aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Services/FSAssetService/FSAssetService.cs
blob: 27b04f7808f3dce1518e0cd4f449c1c83554d779 (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
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
/*
 * 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.Diagnostics;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Text;
using System.Threading;
using System.Reflection;
using OpenSim.Data;
using OpenSim.Framework;
using OpenSim.Framework.Serialization.External;
using OpenSim.Framework.Console;
using OpenSim.Server.Base;
using OpenSim.Services.Base;
using OpenSim.Services.Interfaces;
using Nini.Config;
using log4net;
using OpenMetaverse;
using System.Security.Cryptography;

namespace OpenSim.Services.FSAssetService
{
    public class FSAssetConnector : ServiceBase, IAssetService
    {
        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        static System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
        static SHA256CryptoServiceProvider SHA256 = new SHA256CryptoServiceProvider();

        static byte[] ToCString(string s)
        {
            byte[] ret = enc.GetBytes(s);
            Array.Resize(ref ret, ret.Length + 1);
            ret[ret.Length - 1] = 0;

            return ret;
        }

        protected IAssetLoader m_AssetLoader = null;
        protected IFSAssetDataPlugin m_DataConnector = null;
        protected IAssetService m_FallbackService;
        protected Thread m_WriterThread;
        protected Thread m_StatsThread;
        protected string m_SpoolDirectory;
        protected object m_readLock = new object();
        protected object m_statsLock = new object();
        protected int m_readCount = 0;
        protected int m_readTicks = 0;
        protected int m_missingAssets = 0;
        protected int m_missingAssetsFS = 0;
        protected string m_FSBase;
        protected bool m_useOsgridFormat = false;
        protected bool m_showStats = true;

        private static bool m_Initialized;
        private bool m_MainInstance;

        public FSAssetConnector(IConfigSource config)
            : this(config, "AssetService")
        {
        }

        public FSAssetConnector(IConfigSource config, string configName) : base(config)
        {
            if (!m_Initialized)
            {
                m_Initialized = true;
                m_MainInstance = true;

                MainConsole.Instance.Commands.AddCommand("fs", false,
                        "show assets", "show assets", "Show asset stats",
                        HandleShowAssets);
                MainConsole.Instance.Commands.AddCommand("fs", false,
                        "show digest", "show digest <ID>", "Show asset digest",
                        HandleShowDigest);
                MainConsole.Instance.Commands.AddCommand("fs", false,
                        "delete asset", "delete asset <ID>",
                        "Delete asset from database",
                        HandleDeleteAsset);
                MainConsole.Instance.Commands.AddCommand("fs", false,
                        "import", "import <conn> <table> [<start> <count>]",
                        "Import legacy assets",
                        HandleImportAssets);
                MainConsole.Instance.Commands.AddCommand("fs", false,
                        "force import", "force import <conn> <table> [<start> <count>]",
                        "Import legacy assets, overwriting current content",
                        HandleImportAssets);
            }

            IConfig assetConfig = config.Configs[configName];

            if (assetConfig == null)
                throw new Exception("No AssetService configuration");

            // Get Database Connector from Asset Config (If present)
            string dllName = assetConfig.GetString("StorageProvider", string.Empty);
            string connectionString = assetConfig.GetString("ConnectionString", string.Empty);
            string realm = assetConfig.GetString("Realm", "fsassets");

            int SkipAccessTimeDays = assetConfig.GetInt("DaysBetweenAccessTimeUpdates", 0);

            // If not found above, fallback to Database defaults
            IConfig dbConfig = config.Configs["DatabaseService"];

            if (dbConfig != null)
            {
                if (dllName == String.Empty)
                    dllName = dbConfig.GetString("StorageProvider", String.Empty);

                if (connectionString == String.Empty)
                    connectionString = dbConfig.GetString("ConnectionString", String.Empty);
            }

