mapo-core/MP-TAB3/Components/MseSampler.razor.cs

using global::Microsoft.AspNetCore.Components;
using MP.Data.DatabaseModels;
using MP.Data.Services;
using NLog;

namespace MP_TAB3.Components
{
    public partial class MseSampler : IDisposable
    {
        #region Public Properties

        [Parameter]
        public EventCallback<List<MappaStatoExpl>> E_Updated { get; set; }

        /// <summary> Moltiplicatore campionamento:
        /// HF: se > 1 (mappa)
        /// LF: se < 1 (dettaglio) </summary>
        [Parameter]
        public double SampleMult { get; set; } = 1;

        #endregion Public Properties

        #region Public Methods

        public void Dispose()
        {
            if (aTimer != null)
            {
                disposeTimer();
            }
        }

        #endregion Public Methods

        #region Protected Fields

        protected int fastTimerMSec = 3000;

        #endregion Protected Fields

        #region Protected Properties

        [Inject]
        protected IConfiguration config { get; set; } = null!;

        protected int fastRefreshMs
        {
            get
            {
                // tempo variabile tra +/- 10% del target (SampleMult) della freq standard di update MSE
                int answ = ((int)(fastTimerMSec / SampleMult * rnd.Next(900, 1100))) / 1000;
                return answ;
            }
        }

        [Inject]
        protected MessageService MServ { get; set; } = null!;

        [Inject]
        protected StatusData SDService { get; set; } = null!;

        #endregion Protected Properties

        #region Protected Methods

        protected void ElapsedTimer(object? source, System.Timers.ElapsedEventArgs e)
        {
            try
            {
                var pUpd = Task.Run(async () =>
                {
                    numCall++;
                    // se supero limite --> resetto
                    if (numCall >= maxCall)
                    {
                        StartTimer();
                        numCall = 0;
                    }
                    else
                    {
                        aTimer.Interval = fastRefreshMs;
                        await InvokeAsync(RefreshData);
                    }
                });
                pUpd.Wait();
            }
            catch (Exception exc)
            {
                Log.Error($"Eccezione durante MseSampler.ElapsedTimer{Environment.NewLine}{exc}");
            }
        }

        protected override void OnInitialized()
        {
            SetupConf();
            StartTimer();
        }

        protected void StartTimer()
        {
            if (aTimer != null)
            {
                disposeTimer();
            }
            aTimer = new System.Timers.Timer(fastRefreshMs);
            aTimer.Elapsed += ElapsedTimer;
            aTimer.Enabled = true;
            aTimer.Start();
            Log.Info("MseSampler Timer started!");
        }

        #endregion Protected Methods

        #region Private Fields

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

        private System.Timers.Timer aTimer = null!;

        /// <summary>
        /// max chimate prima di fare dispose/GC
        /// </summary>
        private int maxCall = 10;

        /// <summary>
        /// Numero chiamate al sampler
        /// </summary>
        private int numCall = 0;

        private Random rnd = new Random();

        #endregion Private Fields

        #region Private Methods

        private void disposeTimer()
        {
            aTimer.Elapsed -= ElapsedTimer;
            aTimer.Stop();
            aTimer.Dispose();
            GC.Collect();
            Log.Info("MseSampler Timer Disposed!");
        }

        private async Task RefreshData()
        {
            List<MappaStatoExpl> ListMSE = await SDService.MseGetAll();
            await MServ.SaveMse(ListMSE);
            await E_Updated.InvokeAsync(ListMSE);
        }

        private void SetupConf()
        {
            // sistemo i parametri opzionali...
            fastTimerMSec = config.GetValue<int>("OptConf:msRefresh");
            maxCall = config.GetValue<int>("OptConf:samplerMaxCall");
            Log.Trace($"MseSampler setupConf | Effettuato setup parametri | fastRefreshMSec: {fastTimerMSec} | maxCall: {maxCall}");
        }

        #endregion Private Methods
    }
}