* This update enables grid wide presence updates.

* You'll need to start-up the MessageingServer and set it up.   It sets up like any of the other grid servers.
* All user presence data is kept in memory for speed, while the agent is online.   That means if you shutdown the messaging server or the messaging server crashes, it forgets who's online/offline.
* Occasionally the region-cache will get stale if regions move around a lot. if it gets stale, run clear-cache on the messaging server console to clear the region cache.

4 files changed, 229 insertions, 30 deletions

diff --git a/OpenSim/Grid/MessagingServer/Main.cs b/OpenSim/Grid/MessagingServer/Main.cs
index d2fa659..91f2101 100644
--- a/OpenSim/Grid/MessagingServer/Main.cs
+++ b/OpenSim/Grid/MessagingServer/Main.cs
@@ -31,7 +31,9 @@ using System.Reflection;
 using libsecondlife;
 using log4net;
 using log4net.Config;
+
 using OpenSim.Framework;
+using OpenSim.Framework.Communications.Cache;
 using OpenSim.Framework.Console;
 using OpenSim.Framework.Servers;
 
@@ -88,6 +90,8 @@ namespace OpenSim.Grid.MessagingServer
             m_log.Info("[REGION]: Starting HTTP process");
             m_httpServer = new BaseHttpServer(Cfg.HttpPort);
 
+            
+
             msgsvc = new MessageService(Cfg);
 
             if (msgsvc.registerWithUserServer())
@@ -144,6 +148,24 @@ namespace OpenSim.Grid.MessagingServer
             }
         }
 
+        public override void RunCmd(string cmd, string[] cmdparams)
+        {
+            base.RunCmd(cmd, cmdparams);
+
+            switch (cmd)
+            {
+                case "help":
+                    m_console.Notice("clear-cache - Clears region cache.  Should be done when regions change position.  The region cache gets stale after a while.");
+                    break;
+                case "clear-cache":
+                    int entries = msgsvc.ClearRegionCache();
+                    m_console.Notice("Region cache cleared! Cleared " + entries.ToString() + " entries");
+                    break;
+            }
+
+                
+        }
+
         public override void Shutdown()
         {
             msgsvc.deregisterWithUserServer();
diff --git a/OpenSim/Grid/MessagingServer/MessageService.cs b/OpenSim/Grid/MessagingServer/MessageService.cs
index e1beef1..59fef7e 100644
--- a/OpenSim/Grid/MessagingServer/MessageService.cs
+++ b/OpenSim/Grid/MessagingServer/MessageService.cs
@@ -46,6 +46,7 @@ namespace OpenSim.Grid.MessagingServer
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
         private MessageServerConfig m_cfg;
+        private UserManager m_userManager;
 
         //A hashtable of all current presences this server knows about
         private Hashtable m_presences = new Hashtable();
@@ -62,11 +63,16 @@ namespace OpenSim.Grid.MessagingServer
         public MessageService(MessageServerConfig cfg)
         {
             m_cfg = cfg;
+            m_userManager = new UserManager();
+            UserConfig uc = new UserConfig();
+            uc.DatabaseConnect = cfg.DatabaseConnect;
+            uc.DatabaseProvider = cfg.DatabaseProvider;
+            
+            m_userManager._config = uc;
+            m_userManager.AddPlugin(cfg.DatabaseProvider, cfg.DatabaseConnect);
         }
 
-        #region RegionComms Methods
-
-        #endregion
+       
 
         #region FriendList Methods
 
@@ -123,11 +129,27 @@ namespace OpenSim.Grid.MessagingServer
                 {
                     // we need to send out online status update, but the user is already subscribed
                 }
-                PresenceInformer friendlistupdater = new PresenceInformer();
-                friendlistupdater.presence1 = friendpresence;
-                friendlistupdater.presence2 = userpresence;
-                WaitCallback cb = new WaitCallback(friendlistupdater.go);
-                ThreadPool.QueueUserWorkItem(cb);
+                UserAgentData p2Handle = m_userManager.GetUserAgentData(userpresence.agentData.AgentID);
+                if (p2Handle != null)
+                {
+                    
+                        userpresence.regionData.regionHandle = p2Handle.Handle;
+                        PresenceInformer friendlistupdater = new PresenceInformer();
+                        friendlistupdater.presence1 = friendpresence;
+                        //friendlistupdater.gridserverurl = m_cfg.GridServerURL;
+                        //friendlistupdater.gridserversendkey = m_cfg.GridSendKey;
+                        //friendlistupdater.gridserverrecvkey = m_cfg.GridRecvKey;
+                        friendlistupdater.presence2 = userpresence;
+                        friendlistupdater.OnGetRegionData += GetRegionInfo;
+                        friendlistupdater.OnDone += PresenceUpdateDone;
+                        WaitCallback cb = new WaitCallback(friendlistupdater.go);
+                        ThreadPool.QueueUserWorkItem(cb);
+                    
+                }
+                else
+                {
+                    // Skip because we can't find any data on the user
+                }
 