            // No databse connection found in either config
            if (dllName.Equals(String.Empty))
                throw new Exception("No StorageProvider configured");

            if (connectionString.Equals(String.Empty))
                throw new Exception("Missing database connection string");

            // Create Storage Provider
            m_DataConnector = LoadPlugin<IFSAssetDataPlugin>(dllName);

            if (m_DataConnector == null)
                throw new Exception(string.Format("Could not find a storage interface in the module {0}", dllName));

            // Initialize DB And perform any migrations required
            m_DataConnector.Initialise(connectionString, realm, SkipAccessTimeDays);

            // Setup Fallback Service
            string str = assetConfig.GetString("FallbackService", string.Empty);

            if (str != string.Empty)
            {
                object[] args = new object[] { config };
                m_FallbackService = LoadPlugin<IAssetService>(str, args);
                if (m_FallbackService != null)
                {
                    m_log.Info("[FSASSETS]: Fallback service loaded");
                }
                else
                {
                    m_log.Error("[FSASSETS]: Failed to load fallback service");
                }
            }

            // Setup directory structure including temp directory
            m_SpoolDirectory = assetConfig.GetString("SpoolDirectory", "/tmp");

            string spoolTmp = Path.Combine(m_SpoolDirectory, "spool");

            Directory.CreateDirectory(spoolTmp);

            m_FSBase = assetConfig.GetString("BaseDirectory", String.Empty);
            m_log.InfoFormat("[FSASSETS]: Assets base and spool directory are {0} and {1}", m_FSBase, m_SpoolDirectory);
            if (m_FSBase == String.Empty)
            {
                m_log.ErrorFormat("[FSASSETS]: BaseDirectory not specified");
                throw new Exception("Configuration error");
            }

	    // OSGrid format is /3/3/, OpenSims default format is /2/2/2/4/.  Try to figure out which we have.
	    List<string> dirs = new List<string>(Directory.EnumerateDirectories(m_FSBase));
	    foreach (var dir in dirs)
	    {
		if (3 == dir.Substring(dir.LastIndexOf(Path.DirectorySeparatorChar) + 1).Length)
		{
		    m_useOsgridFormat = true;
		    break;
		}
	    }
            m_useOsgridFormat = assetConfig.GetBoolean("UseOsgridFormat", m_useOsgridFormat);
            m_log.InfoFormat("[FSASSETS]: UseOsgridFormat is {0}", m_useOsgridFormat);

            // Default is to show stats to retain original behaviour
            m_showStats = assetConfig.GetBoolean("ShowConsoleStats", m_showStats);

            if (m_MainInstance)
            {
                string loader = assetConfig.GetString("DefaultAssetLoader", string.Empty);
                if (loader != string.Empty)
                {
                    m_AssetLoader = LoadPlugin<IAssetLoader>(loader);
                    string loaderArgs = assetConfig.GetString("AssetLoaderArgs", string.Empty);
                    m_log.InfoFormat("[FSASSETS]: Loading default asset set from {0}", loaderArgs);
                    m_AssetLoader.ForEachDefaultXmlAsset(loaderArgs,
                            delegate(AssetBase a)
                            {
                                Store(a, false);
                            });
                }

                m_WriterThread = new Thread(Writer);
                m_WriterThread.Start();

                if (m_showStats)
                {
                    m_StatsThread = new Thread(Stats);
                    m_StatsThread.Start();
                }
            }

            m_log.Info("[FSASSETS]: FS asset service enabled");
        }

        private void Stats()
        {
            while (true)
            {
                Thread.Sleep(60000);

                lock (m_statsLock)
                {
                    if (m_readCount > 0)
                    {
                        double avg = (double)m_readTicks / (double)m_readCount;
//                        if (avg > 10000)
//                            Environment.Exit(0);
////                        m_log.InfoFormat("[FSASSETS]: Read stats: {0} files, {1} ticks, avg {2:F2}, missing {3}, FS {4}", m_readCount, m_readTicks, (double)m_readTicks / (double)m_readCount, m_missingAssets, m_missingAssetsFS);
                    }
                    m_readCount = 0;
                    m_readTicks = 0;
                    m_missingAssets = 0;
                    m_missingAssetsFS = 0;
                }
            }
        }

