Add "friends show cache <first-name> <last-name>" command for debugging purposes.

This adds a reverse lookup (name -> ID) to IUserManagement instead of hitting the UserAccountService directly.

OpenSim/Region/CoreModules/Avatar/Friends/FriendsModule.cs

@@ -214,6 +214,11 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
 
         public void RegionLoaded(Scene scene)
         {
+            scene.AddCommand(
+                "Friends", this, "friends show cache",
+                "friends show cache [<first-name> <last-name>]",
+                "Show the friends cache for the given user",
+                HandleFriendsShowCacheCommand);
         }
 
         public void RemoveRegion(Scene scene)
@@ -876,7 +881,9 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
         /// Get friends from local cache only
         /// </summary>
         /// <param name="agentID"></param>
-        /// <returns></returns>
+        /// <returns>
+        /// An empty array if the user has no friends or friends have not been cached.
+        /// </returns>
         protected FriendInfo[] GetFriends(UUID agentID)
         {
             UserFriendData friendsData;
@@ -925,6 +932,17 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
             }
         }
 
+        /// <summary>
+        /// Are friends cached on this simulator for a particular user?
+        /// </summary>
+        /// <param name="userID"></param>
+        /// <returns></returns>
+        protected bool AreFriendsCached(UUID userID)
+        {
+            lock (m_Friends)
+                return m_Friends.ContainsKey(userID);
+        }
+
         protected virtual bool StoreRights(UUID agentID, UUID friendID, int rights)
         {
             FriendsService.StoreFriend(agentID.ToString(), friendID.ToString(), rights);
@@ -950,5 +968,61 @@ namespace OpenSim.Region.CoreModules.Avatar.Friends
         }
 
         #endregion
+
+        protected void HandleFriendsShowCacheCommand(string module, string[] cmd)
+        {
+            if (cmd.Length != 5)
+            {
+                MainConsole.Instance.OutputFormat("Usage: friends show cache [<first-name> <last-name>]");
+                return;
+            }
+
+            string firstName = cmd[3];
+            string lastName = cmd[4];
+
+            IUserManagement umModule = m_Scenes[0].RequestModuleInterface<IUserManagement>();
+            UUID userId = umModule.GetUserIdByName(firstName, lastName);
+
+//            UserAccount ua
+//                = m_Scenes[0].UserAccountService.GetUserAccount(m_Scenes[0].RegionInfo.ScopeID, firstName, lastName);
+
+            if (userId == UUID.Zero)
+            {
+                MainConsole.Instance.OutputFormat("No such user as {0} {1}", firstName, lastName);
+                return;
+            }
+
+            if (!AreFriendsCached(userId))
+            {
+                MainConsole.Instance.OutputFormat("No friends cached on this simulator for {0} {1}", firstName, lastName);
+                return;
+            }
+
+            MainConsole.Instance.OutputFormat("Cached friends for {0} {1}:", firstName, lastName);
+
+            MainConsole.Instance.OutputFormat("UUID\n");
+
+            FriendInfo[] friends = GetFriends(userId);
+
+            foreach (FriendInfo friend in friends)
+            {
+//                MainConsole.Instance.OutputFormat(friend.PrincipalID.ToString());
+
+//                string friendFirstName, friendLastName;
+//
+//                UserAccount friendUa
+//                    = m_Scenes[0].UserAccountService.GetUserAccount(m_Scenes[0].RegionInfo.ScopeID, friend.PrincipalID);
+
+                UUID friendId;
+                string friendName;
+
+                if (UUID.TryParse(friend.Friend, out friendId))
+                    friendName = umModule.GetUserName(friendId);
+                else
+                    friendName = friend.Friend;
+
+                MainConsole.Instance.OutputFormat("{0} {1} {2}", friendName, friend.MyFlags, friend.TheirFlags);
+            }
+        }
     }
 }

OpenSim/Region/CoreModules/Framework/UserManagement/UserManagementModule.cs

@@ -224,6 +224,35 @@ namespace OpenSim.Region.CoreModules.Framework.UserManagement
 
         #region IUserManagement
 
+        public UUID GetUserIdByName(string name)
+        {
+            string[] parts = name.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
+            if (parts.Length < 2)
+                throw new Exception("Name must have 2 components");
+
+            return GetUserIdByName(parts[0], parts[1]);
+        }
+
+        public UUID GetUserIdByName(string firstName, string lastName)
+        {
+            // TODO: Optimize for reverse lookup if this gets used by non-console commands.
+            lock (m_UserCache)
+            {
+                foreach (UserData user in m_UserCache.Values)
+                {
+                    if (user.FirstName == firstName && user.LastName == lastName)
+                        return user.Id;
+                }
+            }
+
+            UserAccount account = m_Scenes[0].UserAccountService.GetUserAccount(UUID.Zero, firstName, lastName);
+
+            if (account != null)
+                return account.PrincipalID;
+
+            return UUID.Zero;
+        }
+
         public string GetUserName(UUID uuid)
         {
             //m_log.DebugFormat("[XXX] GetUserName {0}", uuid);

OpenSim/Region/Framework/Interfaces/IUserManagement.cs

@@ -15,6 +15,21 @@ namespace OpenSim.Region.Framework.Interfaces
         string GetUserUUI(UUID uuid);
         string GetUserServerURL(UUID uuid, string serverType);
 
+        /// <summary>
+        /// Get user ID by the given name.
+        /// </summary>
+        /// <param name="name"></param>
+        /// <returns>UUID.Zero if no user with that name is found or if the name is "Unknown User"</returns>
+        UUID GetUserIdByName(string name);
+
+        /// <summary>
+        /// Get user ID by the given name.
+        /// </summary>
+        /// <param name="firstName"></param>
+        /// <param name="lastName"></param>
+        /// <returns>UUID.Zero if no user with that name is found or if the name is "Unknown User"</returns>
+        UUID GetUserIdByName(string firstName, string lastName);
+
         /// <summary>
         /// Add a user.
         /// </summary>