/
WorkerWithSemaphore.cs
33 lines (28 loc) · 1.17 KB
/
WorkerWithSemaphore.cs
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using SimpleCronWorkerService;
namespace WebApplicationApiSample.Services
{
public class WorkerWithSemaphore : CronWorkerService
{
private readonly ILogger<Worker> _logger;
private readonly SemaphoreSlim _semaphoreSlim;
public WorkerWithSemaphore(CronWorkerServiceSettings<WorkerWithSemaphore> cronWorkerServiceSettings, ILogger<Worker> logger)
: base(cronWorkerServiceSettings)
{
_logger = logger;
_semaphoreSlim = new SemaphoreSlim(1);
}
protected override async Task DoWork(CancellationToken cancellationToken)
{
if (!await _semaphoreSlim.WaitAsync(TimeSpan.FromMilliseconds(10)))
{
_logger.LogWarning("Previous instance has not yet finish, skipping");
return;
}
var guid = Guid.NewGuid();
_logger.LogInformation("Running WorkerWithSemaphore at {date} - Task:{guid}", DateTime.UtcNow, guid);
await Task.Delay(5000);
_logger.LogInformation("Finished WorkerWithSemaphore at {date} - Task:{guid}", DateTime.UtcNow, guid);
_semaphoreSlim.Release();
}
}
}