Added support for OpenSim application plugins (as requested by Adam), which use Mono.addins for loading/management. (which is a pure .net solution so works on both Mono and MS .net, and is under the MIT license, will add the source code for the library later). I also suggest we look into switching to using Mono.addins for our Region module loading management.

A little bit more refactoring of Scene.

OpenSim/Region/Application/OpenSimMain.cs

@@ -44,7 +44,8 @@ using OpenSim.Region.Environment;
 using OpenSim.Region.Environment.Interfaces;
 using OpenSim.Region.Environment.Scenes;
 using OpenSim.Region.Physics.Manager;
-
+using Mono.Addins;
+using Mono.Addins.Description;
 
 namespace OpenSim
 {
@@ -93,6 +94,8 @@ namespace OpenSim
             : base()
         {
             IConfig startupConfig = configSource.Configs["Startup"];
+			
+            AddinManager.Initialize(".");
 
             string iniFilePath = startupConfig.GetString("inifile", "OpenSim.ini");
 
@@ -275,6 +278,13 @@ namespace OpenSim
                 m_httpServer.AddStreamHandler(new SimStatusHandler());
             }
 
+            MainLog.Instance.Verbose("Plugins", "Loading OpenSim application plugins");
+            foreach (TypeExtensionNode node in AddinManager.GetExtensionNodes("/OpenSim/Startup"))
+            {
+                IApplicationPlugin plugin = (IApplicationPlugin)node.CreateInstance();
+                plugin.Initialise(this);
+            }
+
             IRegionLoader regionLoader;
             if (m_config.Configs["Startup"].GetString("region_info_source", "filesystem") == "filesystem")
             {

OpenSim/Region/Environment/Modules/DynamicTextureModule.cs

@@ -177,7 +177,7 @@ namespace OpenSim.Region.Environment.Modules
                 asset.Description = "dynamic image";
                 asset.Local = false;
                 asset.Temporary = false;
-                scene.commsManager.AssetCache.AddAsset(asset);
+                scene.AssetCache.AddAsset(asset);
 
                 LastAssetID = asset.FullID;
 

OpenSim/Region/Environment/Modules/TextureDownloadModule.cs

@@ -128,7 +128,7 @@ namespace OpenSim.Region.Environment.Modules
                     AssetRequest request = new AssetRequest(client, e.RequestedAssetID, e.DiscardLevel, e.PacketNumber);
                     ClientRequests[client.AgentId].Add(e.RequestedAssetID, request);
                 }
-                m_scene.commsManager.AssetCache.GetAsset(e.RequestedAssetID, TextureCallback);
+                m_scene.AssetCache.GetAsset(e.RequestedAssetID, TextureCallback);
             }
         }
 

OpenSim/Region/Environment/Scenes/InnerScene.cs

@@ -91,8 +91,6 @@ namespace OpenSim.Region.Environment.Scenes
             }
             else
             {
-                //newAvatar.OnSignificantClientMovement += m_LandManager.handleSignificantClientMovement;
-
                 MainLog.Instance.Verbose("SCENE", m_regInfo.RegionName + ": Creating new root agent.");
                 MainLog.Instance.Verbose("SCENE", m_regInfo.RegionName + ": Adding Physical agent.");
 

OpenSim/Region/Environment/Scenes/Scene.Inventory.cs

@@ -52,7 +52,7 @@ namespace OpenSim.Region.Environment.Scenes
 
         public void AddInventoryItem(IClientAPI remoteClient, InventoryItemBase item)
         {
-            CachedUserInfo userInfo = commsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
+            CachedUserInfo userInfo = CommsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
             if (userInfo != null)
             {
                 userInfo.AddItem(remoteClient.AgentId, item);
@@ -74,7 +74,7 @@ namespace OpenSim.Region.Environment.Scenes
 
         public LLUUID CapsUpdateInventoryItemAsset(IClientAPI remoteClient, LLUUID itemID, byte[] data)
         {
-            CachedUserInfo userInfo = commsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
+            CachedUserInfo userInfo = CommsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
             if (userInfo != null)
             {
                 if (userInfo.RootFolder != null)
@@ -89,7 +89,7 @@ namespace OpenSim.Region.Environment.Scenes
                         asset.InvType = (sbyte) item.invType;
                         asset.Name = item.inventoryName;
                         asset.Data = data;
-                        commsManager.AssetCache.AddAsset(asset);
+                        AssetCache.AddAsset(asset);
 
