/*
 * 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
 */

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

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

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

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.util.BrokerException;
import com.sun.messaging.jmq.util.log.Logger;
import com.sun.messaging.jmq.jmsserver.management.util.ServiceUtil;

public class ServiceManagerConfig extends MQMBeanReadWrite {
    private static MBeanAttributeInfo[] attrs = {
            new MBeanAttributeInfo(ServiceAttributes.MAX_THREADS, Integer.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_MAX_THREADS), true, false, false),

            new MBeanAttributeInfo(ServiceAttributes.MIN_THREADS, Integer.class.getName(), mbr.getString(mbr.I_SVC_MGR_ATTR_MIN_THREADS), true, false,
                    false), };

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

            new MBeanOperationInfo(ServiceOperations.PAUSE, mbr.getString(mbr.I_SVC_MGR_OP_PAUSE), null, Void.TYPE.getName(), MBeanOperationInfo.ACTION),

            new MBeanOperationInfo(ServiceOperations.RESUME, mbr.getString(mbr.I_SVC_MGR_OP_RESUME), null, Void.TYPE.getName(), MBeanOperationInfo.ACTION) };

    public Integer getMaxThreads() {
        MetricManager mm = Globals.getMetricManager();
        MetricCounters mc = mm.getMetricCounters(null);

        return (Integer.valueOf(mc.threadsHighWater));
    }

    public Integer getMinThreads() {
        MetricManager mm = Globals.getMetricManager();
        MetricCounters mc = mm.getMetricCounters(null);

        return (Integer.valueOf(mc.threadsLowWater));
    }

    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.createServiceConfig(service);

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

        return (oNames);
    }

    public void pause() throws MBeanException {
        try {
            logger.log(Logger.INFO, "Pausing all services");
            ServiceUtil.pauseService(null);
        } catch (BrokerException e) {
            handleOperationException(ServiceOperations.PAUSE, e);
        }
    }

    public void resume() throws MBeanException {
        try {
            logger.log(Logger.INFO, "Resuming all services");
            ServiceUtil.resumeService(null);
        } catch (BrokerException e) {
            handleOperationException(ServiceOperations.RESUME, e);
        }
    }

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

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

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

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

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