OfflineIMServiceBase.cs

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/*
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 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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using System;
using System.Collections.Generic;
using System.Reflection;
using Nini.Config;
using OpenSim.Framework;
using OpenSim.Data;
using OpenSim.Services.Interfaces;
using OpenSim.Services.Base;

namespace OpenSim.OfflineIM
{
    public class OfflineIMServiceBase : ServiceBase
    {
        protected IOfflineIMData m_Database = null;

        public OfflineIMServiceBase(IConfigSource config)
            : base(config)
        {
            string dllName = String.Empty;
            string connString = String.Empty;
            string realm = "im_offline";

            //
            // Try reading the [DatabaseService] section, if it exists
            //
            IConfig dbConfig = config.Configs["DatabaseService"];
            if (dbConfig != null)
            {
                if (dllName == String.Empty)
                    dllName = dbConfig.GetString("StorageProvider", String.Empty);
                if (connString == String.Empty)
                    connString = dbConfig.GetString("ConnectionString", String.Empty);
            }

            //
            // [Messaging] section overrides [DatabaseService], if it exists
            //
            IConfig imConfig = config.Configs["Messaging"];
            if (imConfig != null)
            {
                dllName = imConfig.GetString("StorageProvider", dllName);
                connString = imConfig.GetString("ConnectionString", connString);
                realm = imConfig.GetString("Realm", realm);
            }

            //
            // We tried, but this doesn't exist. We can't proceed.
            //
            if (dllName.Equals(String.Empty))
                throw new Exception("No StorageProvider configured");

            m_Database = LoadPlugin<IOfflineIMData>(dllName, new Object[] { connString, realm });
            if (m_Database == null)
                throw new Exception("Could not find a storage interface in the given module " + dllName);
        }
    }
}