                         item.assetID = asset.FullID;
                         userInfo.UpdateItem(remoteClient.AgentId, item);
@@ -114,7 +114,7 @@ namespace OpenSim.Region.Environment.Scenes
         public void UDPUpdateInventoryItemAsset(IClientAPI remoteClient, LLUUID transactionID, LLUUID assetID,
                                                 LLUUID itemID)
         {
-            CachedUserInfo userInfo = commsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
+            CachedUserInfo userInfo = CommsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
             if (userInfo != null)
             {
                 if (userInfo.RootFolder != null)
@@ -123,13 +123,13 @@ namespace OpenSim.Region.Environment.Scenes
                     if (item != null)
                     {
                         AgentAssetTransactions transactions =
-                            commsManager.TransactionsManager.GetUserTransActions(remoteClient.AgentId);
+                            CommsManager.TransactionsManager.GetUserTransActions(remoteClient.AgentId);
                         if (transactions != null)
                         {
                             AssetBase asset = null;
                             bool addToCache = false;
 
-                            asset = commsManager.AssetCache.GetAsset(assetID);
+                            asset = AssetCache.GetAsset(assetID);
                             if (asset == null)
                             {
                                 asset = transactions.GetTransactionAsset(transactionID);
@@ -148,7 +148,7 @@ namespace OpenSim.Region.Environment.Scenes
 
                                     if (addToCache)
                                     {
-                                        commsManager.AssetCache.AddAsset(asset);
+                                        AssetCache.AddAsset(asset);
                                     }
 
                                     userInfo.UpdateItem(remoteClient.AgentId, item);
@@ -179,7 +179,7 @@ namespace OpenSim.Region.Environment.Scenes
         {
             if (transActionID == LLUUID.Zero)
             {
-                CachedUserInfo userInfo = commsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
+                CachedUserInfo userInfo = CommsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
                 if (userInfo != null)
                 {
                     AssetBase asset = new AssetBase();
@@ -189,7 +189,7 @@ namespace OpenSim.Region.Environment.Scenes
                     asset.Type = type;
                     asset.FullID = LLUUID.Random();
                     asset.Data = new byte[1];
-                    commsManager.AssetCache.AddAsset(asset);
+                    AssetCache.AddAsset(asset);
 
                     InventoryItemBase item = new InventoryItemBase();
                     item.avatarID = remoteClient.AgentId;
@@ -210,7 +210,7 @@ namespace OpenSim.Region.Environment.Scenes
             }
             else
             {
-                commsManager.TransactionsManager.HandleInventoryFromTransaction(remoteClient, transActionID, folderID,
+                CommsManager.TransactionsManager.HandleInventoryFromTransaction(remoteClient, transActionID, folderID,
                                                                                 callbackID, description, name, invType,
                                                                                 type, wearableType, nextOwnerMask);
                 //System.Console.WriteLine("request to create inventory item from transaction " + transActionID);
@@ -269,7 +269,7 @@ namespace OpenSim.Region.Environment.Scenes
 
