6 files changed, 126 insertions, 11 deletions

diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/HGGridConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/HGGridConnector.cs
index 52db400..c8062d7 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/HGGridConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/HGGridConnector.cs
@@ -135,6 +135,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         public void PostInitialise()
         {
+            ((ISharedRegionModule)m_GridServiceConnector).PostInitialise();
         }
 
         public void Close()
@@ -150,11 +151,14 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             scene.RegisterModuleInterface<IGridService>(this);
             scene.RegisterModuleInterface<IHyperlinkService>(this);
 
+            ((ISharedRegionModule)m_GridServiceConnector).AddRegion(scene);
+
         }
 
         public void RemoveRegion(Scene scene)
         {
             m_LocalScenes.Remove(scene.RegionInfo.RegionHandle);
+            ((ISharedRegionModule)m_GridServiceConnector).RemoveRegion(scene);
         }
 
         public void RegionLoaded(Scene scene)
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs
index 743d3b9..6c2928a 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/LocalGridServiceConnector.cs
@@ -31,6 +31,7 @@ using System;
 using System.Collections.Generic;
 using System.Reflection;
 using OpenSim.Framework;
+using OpenSim.Framework.Console;
 using OpenSim.Server.Base;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
@@ -47,7 +48,10 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                 LogManager.GetLogger(
                 MethodBase.GetCurrentMethod().DeclaringType);
 
+        private static LocalGridServicesConnector m_MainInstance;
+
         private IGridService m_GridService;
+        private Dictionary<UUID, RegionCache> m_LocalCache = new Dictionary<UUID, RegionCache>();
 
         private bool m_Enabled = false;
 
@@ -58,6 +62,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         public LocalGridServicesConnector(IConfigSource source)
         {
             m_log.Debug("[LOCAL GRID CONNECTOR]: LocalGridServicesConnector instantiated");
+            m_MainInstance = this;
             InitialiseService(source);
         }
 
@@ -82,6 +87,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
                 if (name == Name)
                 {
                     InitialiseService(source);
+                    m_MainInstance = this;
                     m_Enabled = true;
                     m_log.Info("[LOCAL GRID CONNECTOR]: Local grid connector enabled");
                 }
@@ -120,6 +126,12 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         public void PostInitialise()
         {
+            if (m_MainInstance == this)
+            {
+                MainConsole.Instance.Commands.AddCommand("LocalGridConnector", false, "show neighbours",
+                    "show neighbours",
+                    "Shows the local regions' neighbours", NeighboursCommand);
+            }
         }
 
         public void Close()
@@ -128,14 +140,26 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         public void AddRegion(Scene scene)
         {
-            if (!m_Enabled)
-                return;
+            if (m_Enabled)
+                scene.RegisterModuleInterface<IGridService>(this);
+
+            if (m_MainInstance == this)
+            {
+                if (m_LocalCache.ContainsKey(scene.RegionInfo.RegionID))
+                    m_log.ErrorFormat("[LOCAL GRID CONNECTOR]: simulator seems to have more than one region with the same UUID. Please correct this!");
+                else
+                    m_LocalCache.Add(scene.RegionInfo.RegionID, new RegionCache(scene));
 
-            scene.RegisterModuleInterface<IGridService>(this);
+            }
         }
 
         public void RemoveRegion(Scene scene)
         {
+            if (m_MainInstance == this)
+            {
+                m_LocalCache[scene.RegionInfo.RegionID].Clear();
+                m_LocalCache.Remove(scene.RegionInfo.RegionID);
+            }
         }
 
         public void RegionLoaded(Scene scene)
@@ -158,7 +182,18 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         public List<GridRegion> GetNeighbours(UUID scopeID, UUID regionID)
         {
-            return m_GridService.GetNeighbours(scopeID, regionID);
+            if (m_LocalCache.ContainsKey(regionID))
+            {
+                return m_LocalCache[regionID].GetNeighbours();
+            }
+            else
+            {
+                m_log.WarnFormat("[LOCAL GRID CONNECTOR]: GetNeighbours: Requested region {0} is not on this sim", regionID);
+                return new List<GridRegion>();
+            }
+
+            // Don't go to the DB
+            //return m_GridService.GetNeighbours(scopeID, regionID);
         }
 
         public GridRegion GetRegionByUUID(UUID scopeID, UUID regionID)
@@ -187,5 +222,16 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
         }
 
