コード例 #1
0
ファイル: Program.cs プロジェクト: miroslavpokorny/BTDB
        static void Main(string[] args)
        {
            if (args.Length < 1)
            {
                Console.WriteLine("Need to have just one parameter with directory of ObjectDB");
                Console.WriteLine(
                    "Optional second parameter: nicedump, comparedump, diskdump, dump, dumpnull, stat, fileheaders, compact, export, import, leaks, leakscode, size, frequency, interactive, check");
                return;
            }

            var action = "nicedump";

            if (args.Length > 1)
            {
                action = args[1].ToLowerInvariant();
            }

            switch (action)
            {
            case "realpath":
            {
                var res = PlatformMethods.Instance.RealPath(args[0]);
                if (res == null)
                {
                    Console.WriteLine("Error resolving real path for " + args[0]);
                }
                else
                {
                    Console.WriteLine(res);
                }
                break;
            }

            case "nicedump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                Console.WriteLine("CommitUlong: " + tr.GetCommitUlong());
                Console.WriteLine("Ulong[0] oid: " + trkv.GetUlong(0));
                Console.WriteLine("Ulong[1] dictid: " + trkv.GetUlong(1));
                var visitor  = new ToConsoleVisitorNice();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();

                break;
            }

            case "interactive":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                Console.WriteLine("CommitUlong: " + tr.GetCommitUlong());
                Console.WriteLine("Ulong[0] oid: " + trkv.GetUlong(0));
                Console.WriteLine("Ulong[1] dictid: " + trkv.GetUlong(1));
                var visitor  = new ToConsoleVisitorNice();
                var iterator = new ODBIterator(tr, visitor);
                iterator.LoadGlobalInfo(true);
                Interactive(iterator, visitor);

                break;
            }

            case "comparedump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                var visitor  = new ToConsoleVisitorForComparison();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate(sortTableByNameAsc: true);

                break;
            }

            case "comparesplitdump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                var visitor  = new ToFilesVisitorForComparison(HashType.Crc32);
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate(sortTableByNameAsc: true);

                break;
            }

            case "diskdump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                using var tst = File.CreateText(Path.Combine(args[0], "dump.txt"));
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                tst.WriteLine("CommitUlong: " + tr.GetCommitUlong());
                tst.WriteLine("Ulong[0] oid: " + trkv.GetUlong(0));
                tst.WriteLine("Ulong[1] dictid: " + trkv.GetUlong(1));
                var visitor  = new ToFileVisitorNice(tst);
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();

                break;
            }

            case "dump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                Console.WriteLine("CommitUlong: " + tr.GetCommitUlong());
                Console.WriteLine("Ulong[0] oid: " + trkv.GetUlong(0));
                Console.WriteLine("Ulong[1] dictid: " + trkv.GetUlong(1));
                var visitor  = new ToConsoleVisitor();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();

                break;
            }

            case "dumpnull":
            case "null":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var tr = odb.StartTransaction();
                var visitor  = new ToNullVisitor();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();

                break;
            }

            case "check":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var transaction = kdb.StartReadOnlyTransaction();
                var keyValueCount = transaction.GetKeyValueCount();
                transaction.FindFirstKey();
                for (long kv = 0; kv < keyValueCount; kv++)
                {
                    transaction.GetKey();
                    transaction.GetValue();
                    transaction.FindNextKey();
                }

                break;
            }

            case "stat":
            {
                var sw = new Stopwatch();
                sw.Start();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new BTreeKeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                sw.Stop();
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                Console.WriteLine(kdb.CalcStats());

                break;
            }

            case "statm":     // Stat but by old managed implementation
            {
                var sw = new Stopwatch();
                sw.Start();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                sw.Stop();
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                Console.WriteLine(kdb.CalcStats());

                break;
            }

            case "kvi":
            {
                var sw = Stopwatch.StartNew();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new BTreeKeyValueDB(dfc, new SnappyCompressionStrategy(), 100 * 1024 * 1024, null);
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                sw.Restart();
                kdb.CreateKvi(CancellationToken.None);
                Console.WriteLine(
                    $"Created kvi in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");

                break;
            }

            case "kvim":     // Kvi but by old managed implementation
            {
                var sw = Stopwatch.StartNew();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(dfc, new SnappyCompressionStrategy(), 100 * 1024 * 1024, null);
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                sw.Restart();
                kdb.CreateKvi(CancellationToken.None);
                Console.WriteLine(
                    $"Created kvi in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");

