Added a UserAccountCache to the UserAccountServiceConnectors. Uses a CenomeCache.

OpenSim/Region/CoreModules/ServiceConnectorsOut/UserAccounts/LocalUserAccountServiceConnector.cs

@@ -46,6 +46,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts
                 MethodBase.GetCurrentMethod().DeclaringType);
 
         private IUserAccountService m_UserService;
+        private UserAccountCache m_Cache;
 
         private bool m_Enabled = false;
 
@@ -96,6 +97,8 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts
                         return;
                     }
                     m_Enabled = true;
+                    m_Cache = new UserAccountCache();
+
                     m_log.Info("[USER CONNECTOR]: Local user connector enabled");
                 }
             }
@@ -139,12 +142,28 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts
 
         public UserAccount GetUserAccount(UUID scopeID, UUID userID)
         {
-            return m_UserService.GetUserAccount(scopeID, userID);
+            UserAccount account = m_Cache.Get(userID);
+            if (account != null)
+                return account;
+
+            account = m_UserService.GetUserAccount(scopeID, userID);
+            if (account != null)
+                m_Cache.Cache(account);
+
+            return account;
         }
 
-        public UserAccount GetUserAccount(UUID scopeID, string FirstName, string LastName)
+        public UserAccount GetUserAccount(UUID scopeID, string firstName, string lastName)
         {
-            return m_UserService.GetUserAccount(scopeID, FirstName, LastName);
+            UserAccount account = m_Cache.Get(firstName + " " + lastName);
+            if (account != null)
+                return account;
+
+            account = m_UserService.GetUserAccount(scopeID, firstName, lastName);
+            if (account != null)
+                m_Cache.Cache(account);
+
+            return account;
         }
 
         public UserAccount GetUserAccount(UUID scopeID, string Email)

OpenSim/Region/CoreModules/ServiceConnectorsOut/UserAccounts/RemoteUserAccountServiceConnector.cs

@@ -34,6 +34,8 @@ using OpenSim.Region.Framework.Scenes;
 using OpenSim.Services.Interfaces;
 using OpenSim.Services.Connectors;
 
+using OpenMetaverse;
+
 namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts
 {
     public class RemoteUserAccountServicesConnector : UserAccountServicesConnector,
@@ -44,6 +46,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts
                 MethodBase.GetCurrentMethod().DeclaringType);
 
         private bool m_Enabled = false;
+        private UserAccountCache m_Cache;
 
         public Type ReplaceableInterface 
         {
@@ -73,6 +76,7 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts
                     m_Enabled = true;
 
                     base.Initialise(source);
+                    m_Cache = new UserAccountCache();
 
                     m_log.Info("[USER CONNECTOR]: Remote users enabled");
                 }
@@ -110,5 +114,35 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts
             if (!m_Enabled)
                 return;
         }
+
+        #region Overwritten methods from IUserAccountService
+
+        public override UserAccount GetUserAccount(UUID scopeID, UUID userID)
+        {
+            UserAccount account = m_Cache.Get(userID);
+            if (account != null)
+                return account;
+
+            account = base.GetUserAccount(scopeID, userID);
+            if (account != null)
+                m_Cache.Cache(account);
+
+            return account;
+        }
+
+        public override UserAccount GetUserAccount(UUID scopeID, string firstName, string lastName)
+        {
+            UserAccount account = m_Cache.Get(firstName + " " + lastName);
+            if (account != null)
+                return account;
+
+            account = base.GetUserAccount(scopeID, firstName, lastName);
+            if (account != null)
+                m_Cache.Cache(account);
+
+            return account;
+        }
+
+        #endregion
     }
 }

OpenSim/Region/CoreModules/ServiceConnectorsOut/UserAccounts/UserAccountCache.cs

@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+using System;
+using System.Reflection;
+using System.Collections.Generic;
+using OpenSim.Framework;
+using OpenSim.Services.Interfaces;
+using OpenMetaverse;
+using log4net;
+
+namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts
+{
+    public class UserAccountCache
+    {
+        //private static readonly ILog m_log =
+        //        LogManager.GetLogger(
+        //        MethodBase.GetCurrentMethod().DeclaringType);
+        
+        private ICnmCache<UUID, UserAccount> m_UUIDCache;
+        private Dictionary<string, UUID> m_NameCache;
+
+        public UserAccountCache()
+        {
+            // Warning: the size values are a bit fuzzy. What matters
+            // most for this cache is the count value (128 entries).
+            m_UUIDCache = CnmSynchronizedCache<UUID, UserAccount>.Synchronized(new CnmMemoryCache<UUID, UserAccount>(
+                        128, 128*512, TimeSpan.FromMinutes(30.0)));
+            m_NameCache = new Dictionary<string, UUID>(); // this one is unbound
+        }
+
+        public void Cache(UserAccount account)
+        {
+            m_UUIDCache.Set(account.PrincipalID, account, 512);
+            m_NameCache[account.Name] = account.PrincipalID;
+
+            //m_log.DebugFormat("[USER CACHE]: cached user {0} {1}", account.FirstName, account.LastName);
+        }
+
+        public UserAccount Get(UUID userID)
+        {
+            UserAccount account = null;
+            if (m_UUIDCache.TryGetValue(userID, out account))
+            {
+                //m_log.DebugFormat("[USER CACHE]: Account {0} {1} found in cache", account.FirstName, account.LastName);
+                return account;
+            }
+
+            return null;
+        }
+
+        public UserAccount Get(string name)
+        {
+            if (!m_NameCache.ContainsKey(name))
+                return null;
+
+            UserAccount account = null;
+            if (m_UUIDCache.TryGetValue(m_NameCache[name], out account))
+                return account;
+
+            return null;
+        }
+    }
+}

OpenSim/Services/Connectors/UserAccounts/UserAccountServiceConnector.cs

@@ -82,7 +82,7 @@ namespace OpenSim.Services.Connectors
             m_ServerURI = serviceURI;
         }
 
-        public UserAccount GetUserAccount(UUID scopeID, string firstName, string lastName)
+        public virtual UserAccount GetUserAccount(UUID scopeID, string firstName, string lastName)
         {
             Dictionary<string, object> sendData = new Dictionary<string, object>();
             //sendData["SCOPEID"] = scopeID.ToString();
@@ -97,7 +97,7 @@ namespace OpenSim.Services.Connectors
             return SendAndGetReply(sendData);
         }
 
-        public UserAccount GetUserAccount(UUID scopeID, string email)
+        public virtual UserAccount GetUserAccount(UUID scopeID, string email)
         {
             Dictionary<string, object> sendData = new Dictionary<string, object>();
             //sendData["SCOPEID"] = scopeID.ToString();
@@ -110,8 +110,8 @@ namespace OpenSim.Services.Connectors
 
             return SendAndGetReply(sendData);
         }
-        
+
-        public UserAccount GetUserAccount(UUID scopeID, UUID userID)
+        public virtual UserAccount GetUserAccount(UUID scopeID, UUID userID)
         {
             Dictionary<string, object> sendData = new Dictionary<string, object>();
             //sendData["SCOPEID"] = scopeID.ToString();