Ejemplo n.º 1
0
        /// <summary>
        /// Set parameters and initialize the instance.
        /// </summary>
        /// <param name="database">The database that will be used by the instance.</param>
        /// <param name="instance">The instance to initialize.</param>
        private static void SetParametersAndInitializeInstance(string database, Instance instance)
        {
            SetDefaultInstanceParameters(instance);
            SetPathParameters(instance, database);

            InitGrbit grbit = EsentVersion.SupportsWindows7Features
                                  ? Windows7Grbits.ReplayIgnoreLostLogs
                                  : InitGrbit.None;

            instance.Init(grbit);
        }
Ejemplo n.º 2
0
        /// <summary>
        /// Initialize the JET_INSTANCE.
        /// </summary>
        /// <param name="grbit">
        /// Initialization options.
        /// </param>
        public void Init(InitGrbit grbit)
        {
            this.CheckObjectIsNotDisposed();
            JET_INSTANCE instance = this.JetInstance;

            // Use a constrained region so that the handle is
            // always set after JetInit2 is called.
            RuntimeHelpers.PrepareConstrainedRegions();
            try
            {
                // Remember that a failure in JetInit can zero the handle
                // and that JetTerm should not be called in that case.
                Api.JetInit2(ref instance, grbit);
            }
            finally
            {
                this.SetHandle(instance.Value);
            }
        }
Ejemplo n.º 3
0
        private void InitInstance()
        {
            string directory = Path.GetDirectoryName(m_DatabaseFileName);

            Instance = new Instance(Guid.NewGuid().ToString());
            Instance.Parameters.TempDirectory    = Path.Combine(directory, "temp");
            Instance.Parameters.SystemDirectory  = Path.Combine(directory, "system");
            Instance.Parameters.LogFileDirectory = Path.Combine(directory, "logs");
            Instance.Parameters.AlternateDatabaseRecoveryDirectory = directory;
            Instance.Parameters.CreatePathIfNotExist = true;
            Instance.Parameters.EnableIndexChecking  = false;
            Instance.Parameters.CircularLog          = true;
            Instance.Parameters.CheckpointDepthMax   = 64 * 1024 * 1024;
            Instance.Parameters.LogFileSize          = 1024;   // 1MB logs
            Instance.Parameters.LogBuffers           = 1024;   // buffers = 1/2 of logfile
            Instance.Parameters.MaxTemporaryTables   = 0;
            Instance.Parameters.MaxVerPages          = 1024;
            Instance.Parameters.NoInformationEvent   = true;
            Instance.Parameters.WaypointLatency      = 1;
            Instance.Parameters.MaxSessions          = 256;
            Instance.Parameters.MaxOpenTables        = 256;
            Instance.Parameters.EventSource          = "NCrawler";

            InitGrbit grbit = EsentVersion.SupportsWindows7Features
                                ? Windows7Grbits.ReplayIgnoreLostLogs
                                : InitGrbit.None;

            try
            {
                Instance.Init(grbit);
            }
            catch
            {
                Directory.Delete(directory, true);
                throw;
            }
        }
Ejemplo n.º 4
0
        /// <summary>
        /// Initialize the JET_INSTANCE.
        /// </summary>
        /// <param name="grbit">
        /// Initialization options.
        /// </param>
        public void Init(InitGrbit grbit)
        {
            this.CheckObjectIsNotDisposed();
            JET_INSTANCE instance = this.JetInstance;

            // Use a constrained region so that the handle is
            // always set after JetInit2 is called.
            RuntimeHelpers.PrepareConstrainedRegions();
            try
            {
                // Remember that a failure in JetInit can zero the handle
                // and that JetTerm should not be called in that case.
                Api.JetInit2(ref instance, grbit);
            }
            finally
            {
                this.SetHandle(instance.Value);
            }
        }
Ejemplo n.º 5
0
        /// <summary>
        /// Initializes a new instance of the PersistentDictionary class.
        /// </summary>
        /// <param name="directory">
        /// The directory to create the database in.
        /// </param>
        public PersistentDictionary(string directory)
        {
            if (null == directory)
            {
                throw new ArgumentNullException("directory");
            }

            Globals.Init();
            this.converters        = new PersistentDictionaryConverters <TKey, TValue>();
            this.config            = new PersistentDictionaryConfig();
            this.databaseDirectory = directory;
            this.databasePath      = Path.Combine(directory, this.config.Database);

            this.updateLocks = new object[NumUpdateLocks];
            for (int i = 0; i < this.updateLocks.Length; ++i)
            {
                this.updateLocks[i] = new object();
            }

            this.instance = new Instance(Guid.NewGuid().ToString());
            this.instance.Parameters.SystemDirectory  = directory;
            this.instance.Parameters.LogFileDirectory = directory;
            this.instance.Parameters.TempDirectory    = directory;

