Committing the interface change and the addition to the modules to get

the ball rolling on replacable modules. No user functionality yet

OpenSim/Client/Linden/LLClientStackModule.cs

@@ -110,6 +110,11 @@ namespace OpenSim.Client.Linden
 
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "LLClientStackModule"; }

OpenSim/Client/Linden/LLProxyLoginModule.cs

@@ -125,6 +125,11 @@ namespace OpenSim.Client.Linden
 
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "LLProxyLoginModule"; }

OpenSim/Client/Linden/LLStandaloneLoginModule.cs

@@ -155,6 +155,11 @@ namespace OpenSim.Client.Linden
             }
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "LLStandaloneLoginModule"; }

OpenSim/Region/CoreModules/Agent/Capabilities/CapabilitiesModule.cs

@@ -81,6 +81,11 @@ namespace OpenSim.Region.CoreModules.Agent.Capabilities
             get { return "Capabilities Module"; } 
         }
 
+        public Type ReplacableInterface
+        {
+            get { return null; }
+        }
+
         public void AddCapsHandler(UUID agentId)
         {
             if (m_scene.RegionInfo.EstateSettings.IsBanned(agentId))

OpenSim/Region/CoreModules/Asset/CenomeAssetCache.cs

@@ -290,6 +290,11 @@ namespace OpenSim.Region.CoreModules.Asset
             get { return "CenomeMemoryAssetCache"; }
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         /// <summary>
         /// New region is being added to server.
         /// </summary>

OpenSim/Region/CoreModules/Asset/CoreAssetCache.cs

@@ -54,6 +54,11 @@ namespace OpenSim.Region.CoreModules.Asset
             get { return "CoreAssetCache"; }
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public void Initialise(IConfigSource source)
         {
             IConfig moduleConfig = source.Configs["Modules"];

OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs

@@ -146,6 +146,11 @@ namespace Flotsam.RegionModules.AssetCache
             m_InvalidChars.AddRange(Path.GetInvalidFileNameChars());
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return m_ModuleName; }

OpenSim/Region/CoreModules/Asset/GlynnTuckerAssetCache.cs

@@ -51,6 +51,11 @@ namespace OpenSim.Region.CoreModules.Asset
         // Instrumentation
         private uint m_DebugRate = 0;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "GlynnTuckerAssetCache"; }

OpenSim/Region/CoreModules/Avatar/Chat/ChatModule.cs

@@ -125,6 +125,11 @@ namespace OpenSim.Region.CoreModules.Avatar.Chat
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public virtual string Name
         {
             get { return "ChatModule"; }

OpenSim/Region/CoreModules/Scripting/LSLHttp/UrlModule.cs

@@ -74,6 +74,11 @@ namespace OpenSim.Region.CoreModules.Scripting.LSLHttp
 
         private IHttpServer m_HttpServer = null;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "UrlModule"; }

OpenSim/Region/CoreModules/ServiceConnectorsIn/Asset/AssetServiceInConnectorModule.cs

@@ -77,6 +77,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsIn.Asset
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "RegionAssetService"; }

OpenSim/Region/CoreModules/ServiceConnectorsIn/Authentication/HGAuthServiceInConnectorModule.cs

@@ -81,6 +81,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsIn.Authentication
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "HGAuthServiceInConnectorModule"; }

OpenSim/Region/CoreModules/ServiceConnectorsIn/Inventory/InventoryServiceInConnectorModule.cs

@@ -77,6 +77,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsIn.Inventory
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "RegionInventoryService"; }

OpenSim/Region/CoreModules/ServiceConnectorsIn/Land/LandServiceInConnectorModule.cs

@@ -81,6 +81,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsIn.Land
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "LandServiceInConnectorModule"; }

OpenSim/Region/CoreModules/ServiceConnectorsIn/Neighbour/NeighbourServiceInConnectorModule.cs

@@ -81,6 +81,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsIn.Neighbour
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "NeighbourServiceInConnectorModule"; }

OpenSim/Region/CoreModules/ServiceConnectorsIn/Simulation/SimulationServiceInConnectorModule.cs

@@ -77,6 +77,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsIn.Simulation
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "SimulationService"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Asset/HGAssetBroker.cs

@@ -52,6 +52,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Asset
 
         private bool m_Enabled = false;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "HGAssetBroker"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Asset/LocalAssetServiceConnector.cs

@@ -51,6 +51,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Asset
 
         private bool m_Enabled = false;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "LocalAssetServicesConnector"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Asset/RemoteAssetServiceConnector.cs

@@ -48,6 +48,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Asset
         private bool m_Enabled = false;
         private IImprovedAssetCache m_Cache;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "RemoteAssetServicesConnector"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Inventory/HGInventoryBroker.cs

