An attribute that prevents processing a Hangfire job that is part of recurring job currently in the Retry state.

SkipRetryingRecurrentJobAttribute.cs

/// <summary>
/// An attribute that prevents processing a Hangfire job that is part of recurring job currently in the Retry state.
/// </summary>
/// <remarks>
/// This attribute is intended for recurring tasks only. If used on any other type of task, an exception will be thrown.
/// </remarks>
public class SkipRetryingRecurrentJobAttribute : JobFilterAttribute, IServerFilter
{
	private const string recurringJobId = "RecurringJobId";
	
	public void OnPerforming(PerformingContext context)
	{
		var recurringName = context.GetJobParameter<string>("RecurringJobId");
		if (string.IsNullOrEmpty(recurringName))
		{
			throw new InvalidOperationException(nameof(SkipConcurrentTaskExecutionAttribute) + " can be used only for recurring jobs.");
		}
		
		if (!(context.Connection is JobStorageConnection storage))
		{
			throw new InvalidOperationException($"Only {nameof(JobStorageConnection)} is supported.");
		}

		var retryJobIds = storage.GetAllItemsFromSet("retries");
		foreach (var retryJobId in retryJobIds)
		{
			// never resolve current job
			if (retryJobId == context.BackgroundJob.Id)
				continue;
			
			// get the name of reccuring job from the retry job Id
			var retryJobRecurringName = DeserializeJobParameterString(storage.GetJobParameter(retryJobId, recurringJobId));
			// if we're trying to start new job with the same recurring name as in retry set, cancel the run
			if (retryJobRecurringName == recurringName)
			{
				context.Canceled = true;
			}
		}
	}

	public void OnPerformed(PerformedContext context)
	{
	}

	private static string DeserializeJobParameterString(string value)
	{
		if (string.IsNullOrEmpty(value))
			return value;
		
		// if it starts and ends with quotes, get rid of them
		if (value.StartsWith("\"") && value.EndsWith("\""))
		{
			return value.Substring(1, value.Length - 2);
		}

		// nothing here
		return value;
	}
}