                 //SendRegionPresenceUpdate(friendpresence, userpresence);
             }
@@ -143,12 +165,30 @@ namespace OpenSim.Grid.MessagingServer
                 {
                     // we need to send out online status update, but the user is already subscribed
                 }
-                PresenceInformer friendlistupdater = new PresenceInformer();
-                friendlistupdater.presence1 = userpresence;
-                friendlistupdater.presence2 = friendpresence;
+                
+                UserAgentData p2Handle = m_userManager.GetUserAgentData(friendpresence.agentData.AgentID);
 
-                WaitCallback cb2 = new WaitCallback(friendlistupdater.go);
-                ThreadPool.QueueUserWorkItem(cb2);
+                if (p2Handle != null)
+                {
+
+                    friendpresence.regionData.regionHandle = p2Handle.Handle;
+                    PresenceInformer friendlistupdater = new PresenceInformer();
+                    friendlistupdater.presence1 = userpresence;
+                    friendlistupdater.presence2 = friendpresence;
+                    //friendlistupdater.gridserverurl = m_cfg.GridServerURL;
+                    //friendlistupdater.gridserversendkey = m_cfg.GridSendKey;
+                    //friendlistupdater.gridserverrecvkey = m_cfg.GridRecvKey;
+                    friendlistupdater.OnGetRegionData += GetRegionInfo;
+                    friendlistupdater.OnDone += PresenceUpdateDone;
+                    WaitCallback cb2 = new WaitCallback(friendlistupdater.go);
+                    ThreadPool.QueueUserWorkItem(cb2);
+                }
+                else
+                {
+                    // skip, agent doesn't appear to exist anymore
+                }
+
+               
 
                 //SendRegionPresenceUpdate(userpresence, friendpresence);
             }
@@ -209,6 +249,7 @@ namespace OpenSim.Grid.MessagingServer
         /// <param name="AgentID"></param>
         private void ProcessLogOff(LLUUID AgentID)
         {
+            m_log.Info("[LOGOFF]: Processing Logoff");
             UserPresenceData AgentData = null;
             List<LLUUID> AgentsNeedingNotification = new List<LLUUID>();
             UserPresenceData friendd = null;
@@ -223,6 +264,7 @@ namespace OpenSim.Grid.MessagingServer
             if (AgentData != null)
             {
                  AgentsNeedingNotification = AgentData.subscriptionData;
+                 AgentData.OnlineYN = false;
                 //lock (m_presence_BackReferences)
                 //{
                     //if (m_presence_BackReferences.Contains(AgentID))
@@ -262,13 +304,33 @@ namespace OpenSim.Grid.MessagingServer
                             m_presences[AgentsNeedingNotification[i]] = friendd;
                         }
 
-                        PresenceInformer friendlistupdater = new PresenceInformer();
-                        friendlistupdater.presence1 = AgentData;
-                        friendlistupdater.presence2 = friendd;
+                        UserAgentData p2Handle = m_userManager.GetUserAgentData(friendd.agentData.AgentID);
+                        if (p2Handle != null)
+                        {
+                                
+                            
+                                friendd.regionData.regionHandle = p2Handle.Handle;
+                                PresenceInformer friendlistupdater = new PresenceInformer();
+                                friendlistupdater.presence1 = AgentData;
+                                friendlistupdater.presence2 = friendd;
+
+                                //friendlistupdater.gridserverurl = m_cfg.GridServerURL;
+                                //friendlistupdater.gridserversendkey = m_cfg.GridSendKey;
+                                //friendlistupdater.gridserverrecvkey = m_cfg.GridRecvKey;
+
+                                friendlistupdater.OnGetRegionData += GetRegionInfo;
+                                friendlistupdater.OnDone += PresenceUpdateDone;
+                            
+                                WaitCallback cb3 = new WaitCallback(friendlistupdater.go);
+                                ThreadPool.QueueUserWorkItem(cb3);
 
