From 134f86e8d5c414409631b25b8c6f0ee45fbd8631 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Thu, 3 Nov 2016 21:44:39 +1000
Subject: Initial update to OpenSim 0.8.2.1 source code.

---
 OpenSim/Framework/Monitoring/StatsLogger.cs | 151 ++++++++++++++++++++++++++++
 1 file changed, 151 insertions(+)
 create mode 100644 OpenSim/Framework/Monitoring/StatsLogger.cs

(limited to 'OpenSim/Framework/Monitoring/StatsLogger.cs')

diff --git a/OpenSim/Framework/Monitoring/StatsLogger.cs b/OpenSim/Framework/Monitoring/StatsLogger.cs
new file mode 100644
index 0000000..15a37aa
--- /dev/null
+++ b/OpenSim/Framework/Monitoring/StatsLogger.cs
@@ -0,0 +1,151 @@
+/*
+ * 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.IO;
+using System.Reflection;
+using System.Text;
+using System.Timers;
+using log4net;
+
+namespace OpenSim.Framework.Monitoring
+{
+    /// <summary>
+    /// Provides a means to continuously log stats for debugging purposes.
+    /// </summary>
+    public static class StatsLogger
+    {
+        private static readonly ILog m_statsLog = LogManager.GetLogger("special.StatsLogger");
+
+        private static Timer m_loggingTimer;
+        private static int m_statsLogIntervalMs = 5000;
+
+        public static void RegisterConsoleCommands(ICommandConsole console)
+        {
+            console.Commands.AddCommand(
+                "General",
+                false,
+                "stats record",
+                "stats record start|stop",
+                "Control whether stats are being regularly recorded to a separate file.",
+                "For debug purposes.  Experimental.",
+                HandleStatsRecordCommand);
+
+            console.Commands.AddCommand(
+                "General",
+                false,
+                "stats save",
+                "stats save <path>",
+                "Save stats snapshot to a file.  If the file already exists, then the report is appended.",
+                "For debug purposes.  Experimental.",
+                HandleStatsSaveCommand);
+        }
+
+        public static void HandleStatsRecordCommand(string module, string[] cmd)
+        {
+            ICommandConsole con = MainConsole.Instance;
+
+            if (cmd.Length != 3)
+            {
+                con.Output("Usage: stats record start|stop");
+                return;
+            }
+
+            if (cmd[2] == "start")
+            {
+                Start();
+                con.OutputFormat("Now recording all stats to file every {0}ms", m_statsLogIntervalMs);
+            }
+            else if (cmd[2] == "stop")
+            {
+                Stop();
+                con.Output("Stopped recording stats to file.");
+            }
+        }
+
+        public static void HandleStatsSaveCommand(string module, string[] cmd)
+        {
+            ICommandConsole con = MainConsole.Instance;
+
+            if (cmd.Length != 3)
+            {
+                con.Output("Usage: stats save <path>");
+                return;
+            }
+
+            string path = cmd[2];
+            
+            using (StreamWriter sw = new StreamWriter(path, true))
+            {
+                foreach (string line in GetReport())
+                    sw.WriteLine(line);
+            }   
+            
+            MainConsole.Instance.OutputFormat("Stats saved to file {0}", path);
+        }
+
+        public static void Start()
+        {
+            if (m_loggingTimer != null)
+                Stop();
+
+            m_loggingTimer = new Timer(m_statsLogIntervalMs);
+            m_loggingTimer.AutoReset = false;
+            m_loggingTimer.Elapsed += Log;
+            m_loggingTimer.Start();
+        }
+
+        public static void Stop()
+        {
+            if (m_loggingTimer != null)
+            {
+                m_loggingTimer.Stop();
+            }
+        }
+
+        private static void Log(object sender, ElapsedEventArgs e)
+        {
+            foreach (string line in GetReport())
+                m_statsLog.Info(line);
+
+            m_loggingTimer.Start();
+        }
+
+        private static List<string> GetReport()
+        {
+            List<string> lines = new List<string>();
+
+            lines.Add(string.Format("*** STATS REPORT AT {0} ***", DateTime.Now));
+
+            foreach (string report in StatsManager.GetAllStatsReports())
+                lines.Add(report);
+
+            return lines;
+        }
+    }
+}
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