            // If the database has been moved while inconsistent recovery
            // won't be able to find the database (logfiles contain the
            // absolute path of the referenced database). Set this parameter
            // to indicate a directory which contains any databases that couldn't
            // be found by recovery.
            this.instance.Parameters.AlternateDatabaseRecoveryDirectory = directory;

            this.instance.Parameters.CreatePathIfNotExist = true;
            this.instance.Parameters.BaseName             = this.config.BaseName;
            this.instance.Parameters.EnableIndexChecking  = false;      // TODO: fix unicode indexes
            this.instance.Parameters.CircularLog          = true;
            this.instance.Parameters.CheckpointDepthMax   = 64 * 1024 * 1024;
            this.instance.Parameters.LogFileSize          = 1024; // 1MB logs
            this.instance.Parameters.LogBuffers           = 1024; // buffers = 1/2 of logfile
            this.instance.Parameters.MaxTemporaryTables   = 0;
            this.instance.Parameters.MaxVerPages          = 1024;
            this.instance.Parameters.NoInformationEvent   = true;
            this.instance.Parameters.WaypointLatency      = 1;
            this.instance.Parameters.MaxSessions          = 256;
            this.instance.Parameters.MaxOpenTables        = 256;

            InitGrbit grbit = EsentVersion.SupportsWindows7Features
                                  ? Windows7Grbits.ReplayIgnoreLostLogs
                                  : InitGrbit.None;

            this.instance.Init(grbit);

            try
            {
                if (!File.Exists(this.databasePath))
                {
                    this.CreateDatabase(this.databasePath);
                }
                else
                {
                    this.CheckDatabaseMetaData(this.databasePath);
                }

                this.cursors = new PersistentDictionaryCursorCache <TKey, TValue>(
                    this.instance, this.databasePath, this.converters, this.config);
            }
            catch (Exception)
            {
                // We have failed to initialize for some reason. Terminate
                // the instance.
                this.instance.Term();
                throw;
            }
        }
Ejemplo n.º 6
0
 /// <summary>
 /// Initialize the ESENT database engine.
 /// </summary>
 /// <param name="instance">
 /// The instance to initialize. If an instance hasn't been
 /// allocated then a new one is created and the engine
 /// will operate in single-instance mode.
 /// </param>
 /// <param name="recoveryOptions">
 /// Additional recovery parameters for remapping databases during
 /// recovery, position where to stop recovery at, or recovery status.
 /// </param>
 /// <param name="grbit">
 /// Initialization options.
 /// </param>
 /// <returns>
 /// A warning code.
 /// </returns>
 public static JET_wrn JetInit3(ref JET_INSTANCE instance, JET_RSTINFO recoveryOptions, InitGrbit grbit)
 {
     return(Api.Check(Api.Impl.JetInit3(ref instance, recoveryOptions, grbit)));
 }
Ejemplo n.º 7
0
 /// <summary>
 /// Initialize the ESENT database engine.
 /// </summary>
 /// <param name="instance">
 /// The instance to initialize. If an instance hasn't been
 /// allocated then a new one is created and the engine
 /// will operate in single-instance mode.
 /// </param>
 /// <param name="grbit">
 /// Initialization options.
 /// </param>
 /// <returns>
 /// A warning code.
 /// </returns>
 public static JET_wrn JetInit2(ref JET_INSTANCE instance, InitGrbit grbit)
 {
     return Api.Check(Impl.JetInit2(ref instance, grbit));
 }
Ejemplo n.º 8
0
 /// <summary>
 /// Initialize the ESENT database engine.
 /// </summary>
 /// <param name="instance">
 /// The instance to initialize. If an instance hasn't been
 /// allocated then a new one is created and the engine
 /// will operate in single-instance mode.
 /// </param>
 /// <param name="recoveryOptions">
 /// Additional recovery parameters for remapping databases during
 /// recovery, position where to stop recovery at, or recovery status.
 /// </param>
 /// <param name="grbit">
 /// Initialization options.
 /// </param>
 /// <returns>
 /// A warning code.
 /// </returns>
 public static JET_wrn JetInit3(ref JET_INSTANCE instance, JET_RSTINFO recoveryOptions, InitGrbit grbit)
 {
     return Api.Check(Api.Impl.JetInit3(ref instance, recoveryOptions, grbit));            
 }
Ejemplo n.º 9
0
        public void Open(string connectionString)
        {
            if (_EseInstance == null)
            {
                if (string.IsNullOrWhiteSpace(connectionString))
                {
                    connectionString = ApplicationFolderHelper.ApplicationFolderName;
                }

                this._DatabasePath = Path.Combine(connectionString, Path.ChangeExtension(_DatabaseName, _StorageEngineBaseName));

                _EseInstance = new Instance(_DatabaseName);
                _EseInstance.Parameters.CreatePathIfNotExist = true;
                _EseInstance.Parameters.CircularLog          = true;
                _EseInstance.Parameters.Recovery             = true;
                _EseInstance.Parameters.BaseName             = _StorageEngineBaseName;
                _EseInstance.Parameters.MaxSessions          = _ConnectionPoolSize * 2;
                _EseInstance.Parameters.NoInformationEvent   = true;

                if (!string.IsNullOrEmpty(connectionString))
                {
                    _EseInstance.Parameters.SystemDirectory  = connectionString;
                    _EseInstance.Parameters.LogFileDirectory = connectionString;
                    _EseInstance.Parameters.TempDirectory    = connectionString;
                    _EseInstance.Parameters.AlternateDatabaseRecoveryDirectory = connectionString;
                }

