattributeinfo, mbeaninfo, mbeaninfo, object, object, objectname, runtimeexception, serializable, serializable, string, string, util

The Glassfish SampleImpl.java source code

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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
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 * file and include the License file at packager/legal/LICENSE.txt.
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package org.glassfish.admin.amx.impl.mbean;

import javax.management.Attribute;
import javax.management.MBeanAttributeInfo;
import javax.management.AttributeNotFoundException;
import javax.management.MBeanInfo;
import javax.management.ObjectName;
import javax.management.openmbean.*;
import javax.management.remote.JMXServiceURL;

import java.io.Serializable;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.List;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.HashMap;

import org.glassfish.admin.amx.base.Sample;
import org.glassfish.admin.amx.util.jmx.JMXUtil;
import org.glassfish.admin.amx.util.jmx.OpenMBeanUtil;
import org.glassfish.admin.amx.util.MapUtil;
import org.glassfish.admin.amx.util.ListUtil;
import org.glassfish.admin.amx.util.SetUtil;
import org.glassfish.admin.amx.util.StringUtil;

import org.glassfish.admin.amx.util.CollectionUtil;
import org.glassfish.admin.amx.core.Util;

/**
@see Sample
 */
public final class SampleImpl extends AMXImplBase {
    // all Attributes live in a Map

    private final Map<String, Serializable> mAttributes;
    private MBeanInfo mExtendedMBeanInfo;

    public void emitNotifications(final Serializable data, final int numNotifs, final long interval) {
        if (numNotifs <= 0) {
            throw new IllegalArgumentException("" + numNotifs);
        }

        new EmitterThread(data, numNotifs, interval).start();
    }

    public SampleImpl(final ObjectName parentObjectName) {
        super(parentObjectName, Sample.class);
        mAttributes = Collections.synchronizedMap(new HashMap<String, Serializable>());
        mExtendedMBeanInfo = null;
    }

    public void addAttribute(final String name, final Serializable value) {
        if (name == null || name.length() == 0) {
            throw new IllegalArgumentException();
        }

        mAttributes.put(name, value);
        //mExtendedMBeanInfo	= null;
    }

    public void removeAttribute(final String name) {
        mAttributes.remove(name);
        mExtendedMBeanInfo = null;
    }

    private synchronized MBeanInfo createMBeanInfo(final MBeanInfo baseMBeanInfo) {
        final MBeanAttributeInfo[] dynamicAttrInfos = new MBeanAttributeInfo[mAttributes.keySet().size()];
        int i = 0;
        for (final String name : mAttributes.keySet()) {
            final Object value = mAttributes.get(name);
            final String type = value == null ? String.class.getName() : value.getClass().getName();

            dynamicAttrInfos[i] = new MBeanAttributeInfo(name, type, "dynamically-added Attribute",
                    true, true, false);
            ++i;
        }

        final MBeanAttributeInfo[] attrInfos =
                JMXUtil.mergeMBeanAttributeInfos(dynamicAttrInfos, baseMBeanInfo.getAttributes());

        return (JMXUtil.newMBeanInfo(baseMBeanInfo, attrInfos));
    }

    public synchronized MBeanInfo getMBeanInfo() {
        if (mExtendedMBeanInfo == null) {
            mExtendedMBeanInfo = createMBeanInfo(super.getMBeanInfo());
        }

        return (mExtendedMBeanInfo);
    }

    protected Serializable getAttributeManually(final String name) {
        if (!mAttributes.containsKey(name)) {
            throw new RuntimeException(new AttributeNotFoundException(name));
        }
        return mAttributes.get(name);
    }

    protected void setAttributeManually(final Attribute attr) {
        mAttributes.put(attr.getName(), Serializable.class.cast(attr.getValue()));
    }

    private final class EmitterThread extends Thread {

        private final Serializable mData;
        private final int mNumNotifs;
        private final long mIntervalMillis;

        public EmitterThread(final Serializable data, final int numNotifs, final long intervalMillis) {
            mData = data;
            mNumNotifs = numNotifs;
            mIntervalMillis = intervalMillis;
        }

        public void run() {
            for (int i = 0; i < mNumNotifs; ++i) {
                sendNotification(Sample.SAMPLE_NOTIFICATION_TYPE, Sample.USER_DATA_KEY, mData);

                try {
                    Thread.sleep(mIntervalMillis);
                } catch (InterruptedException e) {
                    break;
                }
            }
        }
    }

    public void uploadBytes(final byte[] bytes) {
        // do nothing; just a bandwidth test
    }
    private final static int MEGABYTE = 1024 * 1024;

    public byte[] downloadBytes(final int numBytes) {
        if (numBytes < 0 || numBytes > 10 * MEGABYTE) {
            throw new IllegalArgumentException("Illegal count: " + numBytes);
        }

        final byte[] bytes = new byte[numBytes];

        return (bytes);
    }

    public ObjectName[] getAllAMX() {
        final List<ObjectName> all = Util.toObjectNameList(getDomainRootProxy().getQueryMgr().queryAll());

        return CollectionUtil.toArray(all, ObjectName.class);
    }

    /** Purpose: have the AMXValidator  check what we're returning as acceptable */
    public Object[] getAllSortsOfStuff() {
        final List<Object> stuff = ListUtil.newList();

        // generate a bunch of fields for a CompositeData, naming them with a simple type eg "Byte"
        final Map<String, Object> values = MapUtil.newMap();
        values.put("ByteField", new Byte((byte) 0));
        values.put("ShortField", new Short((short) 0));
        values.put("IntegerField", new Integer(0));
        values.put("LongField", new Long(0));
        values.put("FloatField", new Float(0.0));
        values.put("DoubleField", new Double(0.0));
        values.put("BigDecimalField", new java.math.BigDecimal("999999999999999999999999999999.999999999999999999999999999999"));
        values.put("BigIntegerField", new java.math.BigInteger("999999999999999999999999999999999999999999999999999999999999"));
        values.put("CharacterField", 'x');
        values.put("StringField", "hello");
        values.put("BooleanField", true);
        values.put("DateField", new java.util.Date());
        values.put("ObjectNameField", getObjectName());
        CompositeData data = null;
        try {

            data = OpenMBeanUtil.mapToCompositeData("org.glassfish.test.Sample1", "test", values);
            stuff.add(data);
        } catch (final Exception e) {
            throw new RuntimeException(e);
        }

        // Add all those open types to our main list too
        stuff.add(data);
        stuff.addAll(values.values());
        stuff.add(MapUtil.newMap());
        stuff.add(ListUtil.newList());
        stuff.add(SetUtil.newSet());

        TabularDataSupport table = null;
        try {
            // might not be appropriate TabularData, investigate...
            final String[] indexNames = CollectionUtil.toArray(values.keySet(), String.class);
            final CompositeType rowType = data.getCompositeType();
            final TabularType tabularType = new TabularType("org.glassfish.test.Sample2", "test", rowType, indexNames);
            table = new TabularDataSupport(tabularType);
            table.put(data);
        } catch (final OpenDataException e) {
            throw new RuntimeException(e);
        }
        stuff.add(table);

        final Object[] result = CollectionUtil.toArray(stuff, Object.class);

        return result;
    }
}