        private void Writer()
        {
            m_log.Info("[ASSET]: Writer started");

            while (true)
            {
                string[] files = Directory.GetFiles(m_SpoolDirectory);

                if (files.Length > 0)
                {
                    int tickCount = Environment.TickCount;
                    for (int i = 0 ; i < files.Length ; i++)
                    {
                        string hash = Path.GetFileNameWithoutExtension(files[i]);
                        string s = HashToFile(hash);
                        string diskFile = Path.Combine(m_FSBase, s);
                        bool pathOk = false;

                        // The cure for chicken bones!
                        while(true)
                        {
                            try
                            {
                                // Try to make the directory we need for this file
                                Directory.CreateDirectory(Path.GetDirectoryName(diskFile));
                                pathOk = true;
                                break;
                            }
                            catch (System.IO.IOException)
                            {
                                // Creating the directory failed. This can't happen unless
                                // a part of the path already exists as a file. Sadly the
                                // SRAS data contains such files.
                                string d = Path.GetDirectoryName(diskFile);

                                // Test each path component in turn. If we can successfully
                                // make a directory, the level below must be the chicken bone.
                                while (d.Length > 0)
                                {
                                    Console.WriteLine(d);
                                    try
                                    {
                                        Directory.CreateDirectory(Path.GetDirectoryName(d));
                                    }
                                    catch (System.IO.IOException)
                                    {
                                        d = Path.GetDirectoryName(d);

                                        // We failed making the directory and need to
                                        // go up a bit more
                                        continue;
                                    }

                                    // We succeeded in making the directory and (d) is
                                    // the chicken bone
                                    break;
                                }

                                // Is the chicken alive?
                                if (d.Length > 0)
                                {
                                    Console.WriteLine(d);

                                    FileAttributes attr = File.GetAttributes(d);

                                    if ((attr & FileAttributes.Directory) == 0)
                                    {
                                        // The chicken bone should be resolved.
                                        // Return to writing the file.
                                        File.Delete(d);
                                        continue;
                                    }
                                }
                            }
                            // Could not resolve, skipping
                            m_log.ErrorFormat("[ASSET]: Could not resolve path creation error for {0}", diskFile);
                            break;
                        }

                        if (pathOk)
                        {
                            try
                            {
                                byte[] data = File.ReadAllBytes(files[i]);

                                using (GZipStream gz = new GZipStream(new FileStream(diskFile + ".gz", FileMode.Create), CompressionMode.Compress))
                                {
                                    gz.Write(data, 0, data.Length);
                                    gz.Close();
                                }
                                File.Delete(files[i]);

                                //File.Move(files[i], diskFile);
                            }
                            catch(System.IO.IOException e)
                            {
                                if (e.Message.StartsWith("Win32 IO returned ERROR_ALREADY_EXISTS"))
                                    File.Delete(files[i]);
                                else
                                    throw;
                            }
                        }
                    }

                    int totalTicks = System.Environment.TickCount - tickCount;
                    if (totalTicks > 0) // Wrap?
                    {
                        m_log.InfoFormat("[ASSET]: Write cycle complete, {0} files, {1} ticks, avg {2:F2}", files.Length, totalTicks, (double)totalTicks / (double)files.Length);
                    }
                }