         public void RezScript(IClientAPI remoteClient, LLUUID itemID, uint localID)
         {
-            CachedUserInfo userInfo = commsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
+            CachedUserInfo userInfo = CommsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
             LLUUID copyID = LLUUID.Random();
             if (userInfo != null)
             {
@@ -284,7 +284,7 @@ namespace OpenSim.Region.Environment.Scenes
                         {
                             isTexture = true;
                         }
-                        AssetBase rezAsset = commsManager.AssetCache.GetAsset(item.assetID, isTexture);
+                        AssetBase rezAsset = AssetCache.GetAsset(item.assetID, isTexture);
                         if (rezAsset != null)
                         {
                             string script = Util.FieldToString(rezAsset.Data);
@@ -295,7 +295,7 @@ namespace OpenSim.Region.Environment.Scenes
                         else
                         {
                             //lets try once more incase the asset cache is being slow getting the asset from server
-                            rezAsset = commsManager.AssetCache.GetAsset(item.assetID, isTexture);
+                            rezAsset = AssetCache.GetAsset(item.assetID, isTexture);
                             if (rezAsset != null)
                             {
                                 string script = Util.FieldToString(rezAsset.Data);
@@ -360,7 +360,7 @@ namespace OpenSim.Region.Environment.Scenes
                         if (PermissionsMngr.CanDeRezObject(remoteClient.AgentId, ((SceneObjectGroup) selectedEnt).UUID))
                         {
                             string sceneObjectXml = ((SceneObjectGroup) selectedEnt).ToXmlString();
-                            CachedUserInfo userInfo = commsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
+                            CachedUserInfo userInfo = CommsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
                             if (userInfo != null)
                             {
                                 AssetBase asset = new AssetBase();
@@ -371,7 +371,7 @@ namespace OpenSim.Region.Environment.Scenes
                                 asset.Type = 6;
                                 asset.FullID = LLUUID.Random();
                                 asset.Data = Helpers.StringToField(sceneObjectXml);
-                                commsManager.AssetCache.AddAsset(asset);
+                                AssetCache.AddAsset(asset);
 
 
                                 InventoryItemBase item = new InventoryItemBase();
@@ -407,7 +407,7 @@ namespace OpenSim.Region.Environment.Scenes
                 rootPart.PhysActor = null;
             }
 
-            storageManager.DataStore.RemoveObject(group.UUID, m_regInfo.RegionID);
+            m_storageManager.DataStore.RemoveObject(group.UUID, m_regInfo.RegionID);
             group.DeleteGroup();
 
             lock (Entities)
@@ -419,7 +419,7 @@ namespace OpenSim.Region.Environment.Scenes
 
         public void RezObject(IClientAPI remoteClient, LLUUID itemID, LLVector3 pos)
         {
-            CachedUserInfo userInfo = commsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
+            CachedUserInfo userInfo = CommsManager.UserProfileCache.GetUserDetails(remoteClient.AgentId);
             if (userInfo != null)
             {
                 if (userInfo.RootFolder != null)
@@ -427,7 +427,7 @@ namespace OpenSim.Region.Environment.Scenes
                     InventoryItemBase item = userInfo.RootFolder.HasItem(itemID);
                     if (item != null)
                     {
-                        AssetBase rezAsset = commsManager.AssetCache.GetAsset(item.assetID, false);
+                        AssetBase rezAsset = AssetCache.GetAsset(item.assetID, false);
                         if (rezAsset != null)
                         {
                             AddRezObject(Util.FieldToString(rezAsset.Data), pos);
@@ -437,7 +437,7 @@ namespace OpenSim.Region.Environment.Scenes
                         else
                         {
                             //lets try once more incase the asset cache is being slow getting the asset from server
-                            rezAsset = commsManager.AssetCache.GetAsset(item.assetID, false);
+                            rezAsset = AssetCache.GetAsset(item.assetID, false);
                             if (rezAsset != null)
                             {
                                 AddRezObject(Util.FieldToString(rezAsset.Data), pos);

OpenSim/Region/Environment/Scenes/Scene.cs

@@ -70,13 +70,13 @@ namespace OpenSim.Region.Environment.Scenes
         private readonly Mutex updateLock;
 
         protected ModuleLoader m_moduleLoader;
-        protected StorageManager storageManager;
-        protected AgentCircuitManager authenticateHandler;
-        public CommunicationsManager commsManager;
+        protected StorageManager m_storageManager;
+        protected AgentCircuitManager m_authenticateHandler;
+        public CommunicationsManager CommsManager;
         // protected XferManager xferManager;
         protected SceneCommunicationService m_sceneGridService;
 
