implementing per-region configuration of limits on the number of prims one can have in a linkset

Applied with changes - patch was based on a repo different from core

Signed-off-by: Melanie <melanie@t-data.com>

OpenSim/Framework/RegionInfo.cs

@@ -126,6 +126,7 @@ namespace OpenSim.Framework
         private int m_physPrimMax = 0;
         private bool m_clampPrimSize = false;
         private int m_objectCapacity = 0;
+        private int m_linksetCapacity = 0;
         private int m_agentCapacity = 0;
         private string m_regionType = String.Empty;
         private RegionLightShareData m_windlight = new RegionLightShareData();
@@ -317,6 +318,11 @@ namespace OpenSim.Framework
             get { return m_objectCapacity; }
         }
 
+        public int LinksetCapacity
+        {
+            get { return m_linksetCapacity; }
+        }
+
         public int AgentCapacity
         {
             get { return m_agentCapacity; }
@@ -655,6 +661,9 @@ namespace OpenSim.Framework
             m_objectCapacity = config.GetInt("MaxPrims", 15000);
             allKeys.Remove("MaxPrims");
 
+            m_linksetCapacity = config.GetInt("LinksetPrims", 0);
+            allKeys.Remove("LinksetPrims");
+            
             #endregion
 
             m_agentCapacity = config.GetInt("MaxAgents", 100);
@@ -709,6 +718,9 @@ namespace OpenSim.Framework
             if (m_objectCapacity != 0)
                 config.Set("MaxPrims", m_objectCapacity);
 
+            if (m_linksetCapacity != 0)
+                config.Set("LinksetPrims", m_linksetCapacity);
+
             if (m_agentCapacity != 0)
                 config.Set("MaxAgents", m_agentCapacity);
 
@@ -804,6 +816,9 @@ namespace OpenSim.Framework
             configMember.addConfigurationOption("object_capacity", ConfigurationOption.ConfigurationTypes.TYPE_INT32,
                                                 "Max objects this sim will hold", m_objectCapacity.ToString(), true);
 
+            configMember.addConfigurationOption("linkset_capacity", ConfigurationOption.ConfigurationTypes.TYPE_INT32,
+                                                "Max prims an object will hold", m_linksetCapacity.ToString(), true);
+
             configMember.addConfigurationOption("agent_capacity", ConfigurationOption.ConfigurationTypes.TYPE_INT32,
                                                 "Max avatars this sim will hold", m_agentCapacity.ToString(), true);
 
@@ -922,6 +937,9 @@ namespace OpenSim.Framework
                 case "object_capacity":
                     m_objectCapacity = (int)configuration_result;
                     break;
+                case "linkset_capacity":
+                    m_linksetCapacity = (int)configuration_result;
+                    break;
                 case "agent_capacity":
                     m_agentCapacity = (int)configuration_result;
                     break;

OpenSim/Region/Framework/Scenes/Scene.cs

@@ -123,6 +123,11 @@ namespace OpenSim.Region.Framework.Scenes
         /// </summary>
         public float m_maxPhys = 10;
 
+        /// <summary>
+        /// Max prims an object will hold
+        /// </summary>
+        public int m_linksetCapacity = 0;
+
         public bool m_clampPrimSize;
         public bool m_trustBinaries;
         public bool m_allowScriptCrossings;
@@ -772,6 +777,12 @@ namespace OpenSim.Region.Framework.Scenes
                     m_clampPrimSize = true;
                 }
 
+                m_linksetCapacity = startupConfig.GetInt("LinksetPrims", m_linksetCapacity);
+                if (RegionInfo.LinksetCapacity > 0)
+                {
+                    m_linksetCapacity = RegionInfo.LinksetCapacity;
+                }
+
                 m_useTrashOnDelete = startupConfig.GetBoolean("UseTrashOnDelete", m_useTrashOnDelete);
                 m_trustBinaries = startupConfig.GetBoolean("TrustBinaries", m_trustBinaries);
                 m_allowScriptCrossings = startupConfig.GetBoolean("AllowScriptCrossing", m_allowScriptCrossings);

OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs

@@ -2014,6 +2014,24 @@ namespace OpenSim.Region.Framework.Scenes
             if (objectGroup == this)
                 return;
 
+            // If the configured linkset capacity is greater than zero,
+            // and the new linkset would have a prim count higher than this
+            // value, do not link it.
+            if (m_scene.m_linksetCapacity > 0 &&
+                    (PrimCount + objectGroup.PrimCount) >
+                    m_scene.m_linksetCapacity)
+            {
+                m_log.DebugFormat(
+                        "[SCENE OBJECT GROUP]: Cannot link group with root" +
+                        " part {0}, {1} ({2} prims) to group with root part" +
+                        " {3}, {4} ({5} prims) because the new linkset" +
+                        " would exceed the configured maximum of {6}",
+                        objectGroup.RootPart.Name, objectGroup.RootPart.UUID,
+                        objectGroup.PrimCount, RootPart.Name, RootPart.UUID,
+                        PrimCount, m_scene.m_linksetCapacity);
+                return;
+            }
+
             // 'linkPart' == the root of the group being linked into this group
             SceneObjectPart linkPart = objectGroup.m_rootPart;
 

bin/OpenSim.ini.example

@@ -108,6 +108,11 @@
     ;; This can be overriden in the region config file.
     ; ClampPrimSize = false
 	
+	;# {LinksetPrims} {} {Max prims an object will hold?} {} 0
+	;; Maximum number of prims allowable in a linkset. Affects creating new linksets. Ignored if less than or equal to zero.
+	;; This can be overriden in the region config file.
+	; LinksetPrims = 0
+
     ;# {AllowScriptCrossing} {} {Allow scripts to cross into this region} {true false} true
     ;; Allow scripts to keep running when they cross region boundaries, rather than being restarted.  State is reloaded on the destination region.
     ;; This only applies when crossing to a region running in a different simulator.  

bin/OpenSimDefaults.ini

@@ -95,6 +95,10 @@
     ; This can be overriden in the region config file.
     ClampPrimSize = false
 	
+	; Maximum number of prims allowable in a linkset. Affects creating new linksets. Ignored if less than or equal to zero.
+	; This can be overriden in the region config file.
+	LinksetPrims = 0
+
     ; Allow scripts to keep running when they cross region boundaries, rather than being restarted.  State is reloaded on the destination region.
     ; This only applies when crossing to a region running in a different simulator.  
     ; For crossings where the regions are on the same simulator the script is always kept running.