                Thread.Sleep(1000);
            }
        }

        string GetSHA256Hash(byte[] data)
        {
            byte[] hash = SHA256.ComputeHash(data);

            return BitConverter.ToString(hash).Replace("-", String.Empty);
        }

        public string HashToPath(string hash)
        {
            if (hash == null || hash.Length < 10)
                return "junkyard";

            if (m_useOsgridFormat)
            {
                /*
                 * The code below is the OSGrid code.
                 */
                return Path.Combine(hash.Substring(0, 3),
                       Path.Combine(hash.Substring(3, 3)));
            }
            else
            {
                /*
                 * The below is what core would normally use.
                 * This is modified to work in OSGrid, as seen
                 * above, because the SRAS data is structured
                 * that way.
                 */
                return Path.Combine(hash.Substring(0, 2),
                       Path.Combine(hash.Substring(2, 2),
                       Path.Combine(hash.Substring(4, 2),
                       hash.Substring(6, 4))));
            }
        }

        private bool AssetExists(string hash)
        {
            string s = HashToFile(hash);
            string diskFile = Path.Combine(m_FSBase, s);

            if (File.Exists(diskFile + ".gz") || File.Exists(diskFile))
                return true;

            return false;
        }

        public virtual bool[] AssetsExist(string[] ids)
        {
            UUID[] uuid = Array.ConvertAll(ids, id => UUID.Parse(id));
            return m_DataConnector.AssetsExist(uuid);
        }

        public string HashToFile(string hash)
        {
            return Path.Combine(HashToPath(hash), hash);
        }

        public virtual AssetBase Get(string id)
        {
            string hash;

            return Get(id, out hash);
        }

        private AssetBase Get(string id, out string sha)
        {
            string hash = string.Empty;

            int startTime = System.Environment.TickCount;
            AssetMetadata metadata;

            lock (m_readLock)
            {
                metadata = m_DataConnector.Get(id, out hash);
            }

            sha = hash;

            if (metadata == null)
            {
                AssetBase asset = null;
                if (m_FallbackService != null)
                {
                    asset = m_FallbackService.Get(id);
                    if (asset != null)
                    {
                        asset.Metadata.ContentType =
                                SLUtil.SLAssetTypeToContentType((int)asset.Type);
                        sha = GetSHA256Hash(asset.Data);
                        m_log.InfoFormat("[FSASSETS]: Added asset {0} from fallback to local store", id);
                        Store(asset);
                    }
                }
                if (asset == null && m_showStats)
                {
                    // m_log.InfoFormat("[FSASSETS]: Asset {0} not found", id);
                    m_missingAssets++;
                }
                return asset;
            }
            AssetBase newAsset = new AssetBase();
            newAsset.Metadata = metadata;
            try
            {
                newAsset.Data = GetFsData(hash);
                if (newAsset.Data.Length == 0)
                {
                    AssetBase asset = null;
                    if (m_FallbackService != null)
                    {
                        asset = m_FallbackService.Get(id);
                        if (asset != null)
                        {
                            asset.Metadata.ContentType =
                                    SLUtil.SLAssetTypeToContentType((int)asset.Type);
                            sha = GetSHA256Hash(asset.Data);
                            m_log.InfoFormat("[FSASSETS]: Added asset {0} from fallback to local store", id);
                            Store(asset);
                        }
                    }
                    if (asset == null)
                    {
                        if (m_showStats)
                            m_missingAssetsFS++;
                        // m_log.InfoFormat("[FSASSETS]: Asset {0}, hash {1} not found in FS", id, hash);
                    }
                    else
                    {
                        // Deal with bug introduced in Oct. 20 (1eb3e6cc43e2a7b4053bc1185c7c88e22356c5e8)
                        // Fix bad assets before sending them elsewhere
                        if (asset.Type == (int)AssetType.Object && asset.Data != null)
                        {
                            string xml = ExternalRepresentationUtils.SanitizeXml(Utils.BytesToString(asset.Data));
                            asset.Data = Utils.StringToBytes(xml);
                        }
                        return asset;
                    }
                }

                if (m_showStats)
                {
                    lock (m_statsLock)
                    {
                        m_readTicks += Environment.TickCount - startTime;
                        m_readCount++;
                    }
                }

