1 files changed, 339 insertions, 0 deletions

diff --git a/OpenSim/Region/OptionalModules/Framework/Monitoring/ServerStats.cs b/OpenSim/Region/OptionalModules/Framework/Monitoring/ServerStats.cs
new file mode 100644
index 0000000..6e74ce0
--- /dev/null
+++ b/OpenSim/Region/OptionalModules/Framework/Monitoring/ServerStats.cs
@@ -0,0 +1,339 @@
+/*
+ * 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.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Net.NetworkInformation;
+using System.Text;
+using System.Threading;
+
+using log4net;
+using Mono.Addins;
+using Nini.Config;
+
+using OpenSim.Framework;
+using OpenSim.Framework.Console;
+using OpenSim.Framework.Monitoring;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+
+using OpenMetaverse.StructuredData;
+
+namespace OpenSim.Region.OptionalModules.Framework.Monitoring
+{
+[Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "ServerStatistics")]
+public class ServerStats : ISharedRegionModule
+{
+    private readonly ILog m_log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+    private readonly string LogHeader = "[SERVER STATS]";
+
+    public bool Enabled = false;
+    private static Dictionary<string, Stat> RegisteredStats = new Dictionary<string, Stat>();
+
+    public readonly string CategoryServer = "server";
+
+    public readonly string ContainerProcessor = "processor";
+    public readonly string ContainerMemory = "memory";
+    public readonly string ContainerNetwork = "network";
+    public readonly string ContainerProcess = "process";
+
+    public string NetworkInterfaceTypes = "Ethernet";
+
+    readonly int performanceCounterSampleInterval = 500;
+    int lastperformanceCounterSampleTime = 0;
+
+    private class PerfCounterControl
+    {
+        public PerformanceCounter perfCounter;
+        public int lastFetch;
+        public string name;
+        public PerfCounterControl(PerformanceCounter pPc)
+            : this(pPc, String.Empty)
+        {
+        }
+        public PerfCounterControl(PerformanceCounter pPc, string pName)
+        {
+            perfCounter = pPc;
+            lastFetch = 0;
+            name = pName;
+        }
+    }
+
+    PerfCounterControl processorPercentPerfCounter = null;
+
+    #region ISharedRegionModule
+    // IRegionModuleBase.Name
+    public string Name { get { return "Server Stats"; } }
+    // IRegionModuleBase.ReplaceableInterface
+    public Type ReplaceableInterface { get { return null; } }
+    // IRegionModuleBase.Initialize
+    public void Initialise(IConfigSource source)
+    {
+        IConfig cfg = source.Configs["Monitoring"];
+
+        if (cfg != null)
+            Enabled = cfg.GetBoolean("ServerStatsEnabled", true);
+
+        if (Enabled)
+        {
+            NetworkInterfaceTypes = cfg.GetString("NetworkInterfaceTypes", "Ethernet");
+        }
+    }
+    // IRegionModuleBase.Close
+    public void Close()
+    {
+        if (RegisteredStats.Count > 0)
+        {
+            foreach (Stat stat in RegisteredStats.Values)
+            {
+                StatsManager.DeregisterStat(stat);
+                stat.Dispose();
+            }
+            RegisteredStats.Clear();
+        }
+    }
+    // IRegionModuleBase.AddRegion
+    public void AddRegion(Scene scene)
+    {
+    }
+    // IRegionModuleBase.RemoveRegion
+    public void RemoveRegion(Scene scene)
+    {
+    }
+    // IRegionModuleBase.RegionLoaded
+    public void RegionLoaded(Scene scene)
+    {
+    }
+    // ISharedRegionModule.PostInitialize
+    public void PostInitialise()
+    {
+        if (RegisteredStats.Count == 0)
+        {
+            RegisterServerStats();
+        }
+    }
+    #endregion ISharedRegionModule
+
+    private void MakeStat(string pName, string pDesc, string pUnit, string pContainer, Action<Stat> act)
+    {
+        string desc = pDesc;
+        if (desc == null)
+            desc = pName;
+        Stat stat = new Stat(pName, pName, desc, pUnit, CategoryServer, pContainer, StatType.Pull, act, StatVerbosity.Info);
+        StatsManager.RegisterStat(stat);
+        RegisteredStats.Add(pName, stat);
+    }
+
+    public void RegisterServerStats()
+    {
+        lastperformanceCounterSampleTime = Util.EnvironmentTickCount();
+        PerformanceCounter tempPC;
+        Stat tempStat;
+        string tempName;
+
+        try
+        {
+            tempName = "CPUPercent";
+            tempPC = new PerformanceCounter("Processor", "% Processor Time", "_Total");
+            processorPercentPerfCounter = new PerfCounterControl(tempPC);
+            // A long time bug in mono is that CPU percent is reported as CPU percent idle. Windows reports CPU percent busy.
