Example #1
0
        /// <summary>
        /// Receives the configuration database subset from Server.
        /// </summary>
        private bool ReceiveConfigBase(out ConfigBaseSubset configBase)
        {
            configBase = new ConfigBaseSubset();

            if (ServerComm.ReceiveBaseTable("incnl.dat", configBase.InCnlTable) &&
                ServerComm.ReceiveBaseTable("kp.dat", configBase.KPTable))
            {
                return(true);
            }
            else
            {
                configBase = null;
                return(false);
            }
        }
Example #2
0
        /// <summary>
        /// Принять таблицу входных каналов и таблицу КП от SCADA-Сервера
        /// </summary>
        private bool ReceiveBaseTables(out DataTable tblInCnl, out DataTable tblKP)
        {
            tblInCnl = new DataTable();
            tblKP    = new DataTable();

            if (ServerComm.ReceiveBaseTable("incnl.dat", tblInCnl) &&
                ServerComm.ReceiveBaseTable("kp.dat", tblKP))
            {
                return(true);
            }
            else
            {
                tblInCnl = null;
                tblKP    = null;
                return(false);
            }
        }
Example #3
0
        /// <summary>
        /// Обновить таблицы базы конфигурации, свойства каналов и статусов
        /// </summary>
        public void RefreshBaseTables()
        {
            lock (baseLock)
            {
                try
                {
                    DateTime utcNowDT = DateTime.UtcNow;

                    if (utcNowDT - baseRefrDT > BaseValidSpan) // данные устарели
                    {
                        baseRefrDT = utcNowDT;
                        DateTime newBaseAge = serverComm.ReceiveFileAge(ServerComm.Dirs.BaseDAT,
                                                                        BaseTables.GetFileName(BaseTables.InCnlTable));

                        if (newBaseAge == DateTime.MinValue) // база конфигурации не существует или нет связи с сервером
                        {
                            throw new ScadaException(Localization.UseRussian ?
                                                     "Не удалось принять время изменения базы конфигурации." :
                                                     "Unable to receive the configuration database modification time.");
                        }
                        else if (BaseTables.BaseAge != newBaseAge) // база конфигурации изменена
                        {
                            log.WriteAction(Localization.UseRussian ?
                                            "Обновление таблиц базы конфигурации" :
                                            "Refresh the tables of the configuration database");

                            // ожидание снятия возможной блокировки базы конфигурации
                            DateTime t0 = utcNowDT;
                            while (serverComm.ReceiveFileAge(ServerComm.Dirs.BaseDAT, "baselock") > DateTime.MinValue &&
                                   DateTime.UtcNow - t0 <= WaitBaseLock)
                            {
                                Thread.Sleep(ScadaUtils.ThreadDelay);
                            }

                            // загрузка данных в таблицы
                            BaseTables newBaseTables = new BaseTables()
                            {
                                BaseAge = newBaseAge
                            };
                            foreach (DataTable dataTable in newBaseTables.AllTables)
                            {
                                string tableName = BaseTables.GetFileName(dataTable);

                                if (!serverComm.ReceiveBaseTable(tableName, dataTable))
                                {
                                    throw new ScadaException(string.Format(Localization.UseRussian ?
                                                                           "Не удалось принять таблицу {0}" :
                                                                           "Unable to receive the table {0}", tableName));
                                }
                            }
                            BaseTables = newBaseTables;

                            // заполнение свойств каналов и статусов
                            lock (BaseTables.SyncRoot)
                            {
                                FillCnlProps();
                                FillCtrlCnlProps();
                                FillCnlStatProps();
                            }
                        }
                    }
                }
                catch (Exception ex)
                {
                    BaseTables.BaseAge = DateTime.MinValue;
                    log.WriteException(ex, Localization.UseRussian ?
                                       "Ошибка при обновлении таблиц базы конфигурации" :
                                       "Error refreshing the tables of the configuration database");
                }
            }
        }
Example #4
0
        /// <summary>
        /// Update configuration database tables, channel properties and statuses
        /// </summary>
        public void RefreshBaseTables()
        {
            lock (baseLock) {
                try {
                    var utcNowDT = DateTime.UtcNow;

                    if (utcNowDT - baseRefrDT > BaseValidSpan)   // data is out of date
                    {
                        baseRefrDT = utcNowDT;
                        var newBaseAge = serverComm.ReceiveFileAge(ServerComm.Dirs.BaseDAT,
                                                                   BaseTables.GetFileName(BaseTables.InCnlTable));

                        if (newBaseAge == DateTime.MinValue)
                        {
                            // configuration database does not exist or there is no connection to the server
                            throw new ScadaException("Unable to receive the configuration database modification time.");
                        }

                        if (BaseTables.BaseAge != newBaseAge)   // configuration base changed
                        {
                            log.WriteAction("Refresh the tables of the configuration database");

                            // waiting for unlocking possible configuration base
                            var t0 = utcNowDT;
                            while (serverComm.ReceiveFileAge(ServerComm.Dirs.BaseDAT, "baselock") > DateTime.MinValue &&
                                   DateTime.UtcNow - t0 <= WaitBaseLock)
                            {
                                Thread.Sleep(ScadaUtils.ThreadDelay);
                            }

                            // loading data into tables
                            var newBaseTables = new BaseTables()
                            {
                                BaseAge = newBaseAge
                            };
                            foreach (var dataTable in newBaseTables.AllTables)
                            {
                                string tableName = BaseTables.GetFileName(dataTable);

                                if (!serverComm.ReceiveBaseTable(tableName, dataTable))
                                {
                                    throw new ScadaException($"Unable to receive the table {tableName}");
                                }
                            }

                            BaseTables = newBaseTables;

                            // filling channel properties and statuses
                            lock (BaseTables.SyncRoot) {
                                FillCnlProps();
                                FillCtrlCnlProps();
                                FillCnlStatProps();
                            }
                        }
                    }
                } catch (Exception ex) {
                    BaseTables.BaseAge = DateTime.MinValue;
                    log.WriteException(ex, "Error refreshing the tables of the configuration database");
                }
            }
        }