-        protected Dictionary<LLUUID, Caps> capsHandlers = new Dictionary<LLUUID, Caps>();
+        protected Dictionary<LLUUID, Caps> m_capsHandlers = new Dictionary<LLUUID, Caps>();
         protected BaseHttpServer httpListener;
 
         protected Dictionary<string, IRegionModule> Modules = new Dictionary<string, IRegionModule>();
@@ -116,7 +116,7 @@ namespace OpenSim.Region.Environment.Scenes
 
         public AgentCircuitManager AuthenticateHandler
         {
-            get { return authenticateHandler; }
+            get { return m_authenticateHandler; }
         }
 
         private readonly LandManager m_LandManager;
@@ -191,11 +191,11 @@ namespace OpenSim.Region.Environment.Scenes
             updateLock = new Mutex(false);
             
             m_moduleLoader = moduleLoader;
-            authenticateHandler = authen;
-            commsManager = commsMan;
+            m_authenticateHandler = authen;
+            CommsManager = commsMan;
             m_sceneGridService = sceneGridService;
-            storageManager = storeManager;
-            assetCache = assetCach;
+            m_storageManager = storeManager;
+            AssetCache = assetCach;
             m_regInfo = regInfo;
             m_regionHandle = m_regInfo.RegionHandle;
             m_regionName = m_regInfo.RegionName;
@@ -393,7 +393,7 @@ namespace OpenSim.Region.Environment.Scenes
                         phyScene.SetTerrain(Terrain.GetHeights1D());
                     }
 
-                    storageManager.DataStore.StoreTerrain(Terrain.GetHeights2DD(), RegionInfo.RegionID);
+                    m_storageManager.DataStore.StoreTerrain(Terrain.GetHeights2DD(), RegionInfo.RegionID);
 
                     float[] terData = Terrain.GetHeights1D();
 
@@ -470,7 +470,7 @@ namespace OpenSim.Region.Environment.Scenes
         /// <returns></returns>
         public bool Backup()
         {
-            EventManager.TriggerOnBackup(storageManager.DataStore);
+            EventManager.TriggerOnBackup(m_storageManager.DataStore);
             return true;
         }
 
@@ -486,7 +486,7 @@ namespace OpenSim.Region.Environment.Scenes
         {
             try
             {
-                double[,] map = storageManager.DataStore.LoadTerrain(RegionInfo.RegionID);
+                double[,] map = m_storageManager.DataStore.LoadTerrain(RegionInfo.RegionID);
                 if (map == null)
                 {
                     if (string.IsNullOrEmpty(m_regInfo.EstateSettings.terrainFile))
@@ -494,7 +494,7 @@ namespace OpenSim.Region.Environment.Scenes
                         MainLog.Instance.Verbose("TERRAIN", "No default terrain. Generating a new terrain.");
                         Terrain.HillsGenerator();
 
-                        storageManager.DataStore.StoreTerrain(Terrain.GetHeights2DD(), RegionInfo.RegionID);
+                        m_storageManager.DataStore.StoreTerrain(Terrain.GetHeights2DD(), RegionInfo.RegionID);
                     }
                     else
                     {
@@ -509,7 +509,7 @@ namespace OpenSim.Region.Environment.Scenes
                                                      "No terrain found in database or default. Generating a new terrain.");
                             Terrain.HillsGenerator();
                         }
-                        storageManager.DataStore.StoreTerrain(Terrain.GetHeights2DD(), RegionInfo.RegionID);
+                        m_storageManager.DataStore.StoreTerrain(Terrain.GetHeights2DD(), RegionInfo.RegionID);
                     }
                 }
                 else
@@ -539,7 +539,7 @@ namespace OpenSim.Region.Environment.Scenes
             asset.Name = "terrainImage";
             asset.Type = 0;
             asset.Temporary = true;
-            commsManager.AssetCache.AddAsset(asset);
+            AssetCache.AddAsset(asset);
         }
 
