Exemplo n.º 1
0
        private Retry CreateNewRetry(RetryHistory history)
        {
            int expoBackoff     = System.Convert.ToInt32(Math.Pow(2, history.Retries.Count)) * history.Configuration.BaseDelayMs;
            int jitteredBackoff = history.Configuration.Jitter(history.Retries, expoBackoff, history.Random);

            return(new Retry(expoBackoff, jitteredBackoff));
        }
Exemplo n.º 2
0
 public async Task InvokeWithRetry(Func <Task> request, RetryHistory history)
 {
     try
     {
         await request();
     }
     catch (Exception e)
     {
         if (history.Configuration != null && _del(e))
         {
             await Backoff(history, e);
             await InvokeWithRetry(request, history);
         }
         else
         {
             throw e;
         }
     }
 }
Exemplo n.º 3
0
        public async Task <T> InvokeWithRetry <T>(Func <Task <T> > request, RetryHistory history)
        {
            try
            {
                return(await request());
            }
            catch (Exception e)
            {
                if (history.Configuration != null && _del(e))
                {
                    await Backoff(history, e);

                    return(await InvokeWithRetry <T>(request, history));
                }
                else
                {
                    throw e;
                }
            }
        }
Exemplo n.º 4
0
        private Task Backoff(RetryHistory history, Exception e)
        {
            if (history.Retries.Count >= history.Configuration.MaxAttempts)
            {
                throw new TaskCanceledException("Exceeded max retry attempts.", e);
            }

            Retry newRetry = CreateNewRetry(history);

            history.Retries.Add(newRetry);
            history.Configuration.RetryListener?.Invoke(history.Retries.Count, newRetry);

            if (history.UserCancelToken.HasValue)
            {
                return(Task.Delay(newRetry.JitterBackoff, history.UserCancelToken.Value));
            }
            else
            {
                return(Task.Delay(newRetry.JitterBackoff));
            }
        }