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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * 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.
 *
 * GPL Classpath Exception:
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 * Modifications:
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package org.glassfish.web.admin.monitor;

import com.sun.enterprise.config.serverbeans.VirtualServer;
import org.glassfish.external.statistics.StringStatistic;
import org.glassfish.external.statistics.impl.StringStatisticImpl;
import org.glassfish.gmbal.AMXMetadata;
import org.glassfish.gmbal.Description;
import org.glassfish.gmbal.ManagedAttribute;
import org.glassfish.gmbal.ManagedObject;

@AMXMetadata(type="virtualserverinfo-mon", group="monitoring")
@ManagedObject
@Description("Virtual Server Statistics")
public class VirtualServerInfoStatsProvider {

    private static final String STATE_DESCRIPTION =
        "The state of the virtual server";

    private static final String HOSTS_DESCRIPTION =
        "The host (alias) names of the virtual server";

    private static final String ID_DESCRIPTION =
        "The id of the virtual server";

    private static final String MODE_DESCRIPTION =
        "The mode of the virtual server";

    private VirtualServer host;

    private StringStatisticImpl state = new StringStatisticImpl(
        "State", "String", STATE_DESCRIPTION);

    private StringStatisticImpl hosts = new StringStatisticImpl(
        "Hosts", "String", HOSTS_DESCRIPTION);

    private StringStatisticImpl id = new StringStatisticImpl(
        "Id", "String", ID_DESCRIPTION);

    private StringStatisticImpl mode = new StringStatisticImpl(
        "Mode", "String", MODE_DESCRIPTION);
    
    public VirtualServerInfoStatsProvider(VirtualServer host) {
        this.host = host;
    }

    @ManagedAttribute(id="state")
    @Description(STATE_DESCRIPTION)
    public StringStatistic getState() {
        state.setCurrent(host.getState());
        return state;
    }

    @ManagedAttribute(id="hosts")
    @Description(HOSTS_DESCRIPTION)
    public StringStatistic getHosts() {
        hosts.setCurrent(host.getHosts());
        return hosts;
    }  

    @ManagedAttribute(id="id")
    @Description(ID_DESCRIPTION)
    public StringStatistic getId() {
        id.setCurrent(host.getId());
        return id;
    }

    @ManagedAttribute(id="mode")
    @Description(MODE_DESCRIPTION)
    public StringStatistic getMode() {
        mode.setCurrent(host.getState().equals("on") ? "active" : "unknown");
        return mode;
    }
}