                // Deal with bug introduced in Oct. 20 (1eb3e6cc43e2a7b4053bc1185c7c88e22356c5e8)
                // Fix bad assets before sending them elsewhere
                if (newAsset.Type == (int)AssetType.Object && newAsset.Data != null)
                {
                    string xml = ExternalRepresentationUtils.SanitizeXml(Utils.BytesToString(newAsset.Data));
                    newAsset.Data = Utils.StringToBytes(xml);
                }

                return newAsset;
            }
            catch (Exception exception)
            {
                m_log.Error(exception.ToString());
                Thread.Sleep(5000);
                Environment.Exit(1);
                return null;
            }
        }

        public virtual AssetMetadata GetMetadata(string id)
        {
            string hash;
            return m_DataConnector.Get(id, out hash);
        }

        public virtual byte[] GetData(string id)
        {
            string hash;
            if (m_DataConnector.Get(id, out hash) == null)
                return null;

            return GetFsData(hash);
        }

        public bool Get(string id, Object sender, AssetRetrieved handler)
        {
            AssetBase asset = Get(id);

            handler(id, sender, asset);

            return true;
        }

        public byte[] GetFsData(string hash)
        {
            string spoolFile = Path.Combine(m_SpoolDirectory, hash + ".asset");

            if (File.Exists(spoolFile))
            {
                try
                {
                    byte[] content = File.ReadAllBytes(spoolFile);

                    return content;
                }
                catch
                {
                }
            }

            string file = HashToFile(hash);
            string diskFile = Path.Combine(m_FSBase, file);

            if (File.Exists(diskFile + ".gz"))
            {
                try
                {
                    using (GZipStream gz = new GZipStream(new FileStream(diskFile + ".gz", FileMode.Open, FileAccess.Read), CompressionMode.Decompress))
                    {
                        using (MemoryStream ms = new MemoryStream())
                        {
                            byte[] data = new byte[32768];
                            int bytesRead;

                            do
                            {
                                bytesRead = gz.Read(data, 0, 32768);
                                if (bytesRead > 0)
                                    ms.Write(data, 0, bytesRead);
                            } while (bytesRead > 0);

                            return ms.ToArray();
                        }
                    }
                }
                catch (Exception)
                {
                    return new Byte[0];
                }
            }
            else if (File.Exists(diskFile))
            {
                try
                {
                    byte[] content = File.ReadAllBytes(diskFile);

                    return content;
                }
                catch
                {
                }
            }
            return new Byte[0];

        }

        public virtual string Store(AssetBase asset)
        {
            return Store(asset, false);
        }

        private string Store(AssetBase asset, bool force)
        {
            int tickCount = Environment.TickCount;
            string hash = GetSHA256Hash(asset.Data);

            if (!AssetExists(hash))
            {
                string tempFile = Path.Combine(Path.Combine(m_SpoolDirectory, "spool"), hash + ".asset");
                string finalFile = Path.Combine(m_SpoolDirectory, hash + ".asset");

                if (!File.Exists(finalFile))
                {
                    // Deal with bug introduced in Oct. 20 (1eb3e6cc43e2a7b4053bc1185c7c88e22356c5e8)
                    // Fix bad assets before storing on this server
                    if (asset.Type == (int)AssetType.Object && asset.Data != null)
                    {
                        string xml = ExternalRepresentationUtils.SanitizeXml(Utils.BytesToString(asset.Data));
                        asset.Data = Utils.StringToBytes(xml);
                    }

                    FileStream fs = File.Create(tempFile);

                    fs.Write(asset.Data, 0, asset.Data.Length);

                    fs.Close();