+            tempStat = new Stat(tempName, tempName, "", "percent", CategoryServer, ContainerProcessor,
+                            StatType.Pull, (s) => { GetNextValue(s, processorPercentPerfCounter, Util.IsWindows() ? 1 : -1); },
+                            StatVerbosity.Info);
+            StatsManager.RegisterStat(tempStat);
+            RegisteredStats.Add(tempName, tempStat);
+
+            MakeStat("TotalProcessorTime", null, "sec", ContainerProcessor, 
+                                (s) => { s.Value = Process.GetCurrentProcess().TotalProcessorTime.TotalSeconds; });
+
+            MakeStat("UserProcessorTime", null, "sec", ContainerProcessor,
+                                (s) => { s.Value = Process.GetCurrentProcess().UserProcessorTime.TotalSeconds; });
+
+            MakeStat("PrivilegedProcessorTime", null, "sec", ContainerProcessor,
+                                (s) => { s.Value = Process.GetCurrentProcess().PrivilegedProcessorTime.TotalSeconds; });
+
+            MakeStat("Threads", null, "threads", ContainerProcessor,
+                                (s) => { s.Value = Process.GetCurrentProcess().Threads.Count; });
+        }
+        catch (Exception e)
+        {
+            m_log.ErrorFormat("{0} Exception creating 'Process': {1}", LogHeader, e);
+        }
+
+        try
+        {
+            List<string> okInterfaceTypes = new List<string>(NetworkInterfaceTypes.Split(','));
+
+            IEnumerable<NetworkInterface> nics = NetworkInterface.GetAllNetworkInterfaces();
+            foreach (NetworkInterface nic in nics)
+            {
+                if (nic.OperationalStatus != OperationalStatus.Up)
+                    continue;
+
+                string nicInterfaceType = nic.NetworkInterfaceType.ToString();
+                if (!okInterfaceTypes.Contains(nicInterfaceType))
+                {
+                    m_log.DebugFormat("{0} Not including stats for network interface '{1}' of type '{2}'.",
+                                            LogHeader, nic.Name, nicInterfaceType);
+                    m_log.DebugFormat("{0}     To include, add to comma separated list in [Monitoring]NetworkInterfaceTypes={1}",
+                                            LogHeader, NetworkInterfaceTypes);
+                    continue;
+                }
+
+                if (nic.Supports(NetworkInterfaceComponent.IPv4))
+                {
+                    IPv4InterfaceStatistics nicStats = nic.GetIPv4Statistics();
+                    if (nicStats != null)
+                    {
+                        MakeStat("BytesRcvd/" + nic.Name, nic.Name, "KB", ContainerNetwork,
+                                        (s) => { LookupNic(s, (ns) => { return ns.BytesReceived; }, 1024.0); });
+                        MakeStat("BytesSent/" + nic.Name, nic.Name, "KB", ContainerNetwork,
+                                        (s) => { LookupNic(s, (ns) => { return ns.BytesSent; }, 1024.0); });
+                        MakeStat("TotalBytes/" + nic.Name, nic.Name, "KB", ContainerNetwork,
+                                        (s) => { LookupNic(s, (ns) => { return ns.BytesSent + ns.BytesReceived; }, 1024.0); });
+                    }
+                }
+                // TODO: add IPv6 (it may actually happen someday)
+            }
+        }
+        catch (Exception e)
+        {
+            m_log.ErrorFormat("{0} Exception creating 'Network Interface': {1}", LogHeader, e);
+        }
+
+        MakeStat("ProcessMemory", null, "MB", ContainerMemory,
+                            (s) => { s.Value = Process.GetCurrentProcess().WorkingSet64 / 1024d / 1024d; });
+        MakeStat("ObjectMemory", null, "MB", ContainerMemory,
+                            (s) => { s.Value = GC.GetTotalMemory(false) / 1024d / 1024d; });
+        MakeStat("LastMemoryChurn", null, "MB/sec", ContainerMemory,