@@ -56,6 +56,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Inventory
         private ISessionAuthInventoryService m_HGService;
 
         private string m_LocalGridInventoryURI = string.Empty;
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "HGInventoryBroker"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Inventory/LocalInventoryServiceConnector.cs

@@ -53,6 +53,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Inventory
         private bool m_Enabled = false;
         private bool m_Initialized = false;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "LocalInventoryServicesConnector"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Inventory/RemoteInventoryServiceConnector.cs

@@ -50,6 +50,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Inventory
         private Scene m_Scene;
         private InventoryServicesConnector m_RemoteConnector;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "RemoteInventoryServicesConnector"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Land/LocalLandServiceConnector.cs

@@ -60,6 +60,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Land
 
         #region ISharedRegionModule
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "LocalLandServicesConnector"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Land/RemoteLandServiceConnector.cs

@@ -49,6 +49,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Land
         private bool m_Enabled = false;
         private LocalLandServicesConnector m_LocalService;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "RemoteLandServicesConnector"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Neighbour/LocalNeighbourServiceConnector.cs

@@ -60,6 +60,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Neighbour
 
         #region ISharedRegionModule
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "LocalNeighbourServicesConnector"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/Neighbour/RemoteNeighourServiceConnector.cs

@@ -51,6 +51,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Neighbour
         private string serviceDll;
         private List<Scene> m_Scenes = new List<Scene>();
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "RemoteNeighbourServicesConnector"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/User/LocalUserServiceConnector.cs

@@ -46,6 +46,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.User
 
         private bool m_Enabled = false;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "LocalUserServicesConnector"; }

OpenSim/Region/CoreModules/ServiceConnectorsOut/User/RemoteUserServiceConnector.cs

@@ -25,6 +25,7 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+using System;
 using Nini.Config;
 using log4net;
 using System.Reflection;
@@ -44,6 +45,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.User
 
         private bool m_Enabled = false;
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "RemoteUserServicesConnector"; }

OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs

@@ -159,6 +159,11 @@ namespace OpenSim.Region.CoreModules.World.Terrain
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "TerrainModule"; }

OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs

@@ -128,6 +128,11 @@ namespace OpenSim.Region.CoreModules.World.WorldMap
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public virtual string Name
         {
             get { return "WorldMapModule"; }

OpenSim/Region/Framework/Interfaces/IRegionModuleBase.cs

@@ -39,6 +39,20 @@ namespace OpenSim.Region.Framework.Interfaces
         /// </value>
         string Name { get; }
 
+        /// <summary>
+        /// If this returns non-null, it is the type of an interface that
+        /// this module intends to register.
+        /// This will cause the loader to defer loading of this module
+        /// until all other modules have been loaded. If no other module
+        /// has registered the interface by then, this module will be
+        /// activated, else it will remain inactive, letting the other module
+        /// take over. This should return non-null ONLY in modules that are
+        /// intended to be easily replacable, e.g. stub implementations
+        /// that the developer expects to be replaced by third party provided
+        /// modules.
+        /// </summary>
+        Type ReplacableInterface { get; }
+
         /// <summary>
         /// This is called to initialize the region module. For shared modules, this is called
         /// exactly once, after creating the single (shared) instance. For non-shared modules,

OpenSim/Region/OptionalModules/Avatar/Chat/IRCBridgeModule.cs

@@ -54,6 +54,11 @@ namespace OpenSim.Region.OptionalModules.Avatar.Chat
 
         #region INonSharedRegionModule Members
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "IRCBridgeModule"; }

OpenSim/Region/OptionalModules/Avatar/Concierge/ConciergeModule.cs

@@ -214,6 +214,11 @@ namespace OpenSim.Region.OptionalModules.Avatar.Concierge
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public override string Name
         {
             get { return "ConciergeModule"; }

OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/XmlRpcGroupsMessaging.cs

@@ -177,6 +177,11 @@ namespace OpenSim.Region.OptionalModules.Avatar.XmlRpcGroups
             m_msgTransferModule = null;
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "XmlRpcGroupsMessaging"; }

OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/XmlRpcGroupsModule.cs

@@ -222,6 +222,11 @@ namespace OpenSim.Region.OptionalModules.Avatar.XmlRpcGroups
             m_clientRequestIDFlushTimer.Stop();
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "XmlRpcGroupsModule"; }

OpenSim/Region/ScriptEngine/DotNetEngine/ScriptEngine.cs

@@ -207,6 +207,11 @@ namespace OpenSim.Region.ScriptEngine.DotNetEngine
         {
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "Common." + ScriptEngineName; }

OpenSim/Region/ScriptEngine/XEngine/XEngine.cs

@@ -402,6 +402,11 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             return 0;
         }
 
+        public Type ReplacableInterface 
+        {
+            get { return null; }
+        }
+
         public string Name
         {
             get { return "XEngine"; }