aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Framework/Servers/BaseOpenSimServer.cs
blob: 4c381d0f86d4de85085aa68ebb27b26be6912990 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
/*
 * 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.IO;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Timers;
using log4net;
using log4net.Appender;
using log4net.Core;
using log4net.Repository;
using OpenSim.Framework;
using OpenSim.Framework.Console;
using OpenSim.Framework.Servers;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Framework.Statistics;
using Timer=System.Timers.Timer;

using OpenMetaverse;
using OpenMetaverse.StructuredData;


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 CommandConsole m_console;
        protected OpenSimAppender m_consoleAppender;
        protected IAppender m_logFileAppender = null; 

        /// <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 git commit, operating system, etc.
        /// </summary>
        protected string m_version;

        protected string m_pidFile = String.Empty;
        
        /// <summary>
        /// Random uuid for private data 
        /// </summary>
        protected string m_osSecret = String.Empty;

        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;
            
            // Random uuid for private data
            m_osSecret = UUID.Random().ToString();

            m_periodicDiagnosticsTimer.Elapsed += new ElapsedEventHandler(LogDiagnostics);
            m_periodicDiagnosticsTimer.Enabled = true;

            // This thread will go on to become the console listening thread
            Thread.CurrentThread.Name = "ConsoleThread";

            ILoggerRepository repository = LogManager.GetRepository();
            IAppender[] appenders = repository.GetAppenders();

            foreach (IAppender appender in appenders)
            {
                if (appender.Name == "LogFileAppender")
                {
                    m_logFileAppender = appender;
                }
            }
        }
        
        /// <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 about the server", 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);

                m_console.Commands.AddCommand("base", false, "threads abort",
                        "threads abort <thread-id>",
                        "Abort a managed thread.  Use \"show threads\" to find possible threads.", HandleThreadsAbort);

                m_console.Commands.AddCommand("base", false, "threads show",
                        "threads show",
                        "Show thread status.  Synonym for \"show threads\"",
                        (string module, string[] args) => Notice(GetThreadsReport()));
            }
        }
        
        /// <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()
        {
            // This should be a constant field.
            string reportFormat = "{0,6}   {1,35}   {2,16}   {3,13}   {4,10}   {5,30}";

            StringBuilder sb = new StringBuilder();
            Watchdog.ThreadWatchdogInfo[] threads = Watchdog.GetThreads();

            sb.Append(threads.Length + " threads are being tracked:" + Environment.NewLine);

            int timeNow = Util.EnvironmentTickCount();

            sb.AppendFormat(reportFormat, "ID", "NAME", "LAST UPDATE (MS)", "LIFETIME (MS)", "PRIORITY", "STATE");
            sb.Append(Environment.NewLine);

            foreach (Watchdog.ThreadWatchdogInfo twi in threads)
            {
                Thread t = twi.Thread;
                
                sb.AppendFormat(
                    reportFormat,
                    t.ManagedThreadId,
                    t.Name,
                    timeNow - twi.LastTick,
                    timeNow - twi.FirstTick,
                    t.Priority,
                    t.ThreadState);

                sb.Append(Environment.NewLine);
            }

            int workers = 0, ports = 0, maxWorkers = 0, maxPorts = 0;
            ThreadPool.GetAvailableThreads(out workers, out ports);
            ThreadPool.GetMaxThreads(out maxWorkers, out maxPorts);

            sb.Append(Environment.NewLine + "*** ThreadPool threads ***"  + Environment.NewLine);
            sb.Append("workers: " + (maxWorkers - workers) + " (" + maxWorkers + "); ports: " + (maxPorts - ports) + " (" + maxPorts + ")" + 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]: OpenSimulator version: " + m_version + Environment.NewLine);
            // clr version potentially is more confusing than helpful, since it doesn't tell us if we're running under Mono/MS .NET and
            // the clr version number doesn't match the project version number under Mono.
            //m_log.Info("[STARTUP]: Virtual machine runtime version: " + Environment.Version + Environment.NewLine);
            m_log.Info("[STARTUP]: Operating system version: " + Environment.OSVersion + Environment.NewLine);
            
            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...");
            RemovePIDFile();
            