                break;
            }

            case "fileheaders":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                var fcfi = new FileCollectionWithFileInfos(dfc);
                foreach (var fi in fcfi.FileInfos)
                {
                    var details = "";
                    switch (fi.Value)
                    {
                    case IKeyIndex keyIndex:
                    {
                        details =
                            $"KVCount:{keyIndex.KeyValueCount} CommitUlong:{keyIndex.CommitUlong} TrLogFileId:{keyIndex.TrLogFileId} TrLogOffset:{keyIndex.TrLogOffset}";
                        var usedFiles = keyIndex.UsedFilesInOlderGenerations;
                        if (usedFiles != null)
                        {
                            details += " UsedFiles:" + string.Join(",", usedFiles);
                        }

                        break;
                    }

                    case IFileTransactionLog trlog:
                        details = $"Previous File Id: {trlog.PreviousFileId}";
                        break;
                    }

                    Console.WriteLine("File {0} Guid:{3} Gen:{2} Type:{1} {4}", fi.Key,
                                      fi.Value.FileType.ToString(), fi.Value.Generation, fi.Value.Guid, details);
                }

                break;
            }

            case "compact":
            {
                var sw = new Stopwatch();
                sw.Start();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(dfc, new SnappyCompressionStrategy(), 100 * 1024 * 1024, null);
                kdb.Logger    = new ConsoleKvdbLogger();
                sw.Stop();
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                sw.Restart();
                while (kdb.Compact(new CancellationToken()))
                {
                    sw.Stop();
                    Console.WriteLine($"Compaction iteration in {sw.Elapsed.TotalSeconds:F1}");
                    sw.Restart();
                }

                sw.Stop();
                Console.WriteLine(
                    $"Final compaction in {sw.Elapsed.TotalSeconds:F1} Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                Console.WriteLine(kdb.CalcStats());

                break;
            }

            case "export":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var tr = kdb.StartReadOnlyTransaction();
                using var st = File.Create(Path.Combine(args[0], "snapshot.dat"));
                KeyValueDBExportImporter.Export(tr, st);

                break;
            }

            case "import":
            {
                using var st  = File.OpenRead(Path.Combine(args[0], "snapshot.dat"));
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(dfc);
                using var tr  = kdb.StartTransaction();
                KeyValueDBExportImporter.Import(tr, st);
                tr.Commit();

                break;
            }

            case "leaks":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                Console.WriteLine("Leaks: ");
                odb.Open(kdb, false);
                odb.DumpLeaks();

                break;
            }

            case "leakscode":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                odb.DumpLeaksCode();

                break;
            }

            case "frequency":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var tr = odb.StartTransaction();
                var visitor  = new ToConsoleFrequencyVisitor();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();
                visitor.OutputStatistic();
            }
            break;

            case "size":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var tr = odb.StartTransaction();
                var visitor  = new ToConsoleSizeVisitor();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();
            }
            break;

            default:
            {
                Console.WriteLine($"Unknown action: {action}");
                break;
            }
            }
        }
コード例 #2
0
        static void Main(string[] args)
        {
            if (args.Length < 1)
            {
                Console.WriteLine("Need to have just one parameter with directory of ObjectDB");
                Console.WriteLine(
                    "Optional second parameter: nicedump, comparedump, diskdump, dump, dumpnull, stat, fileheaders, compact, export, import, leaks, leakscode, size, frequency, interactive, check, findsplitbrain, fulldiskdump, trldump");
                return;
            }

            var action = "nicedump";

            if (args.Length > 1)
            {
                action = args[1].ToLowerInvariant();
            }

            switch (action)
            {
            case "realpath":
            {
                var res = PlatformMethods.Instance.RealPath(args[0]);
                if (res == null)
                {
                    Console.WriteLine("Error resolving real path for " + args[0]);
                }
                else
                {
                    Console.WriteLine(res);
                }
                break;
            }

            case "nicedump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                Console.WriteLine("CommitUlong: " + tr.GetCommitUlong());
                Console.WriteLine("Ulong[0] oid: " + trkv.GetUlong(0));
                Console.WriteLine("Ulong[1] dictid: " + trkv.GetUlong(1));
                var visitor  = new ToConsoleVisitorNice();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();

