opensim – Rev 1
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/*
* 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:
* * Redistributions of source code must retain the above copyright
* 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.
* * Neither the name of the OpenSimulator Project nor the
* 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;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Reflection;
using System.Net;
using System.IO;
using System.Timers;
using System.Drawing;
using System.Drawing.Imaging;
using log4net;
using Mono.Addins;
using Nini.Config;
using OpenSim.Framework;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
//namespace OpenSim.Region.OptionalModules.Simian
namespace OpenSim.Services.Connectors.SimianGrid
{
/// <summary>
/// </summary>
/// <remarks>
/// </remarks>
[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "SimianGridMaptile")]
public class SimianGridMaptile : ISharedRegionModule
{
private static readonly ILog m_log =
LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private bool m_enabled = false;
private string m_serverUrl = String.Empty;
private Dictionary<UUID, Scene> m_scenes = new Dictionary<UUID, Scene>();
private int m_refreshtime = 0;
private int m_lastrefresh = 0;
private System.Timers.Timer m_refreshTimer = new System.Timers.Timer();
#region ISharedRegionModule
public Type ReplaceableInterface { get { return null; } }
public string Name { get { return "SimianGridMaptile"; } }
public void RegionLoaded(Scene scene) { }
public void Close() { }
///<summary>
///
///</summary>
public void Initialise(IConfigSource source)
{
IConfig config = source.Configs["SimianGridMaptiles"];
if (config == null)
return;
if (! config.GetBoolean("Enabled", false))
return;
m_serverUrl = config.GetString("MaptileURL");
if (String.IsNullOrEmpty(m_serverUrl))
return;
int refreshseconds = Convert.ToInt32(config.GetString("RefreshTime"));
if (refreshseconds <= 0)
return;
m_refreshtime = refreshseconds * 1000; // convert from seconds to ms
m_log.InfoFormat("[SIMIAN MAPTILE] enabled with refresh timeout {0} and URL {1}",
m_refreshtime,m_serverUrl);
m_enabled = true;
}
///<summary>
///
///</summary>
public void PostInitialise()
{
if (m_enabled)
{
m_refreshTimer.Enabled = true;
m_refreshTimer.AutoReset = true;
m_refreshTimer.Interval = 5 * 60 * 1000; // every 5 minutes
m_refreshTimer.Elapsed += new ElapsedEventHandler(HandleMaptileRefresh);
}
}
///<summary>
///
///</summary>
public void AddRegion(Scene scene)
{
if (! m_enabled)
return;
// Every shared region module has to maintain an indepedent list of
// currently running regions
lock (m_scenes)
m_scenes[scene.RegionInfo.RegionID] = scene;
}
///<summary>
///
///</summary>
public void RemoveRegion(Scene scene)
{
if (! m_enabled)
return;
lock (m_scenes)
m_scenes.Remove(scene.RegionInfo.RegionID);
}
#endregion ISharedRegionModule
///<summary>
///
///</summary>
private void HandleMaptileRefresh(object sender, EventArgs ea)
{
// this approach is a bit convoluted becase we want to wait for the
// first upload to happen on startup but after all the objects are
// loaded and initialized
if (m_lastrefresh > 0 && Util.EnvironmentTickCountSubtract(m_lastrefresh) < m_refreshtime)
return;
m_log.DebugFormat("[SIMIAN MAPTILE] map refresh fired");
lock (m_scenes)
{
foreach (IScene scene in m_scenes.Values)
{
try
{
UploadMapTile(scene);
}
catch (Exception ex)
{
m_log.WarnFormat("[SIMIAN MAPTILE] something bad happened {0}",ex.Message);
}
}
}
m_lastrefresh = Util.EnvironmentTickCount();
}
///<summary>
///
///</summary>
private void UploadMapTile(IScene scene)
{
m_log.DebugFormat("[SIMIAN MAPTILE]: upload maptile for {0}",scene.RegionInfo.RegionName);
// Create a PNG map tile and upload it to the AddMapTile API
IMapImageGenerator tileGenerator = scene.RequestModuleInterface<IMapImageGenerator>();
if (tileGenerator == null)
{
m_log.Warn("[SIMIAN MAPTILE]: Cannot upload PNG map tile without an ImageGenerator");
return;
}
using (Bitmap mapTile = tileGenerator.CreateMapTile())
{
if (mapTile != null)
{
// If the region/maptile is legacy sized, just upload the one tile like it has always been done
if (mapTile.Width == Constants.RegionSize && mapTile.Height == Constants.RegionSize)
{
ConvertAndUploadMaptile(mapTile, scene.RegionInfo.RegionLocX, scene.RegionInfo.RegionLocY);
}
else
{
// For larger regions (varregion) we must cut the region image into legacy sized
// pieces since that is how the maptile system works.
// Note the assumption that varregions are always a multiple of legacy size.
for (uint xx = 0; xx < mapTile.Width; xx += Constants.RegionSize)
{
for (uint yy = 0; yy < mapTile.Height; yy += Constants.RegionSize)
{
// Images are addressed from the upper left corner so have to do funny
// math to pick out the sub-tile since regions are numbered from
// the lower left.
Rectangle rect = new Rectangle(
(int)xx,
mapTile.Height - (int)yy - (int)Constants.RegionSize,
(int)Constants.RegionSize, (int)Constants.RegionSize);
using (Bitmap subMapTile = mapTile.Clone(rect, mapTile.PixelFormat))
{
uint locX = scene.RegionInfo.RegionLocX + (xx / Constants.RegionSize);
uint locY = scene.RegionInfo.RegionLocY + (yy / Constants.RegionSize);
ConvertAndUploadMaptile(subMapTile, locX, locY);
}
}
}
}
}
else
{
m_log.WarnFormat("[SIMIAN MAPTILE] Tile image generation failed");
}
}
}
///<summary>
///
///</summary>
private void ConvertAndUploadMaptile(Image mapTile, uint locX, uint locY)
{
//m_log.DebugFormat("[SIMIAN MAPTILE]: upload maptile for location {0}, {1}", locX, locY);
byte[] pngData = Utils.EmptyBytes;
using (MemoryStream stream = new MemoryStream())
{
mapTile.Save(stream, ImageFormat.Png);
pngData = stream.ToArray();
}
NameValueCollection requestArgs = new NameValueCollection
{
{ "RequestMethod", "xAddMapTile" },
{ "X", locX.ToString() },
{ "Y", locY.ToString() },
{ "ContentType", "image/png" },
{ "EncodedData", System.Convert.ToBase64String(pngData) }
};
OSDMap response = SimianGrid.PostToService(m_serverUrl,requestArgs);
if (! response["Success"].AsBoolean())
{
m_log.WarnFormat("[SIMIAN MAPTILE] failed to store map tile; {0}",response["Message"].AsString());
}
}
}
}
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