            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;
            }
      
            if (cmd.Length > 3)
            {
                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":
                    ShowInfo();
                    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(GetVersionText());
                    break;
            }
        }

        public virtual void HandleThreadsAbort(string module, string[] cmd)
        {
            if (cmd.Length != 3)
            {
                MainConsole.Instance.Output("Usage: threads abort <thread-id>");
                return;
            }

            int threadId;
            if (!int.TryParse(cmd[2], out threadId))
            {
                MainConsole.Instance.Output("ERROR: Thread id must be an integer");
                return;
            }

            if (Watchdog.AbortThread(threadId))
                MainConsole.Instance.OutputFormat("Aborted thread with id {0}", threadId);
            else
                MainConsole.Instance.OutputFormat("ERROR - Thread with id {0} not found in managed threads", threadId);
        }
        
        protected void ShowInfo()
        {
            Notice(GetVersionText());
            Notice("Startup directory: " + m_startupDirectory);                
            if (null != m_consoleAppender)
                Notice(String.Format("Console log level: {0}", m_consoleAppender.Threshold));              
        }
        
        protected string GetVersionText()
        {
            return String.Format("Version: {0} (interface version {1})", m_version, VersionInfo.MajorInterfaceVersion);
        }

        /// <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>
        /// <param name="msg"></param>
        protected void Notice(string msg)
        {
            if (m_console != null)
            {
                m_console.Output(msg);
            }
        }
        
        /// <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>
        /// <param name="format"></param>        
        /// <param name="components"></param>
        protected void Notice(string format, params string[] components)
        {
            if (m_console != null)
                m_console.OutputFormat(format, components);
        }

        /// <summary>
        /// Enhance the version string with extra information if it's available.
        /// </summary>
        protected void EnhanceVersionInformation()
        {
            string buildVersion = string.Empty;

            // The subversion information is deprecated and will be removed at a later date
            // 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 gitDir = "../.git/";
            string gitRefPointerPath = gitDir + "HEAD";

            string svnRevisionFileName = "svn_revision";
            string svnFileName = ".svn/entries";
            string manualVersionFileName = ".version";
            string inputLine;
            int strcmp;

            if (File.Exists(manualVersionFileName))
            {
                using (StreamReader CommitFile = File.OpenText(manualVersionFileName))
                    buildVersion = CommitFile.ReadLine();

                m_version += buildVersion ?? "";
            }
            else if (File.Exists(gitRefPointerPath))
            {
//                m_log.DebugFormat("[OPENSIM]: Found {0}", gitRefPointerPath);

                string rawPointer = "";

                using (StreamReader pointerFile = File.OpenText(gitRefPointerPath))
                    rawPointer = pointerFile.ReadLine();

//                m_log.DebugFormat("[OPENSIM]: rawPointer [{0}]", rawPointer);

                Match m = Regex.Match(rawPointer, "^ref: (.+)$");

                if (m.Success)
                {
//                    m_log.DebugFormat("[OPENSIM]: Matched [{0}]", m.Groups[1].Value);

                    string gitRef = m.Groups[1].Value;
                    string gitRefPath = gitDir + gitRef;
                    if (File.Exists(gitRefPath))
                    {
//                        m_log.DebugFormat("[OPENSIM]: Found gitRefPath [{0}]", gitRefPath);

                        using (StreamReader refFile = File.OpenText(gitRefPath))
                        {
                            string gitHash = refFile.ReadLine();
                            m_version += gitHash.Substring(0, 7);
                        }
                    }
                }
            }
            else
            {
                // Remove the else logic when subversion mirror is no longer used
                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);
            }
        }
        
        protected void CreatePIDFile(string path)
        {
            try
            {
                string pidstring = System.Diagnostics.Process.GetCurrentProcess().Id.ToString();
                FileStream fs = File.Create(path);
                System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
                Byte[] buf = enc.GetBytes(pidstring);
                fs.Write(buf, 0, buf.Length);
                fs.Close();
                m_pidFile = path;
            }
            catch (Exception)
            {
            }
        }
        
        public string osSecret {
            // Secret uuid for the simulator
            get { return m_osSecret; }
            
        }

        public string StatReport(IOSHttpRequest httpRequest)
        {
            // If we catch a request for "callback", wrap the response in the value for jsonp
            if (httpRequest.Query.ContainsKey("callback"))
            {
                return httpRequest.Query["callback"].ToString() + "(" + m_stats.XReport((DateTime.Now - m_startuptime).ToString() , m_version) + ");";
            } 
            else 
            {
                return m_stats.XReport((DateTime.Now - m_startuptime).ToString() , m_version); 
            }
        }
           
        protected void RemovePIDFile()
        {
            if (m_pidFile != String.Empty)
            {
                try
                {
                    File.Delete(m_pidFile);
                    m_pidFile = String.Empty;
                }
                catch (Exception)
                {
                }
            }
        }
    }
}