/*
 * Copyright (c) 2000, 2017 Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2021 Contributors to the Eclipse Foundation
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

/*
 * @(#)ServiceManagerMonitor.java	1.13 06/28/07
 */

package com.sun.messaging.jmq.jmsserver.management.mbeans;

import java.util.List;
import java.util.Iterator;

import javax.management.ObjectName;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanOperationInfo;
import javax.management.MBeanNotificationInfo;
import javax.management.MBeanException;

import com.sun.messaging.jms.management.server.*;

import com.sun.messaging.jmq.util.MetricCounters;
import com.sun.messaging.jmq.jmsserver.Globals;
import com.sun.messaging.jmq.jmsserver.service.MetricManager;
import com.sun.messaging.jmq.jmsserver.management.util.ServiceUtil;

public class ServiceManagerMonitor extends MQMBeanReadOnly {
    private static MBeanAttributeInfo[] attrs = {
            new MBeanAttributeInfo(ServiceAttributes.MSG_BYTES_IN, Long.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_MSG_BYTES_IN), true, false, false),

            new MBeanAttributeInfo(ServiceAttributes.MSG_BYTES_OUT, Long.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_MSG_BYTES_OUT), true, false, false),

            new MBeanAttributeInfo(ServiceAttributes.NUM_ACTIVE_THREADS, Integer.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_NUM_ACTIVE_THREADS), true,
                    false, false),

            new MBeanAttributeInfo(ServiceAttributes.NUM_MSGS_IN, Long.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_NUM_MSGS_IN), true, false, false),

            new MBeanAttributeInfo(ServiceAttributes.NUM_MSGS_OUT, Long.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_NUM_MSGS_OUT), true, false, false),

            new MBeanAttributeInfo(ServiceAttributes.NUM_PKTS_IN, Long.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_NUM_PKTS_IN), true, false, false),

            new MBeanAttributeInfo(ServiceAttributes.NUM_PKTS_OUT, Long.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_NUM_PKTS_OUT), true, false, false),

            new MBeanAttributeInfo(ServiceAttributes.NUM_SERVICES, Integer.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_NUM_SERVICES), true, false, false),

            new MBeanAttributeInfo(ServiceAttributes.PKT_BYTES_IN, Long.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_PKT_BYTES_IN), true, false, false),

            new MBeanAttributeInfo(ServiceAttributes.PKT_BYTES_OUT, Long.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_PKT_BYTES_OUT), true, false,
                    false) };

    private static MBeanOperationInfo[] ops = { new MBeanOperationInfo(ServiceOperations.GET_SERVICES, mbr.getString(mbr.I_SVC_MGR_MON_OP_GET_SERVICES), null,
            ObjectName[].class.getName(), MBeanOperationInfo.INFO) };

    private static String[] svcNotificationTypes = { ServiceNotification.SERVICE_PAUSE, ServiceNotification.SERVICE_RESUME };

    private static MBeanNotificationInfo[] notifs = {
            new MBeanNotificationInfo(svcNotificationTypes, ServiceNotification.class.getName(), mbr.getString(mbr.I_SVC_NOTIFICATIONS)) };

    public Long getMsgBytesIn() {
        MetricCounters mc = getMetricsForAllServices();
        return (Long.valueOf(mc.messageBytesIn));
    }

    public Long getMsgBytesOut() {
        MetricCounters mc = getMetricsForAllServices();
        return (Long.valueOf(mc.messageBytesOut));
    }

    public Integer getNumActiveThreads() {
        MetricCounters mc = getMetricsForAllServices();
        return (Integer.valueOf(mc.threadsActive));
    }

    public Long getNumMsgsIn() {
        MetricCounters mc = getMetricsForAllServices();
        return (Long.valueOf(mc.messagesIn));
    }

    public Long getNumMsgsOut() {
        MetricCounters mc = getMetricsForAllServices();
        return (Long.valueOf(mc.messagesOut));
    }

    public Long getNumPktsIn() {
        MetricCounters mc = getMetricsForAllServices();
        return (Long.valueOf(mc.packetsIn));
    }

    public Long getNumPktsOut() {
        MetricCounters mc = getMetricsForAllServices();
        return (Long.valueOf(mc.packetsOut));
    }

    public Integer getNumServices() {
        List l = ServiceUtil.getVisibleServiceNames();

        return (Integer.valueOf(l.size()));
    }

    public Long getPktBytesIn() {
        MetricCounters mc = getMetricsForAllServices();
        return (Long.valueOf(mc.packetBytesIn));
    }

    public Long getPktBytesOut() {
        MetricCounters mc = getMetricsForAllServices();
        return (Long.valueOf(mc.packetBytesOut));
    }

    public ObjectName[] getServices() throws MBeanException {
        List l = ServiceUtil.getVisibleServiceNames();

        if (l.size() == 0) {
            return (null);
        }

        ObjectName oNames[] = new ObjectName[l.size()];

        Iterator iter = l.iterator();

        int i = 0;
        while (iter.hasNext()) {
            String service = (String) iter.next();

            try {
                ObjectName o = MQObjectName.createServiceMonitor(service);

                oNames[i++] = o;
            } catch (Exception e) {
                handleOperationException(ServiceOperations.GET_SERVICES, e);
            }
        }

        return (oNames);
    }

    @Override
    public String getMBeanName() {
        return ("ServiceManagerMonitor");
    }

    @Override
    public String getMBeanDescription() {
        return (mbr.getString(mbr.I_SVC_MGR_MON_DESC));
    }

    @Override
    public MBeanAttributeInfo[] getMBeanAttributeInfo() {
        return (attrs);
    }

    @Override
    public MBeanOperationInfo[] getMBeanOperationInfo() {
        return (ops);
    }

    @Override
    public MBeanNotificationInfo[] getMBeanNotificationInfo() {
        return (notifs);
    }

    public void notifyServicePause(String name) {
        ServiceNotification sn;
        sn = new ServiceNotification(ServiceNotification.SERVICE_PAUSE, this, sequenceNumber++);
        sn.setServiceName(name);

        sendNotification(sn);
    }

    public void notifyServiceResume(String name) {
        ServiceNotification sn;
        sn = new ServiceNotification(ServiceNotification.SERVICE_RESUME, this, sequenceNumber++);
        sn.setServiceName(name);

        sendNotification(sn);
    }

    private MetricCounters getMetricsForAllServices() {
        MetricManager mm = Globals.getMetricManager();
        MetricCounters mc = null;
        mc = mm.getMetricCounters(null);

        return (mc);
    }
}
