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How to write a linux daemon with .Net Core

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离开以前
离开以前 2021-01-31 05:22

I could just write a long-running CLI app and run it, but I\'m assuming it wouldn\'t comply to all the expectations one would have of a standards-compliant linux daemon (respond

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  • 再見小時候
    再見小時候 (楼主)
    2021-01-31 06:08

    The best I could come up with is based on the answer to two other questions: Killing gracefully a .NET Core daemon running on Linux and Is it possible to await an event instead of another async method?

    using System;
using System.Runtime.Loader;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    public class Program
    {
        private static TaskCompletionSource taskToWait;

        public static void Main(string[] args)
        {
            taskToWait = new TaskCompletionSource();

            AssemblyLoadContext.Default.Unloading += SigTermEventHandler;
            Console.CancelKeyPress += new ConsoleCancelEventHandler(CancelHandler);

            //eventSource.Subscribe(eventSink) or something...

            taskToWait.Task.Wait();

            AssemblyLoadContext.Default.Unloading -= SigTermEventHandler;
            Console.CancelKeyPress -= new ConsoleCancelEventHandler(CancelHandler);

        }


        private static void SigTermEventHandler(AssemblyLoadContext obj)
        {
            System.Console.WriteLine("Unloading...");
            taskToWait.TrySetResult(null);
        }

        private static void CancelHandler(object sender, ConsoleCancelEventArgs e)
        {
            System.Console.WriteLine("Exiting...");
            taskToWait.TrySetResult(null);
        }

    }
}

    
    
             
    
                                                        
    
            
            
    
              
                
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