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aws-samples · Apr 25, 2024 · 10d6409 · 10d6409
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Showing 10 changed files with 118 additions and 25 deletions.
diff --git a/backend/app/routes/conversation.py b/backend/app/routes/conversation.py
@@ -12,9 +12,11 @@
     NewTitleInput,
     ProposedTitle,
     RelatedDocumentsOutput,
+    StopGenerateOutput,
 )
 from app.usecases.chat import (
     chat,
+    stop_generate,
     fetch_conversation,
     fetch_related_documents,
     propose_conversation_title,
@@ -40,6 +42,18 @@ def post_message(request: Request, chat_input: ChatInput):
     return output
 
 
+@router.post(
+    "/conversation/stop-generate", response_model=StopGenerateOutput
+)
+def post_stop_generate(request: Request, conversation_id: str):
+    """Stop generate chat message
+    NOTE: POST method is used to avoid query string length limit
+    """
+    current_user: User = request.state.current_user
+    output = stop_generate(user_id=current_user.id, conversation_id=conversation_id)
+    return output
+
+
 @router.post(
     "/conversation/related-documents", response_model=list[RelatedDocumentsOutput]
 )

diff --git a/backend/app/routes/schemas/conversation.py b/backend/app/routes/schemas/conversation.py
@@ -58,6 +58,11 @@ class ChatOutput(BaseSchema):
     create_time: float
 
 
+class StopGenerateOutput(BaseSchema):
+    stop_generate: bool
+    message: str | None
+
+
 class RelatedDocumentsOutput(BaseSchema):
     chunk_body: str
     content_type: Literal["s3", "url"]

diff --git a/backend/app/usecases/chat.py b/backend/app/usecases/chat.py
@@ -258,6 +258,8 @@ def insert_knowledge(
 def chat(user_id: str, chat_input: ChatInput) -> ChatOutput:
     user_msg_id, conversation, bot = prepare_conversation(user_id, chat_input)
 
+    # 1：DynamoDBの該当のレコードの中止フラグを折る
+
     message_map = conversation.message_map
     if bot and is_running_on_lambda():
         # NOTE: `is_running_on_lambda`is a workaround for local testing due to no postgres mock.
@@ -304,6 +306,9 @@ def chat(user_id: str, chat_input: ChatInput) -> ChatOutput:
     )
     conversation.message_map[assistant_msg_id] = message
 
+    # 3-2：DynamoDBの該当のレコードの中止フラグを確認し、中止フラグが立っていた場合は送信処理を中止。
+    # ユーザの入力のみ保存はする。
+
     # Append children to parent
     conversation.message_map[user_msg_id].children.append(assistant_msg_id)
     conversation.last_message_id = assistant_msg_id
@@ -347,6 +352,16 @@ def chat(user_id: str, chat_input: ChatInput) -> ChatOutput:
 
     return output
 
+def stop_generate(
+    user_id: str,
+    conversation_id: str,
+) -> bool:
+    try:
+        # 2：DynamoDBの該当のレコードに中止フラグを立てる
+        return True
+    except:
+        return False
+
 
 def propose_conversation_title(
     user_id: str,

diff --git a/backend/app/websocket.py b/backend/app/websocket.py
@@ -185,6 +185,9 @@ def process_chat_input(
             conversation.total_price += price
 
             store_conversation(user_id, conversation)
+
+            # 3-2：DynamoDBの該当のレコードの中止フラグを確認し、中止フラグが立っていた場合はそれ以上の推論処理を中止。
+            # 現在の状況でDynamoDBに保存する。
         else:
             continue
 

diff --git a/frontend/src/@types/conversation.d.ts b/frontend/src/@types/conversation.d.ts
@@ -45,6 +45,11 @@ export type PostMessageResponse = {
   message: MessageContent;
 };
 
+export type PostStopGenerateResponse = {
+  stopGenerate: boolean;
+  message?: string;
+};
+
 export type GetRelatedDocumentsRequest = {
   conversationId: string;
   message: MessageContent & {

diff --git a/frontend/src/components/ButtonSend.tsx b/frontend/src/components/ButtonSend.tsx
@@ -1,30 +1,45 @@
-import React from 'react';
-import { PiPaperPlaneRightFill, PiSpinnerGap } from 'react-icons/pi';
+import { PiPaperPlaneRightFill } from 'react-icons/pi';
 import { BaseProps } from '../@types/common';
 import { twMerge } from 'tailwind-merge';
+import { FaStop } from "react-icons/fa";
+import { ImSpinner8 } from "react-icons/im";
 
 type Props = BaseProps & {
   disabled?: boolean;
   loading?: boolean;
   onClick: () => void;
+  onClickLoading: () => void;
 };
 
