/* * 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.Generic; using System.IO; using System.Reflection; using System.Text; using System.Threading; using System.Timers; using log4net; using log4net.Appender; using log4net.Core; using log4net.Repository; using OpenSim.Framework.Console; using OpenSim.Framework.Statistics; using Timer=System.Timers.Timer; namespace OpenSim.Framework.Servers { /// <summary> /// Common base for the main OpenSimServers (user, grid, inventory, region, etc) /// </summary> public abstract class BaseOpenSimServer { private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); /// <summary> /// This will control a periodic log printout of the current 'show stats' (if they are active) for this /// server. /// </summary> private Timer m_periodicDiagnosticsTimer = new Timer(60 * 60 * 1000); protected ConsoleBase m_console; protected OpenSimAppender m_consoleAppender; /// <summary> /// Time at which this server was started /// </summary> protected DateTime m_startuptime; /// <summary> /// Record the initial startup directory for info purposes /// </summary> protected string m_startupDirectory = Environment.CurrentDirectory; /// <summary> /// Server version information. Usually VersionInfo + information about svn revision, operating system, etc. /// </summary> protected string m_version; protected BaseHttpServer m_httpServer; public BaseHttpServer HttpServer { get { return m_httpServer; } } /// <summary> /// Holds the non-viewer statistics collection object for this service/server /// </summary> protected IStatsCollector m_stats; public BaseOpenSimServer() { m_startuptime = DateTime.Now; m_version = VersionInfo.Version; m_periodicDiagnosticsTimer.Elapsed += new ElapsedEventHandler(LogDiagnostics); m_periodicDiagnosticsTimer.Enabled = true; // Add ourselves to thread monitoring. This thread will go on to become the console listening thread Thread.CurrentThread.Name = "ConsoleThread"; ThreadTracker.Add(Thread.CurrentThread); } /// <summary> /// Must be overriden by child classes for their own server specific startup behaviour. /// </summary> protected virtual void StartupSpecific() { if (m_console != null) { ILoggerRepository repository = LogManager.GetRepository(); IAppender[] appenders = repository.GetAppenders(); foreach (IAppender appender in appenders) { if (appender.Name == "Console") { m_consoleAppender = (OpenSimAppender)appender; break; } } if (null == m_consoleAppender) { Notice("No appender named Console found (see the log4net config file for this executable)!"); } else { m_consoleAppender.Console = m_console; // If there is no threshold set then the threshold is effectively everything. if (null == m_consoleAppender.Threshold) m_consoleAppender.Threshold = Level.All; Notice(String.Format("Console log level is {0}", m_consoleAppender.Threshold)); } m_console.Commands.AddCommand("base", false, "quit", "quit", "Quit the application", HandleQuit); m_console.Commands.AddCommand("base", false, "shutdown", "shutdown", "Quit the application", HandleQuit); m_console.Commands.AddCommand("base", false, "set log level", "set log level <level>", "Set the console logging level", HandleLogLevel); m_console.Commands.AddCommand("base", false, "show info", "show info", "Show general information", HandleShow); m_console.Commands.AddCommand("base", false, "show stats", "show stats", "Show statistics", HandleShow); m_console.Commands.AddCommand("base", false, "show threads", "show threads", "Show thread status", HandleShow); m_console.Commands.AddCommand("base", false, "show uptime", "show uptime", "Show server uptime", HandleShow); m_console.Commands.AddCommand("base", false, "show version", "show version", "Show server version", HandleShow); } } /// <summary> /// Should be overriden and referenced by descendents if they need to perform extra shutdown processing /// </summary> public virtual void ShutdownSpecific() {} /// <summary> /// Provides a list of help topics that are available. Overriding classes should append their topics to the /// information returned when the base method is called. /// </summary> /// /// <returns> /// A list of strings that represent different help topics on which more information is available /// </returns> protected virtual List<string> GetHelpTopics() { return new List<string>(); } /// <summary> /// Print statistics to the logfile, if they are active /// </summary> protected void LogDiagnostics(object source, ElapsedEventArgs e) { StringBuilder sb = new StringBuilder("DIAGNOSTICS\n\n"); sb.Append(GetUptimeReport()); if (m_stats != null) { sb.Append(m_stats.Report()); } sb.Append(Environment.NewLine); sb.Append(GetThreadsReport()); m_log.Debug(sb); } /// <summary> /// Get a report about the registered threads in this server. /// </summary> protected string GetThreadsReport() { StringBuilder sb = new StringBuilder(); List<Thread> threads = ThreadTracker.GetThreads(); if (threads == null) { sb.Append("Thread tracking is only enabled in DEBUG mode."); } else { sb.Append(threads.Count + " threads are being tracked:" + Environment.NewLine); foreach (Thread t in threads) { if (t.IsAlive) { sb.Append( "ID: " + t.ManagedThreadId + ", Name: " + t.Name + ", Alive: " + t.IsAlive + ", Pri: " + t.Priority + ", State: " + t.ThreadState + Environment.NewLine); } else { try { sb.Append("ID: " + t.ManagedThreadId + ", Name: " + t.Name + ", DEAD" + Environment.NewLine); } catch { sb.Append("THREAD ERROR" + Environment.NewLine); } } } } return sb.ToString(); } /// <summary> /// Return a report about the uptime of this server /// </summary> /// <returns></returns> protected string GetUptimeReport() { StringBuilder sb = new StringBuilder(String.Format("Time now is {0}\n", DateTime.Now)); sb.Append(String.Format("Server has been running since {0}, {1}\n", m_startuptime.DayOfWeek, m_startuptime)); sb.Append(String.Format("That is an elapsed time of {0}\n", DateTime.Now - m_startuptime)); return sb.ToString(); } /// <summary> /// Performs initialisation of the scene, such as loading configuration from disk. /// </summary> public virtual void Startup() { m_log.Info("[STARTUP]: Beginning startup processing"); EnhanceVersionInformation(); m_log.Info("[STARTUP]: Version: " + m_version + "\n"); StartupSpecific(); TimeSpan timeTaken = DateTime.Now - m_startuptime; m_log.InfoFormat("[STARTUP]: Startup took {0}m {1}s", timeTaken.Minutes, timeTaken.Seconds); } /// <summary> /// Should be overriden and referenced by descendents if they need to perform extra shutdown processing /// </summary> public virtual void Shutdown() { ShutdownSpecific(); m_log.Info("[SHUTDOWN]: Shutdown processing on main thread complete. Exiting..."); Environment.Exit(0); } private void HandleQuit(string module, string[] args) { Shutdown(); } private void HandleLogLevel(string module, string[] cmd) { if (null == m_consoleAppender) { Notice("No appender named Console found (see the log4net config file for this executable)!"); return; } string rawLevel = cmd[3]; ILoggerRepository repository = LogManager.GetRepository(); Level consoleLevel = repository.LevelMap[rawLevel]; if (consoleLevel != null) m_consoleAppender.Threshold = consoleLevel; else Notice( String.Format( "{0} is not a valid logging level. Valid logging levels are ALL, DEBUG, INFO, WARN, ERROR, FATAL, OFF", rawLevel)); Notice(String.Format("Console log level is {0}", m_consoleAppender.Threshold)); } /// <summary> /// Show help information /// </summary> /// <param name="helpArgs"></param> protected virtual void ShowHelp(string[] helpArgs) { Notice(""); if (helpArgs.Length == 0) { Notice("set log level [level] - change the console logging level only. For example, off or debug."); Notice("show info - show server information (e.g. startup path)."); if (m_stats != null) Notice("show stats - show statistical information for this server"); Notice("show threads - list tracked threads"); Notice("show uptime - show server startup time and uptime."); Notice("show version - show server version."); Notice(""); return; } } public virtual void HandleShow(string module, string[] cmd) { List<string> args = new List<string>(cmd); args.RemoveAt(0); string[] showParams = args.ToArray(); switch (showParams[0]) { case "info": Notice("Version: " + m_version); Notice("Startup directory: " + m_startupDirectory); break; case "stats": if (m_stats != null) Notice(m_stats.Report()); break; case "threads": Notice(GetThreadsReport()); break; case "uptime": Notice(GetUptimeReport()); break; case "version": Notice( String.Format( "Version: {0} (interface version {1})", m_version, VersionInfo.MajorInterfaceVersion)); break; } } /// <summary> /// Console output is only possible if a console has been established. /// That is something that cannot be determined within this class. So /// all attempts to use the console MUST be verified. /// </summary> protected void Notice(string msg) { if (m_console != null) { m_console.Notice(msg); } } /// <summary> /// Enhance the version string with extra information if it's available. /// </summary> protected void EnhanceVersionInformation() { string buildVersion = string.Empty; // Add subversion revision information if available // Try file "svn_revision" in the current directory first, then the .svn info. // This allows to make the revision available in simulators not running from the source tree. // FIXME: Making an assumption about the directory we're currently in - we do this all over the place // elsewhere as well string svnRevisionFileName = "svn_revision"; string svnFileName = ".svn/entries"; string inputLine; int strcmp; if (File.Exists(svnRevisionFileName)) { StreamReader RevisionFile = File.OpenText(svnRevisionFileName); buildVersion = RevisionFile.ReadLine(); buildVersion.Trim(); RevisionFile.Close(); } if (string.IsNullOrEmpty(buildVersion) && File.Exists(svnFileName)) { StreamReader EntriesFile = File.OpenText(svnFileName); inputLine = EntriesFile.ReadLine(); while (inputLine != null) { // using the dir svn revision at the top of entries file strcmp = String.Compare(inputLine, "dir"); if (strcmp == 0) { buildVersion = EntriesFile.ReadLine(); break; } else { inputLine = EntriesFile.ReadLine(); } } EntriesFile.Close(); } m_version += string.IsNullOrEmpty(buildVersion) ? " " : ("." + buildVersion + " ").Substring(0, 6); } } }