Add a JSON web fetch of the statististics managed by StatsManager.

Disabled by default. Enable by setting
[Startup]ManagedStatsRemoteFetchURI="Something"
and thereafter "http://ServerHTTPPort/Something/" will return all the managed
stats (equivilent to "show stats all" console command).
Accepts queries "cat=", "cont=" and "stat=" to specify statistic category,
container and statistic names. The special name "all" is the default and returns
all values in that group.

OpenSim/Framework/Monitoring/StatsManager.cs

@@ -26,10 +26,12 @@
  */
 
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
+using OpenSim.Framework;
 using OpenMetaverse.StructuredData;
 
 namespace OpenSim.Framework.Monitoring
@@ -262,6 +264,35 @@ namespace OpenSim.Framework.Monitoring
             return map;
         }
 
+        public static Hashtable HandleStatsRequest(Hashtable request)
+        {
+            Hashtable responsedata = new Hashtable();
+            string regpath = request["uri"].ToString();
+            int response_code = 200;
+            string contenttype = "text/json";
+
+            string pCategoryName = StatsManager.AllSubCommand;
+            string pContainerName = StatsManager.AllSubCommand;
+            string pStatName = StatsManager.AllSubCommand;
+
+            if (request.ContainsKey("cat")) pCategoryName = request["cat"].ToString();
+            if (request.ContainsKey("cont")) pContainerName = request["cat"].ToString();
+            if (request.ContainsKey("stat")) pStatName = request["cat"].ToString();
+
+            string strOut = StatsManager.GetStatsAsOSDMap(pCategoryName, pContainerName, pStatName).ToString();
+
+            // m_log.DebugFormat("{0} StatFetch: uri={1}, cat={2}, cont={3}, stat={4}, resp={5}",
+            //                         LogHeader, regpath, pCategoryName, pContainerName, pStatName, strOut);
+
+            responsedata["int_response_code"] = response_code;
+            responsedata["content_type"] = contenttype;
+            responsedata["keepalive"] = false;
+            responsedata["str_response_string"] = strOut;
+            responsedata["access_control_allow_origin"] = "*";
+
+            return responsedata;
+        }
+
 //        /// <summary>
 //        /// Start collecting statistics related to assets.
 //        /// Should only be called once.

OpenSim/Region/Application/OpenSim.cs

@@ -172,6 +172,13 @@ namespace OpenSim
             if (userStatsURI != String.Empty)
                 MainServer.Instance.AddStreamHandler(new OpenSim.UXSimStatusHandler(this));
 
+            if (managedStatsURI != String.Empty)
+            {
+                string urlBase = String.Format("/{0}/", managedStatsURI);
+                MainServer.Instance.AddHTTPHandler(urlBase, StatsManager.HandleStatsRequest);
+                m_log.WarnFormat("[OPENSIM] Enabling remote managed stats fetch. URL = {0}", urlBase);
+            }
+
             if (m_console is RemoteConsole)
             {
                 if (m_consolePort == 0)

OpenSim/Region/Application/OpenSimBase.cs

@@ -75,6 +75,7 @@ namespace OpenSim
         protected int proxyOffset = 0;
         
         public string userStatsURI = String.Empty;
+        public string managedStatsURI = String.Empty;
 
         protected bool m_autoCreateClientStack = true;
 
@@ -188,6 +189,7 @@ namespace OpenSim
                     CreatePIDFile(pidFile);
                 
                 userStatsURI = startupConfig.GetString("Stats_URI", String.Empty);
+                managedStatsURI = startupConfig.GetString("ManagedStatsRemoteFetchURI", String.Empty);
             }
 
             // Load the simulation data service