Raven.Storage.Esent.TransactionalStorageConfigurator.ConfigureInstance C# (CSharp) Method

		public InstanceParameters ConfigureInstance(JET_INSTANCE jetInstance, string path)
		{
			path = Path.GetFullPath(path);
			var logsPath = path;
			if (string.IsNullOrEmpty(configuration.Settings["Raven/Esent/LogsPath"]) == false)
			{
				logsPath = configuration.Settings["Raven/Esent/LogsPath"].ToFullPath();
			}
			var circularLog = GetValueFromConfiguration("Raven/Esent/CircularLog", true);
			var logFileSizeInMb = GetValueFromConfiguration("Raven/Esent/LogFileSize", 64);
			logFileSizeInMb = Math.Max(1, logFileSizeInMb / 4);
			var maxVerPages = GetValueFromConfiguration("Raven/Esent/MaxVerPages", 512);
			if (transactionalStorage != null)
			{
				transactionalStorage.MaxVerPagesValueInBytes = maxVerPages*1024*1024;
			}
			var maxVerPagesResult = TranslateToSizeInVersionPages(maxVerPages, 1024*1024);
			var instanceParameters = new InstanceParameters(jetInstance)
			{
				CircularLog = circularLog,
				Recovery = true,
				NoInformationEvent = false,
				CreatePathIfNotExist = true,
				EnableIndexChecking = true,
				TempDirectory = Path.Combine(logsPath, "temp"),
				SystemDirectory = Path.Combine(logsPath, "system"),
				LogFileDirectory = Path.Combine(logsPath, "logs"),
				MaxVerPages = maxVerPagesResult,
				PreferredVerPages = TranslateToSizeInVersionPages(GetValueFromConfiguration("Raven/Esent/PreferredVerPages", (int)(maxVerPagesResult * 0.85)), 1024 * 1024),
				BaseName = "RVN",
				EventSource = "Raven",
				LogBuffers = TranslateToSizeInDatabasePages(GetValueFromConfiguration("Raven/Esent/LogBuffers", 8192), 1024),
				LogFileSize = (logFileSizeInMb * 1024),
				MaxSessions = MaxSessions,
				MaxCursors = GetValueFromConfiguration("Raven/Esent/MaxCursors", 2048),
				DbExtensionSize = TranslateToSizeInDatabasePages(GetValueFromConfiguration("Raven/Esent/DbExtensionSize", 8), 1024 * 1024),
				AlternateDatabaseRecoveryDirectory = path
			};

			if (Environment.OSVersion.Version >= new Version(5, 2))
			{
				// JET_paramEnableIndexCleanup is not supported on WindowsXP
				const int JET_paramEnableIndexCleanup = 54;
				Api.JetSetSystemParameter(jetInstance, JET_SESID.Nil, (JET_param) JET_paramEnableIndexCleanup, 1, null);
			}

			return instanceParameters;
		}

 public EsentExportOperation(string dataDirPath)
 {
     var dbFullPath = Path.Combine(dataDirPath, "Data");            
     try
     {
         Api.JetCreateInstance(out instance, "instance");
         var ravenConfiguration = new RavenConfiguration();
         ravenConfiguration.DataDirectory = dataDirPath;
         ravenConfiguration.Storage.PreventSchemaUpdate = true;
         ITransactionalStorage storage;
         var success = StorageExporter.TryToCreateTransactionalStorage(ravenConfiguration, out storage);
         if (!success) ConsoleUtils.PrintErrorAndFail("Failed to create transactional storage");
         var configurator = new TransactionalStorageConfigurator(ravenConfiguration, (TransactionalStorage)storage);
         configurator.ConfigureInstance(instance, dataDirPath);
         storage.Dispose();
         Api.JetInit(ref instance);
         Api.JetBeginSession(instance, out sesid, null, null);           
         Api.JetAttachDatabase(sesid, dbFullPath, AttachDatabaseGrbit.None);
         Api.JetOpenDatabase(sesid, dbFullPath, null, out dbid, OpenDatabaseGrbit.None);
     }
     catch (Exception e)
     {
         ConsoleUtils.PrintErrorAndFail(e.Message, e.StackTrace);
     }
 }