From f0d83a85f4e57377ba394e545a7e50697764dc73 Mon Sep 17 00:00:00 2001
From: Tom Kerkhove <kerkhove.tom@gmail.com>
Date: Sun, 7 Apr 2019 11:37:17 +0200
Subject: [PATCH] Support no messages available with TimeSpentInQueue & Storage
 scraper (#496)

Signed-off-by: Tom Kerkhove <kerkhove.tom@gmail.com>
---
 .../AzureStorageQueueClient.cs                           | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/Promitor.Integrations.AzureStorage/AzureStorageQueueClient.cs b/src/Promitor.Integrations.AzureStorage/AzureStorageQueueClient.cs
index 0269607dc..ddf728dab 100644
--- a/src/Promitor.Integrations.AzureStorage/AzureStorageQueueClient.cs
+++ b/src/Promitor.Integrations.AzureStorage/AzureStorageQueueClient.cs
@@ -49,8 +49,13 @@ public async Task<double> GetQueueMessageTimeSpentInQueueAsync(string accountNam
         {
             var queue = await GetQueueReference(accountName, queueName, sasToken);
 
-            var msg = await queue.PeekMessageAsync();
-            var timeSpentInQueue = msg.InsertionTime.HasValue ? DateTime.UtcNow - msg.InsertionTime.Value.UtcDateTime : TimeSpan.Zero;
+            var message = await queue.PeekMessageAsync();
+
+            TimeSpan timeSpentInQueue = TimeSpan.Zero;
+            if (message?.InsertionTime.HasValue == true)
+            {
+                timeSpentInQueue = DateTime.UtcNow - message.InsertionTime.Value.UtcDateTime;
+            }
 
             return timeSpentInQueue.TotalSeconds;
         }