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Prevent hammering the grid services with llRequestAgentData requests. Cache the 

user information permanently, and the online status for 20 seconds. Also
cache negatives.
0.6.9-post-fixes
Melanie 2010-08-05 23:03:30 +01:00
parent 2de3972ece
commit 4f48afd990
1 changed files with 43 additions and 5 deletions
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46
OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
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@ -68,6 +68,13 @@ using System.Reflection;
namespace OpenSim.Region.ScriptEngine.Shared.Api
{
// MUST be a ref type
public class UserInfoCacheEntry
{
public int time;
public UserProfileData userProfile;
}
/// <summary>
/// Contains all LSL ll-functions. This class will be in Default AppDomain.
/// </summary>
@ -92,6 +99,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
protected int m_scriptConsoleChannel = 0;
protected bool m_scriptConsoleChannelEnabled = false;
protected IUrlModule m_UrlModule = null;
protected Dictionary<UUID, UserInfoCacheEntry> m_userInfoCache =
new Dictionary<UUID, UserInfoCacheEntry>();
public void Initialize(IScriptEngine ScriptEngine, SceneObjectPart host, uint localID, UUID itemID)
{
@ -3885,11 +3894,40 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
UserProfileData userProfile =
World.CommsManager.UserService.GetUserProfile(uuid);
UserAgentData userAgent =
World.CommsManager.UserService.GetAgentByUUID(uuid);
UserInfoCacheEntry ce;
if (!m_userInfoCache.TryGetValue(uuid, out ce))
{
userProfile = World.CommsManager.UserService.GetUserProfile(uuid);
if (userProfile == null)
{
m_userInfoCache[uuid] = null; // Cache negative
return UUID.Zero.ToString();
}
if (userProfile == null || userAgent == null)
return UUID.Zero.ToString();
UserAgentData userAgent =
World.CommsManager.UserService.GetAgentByUUID(uuid);
if (userProfile == null || userAgent == null)
return UUID.Zero.ToString();
ce = new UserInfoCacheEntry();
ce.time = Util.EnvironmentTickCount();
ce.userProfile = userProfile;
}
else
{
if (ce == null)
return UUID.Zero.ToString();
userProfile = ce.userProfile;
}
if (Util.EnvironmentTickCount() < ce.time || (Util.EnvironmentTickCount() - ce.time) >= 20000)
{
userProfile = World.CommsManager.UserService.GetUserProfile(uuid);
ce.time = Util.EnvironmentTickCount();
ce.userProfile = userProfile;
}
string reply = String.Empty;