feat: AIOps智能助手支持停止生成(AbortController中止流式,保留部分内容+已停止提示)

frontend/src/components/aiops/AIOpsAssistant.tsx

@@ -40,6 +40,7 @@ import {
   Loader2,
   CheckCircle2,
   Wifi,
+  Square,
 } from 'lucide-react';
 
 // LLM 提供商列表（OpenAI 兼容接口） // Logan.Li
@@ -133,6 +134,7 @@ interface Message {
   content: string;
   timestamp: string;
   isError?: boolean;
+  isStopped?: boolean;
 }
 
 // 格式化时间为 HH:MM // Logan.Li
@@ -145,6 +147,10 @@ export function AIOpsAssistant() {
   const [messages, setMessages] = useState<Message[]>([]);
   const [input, setInput] = useState('');
   const [isLoading, setIsLoading] = useState(false);
+  // 用于中止流式生成（点击"停止"按钮时 abort） // Logan.Li
+  const abortRef = useRef<AbortController | null>(null);
+  // 组件卸载时中止进行中的流式请求，避免 setState on unmounted // Logan.Li
+  useEffect(() => () => abortRef.current?.abort(), []);
   const [isConfigOpen, setIsConfigOpen] = useState(false);
   const [saving, setSaving] = useState(false);
   const [testing, setTesting] = useState(false);
@@ -251,6 +257,9 @@ export function AIOpsAssistant() {
     ];
     setMessages(newMessages);
     setIsLoading(true);
+    // 创建 AbortController 以支持\"停止生成\" // Logan.Li
+    const controller = new AbortController();
+    abortRef.current = controller;
     // 用于在收到第一个 chunk 前显示"思考中"占位
     let firstChunkArrived = false;
     try {
@@ -266,22 +275,38 @@ export function AIOpsAssistant() {
             m.id === assistantId ? { ...m, content: m.content + delta } : m,
           ),
         );
-      });
+      }, controller.signal);
     } catch (e) {
-      const errMsg = e instanceof Error ? e.message : '对话失败';
-      setMessages((prev) =>
-        prev.map((m) =>
-          m.id === assistantId
-            ? {
-                ...m,
-                content: firstChunkArrived ? m.content + `\n\n⚠️ ${errMsg}` : `⚠️ ${errMsg}`,
-                isError: !firstChunkArrived,
-              }
-            : m,
-        ),
-      );
+      // 用户主动中止：保留已生成的部分内容，不当作错误 // Logan.Li
+      if (controller.signal.aborted) {
+        setMessages((prev) =>
+          prev.map((m) =>
+            m.id === assistantId
+              ? {
+                  ...m,
+                  content: m.content || '（已停止生成）',
+                  isStopped: true,
+                }
+              : m,
+          ),
+        );
+      } else {
+        const errMsg = e instanceof Error ? e.message : '对话失败';
+        setMessages((prev) =>
+          prev.map((m) =>
+            m.id === assistantId
+              ? {
+                  ...m,
+                  content: firstChunkArrived ? m.content + `\n\n⚠️ ${errMsg}` : `⚠️ ${errMsg}`,
+                  isError: !firstChunkArrived,
+                }
+              : m,
+          ),
+        );
+      }
     } finally {
       setIsLoading(false);
+      abortRef.current = null;
     }
   };
 
@@ -485,7 +510,10 @@ export function AIOpsAssistant() {
                         <span className="inline-block w-2 h-4 ml-0.5 bg-purple-400 animate-pulse align-middle" />
                       )}
                     </div>
-                    <div className="text-xs text-slate-500 mt-1">{fmtTime(message.timestamp)}</div>
+                    <div className="text-xs text-slate-500 mt-1">
+                      {fmtTime(message.timestamp)}
+                      {message.isStopped && <span className="ml-2 text-slate-600">（已停止）</span>}
+                    </div>
                   </div>
                 </div>
                 );
@@ -508,6 +536,17 @@ export function AIOpsAssistant() {
               <Button className="bg-purple-600 hover:bg-purple-700" onClick={handleSend} disabled={isLoading || !input.trim()}>
                 <Send className="h-4 w-4" />
               </Button>
+              {/* 流式生成中显示\"停止生成\"按钮，中止当前请求 // Logan.Li */}
+              {isLoading && (
+                <Button
+                  variant="outline"
+                  className="border-red-500/40 text-red-400 hover:bg-red-500/10"
+                  onClick={() => abortRef.current?.abort()}
+                  title="停止生成"
+                >
+                  <Square className="h-4 w-4" />
+                </Button>
+              )}
             </div>
           </CardContent>
         </Card>