+                            (s) => { s.Value = Math.Round(MemoryWatchdog.LastMemoryChurn * 1000d / 1024d / 1024d, 3); });
+        MakeStat("AverageMemoryChurn", null, "MB/sec", ContainerMemory,
+                            (s) => { s.Value = Math.Round(MemoryWatchdog.AverageMemoryChurn * 1000d / 1024d / 1024d, 3); });
+    }
+
+    // Notes on performance counters: 
+    //  "How To Read Performance Counters": http://blogs.msdn.com/b/bclteam/archive/2006/06/02/618156.aspx
+    //  "How to get the CPU Usage in C#": http://stackoverflow.com/questions/278071/how-to-get-the-cpu-usage-in-c
+    //  "Mono Performance Counters": http://www.mono-project.com/Mono_Performance_Counters
+    private delegate double PerfCounterNextValue();
+    private void GetNextValue(Stat stat, PerfCounterControl perfControl)
+    {
+        GetNextValue(stat, perfControl, 1.0);
+    }
+    private void GetNextValue(Stat stat, PerfCounterControl perfControl, double factor)
+    {
+        if (Util.EnvironmentTickCountSubtract(perfControl.lastFetch) > performanceCounterSampleInterval)
+        {
+            if (perfControl != null && perfControl.perfCounter != null)
+            {
+                try
+                {
+                    // Kludge for factor to run double duty. If -1, subtract the value from one
+                    if (factor == -1)
+                        stat.Value = 1 - perfControl.perfCounter.NextValue();
+                    else
+                        stat.Value = perfControl.perfCounter.NextValue() / factor;
+                }
+                catch (Exception e)
+                {
+                    m_log.ErrorFormat("{0} Exception on NextValue fetching {1}: {2}", LogHeader, stat.Name, e);
+                }
+                perfControl.lastFetch = Util.EnvironmentTickCount();
+            }
+        }
+    }
+
+    // Lookup the nic that goes with this stat and set the value by using a fetch action.
+    // Not sure about closure with delegates inside delegates.
+    private delegate double GetIPv4StatValue(IPv4InterfaceStatistics interfaceStat);
+    private void LookupNic(Stat stat, GetIPv4StatValue getter, double factor)
+    {
+        // Get the one nic that has the name of this stat
+        IEnumerable<NetworkInterface> nics = NetworkInterface.GetAllNetworkInterfaces().Where(
+                              (network) => network.Name == stat.Description);
+        try
+        {
+            foreach (NetworkInterface nic in nics)
+            {
+                IPv4InterfaceStatistics intrStats = nic.GetIPv4Statistics();
+                if (intrStats != null)
+                {
+                    double newVal = Math.Round(getter(intrStats) / factor, 3);
+                    stat.Value = newVal;
+                }
+                break;
+            }
+        }
+        catch
+        {
+            // There are times interfaces go away so we just won't update the stat for this
+            m_log.ErrorFormat("{0} Exception fetching stat on interface '{1}'", LogHeader, stat.Description);
+        }
+    }
+}
+
+public class ServerStatsAggregator : Stat
+{
+    public ServerStatsAggregator(
+        string shortName,
+        string name,
+        string description,
+        string unitName,
+        string category,
+        string container
+        )
+        : base(
+            shortName,
+            name,
+            description,
+            unitName,
+            category,
+            container,
+            StatType.Push,
+            MeasuresOfInterest.None,
+            null,
+            StatVerbosity.Info)
+    {
+    }
+    public override string ToConsoleString()
+    {
+        StringBuilder sb = new StringBuilder();
+
+        return sb.ToString();
+    }
+
+    public override OSDMap ToOSDMap()
+    {
+        OSDMap ret = new OSDMap();
+
+        return ret;
+    }
+}
+
+}