         #endregion
+
+        public void NeighboursCommand(string module, string[] cmdparams)
+        {
+            foreach (KeyValuePair<UUID, RegionCache> kvp in m_LocalCache)
+            {
+                m_log.InfoFormat("*** Neighbours of {0} {1} ***", kvp.Key, kvp.Value.RegionName);
+                List<GridRegion> regions = kvp.Value.GetNeighbours();
+                foreach (GridRegion r in regions)
+                    m_log.InfoFormat("    {0} @ {1}={2}", r.RegionName, r.RegionLocX / Constants.RegionSize, r.RegionLocY / Constants.RegionSize);
+            }
+        }
     }
 }
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs
new file mode 100644
index 0000000..ea205a2
--- /dev/null
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RegionCache.cs
@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Services.Interfaces;
+using GridRegion = OpenSim.Services.Interfaces.GridRegion;
+
+using log4net;
+
+namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
+{
+    public class RegionCache
+    {
+        private static readonly ILog m_log =
+                LogManager.GetLogger(
+                MethodBase.GetCurrentMethod().DeclaringType);
+
+        private Scene m_scene;
+        private Dictionary<ulong, GridRegion> m_neighbours = new Dictionary<ulong, GridRegion>();
+
+        public string RegionName
+        {
+            get { return m_scene.RegionInfo.RegionName; }
+        }
+
+        public RegionCache(Scene s)
+        {
+            m_scene = s;
+            m_scene.EventManager.OnRegionUp += OnRegionUp;
+        }
+
+        private void OnRegionUp(GridRegion otherRegion)
+        {
+            m_log.DebugFormat("[REGION CACHE]: (on region {0}) Region {1} is up @ {2}-{3}",
+                m_scene.RegionInfo.RegionName, otherRegion.RegionName, otherRegion.RegionLocX, otherRegion.RegionLocY);
+
+            m_neighbours[otherRegion.RegionHandle] = otherRegion;
+        }
+
+        public void Clear()
+        {
+            m_scene.EventManager.OnRegionUp -= OnRegionUp;
+            m_neighbours.Clear();
+        }
+
+        public List<GridRegion> GetNeighbours()
+        {
+            return new List<GridRegion>(m_neighbours.Values);
+        }
+    }
+}
diff --git a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RemoteGridServiceConnector.cs b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RemoteGridServiceConnector.cs
index 91a808b..72c00fc 100644
--- a/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RemoteGridServiceConnector.cs
+++ b/OpenSim/Region/CoreModules/ServiceConnectorsOut/Grid/RemoteGridServiceConnector.cs
@@ -104,6 +104,8 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         public void PostInitialise()
         {
+            if (m_LocalGridService != null)
+                ((ISharedRegionModule)m_LocalGridService).PostInitialise();
         }
 
         public void Close()
@@ -112,14 +114,17 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
 
         public void AddRegion(Scene scene)
         {
-            if (!m_Enabled)
-                return;
+            if (m_Enabled)
+                scene.RegisterModuleInterface<IGridService>(this);
 
-            scene.RegisterModuleInterface<IGridService>(this);
+            if (m_LocalGridService != null)
+                ((ISharedRegionModule)m_LocalGridService).AddRegion(scene);
         }
 
         public void RemoveRegion(Scene scene)
         {
+            if (m_LocalGridService != null)
+                ((ISharedRegionModule)m_LocalGridService).RemoveRegion(scene);
         }
 
         public void RegionLoaded(Scene scene)
@@ -146,7 +151,13 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
             return false;
         }
 
-        // Let's not override GetNeighbours -- let's get them all from the grid server
+        // Let's override GetNeighbours completely -- never go to the grid server
+        // Neighbours are/should be cached locally
+        // For retrieval from the DB, caller should call GetRegionByPosition
+        public override List<GridRegion> GetNeighbours(UUID scopeID, UUID regionID)
+        {
+            return m_LocalGridService.GetNeighbours(scopeID, regionID);
+        }
 
         public override GridRegion GetRegionByUUID(UUID scopeID, UUID regionID)
         {
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index 55478da..bb47ff4 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -611,6 +611,9 @@ namespace OpenSim.Region.Framework.Scenes
                 int resultY = Math.Abs((int)ycell - (int)RegionInfo.RegionLocY);
                 if (resultX <= 1 && resultY <= 1)
                 {
+                    // Let the grid service module know, so this can be cached
+                    m_eventManager.TriggerOnRegionUp(otherRegion);
+
                     RegionInfo regInfo = new RegionInfo(xcell, ycell, otherRegion.InternalEndPoint, otherRegion.ExternalHostName);
                     regInfo.RegionID = otherRegion.RegionID;
                     regInfo.RegionName = otherRegion.RegionName;
@@ -641,6 +644,7 @@ namespace OpenSim.Region.Framework.Scenes
                         // This shouldn't happen too often anymore.
                         m_log.Error("[SCENE]: Couldn't inform client of regionup because we got a null reference exception");
                     }
+
                 }
                 else
                 {
diff --git a/OpenSim/Region/Framework/Scenes/SceneCommunicationService.cs b/OpenSim/Region/Framework/Scenes/SceneCommunicationService.cs
index 3294ceb..4a2db5e 100644
--- a/OpenSim/Region/Framework/Scenes/SceneCommunicationService.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneCommunicationService.cs
@@ -455,14 +455,12 @@ namespace OpenSim.Region.Framework.Scenes
             // So we're temporarily going back to the old method of grabbing it from the Grid Server Every time :/
             if (m_regionInfo != null)
             {
-                neighbours =
-                RequestNeighbours(avatar.Scene,m_regionInfo.RegionLocX, m_regionInfo.RegionLocY);
+                neighbours = RequestNeighbours(avatar.Scene,m_regionInfo.RegionLocX, m_regionInfo.RegionLocY);
             }
             else
             {
                 m_log.Debug("[ENABLENEIGHBOURCHILDAGENTS]: m_regionInfo was null in EnableNeighbourChildAgents, is this a NPC?");
             }
-            
 
             /// We need to find the difference between the new regions where there are no child agents
             /// and the regions where there are already child agents. We only send notification to the former.