From f836b39da0edfa4e28c5ea0b593172f06e3292ed Mon Sep 17 00:00:00 2001
From: "Collin M. Barrett" <collinbarrett@users.noreply.github.com>
Date: Tue, 21 Aug 2018 12:41:03 -0500
Subject: [PATCH] don't email for deployment-interrupted snapshot exceptions

---
 src/FilterLists.Services/Snapshot/Snapshot.cs | 22 ++++++++++++-------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/src/FilterLists.Services/Snapshot/Snapshot.cs b/src/FilterLists.Services/Snapshot/Snapshot.cs
index f9cdc0da3..45f935635 100644
--- a/src/FilterLists.Services/Snapshot/Snapshot.cs
+++ b/src/FilterLists.Services/Snapshot/Snapshot.cs
@@ -182,16 +182,22 @@ private async Task TrackException(Exception e)
 
         private async Task SendExceptionEmail(Exception e)
         {
-            var msg = new StringBuilder();
-            msg.AppendLine("FilterListId: " + list.Id);
-            msg.AppendLine("Exception:");
-            msg.AppendLine(e.Message);
-            msg.AppendLine(e.StackTrace);
-            msg.AppendLine(e.InnerException?.Message);
-            msg.AppendLine(e.InnerException?.StackTrace);
-            await emailService.SendEmailAsync("Snapshot Exception", msg.ToString());
+            if (!IsDeploymentInterrupted(e))
+            {
+                var msg = new StringBuilder();
+                msg.AppendLine("FilterListId: " + list.Id);
+                msg.AppendLine("Exception:");
+                msg.AppendLine(e.Message);
+                msg.AppendLine(e.StackTrace);
+                msg.AppendLine(e.InnerException?.Message);
+                msg.AppendLine(e.InnerException?.StackTrace);
+                await emailService.SendEmailAsync("Snapshot Exception", msg.ToString());
+            }
         }
 
+        private static bool IsDeploymentInterrupted(Exception e) =>
+            e.Message.Contains("Failed to read the result set.");
+
         private void TrackExceptionInApplicationInsights(Exception e)
         {
             telemetryClient.TrackException(e);