moving GridInfo application plugin into a common standalone/grid

service, adding a plain REST GET handler returning XML (no LLSD),
adding appropriate add handler calls to OpenSimBase and UserServer.

OpenSim/Common/Communications/GridInfoService.cs

@@ -0,0 +1,125 @@
+/*
+ * 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 OpenSim 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;
+using System.IO;
+using System.Reflection;
+using System.Text;
+using log4net;
+using Nini.Config;
+using Nwc.XmlRpc;
+using OpenSim.Framework.Servers;
+using OpenSim.Framework;
+
+namespace OpenSim.Common.Communications
+{
+    public class GridInfoService
+    {
+        private static readonly ILog _log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        private Hashtable _info = new Hashtable();
+
+        /// <summary>
+        /// Instantiate a GridInfoService object.
+        /// </summary>
+        /// <param name="configPath">path to config path containing
+        /// grid information</param>
+        /// <remarks>
+        /// GridInfoService uses the [GridInfo] section of the
+        /// standard OpenSim.ini file --- which is not optimal, but
+        /// anything else requires a general redesign of the config
+        /// system. 
+        /// </remarks>
+        public GridInfoService(string configPath)
+        {
+            _info["platform"] = "OpenSim";
+            if (File.Exists(configPath))
+            {
+                try
+                {
+                    IConfigSource _configSource = new IniConfigSource(configPath);
+                    IConfig startupCfg = _configSource.Configs["Startup"];
+                    IConfig gridCfg = _configSource.Configs["GridInfo"];
+                    
+                    if (!startupCfg.GetBoolean("gridmode", false)) 
+                        _info["mode"] = "standalone";
+                    else 
+                        _info["mode"] = "grid";
+                    
+                    foreach (string k in gridCfg.GetKeys())
+                    {
+                        _info[k] = gridCfg.GetString(k);
+                    }
+                }
+                catch (Exception)
+                {
+                    _log.DebugFormat("[GridInfoService] cannot get grid info from {0}, using minimal defaults", configPath);
+                }
+            }
+            _log.InfoFormat("[GridInfoService] Grid info service initialized with {0} keys", _info.Count);
+        }
+
+        /// <summary>
+        /// Default constructor, uses OpenSim.ini.
+        /// </summary>
+        public GridInfoService() : this(Path.Combine(Util.configDir(), "OpenSim.ini"))
+        {
+        }
+
+        public XmlRpcResponse XmlRpcGridInfoMethod(XmlRpcRequest request)
+        {
+            XmlRpcResponse response = new XmlRpcResponse();
+            Hashtable responseData = new Hashtable();
+
+            _log.Info("[GridInfo]: Request for grid info");
+
+            foreach (string k in _info.Keys)
+            {
+                responseData[k] = _info[k];
+            }
+            response.Value = responseData;
+
+            return response;
+        }
+
+        public string RestGetGridInfoMethod(string request, string path, string param,
+                                            OSHttpRequest httpRequest, OSHttpResponse httpResponse)
+        {
+            StringBuilder sb = new StringBuilder();
+
+            sb.Append("<gridinfo>\n");
+            foreach (string k in _info.Keys)
+            {
+                sb.AppendFormat("<{0}>{1}</{0}>\n", k, _info[k]);
+            }
+            sb.Append("</gridinfo>\n");
+
+            return sb.ToString();
+        }
+    }
+}