Add delete maptile ability to MapImageService - yet untested

OpenSim/Services/Connectors/MapImage/MapImageServicesConnector.cs

@@ -86,6 +86,66 @@ namespace OpenSim.Services.Connectors
             m_ServerURI = serviceURI.TrimEnd('/');
         }
 
+        public bool RemoveMapTile(int x, int y, out string reason)
+        {
+            reason = string.Empty;
+            int tickstart = Util.EnvironmentTickCount();
+            Dictionary<string, object> sendData = new Dictionary<string, object>();
+            sendData["X"] = x.ToString();
+            sendData["Y"] = y.ToString();
+
+            string reqString = ServerUtils.BuildQueryString(sendData);
+            string uri = m_ServerURI + "/removemap";
+
+            try
+            {
+                string reply = SynchronousRestFormsRequester.MakeRequest("POST",
+                        uri,
+                        reqString);
+                if (reply != string.Empty)
+                {
+                    Dictionary<string, object> replyData = ServerUtils.ParseXmlResponse(reply);
+
+                    if (replyData.ContainsKey("Result") && (replyData["Result"].ToString().ToLower() == "success"))
+                    {
+                        return true;
+                    }
+                    else if (replyData.ContainsKey("Result") && (replyData["Result"].ToString().ToLower() == "failure"))
+                    {
+                        m_log.DebugFormat("[MAP IMAGE CONNECTOR]: Delete failed: {0}", replyData["Message"].ToString());
+                        reason = replyData["Message"].ToString();
+                        return false;
+                    }
+                    else if (!replyData.ContainsKey("Result"))
+                    {
+                        m_log.DebugFormat("[MAP IMAGE CONNECTOR]: reply data does not contain result field");
+                    }
+                    else
+                    {
+                        m_log.DebugFormat("[MAP IMAGE CONNECTOR]: unexpected result {0}", replyData["Result"].ToString());
+                        reason = "Unexpected result " + replyData["Result"].ToString();
+                    }
+
+                }
+                else
+                {
+                    m_log.DebugFormat("[MAP IMAGE CONNECTOR]: Map post received null reply");
+                }
+            }
+            catch (Exception e)
+            {
+                m_log.DebugFormat("[MAP IMAGE CONNECTOR]: Exception when contacting map server at {0}: {1}", uri, e.Message);
+            }
+            finally
+            {
+                // This just dumps a warning for any operation that takes more than 100 ms
+                int tickdiff = Util.EnvironmentTickCountSubtract(tickstart);
+                m_log.DebugFormat("[MAP IMAGE CONNECTOR]: map tile deleted in {0}ms", tickdiff);
+            }
+
+            return false;
+        }
+
         public bool AddMapTile(int x, int y, byte[] jpgData, out string reason)
         {
             reason = string.Empty;

OpenSim/Services/Interfaces/IMapImageService.cs

@@ -35,6 +35,7 @@ namespace OpenSim.Services.Interfaces
     {
         //List<MapBlockData> GetMapBlocks(UUID scopeID, int minX, int minY, int maxX, int maxY);
         bool AddMapTile(int x, int y, byte[] imageData, out string reason);
+        bool RemoveMapTile(int x, int y, out string reason);
         byte[] GetMapTile(string fileName, out string format);
     }
 }

OpenSim/Services/MapImageService/MapImageService.cs

@@ -112,9 +112,38 @@ namespace OpenSim.Services.MapImageService
                     reason = e.Message;
                     return false;
                 }
+            }
 
-                // Also save in png format?
+            return UpdateMultiResolutionFiles(x, y, out reason);
+        }
 
+        public bool RemoveMapTile(int x, int y, out string reason)
+        {
+            reason = String.Empty;
+            string fileName = GetFileName(1, x, y);
+
+            lock (m_Sync)
+            {
+                try
+                {
+                    File.Delete(fileName);
+                }
+                catch (Exception e)
+                {
+                    m_log.WarnFormat("[MAP IMAGE SERVICE]: Unable to save delete file {0}: {1}", fileName, e);
+                    reason = e.Message;
+                    return false;
+                }
+            }
+
+            return UpdateMultiResolutionFiles(x, y, out reason);
+        }
+
+        private bool UpdateMultiResolutionFiles(int x, int y, out string reason)
+        {
+            reason = String.Empty;
+            lock (m_Sync)
+            {
                 // Stitch seven more aggregate tiles together
                 for (uint zoomLevel = 2; zoomLevel <= ZOOM_LEVELS; zoomLevel++)
                 {
@@ -126,7 +155,7 @@ namespace OpenSim.Services.MapImageService
 
                     if (!CreateTile(zoomLevel, x1, y1))
                     {
-                        m_log.WarnFormat("[MAP IMAGE SERVICE]: Unable to create tile for {0} at zoom level {1}", fileName, zoomLevel);
+                        m_log.WarnFormat("[MAP IMAGE SERVICE]: Unable to create tile for {0},{1} at zoom level {1}", x, y, zoomLevel);
                         reason = string.Format("Map tile at zoom level {0} failed", zoomLevel);
                         return false;
                     }