         #endregion
@@ -552,7 +552,7 @@ namespace OpenSim.Region.Environment.Scenes
         public virtual void LoadPrimsFromStorage()
         {
             MainLog.Instance.Verbose("Loading objects from datastore");
-            List<SceneObjectGroup> PrimsFromDB = storageManager.DataStore.LoadObjects(m_regInfo.RegionID);
+            List<SceneObjectGroup> PrimsFromDB = m_storageManager.DataStore.LoadObjects(m_regInfo.RegionID);
             foreach (SceneObjectGroup prim in PrimsFromDB)
             {
                 AddEntityFromStorage(prim);
@@ -790,8 +790,8 @@ namespace OpenSim.Region.Environment.Scenes
             CreateAndAddScenePresence(client, child);
 
             m_LandManager.sendParcelOverlay(client);
-            commsManager.UserProfileCache.AddNewUser(client.AgentId);
-            commsManager.TransactionsManager.AddUser(client.AgentId);
+            CommsManager.UserProfileCache.AddNewUser(client.AgentId);
+            CommsManager.TransactionsManager.AddUser(client.AgentId);
         }
 
         protected virtual void SubscribeToClientEvents(IClientAPI client)
@@ -818,7 +818,7 @@ namespace OpenSim.Region.Environment.Scenes
             client.OnGrabUpdate += m_innerScene.MoveObject;
             client.OnDeRezObject += DeRezObject;
             client.OnRezObject += RezObject;
-            client.OnNameFromUUIDRequest += commsManager.HandleUUIDNameRequest;
+            client.OnNameFromUUIDRequest += CommsManager.HandleUUIDNameRequest;
             client.OnObjectDescription += m_innerScene.PrimDescription;
             client.OnObjectName += m_innerScene.PrimName;
             client.OnLinkObjects += m_innerScene.LinkObjects;
@@ -837,13 +837,13 @@ namespace OpenSim.Region.Environment.Scenes
             client.OnEstateOwnerMessage += new EstateOwnerMessageRequest(m_estateManager.handleEstateOwnerMessage);
 
             client.OnCreateNewInventoryItem += CreateNewInventoryItem;
-            client.OnCreateNewInventoryFolder += commsManager.UserProfileCache.HandleCreateInventoryFolder;
-            client.OnFetchInventoryDescendents += commsManager.UserProfileCache.HandleFecthInventoryDescendents;
+            client.OnCreateNewInventoryFolder += CommsManager.UserProfileCache.HandleCreateInventoryFolder;
+            client.OnFetchInventoryDescendents += CommsManager.UserProfileCache.HandleFecthInventoryDescendents;
             client.OnRequestTaskInventory += RequestTaskInventory;
-            client.OnFetchInventory += commsManager.UserProfileCache.HandleFetchInventory;
+            client.OnFetchInventory += CommsManager.UserProfileCache.HandleFetchInventory;
             client.OnUpdateInventoryItem += UDPUpdateInventoryItemAsset;
-            client.OnAssetUploadRequest += commsManager.TransactionsManager.HandleUDPUploadRequest;
-            client.OnXferReceive += commsManager.TransactionsManager.HandleXfer;
+            client.OnAssetUploadRequest += CommsManager.TransactionsManager.HandleUDPUploadRequest;
+            client.OnXferReceive += CommsManager.TransactionsManager.HandleXfer;
             client.OnRezScript += RezScript;
             client.OnRemoveTaskItem += RemoveTaskInventory;
 
@@ -904,7 +904,7 @@ namespace OpenSim.Region.Environment.Scenes
             avatar.Close();
 
