Moved the map tile processing used by the Simian Grid

Frontend into a separate region module. Configuration
settings added to the defaults ini file. Others may find
this useful for pushing map tiles to a separate server.

1 files changed, 261 insertions, 0 deletions

diff --git a/OpenSim/Services/Connectors/SimianGrid/SimianGridMaptileModule.cs b/OpenSim/Services/Connectors/SimianGrid/SimianGridMaptileModule.cs
new file mode 100644
index 0000000..dd8fe2b
--- /dev/null
+++ b/OpenSim/Services/Connectors/SimianGrid/SimianGridMaptileModule.cs
@@ -0,0 +1,261 @@
+/*
+ * 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.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
+{
+    /// <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;
+
+            m_refreshtime = Convert.ToInt32(config.GetString("RefreshTime"));
+            if (m_refreshtime <= 0)
+                return;
+
+            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
+            byte[] pngData = Utils.EmptyBytes;
+            IMapImageGenerator tileGenerator = scene.RequestModuleInterface<IMapImageGenerator>();
+            if (tileGenerator == null)
+            {
+                m_log.Warn("[SIMIAN MAPTILE]: Cannot upload PNG map tile without an ImageGenerator");
+                return;
+            }
+
+            using (Image mapTile = tileGenerator.CreateMapTile())
+            {
+                using (MemoryStream stream = new MemoryStream())
+                {
+                    mapTile.Save(stream, ImageFormat.Png);
+                    pngData = stream.ToArray();
+                }
+            }
+
+            List<MultipartForm.Element> postParameters = new List<MultipartForm.Element>()
+            {
+                new MultipartForm.Parameter("X", scene.RegionInfo.RegionLocX.ToString()),
+                new MultipartForm.Parameter("Y", scene.RegionInfo.RegionLocY.ToString()),
+                new MultipartForm.File("Tile", "tile.png", "image/png", pngData)
+            };
+
+            string errorMessage = null;
+            int tickstart = Util.EnvironmentTickCount();
+
+            // Make the remote storage request
+            try
+            {
+                HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(m_serverUrl);
+                request.Timeout = 20000;
+                request.ReadWriteTimeout = 5000;
+                
+                using (HttpWebResponse response = MultipartForm.Post(request, postParameters))
+                {
+                    using (Stream responseStream = response.GetResponseStream())
+                    {
+                        string responseStr = responseStream.GetStreamString();
+                        OSD responseOSD = OSDParser.Deserialize(responseStr);
+                        if (responseOSD.Type == OSDType.Map)
+                        {
+                            OSDMap responseMap = (OSDMap)responseOSD;
+                            if (responseMap["Success"].AsBoolean())
+                                return;
+
+                            errorMessage = "Upload failed: " + responseMap["Message"].AsString();
+                        }
+                        else
+                        {
+                            errorMessage = "Response format was invalid:\n" + responseStr;
+                        }
+                    }
+                }
+            }
+            catch (WebException we)
+            {
+                errorMessage = we.Message;
+                if (we.Status == WebExceptionStatus.ProtocolError)
+                {
+                    HttpWebResponse webResponse = (HttpWebResponse)we.Response;
+                    errorMessage = String.Format("[{0}] {1}",
+                                                 webResponse.StatusCode,webResponse.StatusDescription);
+                }
+            }
+            catch (Exception ex)
+            {
+                errorMessage = ex.Message;
+            }
+            finally
+            {
+                // This just dumps a warning for any operation that takes more than 100 ms
+                int tickdiff = Util.EnvironmentTickCountSubtract(tickstart);
+                m_log.DebugFormat("[SIMIAN MAPTILE]: map tile uploaded in {0}ms",tickdiff);
+            }
+
+            m_log.WarnFormat("[SIMIAN MAPTILE]: Failed to store {0} byte tile for {1}: {2}",
+                             pngData.Length, scene.RegionInfo.RegionName, errorMessage);
+        }
+    }
+}
\ No newline at end of file