                InitGrbit grbit = default(InitGrbit);
                if (EsentVersion.SupportsWindows7Features)
                {
                    grbit = Windows7Grbits.ReplayIgnoreLostLogs;
                }
                else
                {
                    grbit = InitGrbit.None;
                }

                _EseInstance.Init(grbit);
                _ConnectionPool = new EseConnectionPool(_EseInstance, _DatabasePath, _ConnectionPoolSize);

                EseConnection connection = _ConnectionPool.OpenConnection();

                try
                {
                    using (connection.GetTable(_TableNameCallbacks, OpenTableGrbit.ReadOnly))
                    {
                    }
                }
                catch (EsentErrorException eeex)
                {
                    if (eeex.Error == JET_err.ObjectNotFound)
                    {
                        CreateTaskTable(connection);
                    }
                    else
                    {
                        throw;
                    }
                }
                finally
                {
                    _ConnectionPool.CloseConnection(connection);
                }
            }
        }
Ejemplo n.º 10
0
        // todo:
        // Instead of "TConfig" and abstract methods
        // perhaps a set of "readonly Action<T> or Funct<T, V>" would be better
        // these can be set at the top of the inheriting class tree and would
        // be passed in as variables?



        public ManagedTable(TConfig config,
                            Func <Instance, TConfig, TCursor> OpenCursor)
        {
            // To ensure all references are valid
            _config = config;

            // Prepare locks
            _updateLocks = new object[NumUpdateLocks];
            for (int i = 0; i < _updateLocks.Length; ++i)
            {
                _updateLocks[i] = new object();
            }

            // Get the configuration
            var defaultConfig  = ManagedTableDefaultConfig.GetDefaultDatabaseConfig();
            var databaseConfig = new DatabaseConfig();

            var databaseDirectory = Environment.CurrentDirectory;

            databaseConfig.SystemPath  = databaseDirectory;
            databaseConfig.LogFilePath = databaseDirectory;
            databaseConfig.TempPath    = databaseDirectory;

            // Apply configuration
            databaseConfig.Merge(defaultConfig);
            databaseConfig.Merge(_config.GetDefaultDatabaseConfig(), MergeRules.Overwrite);
            databaseConfig.SetGlobalParams();

            // Get the database instance
            _instance = new Instance(
                databaseConfig.Identifier,
                databaseConfig.DisplayName,
                databaseConfig.DatabaseStopFlags
                );

            // Apply instance level config
            databaseConfig.SetInstanceParams(_instance.JetInstance);

            // Todo: look for fastest recovery flags
            InitGrbit grbit = databaseConfig.DatabaseRecoveryFlags | (EsentVersion.SupportsWindows7Features ? Windows7Grbits.ReplayIgnoreLostLogs : InitGrbit.None);

            _instance.Init(grbit);

            // Recalculate path
            var databasePath = Path.Combine(databaseDirectory, databaseConfig.DatabaseFilename);

            try
            {
                _config.Database = databaseConfig.DatabaseFilename;
                using (var session = new Session(_instance))
                {
                    JET_DBID dbid;
                    Api.JetCreateDatabase2(
                        session,
                        databasePath,
                        databaseConfig.DatabaseMaxPages,
                        out dbid,
                        databaseConfig.DatabaseCreationFlags |
                        CreateDatabaseGrbit.OverwriteExisting |
                        CreateDatabaseGrbit.RecoveryOff
                        );


                    try
                    {
                        // Abstract function
                        using (var transaction = new Transaction(session))
                        {
                            CreateManagedTable(session, dbid);

                            transaction.Commit(CommitTransactionGrbit.None);
                            Api.JetCloseDatabase(session, dbid, CloseDatabaseGrbit.None);
                        }
                    }
                    catch (Exception)
                    {
                        // Delete the partially constructed database
                        Api.JetCloseDatabase(session, dbid, CloseDatabaseGrbit.None);
                        Api.JetDetachDatabase(session, databasePath);
                        File.Delete(databasePath);
                        throw;
                    }
                }

                // Get the cursor cache
                _cursors = new ManagedTableCursorCache <TConfig, TCursor>(
                    _instance,
                    _config,
                    OpenCursor
                    );
            }
            catch (Exception)
            {
                // We have failed to initialize for some reason. Terminate
                // the instance.
                _instance.Term();
                throw;
            }

            // Now attach the database to the instance and held variable
            _database = new Database(_instance.JetInstance, false, databaseConfig);
        }
Ejemplo n.º 11
0
 /// <summary>
 /// Initialize the JET_INSTANCE.
 /// </summary>
 /// <param name="grbit">
 /// Initialization options.
 /// </param>
 public void Init(InitGrbit grbit)
 {
     this.CheckObjectIsNotDisposed();
     JET_INSTANCE instance = this.JetInstance;
     try
     {
         // Remember that a failure in JetInit can zero the handle
         // and that JetTerm should not be called in that case.
         Api.JetInit2(ref instance, grbit);
     }
     finally
     {
         this.SetHandle(instance.Value);
     }
 }