opensim/OpenSim/Data/MSSQL/MSSQLPresenceData.cs

/*
 * Copyright (c) Contributors, http://opensimulator.org/
 * 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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 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
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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
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System;
using System.Collections.Generic;
using System.Data;
using System.Reflection;
using System.Threading;
using log4net;
using OpenMetaverse;
using OpenSim.Framework;
using System.Data.SqlClient;

namespace OpenSim.Data.MSSQL
{
    /// <summary>
    /// A MySQL Interface for the Presence Server
    /// </summary>
    public class MSSQLPresenceData : MSSQLGenericTableHandler<PresenceData>,
            IPresenceData
    {
        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        public MSSQLPresenceData(string connectionString, string realm) :
                base(connectionString, realm, "Presence")
        {
        }

        public PresenceData Get(UUID sessionID)
        {
            PresenceData[] ret = Get("SessionID",
                    sessionID.ToString());

            if (ret.Length == 0)
                return null;

            return ret[0];
        }

        public void LogoutRegionAgents(UUID regionID)
        {
            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
            using (SqlCommand cmd = new SqlCommand())
            {

                cmd.CommandText = String.Format("UPDATE {0} SET Online='false' WHERE [RegionID]=@RegionID", m_Realm);

                cmd.Parameters.Add(m_database.CreateParameter("@RegionID", regionID.ToString()));
                cmd.Connection = conn;
                conn.Open();
                cmd.ExecuteNonQuery();
            }
        }

        public bool ReportAgent(UUID sessionID, UUID regionID, string position,
                string lookAt)
        {
            PresenceData[] pd = Get("SessionID", sessionID.ToString());
            if (pd.Length == 0)
                return false;

            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
            using (SqlCommand cmd = new SqlCommand())
            {

                cmd.CommandText = String.Format(@"UPDATE {0} SET 
                                                [RegionID] = @RegionID, 
                                                [Position] = @Position, 
                                                [LookAt] = @LookAt, 
                                                [Online] = 'true'
                                        WHERE [SessionID] = @SessionID", m_Realm);

                cmd.Parameters.Add(m_database.CreateParameter("@SessionID", sessionID.ToString()));
                cmd.Parameters.Add(m_database.CreateParameter("@RegionID", regionID.ToString()));
                cmd.Parameters.Add(m_database.CreateParameter("@Position", position.ToString()));
                cmd.Parameters.Add(m_database.CreateParameter("@LookAt", lookAt.ToString()));
                cmd.Connection = conn;
                conn.Open();
                if (cmd.ExecuteNonQuery() == 0)
                    return false;
            }
            return true;
        }

        public bool SetHomeLocation(string userID, UUID regionID, Vector3 position, Vector3 lookAt)
        {
            PresenceData[] pd = Get("UserID", userID);
            if (pd.Length == 0)
                return false;

            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
            using (SqlCommand cmd = new SqlCommand())
            {

                cmd.CommandText = String.Format(@"UPDATE {0} SET 
                                                [HomeRegionID] = @HomeRegionID, 
                                                [HomePosition] = @HomePosition, 
                                                [HomeLookAt] = @HomeLookAt 
                                            WHERE [UserID] = @UserID", m_Realm);

                cmd.Parameters.Add(m_database.CreateParameter("@UserID", userID));
                cmd.Parameters.Add(m_database.CreateParameter("@HomeRegionID", regionID.ToString()));
                cmd.Parameters.Add(m_database.CreateParameter("@HomePosition", position));
                cmd.Parameters.Add(m_database.CreateParameter("@HomeLookAt", lookAt));
                cmd.Connection = conn;
                conn.Open();
                if (cmd.ExecuteNonQuery() == 0)
                    return false;
            }
            return true;
        }

        public void Prune(string userID)
        {
            using (SqlConnection conn = new SqlConnection(m_ConnectionString))
            using (SqlCommand cmd = new SqlCommand())
            {
                cmd.CommandText = String.Format("SELECT * from {0} WHERE [UserID] = @UserID", m_Realm);

                cmd.Parameters.Add(m_database.CreateParameter("@UserID", userID));
                cmd.Connection = conn;
                conn.Open();

                using (SqlDataReader reader = cmd.ExecuteReader())
                {
                    List<UUID> deleteSessions = new List<UUID>();
                    int online = 0;

                    while (reader.Read())
                    {
                        if (bool.Parse(reader["Online"].ToString()))
                            online++;
                        else
                            deleteSessions.Add(new UUID(reader["SessionID"].ToString()));
                    }

                    if (online == 0 && deleteSessions.Count > 0)
                        deleteSessions.RemoveAt(0);

                    foreach (UUID s in deleteSessions)
                        Delete("SessionID", s.ToString());
                }
            }
        }
    }
}