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Thanks, lulurun, for a patch that adds an authenticated session cache to reduce 

"check_auth_session" requests from inventory server to user server.
0.6.0-stable
Mike Mazur 2008-07-25 07:16:27 +00:00
parent 5998fb712a
commit 84cc69573b
2 changed files with 134 additions and 11 deletions
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107
OpenSim/Framework/Communications/Cache/AuthedSessionCache.cs Normal file
View File

@ -0,0 +1,107 @@
using System;
using System.Collections.Generic;
using System.Text;
namespace OpenSim.Framework.Communications.Cache
{
public class AuthedSessionCache
{
public class CacheData
{
private static readonly DateTime UNIX_EPOCH = new DateTime(1970, 1, 1);
private string m_session_id;
private string m_agent_id;
private int m_expire;
private int get_current_unix_time()
{
return (int)(DateTime.UtcNow - UNIX_EPOCH).TotalSeconds;
}
public CacheData(string sid, string aid)
{
m_session_id = sid;
m_agent_id = aid;
m_expire = get_current_unix_time() + DEFAULT_LIFETIME;
}
public CacheData(string sid, string aid, int time_now)
{
m_session_id = sid;
m_agent_id = aid;
m_expire = time_now + DEFAULT_LIFETIME;
}
public string SessionID
{
get { return m_session_id; }
set { m_session_id = value; }
}
public string AgentID
{
get { return m_agent_id; }
set { m_agent_id = value; }
}
public bool isExpired
{
get { return m_expire < get_current_unix_time(); }
}
public void Renew()
{
m_expire = get_current_unix_time() + DEFAULT_LIFETIME;
}
}
private static readonly int DEFAULT_LIFETIME = 30;
private Dictionary<string, CacheData> m_authed_sessions = new Dictionary<string,CacheData>();
private int m_session_lifetime = DEFAULT_LIFETIME;
public AuthedSessionCache()
{
m_session_lifetime = DEFAULT_LIFETIME;
}
public AuthedSessionCache(int timeout)
{
m_session_lifetime = timeout;
}
public CacheData getCachedSession(string session_id, string agent_id)
{
CacheData ret = null;
lock (m_authed_sessions)
{
if (m_authed_sessions.ContainsKey(session_id))
{
CacheData cached_session = m_authed_sessions[session_id];
if (!cached_session.isExpired && cached_session.AgentID == agent_id)
{
ret = m_authed_sessions[session_id];
// auto renew
m_authed_sessions[session_id].Renew();
}
}
}
return ret;
}
public void Add(string session_id, string agent_id)
{
CacheData data = new CacheData(session_id, agent_id);
lock (m_authed_sessions)
{
if (m_authed_sessions.ContainsKey(session_id))
{
m_authed_sessions[session_id] = data;
}
else
{
m_authed_sessions.Add(session_id, data);
}
}
}
}
}

18
OpenSim/Grid/InventoryServer/GridInventoryService.cs
View File

@ -38,6 +38,7 @@ using Nwc.XmlRpc;
using OpenSim.Framework;
using OpenSim.Framework.Communications;
using OpenSim.Framework.Communications.Cache;
namespace OpenSim.Grid.InventoryServer
{
@ -48,8 +49,10 @@ namespace OpenSim.Grid.InventoryServer
{
private static readonly ILog m_log
= LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private static readonly int INVENTORY_DEFAULT_SESSION_TIME = 30; // secs
private string m_userserver_url;
private AuthedSessionCache m_session_cache = new AuthedSessionCache(INVENTORY_DEFAULT_SESSION_TIME);
public GridInventoryService(string userserver_url)
{
@ -72,6 +75,9 @@ namespace OpenSim.Grid.InventoryServer
public bool CheckAuthSession(string session_id, string avatar_id)
{
m_log.InfoFormat("[GRID AGENT INVENTORY]: checking authed session {0} {1}", session_id, avatar_id);
if (m_session_cache.getCachedSession(session_id, avatar_id) == null)
{
// cache miss, ask userserver
Hashtable requestData = new Hashtable();
requestData["avatar_uuid"] = avatar_id;
requestData["session_id"] = session_id;
@ -81,11 +87,21 @@ namespace OpenSim.Grid.InventoryServer
XmlRpcResponse UserResp = UserReq.Send(m_userserver_url, 3000);
Hashtable responseData = (Hashtable)UserResp.Value;
if (responseData.ContainsKey("auth_session") && responseData["auth_session"].ToString() == "TRUE")
{
m_log.Info("[GRID AGENT INVENTORY]: got authed session from userserver");
// add to cache; the session time will be automatically renewed
m_session_cache.Add(session_id, avatar_id);
return true;
}
}
else
{
// cache hits
m_log.Info("[GRID AGENT INVENTORY]: got authed session from cache");
return true;
}
m_log.Info("[GRID AGENT INVENTORY]: unknown session_id, request rejected");
return false;
}