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/*
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 *
 * Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
 *
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 * General Public License Version 2 only ("GPL") or the Common Development
 * 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.
 *
 * When distributing the software, include this License Header Notice in each
 * 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 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());
        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 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