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* Adds an active log to the WebStats console. for an example of it in use as it is right now see http://wmcv.com:9000/SStats/

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* It still isn't quite ready to be used mainstream.
* A couple of things to note, it doesn't keep track of the logs if nobody is looking at the stats.
* It doesn't read the whole log file.  Just the last 10 lines of the stream.  Tested to 1GB+ logfiles with no noticeable performance issues.
This commit is contained in:
Teravus Ovares
2009-01-05 04:09:04 +00:00
parent 3b0eb958a8
commit e4a8cc192d
5 changed files with 185 additions and 11 deletions
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66
OpenSim/Region/UserStatistics/WebStatsModule.cs
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@@ -1,8 +1,11 @@
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net; // to be used for REST-->Grid shortly
using System.Reflection;
using System.Text;
using System.Threading;
using log4net;
using Nini.Config;
using OpenMetaverse;
@@ -25,14 +28,19 @@ namespace OpenSim.Region.UserStatistics
{
private static readonly ILog m_log =
LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
private static SqliteConnection dbConn;
private Dictionary<UUID, UserSessionID> m_sessions = new Dictionary<UUID, UserSessionID>();
private List<Scene> m_scene = new List<Scene>();
private Dictionary<string, IStatsController> reports = new Dictionary<string, IStatsController>();
private Dictionary<UUID, USimStatsData> m_simstatsCounters = new Dictionary<UUID, USimStatsData>();
private const int updateStatsMod = 6;
private int updateLogMod = 1;
private volatile int updateLogCounter = 0;
private volatile int concurrencyCounter = 0;
private bool enabled = false;
private string m_loglines = String.Empty;
private volatile int lastHit = 12000;
public virtual void Initialise(Scene scene, IConfigSource config)
@@ -42,7 +50,8 @@ namespace OpenSim.Region.UserStatistics
{
cnfg = config.Configs["WebStats"];
enabled = cnfg.GetBoolean("enabled", false);
}
catch (Exception)
{
@@ -68,12 +77,14 @@ namespace OpenSim.Region.UserStatistics
Updater_distributor updatedep = new Updater_distributor();
ActiveConnectionsAJAX ajConnections = new ActiveConnectionsAJAX();
SimStatsAJAX ajSimStats = new SimStatsAJAX();
LogLinesAJAX ajLogLines = new LogLinesAJAX();
reports.Add("", rep);
reports.Add("index.aspx", rep);
reports.Add("prototype.js", protodep);
reports.Add("updater.js", updatedep);
reports.Add("activeconnectionsajax.ajax", ajConnections);
reports.Add("simstatsajax.ajax", ajSimStats);
reports.Add("activelogajax.ajax", ajLogLines);
scene.CommsManager.HttpServer.AddHTTPHandler("/SStats/", HandleStatsRequest);
@@ -95,10 +106,17 @@ namespace OpenSim.Region.UserStatistics
try
{
if (concurrencyCounter > 0)
// Ignore the update if there's a report running right now
// ignore the update if there hasn't been a hit in 30 seconds.
if (concurrencyCounter > 0 && System.Environment.TickCount - lastHit < 30000)
return;
if ((updateLogCounter++ % updateLogMod) == 0)
{
m_loglines = readLogLines(10);
if (updateLogCounter > 10000) updateLogCounter = 1;
}
USimStatsData ss = m_simstatsCounters[stats.RegionUUID];
if ((++ss.StatsCounter % updateStatsMod) == 0)
@@ -114,6 +132,7 @@ namespace OpenSim.Region.UserStatistics
public Hashtable HandleStatsRequest(Hashtable request)
{
lastHit = System.Environment.TickCount;
Hashtable responsedata = new Hashtable();
string regpath = request["uri"].ToString();
int response_code = 404;
@@ -130,6 +149,7 @@ namespace OpenSim.Region.UserStatistics
repParams["DatabaseConnection"] = dbConn;
repParams["Scenes"] = m_scene;
repParams["SimStats"] = m_simstatsCounters;
repParams["LogLines"] = m_loglines;
concurrencyCounter++;
@@ -245,6 +265,7 @@ namespace OpenSim.Region.UserStatistics
{
lock (m_scene)
{
updateLogMod = m_scene.Count * 2;
foreach (Scene scene in m_scene)
{
scene.EventManager.OnRegisterCaps += OnRegisterCaps;
@@ -315,6 +336,45 @@ namespace OpenSim.Region.UserStatistics
}
public string readLogLines( int amount)
{
Encoding encoding = Encoding.ASCII;
int sizeOfChar = encoding.GetByteCount("\n");
byte[] buffer = encoding.GetBytes("\n");
string logfile = Util.logDir() + "/" + "OpenSim.log";
FileStream fs = new FileStream(logfile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
Int64 tokenCount = 0;
Int64 endPosition = fs.Length / sizeOfChar;
for (Int64 position = sizeOfChar; position < endPosition; position += sizeOfChar)
{
fs.Seek(-position, SeekOrigin.End);
fs.Read(buffer, 0, buffer.Length);
if (encoding.GetString(buffer) == "\n")
{
tokenCount++;
if (tokenCount == amount)
{
byte[] returnBuffer = new byte[fs.Length - fs.Position];
fs.Read(returnBuffer, 0, returnBuffer.Length);
fs.Close();
fs.Dispose();
return encoding.GetString(returnBuffer);
}
}
}
// handle case where number of tokens in file is less than numberOfTokens
fs.Seek(0, SeekOrigin.Begin);
buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Close();
fs.Dispose();
return encoding.GetString(buffer);
}
public UUID GetRegionUUIDFromHandle(ulong regionhandle)
{
lock (m_scene)