Initial commit

2026-06-02 10:51:14 +02:00
commit d19092c84e
182 changed files with 13757 additions and 0 deletions
@@ -0,0 +1,41 @@
+using Microsoft.SharePoint.Client;
+using SharepointToolbox.Web.Core.Models;
+
+namespace SharepointToolbox.Web.Core.Helpers;
+
+public static class ExecuteQueryRetryHelper
+{
+    private const int MaxRetries = 5;
+
+    public static async Task ExecuteQueryRetryAsync(
+        ClientContext ctx,
+        IProgress<OperationProgress>? progress = null,
+        CancellationToken ct = default)
+    {
+        int attempt = 0;
+        while (true)
+        {
+            ct.ThrowIfCancellationRequested();
+            try
+            {
+                await ctx.ExecuteQueryAsync();
+                return;
+            }
+            catch (Exception ex) when (IsThrottleException(ex) && attempt < MaxRetries)
+            {
+                attempt++;
+                int delaySeconds = (int)Math.Pow(2, attempt) * 5;
+                progress?.Report(OperationProgress.Indeterminate(
+                    $"Throttled by SharePoint — retrying in {delaySeconds}s (attempt {attempt}/{MaxRetries})…"));
+                await Task.Delay(TimeSpan.FromSeconds(delaySeconds), ct);
+            }
+        }
+    }
+
+    internal static bool IsThrottleException(Exception ex)
+    {
+        var msg = ex.Message;
+        return msg.Contains("429") || msg.Contains("503") ||
+               msg.Contains("throttl", StringComparison.OrdinalIgnoreCase);
+    }
+}