chore: import upstream snapshot with attribution

2026-07-13 13:21:23 +08:00
commit b957a53def
5423 changed files with 863745 additions and 0 deletions
@@ -0,0 +1,48 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Runtime.CompilerServices;
+using Microsoft.SemanticKernel;
+using Microsoft.SemanticKernel.ChatCompletion;
+
+namespace ChatCompletion;
+
+/// <summary>
+/// Instance of <see cref="IChatCompletionService"/> which will invoke a delegate
+/// to reduce the size of the <see cref="ChatHistory"/> before sending it to the model.
+/// </summary>
+public sealed class ChatCompletionServiceWithReducer(IChatCompletionService service, IChatHistoryReducer reducer) : IChatCompletionService
+{
+    private static IReadOnlyDictionary<string, object?> EmptyAttributes { get; } = new Dictionary<string, object?>();
+
+    public IReadOnlyDictionary<string, object?> Attributes => EmptyAttributes;
+
+    /// <inheritdoc/>
+    public async Task<IReadOnlyList<ChatMessageContent>> GetChatMessageContentsAsync(
+        ChatHistory chatHistory,
+        PromptExecutionSettings? executionSettings = null,
+        Kernel? kernel = null,
+        CancellationToken cancellationToken = default)
+    {
+        var reducedMessages = await reducer.ReduceAsync(chatHistory, cancellationToken).ConfigureAwait(false);
+        var reducedHistory = reducedMessages is null ? chatHistory : new ChatHistory(reducedMessages);
+
+        return await service.GetChatMessageContentsAsync(reducedHistory, executionSettings, kernel, cancellationToken).ConfigureAwait(false);
+    }
+
+    /// <inheritdoc/>
+    public async IAsyncEnumerable<StreamingChatMessageContent> GetStreamingChatMessageContentsAsync(
+        ChatHistory chatHistory,
+        PromptExecutionSettings? executionSettings = null,
+        Kernel? kernel = null,
+        [EnumeratorCancellation] CancellationToken cancellationToken = default)
+    {
+        var reducedMessages = await reducer.ReduceAsync(chatHistory, cancellationToken).ConfigureAwait(false);
+        var history = reducedMessages is null ? chatHistory : new ChatHistory(reducedMessages);
+
+        var messages = service.GetStreamingChatMessageContentsAsync(history, executionSettings, kernel, cancellationToken);
+        await foreach (var message in messages)
+        {
+            yield return message;
+        }
+    }
+}