-                        WaitCallback cb3 = new WaitCallback(friendlistupdater.go);
-                        ThreadPool.QueueUserWorkItem(cb3);
+                            
 
+                        }
+                        else
+                        {
+                            // skip, agent can't be found
+                        }
                         //SendRegionPresenceUpdate(AgentData, friendd);
 
                         //removeBackReference(AgentID, AgentsNeedingNotification[i]);
@@ -279,6 +341,12 @@ namespace OpenSim.Grid.MessagingServer
 
         #endregion
 
+        public void PresenceUpdateDone(PresenceInformer obj)
+        {
+            obj.OnGetRegionData -= GetRegionInfo;
+            obj.OnDone -= PresenceUpdateDone;
+        }
+
         #region UserServer Comms
 
         /// <summary>
@@ -393,7 +461,7 @@ namespace OpenSim.Grid.MessagingServer
             up.friendData = flData;
             RegionProfileData riData = GetRegionInfo(regionHandle);
             up.regionData = riData;
-
+            up.OnlineYN = true;
             ProcessFriendListSubscriptions(up);
 
             return new XmlRpcResponse();
@@ -407,6 +475,7 @@ namespace OpenSim.Grid.MessagingServer
         /// <returns></returns>
         public XmlRpcResponse UserLoggedOff(XmlRpcRequest request)
         {
+            m_log.Info("[USERLOGOFF]: User logged off called");
             Hashtable requestData = (Hashtable)request.Params[0];
 
             LLUUID AgentID = new LLUUID((string)requestData["agentid"]);
@@ -423,23 +492,64 @@ namespace OpenSim.Grid.MessagingServer
         /// <summary>
         /// Gets and caches a RegionInfo object from the gridserver based on regionhandle
         /// if the regionhandle is already cached, use the cached values
+        /// Gets called by lots of threads!!!!!
         /// </summary>
         /// <param name="regionhandle">handle to the XY of the region we're looking for</param>
         /// <returns>A RegionInfo object to stick in the presence info</returns>
         public RegionProfileData GetRegionInfo(ulong regionhandle)
         {
             RegionProfileData regionInfo = null;
-            if (m_regionInfoCache.Contains(regionhandle))
+            bool lookup = false;
+
+            lock (m_regionInfoCache)
             {
-                regionInfo = (RegionProfileData)m_regionInfoCache[regionhandle];
+                if (m_regionInfoCache.Contains(regionhandle))
+                {
+                    regionInfo = (RegionProfileData)m_regionInfoCache[regionhandle];
+                }
+                else
+                {
+                    // Don't lock the cache while we're looking up the region!
+                    lookup = true; 
+                }
             }
-            else
+
+            if (lookup)
             {
                 regionInfo = RequestRegionInfo(regionhandle);
+                
+                if (regionInfo != null)
+                {
+                    lock (m_regionInfoCache)
+                    {
+                        if (m_regionInfoCache.Contains(regionhandle))
+                        {
+                            m_regionInfoCache[regionhandle] = regionInfo;
+                        }
+                        else
+                        {
+                            m_regionInfoCache.Add(regionhandle, regionInfo);
+                        }
+                    }
+                }
             }
+            
             return regionInfo;
         }
 
+        public int ClearRegionCache()
+        {
+            int cachecount = 0;
+
+            lock (m_regionInfoCache)
+            {
+                cachecount = m_regionInfoCache.Count;
+                m_regionInfoCache.Clear();
+            }
+            
+            return cachecount;
+        }
+
         /// <summary>
         /// Get RegionProfileData from the GridServer
         /// We'll Cache this information and use it for presence updates
@@ -541,6 +651,7 @@ namespace OpenSim.Grid.MessagingServer
             // Process Response
             if (GridRespData.ContainsKey("responsestring"))
             {
+
                 return true;
             }
             else
diff --git a/OpenSim/Grid/MessagingServer/PresenceInformer.cs b/OpenSim/Grid/MessagingServer/PresenceInformer.cs
index 59d0e13..050d88a 100644
--- a/OpenSim/Grid/MessagingServer/PresenceInformer.cs
+++ b/OpenSim/Grid/MessagingServer/PresenceInformer.cs
@@ -27,16 +27,31 @@
 
 using System.Collections;
 using System.Reflection;
+using System.Net;
 using log4net;
 using Nwc.XmlRpc;
 using OpenSim.Data;
 
