database maintenance function

util/Function/DatabaseMaintenance.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Configuration;
+using System.Data;
+using System.Data.SqlClient;
+using Microsoft.Azure.WebJobs;
+using Microsoft.Azure.WebJobs.Host;
+
+namespace Bit.Function
+{
+    public static class DatabaseMaintenance
+    {
+        [FunctionName("DatabaseMaintenance")]
+        public static void Run([TimerTrigger("0 0 * * *")]TimerInfo myTimer, TraceWriter log)
+        {
+            var connectionString = ConfigurationManager.ConnectionStrings["vault_db"].ConnectionString;
+            using(var connection = new SqlConnection(connectionString))
+            {
+                connection.Open();
+
+                // ref: http://bit.ly/2zFNcZo
+                var cmd = new SqlCommand("[dbo].[AzureSQLMaintenance]", connection)
+                {
+                    CommandType = CommandType.StoredProcedure
+                };
+
+                // Options: "all", "index", "statistics"
+                cmd.Parameters.Add("@operation", SqlDbType.NVarChar).Value = "all";
+                // Options: "smart", "dummy"
+                cmd.Parameters.Add("@mode", SqlDbType.NVarChar).Value = "smart";
+                // Options: 0, 1
+                cmd.Parameters.Add("@LogToTable", SqlDbType.Bit).Value = 1;
+
+                // Asynchronous BeginExecuteNonQuery for this long running sproc to avoid timeouts
+                var result = cmd.BeginExecuteNonQuery();
+                cmd.EndExecuteNonQuery(result);
+            }
+        }
+    }
+}

util/Function/KeepAlive.cs

@@ -7,9 +7,7 @@ namespace Bit.Function
     public static class KeepAlive
     {
         [FunctionName("KeepAlive")]
-        public static void Run(
+        public static void Run([TimerTrigger("0 */15 * * * *")]TimerInfo myTimer, TraceWriter log)
-            [TimerTrigger("0 */15 * * * *")]TimerInfo myTimer,
-            TraceWriter log)
         {
             log.Info($"C# Timer trigger function executed at: {DateTime.Now}");
         }