Added a pause between indexing steps for shared embedding servers (#1114)

app/MindWork AI Studio/Settings/DataModel/DataDataSourceIndexing.cs

@@ -1,9 +1,41 @@
+using System.Linq.Expressions;
+
 namespace AIStudio.Settings.DataModel;
 
-public sealed class DataDataSourceIndexing
+/// <summary>
+/// Settings for indexing local data sources.
+/// </summary>
+/// <param name="configSelection">The managed-configuration selector.</param>
+public sealed class DataDataSourceIndexing(Expression<Func<Data, DataDataSourceIndexing>>? configSelection = null)
 {
+    /// <summary>
+    /// The longest pause between two indexing steps either bound may ask for.
+    /// </summary>
+    public const int MAX_PAUSE_BETWEEN_STEPS_SECONDS = 300;
+
+    /// <summary>
+    /// Initializes an unmanaged instance, e.g., for the JSON deserializer.
+    /// </summary>
+    public DataDataSourceIndexing() : this(null)
+    {
+    }
+
     /// <summary>
     /// Whether local data source embeddings should refresh automatically when files change.
     /// </summary>
     public bool AutomaticRefresh { get; set; } = true;
+
+    /// <summary>
+    /// The lower bound of the random pause between two indexing steps, in seconds.
+    /// </summary>
+    /// <remarks>
+    /// The pause spares an embedding server which many people share, e.g., in an organization. Zero
+    /// together with a zero upper bound means no pause.
+    /// </remarks>
+    public int MinimumPauseBetweenStepsSeconds { get; set; } = ManagedConfiguration.Register(configSelection, n => n.MinimumPauseBetweenStepsSeconds, 0);
+
+    /// <summary>
+    /// The upper bound of the random pause between two indexing steps, in seconds.
+    /// </summary>
+    public int MaximumPauseBetweenStepsSeconds { get; set; } = ManagedConfiguration.Register(configSelection, n => n.MaximumPauseBetweenStepsSeconds, 0);
 }