初始提交

2026-08-26 18:06:02 +08:00
commit 5544788917
53 changed files with 4101 additions and 0 deletions
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+using MAF1.Agents.FileCity;
+using Microsoft.Agents.AI.Workflows;
+using Microsoft.Extensions.AI;
+
+namespace MAF1.Workflows;
+
+internal sealed class CityGateExecutor() : ChatProtocolExecutor(
+    "CityGate",
+    new ChatProtocolExecutorOptions { AutoSendTurnToken = false })
+{
+    protected override ProtocolBuilder ConfigureProtocol(ProtocolBuilder builder)
+    {
+        return base.ConfigureProtocol(builder)
+            .SendsMessage<ChatMessage>()
+            .SendsMessage<TurnToken>()
+            .YieldsOutput<string>();
+    }
+
+    protected override async ValueTask TakeTurnAsync(
+        List<ChatMessage> messages,
+        IWorkflowContext context,
+        bool? emitEvents,
+        CancellationToken cancellationToken)
+    {
+        string text = string.Join(
+            Environment.NewLine,
+            messages
+                .Where(message => !string.IsNullOrWhiteSpace(message.Text))
+                .Select(message => message.Text));
+
+        CityExtraction extraction = FileCityAgent.Parse(text);
+        if (!extraction.HasValidCities)
+        {
+            string reason = string.IsNullOrWhiteSpace(extraction.Reason)
+                ? "文件里没有可查询的城市。"
+                : extraction.Reason;
+            await context.YieldOutputAsync(
+                $"没有有效城市，工作流结束，不执行 WeatherAgent。{reason}",
+                cancellationToken);
+            return;
+        }
+
+        string prompt = $"请查询这些城市的天气：{string.Join("、", extraction.Cities)}";
+        await context.SendMessageAsync(new ChatMessage(ChatRole.User, prompt), cancellationToken: cancellationToken);
+        await context.SendMessageAsync(new TurnToken(emitEvents), cancellationToken: cancellationToken);
+    }
+}