                break;
            }

            case "interactive":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                Console.WriteLine("CommitUlong: " + tr.GetCommitUlong());
                Console.WriteLine("Ulong[0] oid: " + trkv.GetUlong(0));
                Console.WriteLine("Ulong[1] dictid: " + trkv.GetUlong(1));
                var visitor  = new ToConsoleVisitorNice();
                var iterator = new ODBIterator(tr, visitor);
                iterator.LoadGlobalInfo(true);
                Interactive(iterator, visitor);

                break;
            }

            case "comparedump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                var visitor  = new ToConsoleVisitorForComparison();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate(sortTableByNameAsc: true);

                break;
            }

            case "comparesplitdump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv    = kdb.StartReadOnlyTransaction();
                using var tr      = odb.StartTransaction();
                using var visitor = new ToFilesVisitorForComparison(HashType.Crc32);
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate(sortTableByNameAsc: true);

                break;
            }

            case "fulldiskdump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv    = kdb.StartReadOnlyTransaction();
                using var tr      = odb.StartTransaction();
                using var visitor = new ToFilesVisitorWithSecondaryKeys();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate(sortTableByNameAsc: true);

                break;
            }

            case "diskdump":
            {
                var dbDir = args[0];
                var openUpToCommitUlong = args.Length >= 3 ? (ulong?)ulong.Parse(args[2]) : null;
                var fileName            = Path.Combine(dbDir, "dump.txt");

                DiskDump(dbDir, fileName, openUpToCommitUlong);
                break;
            }

            case "dump":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var trkv = kdb.StartReadOnlyTransaction();
                using var tr   = odb.StartTransaction();
                Console.WriteLine("CommitUlong: " + tr.GetCommitUlong());
                Console.WriteLine("Ulong[0] oid: " + trkv.GetUlong(0));
                Console.WriteLine("Ulong[1] dictid: " + trkv.GetUlong(1));
                var visitor  = new ToConsoleVisitor();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();

                break;
            }

            case "dumpnull":
            case "null":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var tr = odb.StartTransaction();
                var visitor  = new ToNullVisitor();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();

                break;
            }

            case "check":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var transaction = kdb.StartReadOnlyTransaction();
                var keyValueCount = transaction.GetKeyValueCount();
                transaction.FindFirstKey(ReadOnlySpan <byte> .Empty);
                for (long kv = 0; kv < keyValueCount; kv++)
                {
                    transaction.GetKey();
                    transaction.GetValue();
                    transaction.FindNextKey(ReadOnlySpan <byte> .Empty);
                }

                break;
            }

            case "stat":
            {
                var sw = new Stopwatch();
                sw.Start();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                sw.Stop();
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                Console.WriteLine(kdb.CalcStats());

                break;
            }

            case "statm":     // Stat but by old managed implementation
            {
                var sw = new Stopwatch();
                sw.Start();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                sw.Stop();
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                Console.WriteLine(kdb.CalcStats());

                break;
            }

            case "kvi":
            {
                var sw = Stopwatch.StartNew();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new BTreeKeyValueDB(dfc, new SnappyCompressionStrategy(), 100 * 1024 * 1024, null);
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                sw.Restart();
                kdb.CreateKvi(CancellationToken.None);
                Console.WriteLine(
                    $"Created kvi in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");

                break;
            }

            case "kvim":     // Kvi but by old managed implementation
            {
                var sw = Stopwatch.StartNew();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(dfc, new SnappyCompressionStrategy(), 100 * 1024 * 1024, null);
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                sw.Restart();
                kdb.CreateKvi(CancellationToken.None);
                Console.WriteLine(
                    $"Created kvi in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");

                break;
            }

            case "fileheaders":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                var fcfi = new FileCollectionWithFileInfos(dfc);
                foreach (var fi in fcfi.FileInfos)
                {
                    var details = "";
                    switch (fi.Value)
                    {
                    case IKeyIndex keyIndex:
                    {
                        details =
                            $"KVCount:{keyIndex.KeyValueCount} CommitUlong:{keyIndex.CommitUlong} TrLogFileId:{keyIndex.TrLogFileId} TrLogOffset:{keyIndex.TrLogOffset}\n";
                        details += LoadUsedFilesFromKvi(keyIndex, fcfi, fi.Key);
                        break;
                    }

                    case IFileTransactionLog trlog:
                        details = $"Previous File Id: {trlog.PreviousFileId}";
                        break;
                    }

