https://github.com/ginger-code/pollwatcher

Register handler functions to polling methods
https://github.com/ginger-code/pollwatcher

Last synced: about 1 year ago
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Register handler functions to polling methods

• Host: GitHub
• URL: https://github.com/ginger-code/pollwatcher
• Owner: ginger-code
• License: mit
• Created: 2021-01-20T05:02:37.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2021-01-20T05:22:43.000Z (over 5 years ago)
• Last Synced: 2025-02-10T22:37:10.745Z (over 1 year ago)
• Language: C#
• Size: 5.86 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# PollWatcher

PollWatcher provides a way to register handler delegates to poll-based monitoring solutions.

This enables event-driven development in scenarios where events are not provided and cannot easily be added.

Possible use-cases include: polling a remote file server for changes, monitoring responses from an API, creating a recurring database task, etc.

Built leveraging the System.Reactive namespace

Example (C# 9.0 syntax): 

```c#

internal static class Program

{

    private static void Main()

    {

        using var watcher      = new PollWatcher(GetDate, interval, PrintDate, PrintException);

        // using var asyncWatcher = new AsyncPollWatcher(GetDateAsync, interval, PrintDate, PrintException);

        Thread.Sleep(5000);

    }

    // Returns a value that changes over time but must be retrieved synchronously

    // In this case, it's the time

    private static DateTime GetDate() => DateTime.Now;

    

    // Returns a value that changes over time but must be retrieved asynchronously

    // In this case, it's the time

    private static async Task GetDateAsync() => await Task.Run(() => DateTime.Now);

    //Specifies polling should occur every .001ms (if possible)

    private static TimeSpan interval = TimeSpan.FromMilliseconds(.001);

    // "Does stuff" with the data retrieved from polling

    // In this case, we print it to the console

    private static void PrintDate(DateTime dateTime) => Console.WriteLine(dateTime.ToString("O"));

    // "Does stuff" with exceptions raised during polling

    // In this case, we print it to the console

    private static void PrintException(Exception exception) => Console.WriteLine($"Exception!!!\t{exception.Message}");

}

```