 namespace OpenSim.Grid.MessagingServer
 {
+    public delegate RegionProfileData GetRegionData(ulong region_handle);
+    public delegate void Done(PresenceInformer obj);
+   
+
     public class PresenceInformer
     {
+        public event GetRegionData OnGetRegionData;
+        public event Done OnDone;
+        
+        private GetRegionData handlerGetRegionData = null;
+        private Done handlerDone = null;
+
         public UserPresenceData presence1 = null;
         public UserPresenceData presence2 = null;
+        public string gridserverurl, gridserversendkey, gridserverrecvkey;
+        public bool lookupRegion = true;
+        //public methodGroup
+
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
         public PresenceInformer()
@@ -60,18 +75,68 @@ namespace OpenSim.Grid.MessagingServer
         public void SendRegionPresenceUpdate(UserPresenceData TalkingAbout, UserPresenceData UserToUpdate)
         {
             // TODO: Fill in pertenant Presence Data from 'TalkingAbout'
+            RegionProfileData whichRegion = new RegionProfileData();
+            if (lookupRegion)
+            {
+                handlerGetRegionData = OnGetRegionData;
+                if (handlerGetRegionData != null)
+                {
+                    whichRegion = handlerGetRegionData(UserToUpdate.regionData.regionHandle);
+                }
+                //RegionProfileData rp = RegionProfileData.RequestSimProfileData(UserToUpdate.regionData.regionHandle, gridserverurl, gridserversendkey, gridserverrecvkey);
 
-            RegionProfileData whichRegion = UserToUpdate.regionData;
+                //whichRegion = rp;
+            }
+            else
+            {
+                whichRegion = UserToUpdate.regionData;
+            }
             //whichRegion.httpServerURI
 
-            Hashtable PresenceParams = new Hashtable();
-            ArrayList SendParams = new ArrayList();
-            SendParams.Add(PresenceParams);
+            if (whichRegion != null)
+            {
+
+
+                Hashtable PresenceParams = new Hashtable();
+                PresenceParams.Add("agent_id",TalkingAbout.agentData.AgentID.ToString());
+                PresenceParams.Add("notify_id",UserToUpdate.agentData.AgentID.ToString());
+                if (TalkingAbout.OnlineYN)
+                    PresenceParams.Add("status","TRUE");
+                else 
+                    PresenceParams.Add("status","FALSE");
+
+                
+
+
+                ArrayList SendParams = new ArrayList();
+                SendParams.Add(PresenceParams);
+
+                
+                m_log.Info("[PRESENCE]: Informing " + whichRegion.regionName + " at " + whichRegion.httpServerURI);
+                // Send
+                XmlRpcRequest RegionReq = new XmlRpcRequest("presence_update", SendParams);
+                try
+                {
+
+                    XmlRpcResponse RegionResp = RegionReq.Send(whichRegion.httpServerURI, 6000);
+                }
+                catch (WebException)
+                {
+                    m_log.WarnFormat("[INFORM]: failed notifying region {0} containing user {1} about {2}", whichRegion.regionName, UserToUpdate.agentData.firstname + " " + UserToUpdate.agentData.lastname, TalkingAbout.agentData.firstname + " " + TalkingAbout.agentData.lastname);
+                }   
+            } 
+            else 
+            {
+                m_log.Info("[PRESENCEUPDATER]: Region data was null skipping");
+                
+            }
+
+            handlerDone = OnDone;
+            if (handlerDone != null)
+            {
+                handlerDone(this);
+            }
 
-            m_log.Info("[PRESENCE]: Informing " + whichRegion.regionName + " at " + whichRegion.httpServerURI);
-            // Send
-            XmlRpcRequest RegionReq = new XmlRpcRequest("presence_update", SendParams);
-            XmlRpcResponse RegionResp = RegionReq.Send(whichRegion.httpServerURI, 6000);
         }
     }
 }
diff --git a/OpenSim/Grid/MessagingServer/UserPresenceData.cs b/OpenSim/Grid/MessagingServer/UserPresenceData.cs
index 7188201..74a6032 100644
--- a/OpenSim/Grid/MessagingServer/UserPresenceData.cs
+++ b/OpenSim/Grid/MessagingServer/UserPresenceData.cs
@@ -40,6 +40,7 @@ namespace OpenSim.Grid.MessagingServer
         public string httpURI = String.Empty;
         public List<FriendListItem> friendData = new List<FriendListItem> ();
         public List<LLUUID> subscriptionData = new List<LLUUID>();
+        public bool OnlineYN = false;
 
         public UserPresenceData()
         {