                    File.Move(tempFile, finalFile);
                }
            }

            if (asset.ID == string.Empty)
            {
                if (asset.FullID == UUID.Zero)
                {
                    asset.FullID = UUID.Random();
                }
                asset.ID = asset.FullID.ToString();
            }
            else if (asset.FullID == UUID.Zero)
            {
                UUID uuid = UUID.Zero;
                if (UUID.TryParse(asset.ID, out uuid))
                {
                    asset.FullID = uuid;
                }
                else
                {
                    asset.FullID = UUID.Random();
                }
            }

            if (!m_DataConnector.Store(asset.Metadata, hash))
            {
                if (asset.Metadata.Type == -2)
                    return asset.ID;

                return UUID.Zero.ToString();
            }
            else
            {
                return asset.ID;
            }
        }

        public bool UpdateContent(string id, byte[] data)
        {
            return false;

//            string oldhash;
//            AssetMetadata meta = m_DataConnector.Get(id, out oldhash);
//
//            if (meta == null)
//                return false;
//
//            AssetBase asset = new AssetBase();
//            asset.Metadata = meta;
//            asset.Data = data;
//
//            Store(asset);
//
//            return true;
        }

        public virtual bool Delete(string id)
        {
            m_DataConnector.Delete(id);

            return true;
        }

        private void HandleShowAssets(string module, string[] args)
        {
            int num = m_DataConnector.Count();
            MainConsole.Instance.Output(string.Format("Total asset count: {0}", num));
        }

        private void HandleShowDigest(string module, string[] args)
        {
            if (args.Length < 3)
            {
                MainConsole.Instance.Output("Syntax: show digest <ID>");
                return;
            }

            string hash;
            AssetBase asset = Get(args[2], out hash);

            if (asset == null || asset.Data.Length == 0)
            {
                MainConsole.Instance.Output("Asset not found");
                return;
            }

            int i;

            MainConsole.Instance.Output(String.Format("Name: {0}", asset.Name));
            MainConsole.Instance.Output(String.Format("Description: {0}", asset.Description));
            MainConsole.Instance.Output(String.Format("Type: {0}", asset.Type));
            MainConsole.Instance.Output(String.Format("Content-type: {0}", asset.Metadata.ContentType));
            MainConsole.Instance.Output(String.Format("Flags: {0}", asset.Metadata.Flags.ToString()));
            MainConsole.Instance.Output(String.Format("FS file: {0}", HashToFile(hash)));

            for (i = 0 ; i < 5 ; i++)
            {
                int off = i * 16;
                if (asset.Data.Length <= off)
                    break;
                int len = 16;
                if (asset.Data.Length < off + len)
                    len = asset.Data.Length - off;

                byte[] line = new byte[len];
                Array.Copy(asset.Data, off, line, 0, len);

                string text = BitConverter.ToString(line);
                MainConsole.Instance.Output(String.Format("{0:x4}: {1}", off, text));
            }
        }

        private void HandleDeleteAsset(string module, string[] args)
        {
            if (args.Length < 3)
            {
                MainConsole.Instance.Output("Syntax: delete asset <ID>");
                return;
            }

            AssetBase asset = Get(args[2]);

            if (asset == null || asset.Data.Length == 0)
            {
                MainConsole.Instance.Output("Asset not found");
                return;
            }

            m_DataConnector.Delete(args[2]);

            MainConsole.Instance.Output("Asset deleted");
        }

        private void HandleImportAssets(string module, string[] args)
        {
            bool force = false;
            if (args[0] == "force")
            {
                force = true;
                List<string> list = new List<string>(args);
                list.RemoveAt(0);
                args = list.ToArray();
            }
            if (args.Length < 3)
            {
                MainConsole.Instance.Output("Syntax: import <conn> <table> [<start> <count>]");
            }
            else
            {
                string conn = args[1];
                string table = args[2];
                int start = 0;
                int count = -1;
                if (args.Length > 3)
                {
                    start = Convert.ToInt32(args[3]);
                }
                if (args.Length > 4)
                {
                    count = Convert.ToInt32(args[4]);
                }
                m_DataConnector.Import(conn, table, start, count, force, new FSStoreDelegate(Store));
            }
        }

        public AssetBase GetCached(string id)
        {
            return Get(id);
        }
    }
}