public async Task FetchAsync(IRequestTask requestTask, CancellationToken cancellationToken)
{
while (true)
{
var result = await TryFetchAsync(requestTask, cancellationToken);
if (result)
{
break;
}
requestTask.LastTryTime = Clock.Now;
requestTask.TryCount += 1;
requestTask.NextTryTime = requestTask.CalculateNextTryTime();
_logger.LogInformation($"try to connect to uri[{requestTask.Uri}] at {requestTask.NextTryTime.ToString("yyyyMMddHHmmss")}");
var now = Clock.Now;
var delayTimeSpan = new TimeSpan();
if (requestTask.NextTryTime > now)
{
delayTimeSpan = requestTask.NextTryTime - now;
}
await Task.Delay(delayTimeSpan, cancellationToken);
_logger.LogInformation($"try to connect to uri[{requestTask.Uri}]");
}
}