load only once

src/Umbraco.Core/Sync/ISyncBootStateAccessor.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Umbraco.Core.Sync
+{
+    /// <summary>
+    /// Retrieve the state of the sync service
+    /// </summary>
+    public interface ISyncBootStateAccessor
+    {
+        /// <summary>
+        /// Get the boot state
+        /// </summary>
+        /// <returns></returns>
+        SyncBootState GetSyncBootState();
+    }
+    public enum SyncBootState
+    {
+        /// <summary>
+        /// Unknown state. Treat as HasSyncState
+        /// </summary>
+        Unknown = 0,
+        /// <summary>
+        /// Cold boot. No Sync state
+        /// </summary>
+        ColdBoot = 1,
+        /// <summary>
+        /// Warm boot. Sync state present
+        /// </summary>
+        HasSyncState = 2
+    }
+}