mapo-core/MP.Mon/Data/MpDataService.cs

using MP.Data.DatabaseModels;
using System.Text;
using StackExchange.Redis;
using NLog;
using MP.Data.DTO;
using Newtonsoft.Json;
using MP.Data;

namespace MP.Mon.Data
{
    public class MpDataService : IDisposable
    {
        #region Private Fields

        private static IConfiguration _configuration;
        private static ILogger<MpDataService> _logger;

        private static NLog.Logger Log = LogManager.GetCurrentClassLogger();

        /// <summary>
        /// Oggetto per connessione a REDIS
        /// </summary>
        private ConnectionMultiplexer redisConn = null!;

        //ISubscriber sub = redis.GetSubscriber();
        /// <summary>
        /// Oggetto DB redis da impiegare x chiamate R/W
        /// </summary>
        private IDatabase redisDb = null!;

        #endregion Private Fields

        #region Public Fields

        public static MP.Data.Controllers.MpMonController dbController;

        #endregion Public Fields

        #region Public Constructors

        public MpDataService(IConfiguration configuration, ILogger<MpDataService> logger)
        {
            _logger = logger;
            _configuration = configuration;

            // setup compoenti REDIS
            this.redisConn = ConnectionMultiplexer.Connect(_configuration.GetConnectionString("Redis"));
            this.redisDb = this.redisConn.GetDatabase();
            //// setup canali pub/sub
            //actLogPipe = new MessagePipe(redisConn, Constants.ACT_LOG_M_QUEUE);

            // conf DB
            string connStr = _configuration.GetConnectionString("Mp.Mon");
            if (string.IsNullOrEmpty(connStr))
            {
                _logger.LogError("ConnString empty!");
            }
            else
            {
                dbController = new MP.Data.Controllers.MpMonController(configuration);
                StringBuilder sb = new StringBuilder();
                sb.AppendLine($"DbController OK");
                //sb.AppendLine($"CST: {dbController.CustomersCount()} | CNT: {dbController.CountersCount()} | BSK: {dbController.BasketsCount()} | NGT: {dbController.NegotiationsCount()} | DOC: {dbController.DocsCount()} | ITM: {dbController.ItemsCount()} | RES: {dbController.ResourcesCount()}");
                _logger.LogInformation(sb.ToString());
            }
        }

        #endregion Public Constructors

        #region Public Methods

        public Task<List<ConfigModel>> ConfigGetAll()
        {
            return Task.FromResult(dbController.ConfigGetAll().ToList());
        }

        public void Dispose()
        {
            // Clear database controller
            dbController.Dispose();
        }

        public Task<List<Macchine>> MacchineGetAll()
        {
            return Task.FromResult(dbController.MacchineGetAll().ToList());
        }

        public Task<List<MappaStatoExpl>> MseGetAll()
        {
            var dbResult = dbController.MseGetAll();
            if (dbResult == null)
            {
                dbResult = new List<MappaStatoExpl>();
            }
            return Task.FromResult(dbResult);
        }

        /// <summary>
        /// Configurazione (REDIS) dei tag in override
        /// </summary>
        /// <param name="CodIOB">IOB di cui cercare la conf</param>
        /// <returns></returns>
        public async Task<List<TagDataDTO>> getTagConf(string CodIOB)
        {
            List<TagDataDTO>? currResult = new List<TagDataDTO>();
            // cerco in REDIS la conf x l'IOB
            string rawData = await redisDb.StringGetAsync($"{Constants.CONF_MON_KEY}:{CodIOB}");
            if (!string.IsNullOrEmpty(rawData))
            {
                currResult = JsonConvert.DeserializeObject<List<TagDataDTO>>(rawData);
            }
            // altrimenti in conf file, se presente, e salvo
            if (currResult == null)
            {
                currResult = tryLoadConf(CodIOB);
            }
            // altrimenti vuoto!
            if (currResult == null)
            {
                currResult = new List<TagDataDTO>();
            }
            return await Task.FromResult(currResult);
        }

        /// <summary>
        /// Prova a caricare da file la conf dell'IOB richiesto salvando su REDIS
        /// </summary>
        /// <param name="codIOB"></param>
        /// <exception cref="NotImplementedException"></exception>
        private List<TagDataDTO> tryLoadConf(string codIOB)
        {
            List<TagDataDTO> currConf = new List<TagDataDTO>();
            string strExeFilePath = System.Reflection.Assembly.GetExecutingAssembly().Location;
            string strWorkPath = Path.GetDirectoryName(strExeFilePath);

            string filePath = $"{strWorkPath}/Conf/{codIOB}";
            if (File.Exists(filePath))
            {
                string rawData = File.ReadAllText(filePath);
                if (!string.IsNullOrEmpty(rawData))
                {
                    currConf = JsonConvert.DeserializeObject<List<TagDataDTO>>(rawData);
                    // salvo in redis!
                    redisDb.StringSet($"{Constants.CONF_MON_KEY}:{codIOB}", rawData);
                }
            }
            if (currConf == null)
            {
                currConf = new List<TagDataDTO>();
            }
            // rendo!
            return currConf;
        }

        #endregion Public Methods
    }
}