server/util/RetryHelper.cs

@@ -0,0 +1,52 @@
+using System;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+
+namespace Sockeye.Util
+{
+
+    /// <summary>
+    /// what it says
+    /// </summary>
+    public static class RetryHelper
+    {
+       
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="times"></param>
+        /// <param name="delay"></param>
+        /// <param name="log"></param>
+        /// <param name="logPrepend"></param>
+        /// <param name="operation"></param>
+        public static void RetryOnException(int times, TimeSpan delay, ILogger log, string logPrepend, Action operation)
+        {
+            var attempts = 0;
+            do
+            {
+                try
+                {
+                    attempts++;
+                    operation();
+                    break; // Sucess! Lets exit the loop!
+                }
+                catch (Exception ex)
+                {
+                    if (attempts == times)
+                        throw;
+                    
+                    log.LogError(ex, $"{logPrepend} Exception caught on attempt {attempts} of {times} - will retry after delay {delay}");                  
+
+                    Task.Delay(delay).Wait();
+                }
+            } while (true);
+        }
+
+
+
+
+
+
+
+    }
+}