DD.WellWorkover.Cloud/AsbCloudInfrastructure/Services/Subsystems/SubsystemOperationTimeBackgroundService.cs

using AsbCloudDb.Model;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace AsbCloudInfrastructure.Services.Subsystems
{
    internal class SubsystemOperationTimeBackgroundService : BackgroundService
    {
        private readonly string connectionString;
        public SubsystemOperationTimeBackgroundService(IConfiguration configuration)
        {
            connectionString = configuration.GetConnectionString("DefaultConnection");
        }
        protected override async Task ExecuteAsync(CancellationToken token)
        {
            var timeToStartAnalysis = DateTime.Now;
            var options = new DbContextOptionsBuilder<AsbCloudDbContext>()
                .UseNpgsql(connectionString)
                .Options;

            while (!token.IsCancellationRequested)
            {
                if (DateTime.Now > timeToStartAnalysis)
                {
                    timeToStartAnalysis = DateTime.Now + TimeSpan.FromHours(1);
                    try
                    {
                        
                    }
                    catch (Exception ex)
                    {
                        Trace.TraceError(ex.Message);
                    }
                    //GC.Collect();
                }

                var ms = (int)(timeToStartAnalysis - DateTime.Now).TotalMilliseconds;
                ms = ms > 100 ? ms : 100;
                await Task.Delay(ms, token).ConfigureAwait(false);
            }
        }
    }
}