                    Console.WriteLine("File {0} Guid:{3} Gen:{2} Type:{1} {4}", fi.Key,
                                      fi.Value.FileType.ToString(), fi.Value.Generation, fi.Value.Guid, details);
                }

                break;
            }

            case "compact":
            {
                var sw = new Stopwatch();
                sw.Start();
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(dfc, new SnappyCompressionStrategy(), 100 * 1024 * 1024, null);
                kdb.Logger    = new ConsoleKvdbLogger();
                sw.Stop();
                Console.WriteLine(
                    $"Opened in {sw.Elapsed.TotalSeconds:F1}s Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                sw.Restart();
                while (kdb.Compact(new CancellationToken()))
                {
                    sw.Stop();
                    Console.WriteLine($"Compaction iteration in {sw.Elapsed.TotalSeconds:F1}");
                    sw.Restart();
                }

                sw.Stop();
                Console.WriteLine(
                    $"Final compaction in {sw.Elapsed.TotalSeconds:F1} Using {Process.GetCurrentProcess().WorkingSet64 / 1024 / 1024}MB RAM");
                Console.WriteLine(kdb.CalcStats());

                break;
            }

            case "export":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var tr = kdb.StartReadOnlyTransaction();
                using var st = File.Create(Path.Combine(args[0], "snapshot.dat"));
                KeyValueDBExportImporter.Export(tr, st);

                break;
            }

            case "import":
            {
                using var st  = File.OpenRead(Path.Combine(args[0], "snapshot.dat"));
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(dfc);
                using var tr  = kdb.StartTransaction();
                KeyValueDBExportImporter.Import(tr, st);
                tr.Commit();

                break;
            }

            case "leaks":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                Console.WriteLine("Leaks: ");
                odb.Open(kdb, false);
                odb.DumpLeaks();

                break;
            }

            case "leakscode":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                odb.DumpLeaksCode();

                break;
            }

            case "frequency":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var tr = odb.StartTransaction();
                var visitor  = new ToConsoleFrequencyVisitor();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();
                visitor.OutputStatistic();
            }
            break;

            case "size":
            {
                using var dfc = new OnDiskFileCollection(args[0]);
                using var kdb = new KeyValueDB(new KeyValueDBOptions
                    {
                        FileCollection      = dfc,
                        ReadOnly            = true,
                        Compression         = new SnappyCompressionStrategy(),
                        OpenUpToCommitUlong = args.Length >= 3 ? (ulong?) ulong.Parse(args[2]) : null
                    });
                using var odb = new ObjectDB();
                odb.Open(kdb, false);
                using var tr = odb.StartTransaction();
                var visitor  = new ToConsoleSizeVisitor();
                var iterator = new ODBIterator(tr, visitor);
                iterator.Iterate();
            }
            break;

            case "findsplitbrain":
            {
                if (args.Length != 6)
                {
                    Console.WriteLine(
                        "usage: ODBDump Eagle_0 findsplitbrain Eagle_1 1000 100000 INestedEventTable");
                    return;
                }

                var startEvent   = ulong.Parse(args[3]);
                var endEvent     = ulong.Parse(args[4]);
                var relationName = args[5];

                var(found, lastGood, firstBad) =
                    FindSplitBrain(args[0], args[2], relationName, startEvent, endEvent);
                if (found)
                {
                    Console.WriteLine($"Split occured between {lastGood} and {firstBad}");
                    DiskDump(args[0], $"dump_{lastGood}_0.txt", lastGood);
                    DiskDump(args[2], $"dump_{lastGood}_1.txt", lastGood);
                    DiskDump(args[0], $"dump_{firstBad}_0.txt", firstBad);
                    DiskDump(args[2], $"dump_{firstBad}_1.txt", firstBad);
                }
            }
            break;

            case "trldump":
            {
                ITrlVisitor visitor = new ConsoleTrlVisitor();
                using var dfc = new OnDiskFileCollection(args[0]);
                foreach (var file in dfc.Enumerate())
                {
                    try
                    {
                        visitor.StartFile(file.Index, file.GetSize());
                        var reader = new TrlFileReader(file);
                        reader.Iterate(visitor);
                    }
                    catch (Exception e)
                    {
                        visitor.OperationDetail("Failure " + e.Message);
                    }

                    visitor.EndOperation();
                }
            }
            break;

            default:
            {
                Console.WriteLine($"Unknown action: {action}");
                break;
            }
            }
        }