             // Remove client agent from profile, so new logins will work
-            commsManager.UserService.clearUserAgent(agentID);
+            CommsManager.UserService.clearUserAgent(agentID);
 
             return;
         }
@@ -926,7 +926,7 @@ namespace OpenSim.Region.Environment.Scenes
             if (Entities.ContainsKey(entID))
             {
                 Entities.Remove(entID);
-                storageManager.DataStore.RemoveObject(entID, m_regInfo.RegionID);
+                m_storageManager.DataStore.RemoveObject(entID, m_regInfo.RegionID);
                 return true;
             }
             return false;
@@ -963,7 +963,7 @@ namespace OpenSim.Region.Environment.Scenes
                 if (agent.CapsPath != "")
                 {
                     Caps cap =
-                        new Caps(commsManager.AssetCache, httpListener, m_regInfo.ExternalHostName, httpListener.Port,
+                        new Caps(AssetCache, httpListener, m_regInfo.ExternalHostName, httpListener.Port,
                                  agent.CapsPath, agent.AgentID, m_dumpAssetsToFile);
 
                     Util.SetCapsURL(agent.AgentID, "http://" + m_regInfo.ExternalHostName + ":" + httpListener.Port.ToString() +
@@ -971,18 +971,18 @@ namespace OpenSim.Region.Environment.Scenes
                     cap.RegisterHandlers();
                     cap.AddNewInventoryItem = AddInventoryItem;
                     cap.ItemUpdatedCall = CapsUpdateInventoryItemAsset;
-                    if (capsHandlers.ContainsKey(agent.AgentID))
+                    if (m_capsHandlers.ContainsKey(agent.AgentID))
                     {
                         //MainLog.Instance.Warn("client", "Adding duplicate CAPS entry for user " +
                                                     //    agent.AgentID.ToStringHyphenated());
-                        capsHandlers[agent.AgentID] = cap;
+                        m_capsHandlers[agent.AgentID] = cap;
                     }
                     else
                     {
-                        capsHandlers.Add(agent.AgentID, cap);
+                        m_capsHandlers.Add(agent.AgentID, cap);
                     }
                 }
-                authenticateHandler.AddNewCircuit(agent.circuitcode, agent);
+                m_authenticateHandler.AddNewCircuit(agent.circuitcode, agent);
             }
         }
 

OpenSim/Region/Environment/Scenes/SceneBase.cs

@@ -68,7 +68,13 @@ namespace OpenSim.Region.Environment.Scenes
 
         protected object m_syncRoot = new object();
         private uint m_nextLocalId = 8880000;
-        protected AssetCache assetCache;
+        private AssetCache m_assetCache;
+
+        public AssetCache AssetCache
+        {
+            get { return m_assetCache; }
+            set { m_assetCache = value; }
+        }
 
         #endregion
 

bin/Mono.Addins.dll.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+  <startup>
+    <supportedRuntime version="v2.0.50727" /> 
+  </startup>
+</configuration>

prebuild.xml

@@ -649,7 +649,6 @@
       </Files>
     </Project>
 
-
     <!-- OpenSim app -->
     <Project name="OpenSim" path="OpenSim/Region/Application" type="Exe">
       <Configuration name="Debug">
@@ -684,6 +683,32 @@
       <Reference name="XMLRPC.dll"/>
       <Reference name="OpenSim.Region.Communications.Local"/>
       <Reference name="Nini.dll" />
+      <Reference name="mono-addins.exe" />
+      <Files>
+        <Match pattern="*.cs" recurse="true"/>
+      </Files>
+    </Project>
+
+    <Project name="OpenSim.ApplicationPlugins.Example" path="OpenSim/ApplicationPlugins/Example" type="Library">
+      <Configuration name="Debug">
+        <Options>
+          <OutputPath>../../../bin/</OutputPath>
+        </Options>
+      </Configuration>
+      <Configuration name="Release">
+        <Options>
+          <OutputPath>../../../bin/</OutputPath>
+        </Options>
+      </Configuration>
+
+      <ReferencePath>../../../bin/</ReferencePath>
+      <Reference name="System"/>
+      <Reference name="System.Xml"/>
+      <Reference name="libsecondlife.dll" />
+      <Reference name="OpenSim"/>
+      <Reference name="OpenSim.Region.ClientStack"/>
+      <Reference name="OpenSim.Framework.Console"/>
+      <Reference name="mono-addins.exe" />
       <Files>
         <Match pattern="*.cs" recurse="true"/>
       </Files>