 const ButtonSend: React.FC<Props> = (props) => {
+
   return (
-    <button
-      className={twMerge(
-        'flex items-center justify-center rounded-xl border border-aws-sea-blue bg-white p-2 text-xl text-aws-sea-blue',
-        props.disabled ? 'opacity-30' : '',
-        props.className
-      )}
-      onClick={props.onClick}
-      disabled={props.disabled || props.loading}>
-      {props.loading ? (
-        <PiSpinnerGap className="animate-spin" />
-      ) : (
-        <PiPaperPlaneRightFill />
-      )}
-    </button>
+    <>
+      {props.loading ?
+        <button
+          className={twMerge(
+            'flex items-center justify-center rounded-xl border border-aws-sea-blue bg-white p-2 text-xl text-aws-sea-blue',
+            props.className
+          )}
+          onClick={props.onClickLoading}>
+          <div className="flex items-center justify-center">
+            <ImSpinner8 className="animate-spin p-n1" />
+            <FaStop className=" absolute text-[0.5rem]" />
+          </div>
+        </button>
+        :
+        <button
+          className={twMerge(
+            'flex items-center justify-center rounded-xl border border-aws-sea-blue bg-white p-2 text-xl text-aws-sea-blue',
+            props.disabled ? 'opacity-30' : '',
+            props.className
+          )}
+          onClick={props.onClick}
+          disabled={props.disabled}>
+          <PiPaperPlaneRightFill />
+        </button>
+      }
+    </>
   );
 };
 

diff --git a/frontend/src/components/InputChatContent.tsx b/frontend/src/components/InputChatContent.tsx
@@ -28,6 +28,7 @@ type Props = BaseProps & {
   dndMode?: boolean;
   onSend: (content: string, base64EncodedImages?: string[]) => void;
   onRegenerate: () => void;
+  onStopGenerate: () => void;
 };
 
 const MAX_IMAGE_WIDTH = 800;
@@ -276,6 +277,7 @@ const InputChatContent: React.FC<Props> = (props) => {
             disabled={disabledSend || props.disabled}
             loading={postingMessage}
             onClick={sendContent}
+            onClickLoading={props.onStopGenerate}
           />
         </div>
         {base64EncodedImages.length > 0 && (

diff --git a/frontend/src/hooks/useChat.ts b/frontend/src/hooks/useChat.ts
@@ -462,6 +462,25 @@ const useChat = () => {
     }
   };
 
+  /**
+   * 生成停止
+   */
+  const postStopGenerate = () => {
+    conversationApi
+      .postStopGenerate(conversationId)
+      .then((res) => {
+        editMessage(
+          conversationId,
+          NEW_MESSAGE_ID.ASSISTANT,
+          res.data.message.content[0].body
+        );
+        resolve(res.data.message.content[0].body);
+      })
+      .catch((e) => {
+        reject(e);
+      });
+  }
+
   /**
    * 再生成
    * @param props content: 内容を上書きしたい場合に設定  messageId: 再生成対象のmessageId  botId: ボットの場合は設定する
@@ -584,6 +603,7 @@ const useChat = () => {
     messages,
     setCurrentMessageId,
     postChat,
+    postStopGenerate,
     regenerate,
     getPostedModel,
     // エラーのリトライ
@@ -601,9 +621,9 @@ const useChat = () => {
           content: params.content ?? latestMessage.content[0].body,
           bot: params.bot
             ? {
-                botId: params.bot.botId,
-                hasKnowledge: params.bot.hasKnowledge,
-              }
+              botId: params.bot.botId,
+              hasKnowledge: params.bot.hasKnowledge,
+            }
             : undefined,
         });
       } else {

diff --git a/frontend/src/hooks/useConversationApi.ts b/frontend/src/hooks/useConversationApi.ts
@@ -6,6 +6,7 @@ import {
   GetRelatedDocumentsResponse,
   PostMessageRequest,
   PostMessageResponse,
+  PostStopGenerateResponse,
 } from '../@types/conversation';
 import useHttp from './useHttp';
 
@@ -38,6 +39,11 @@ const useConversationApi = () => {
         ...input,
       });
     },
+    postStopGenerate: (conversationId: string) => {
+      return http.post<PostStopGenerateResponse>('conversation/stop-generate', {
+        conversationId,
+      });
+    },
     getRelatedDocuments: (input: GetRelatedDocumentsRequest) => {
       return http.post<GetRelatedDocumentsResponse>(
         'conversation/related-documents',

diff --git a/frontend/src/pages/ChatPage.tsx b/frontend/src/pages/ChatPage.tsx
@@ -35,6 +35,7 @@ const ChatPage: React.FC = () => {
   const {
     postingMessage,
     postChat,
+    postStopGenerate,
     messages,
     conversationId,
     setConversationId,
@@ -104,9 +105,9 @@ const ChatPage: React.FC = () => {
   const inputBotParams = useMemo(() => {
     return botId
       ? {
-          botId: botId,
-          hasKnowledge: bot?.hasKnowledge ?? false,
-        }
+        botId: botId,
+        hasKnowledge: bot?.hasKnowledge ?? false,
+      }
       : undefined;
   }, [bot?.hasKnowledge, botId]);
 
@@ -121,6 +122,13 @@ const ChatPage: React.FC = () => {
     [inputBotParams, postChat]
   );
 
+  const onStopGenerate = useCallback(
+    () => {
+      postStopGenerate()
+    },
+    [postStopGenerate]
+  );
+
   const onChangeCurrentMessageId = useCallback(
     (messageId: string) => {
       setCurrentMessageId(messageId);
@@ -303,9 +311,8 @@ const ChatPage: React.FC = () => {
           messages.map((message, idx) => (
             <div
               key={idx}
-              className={`${
-                message.role === 'assistant' ? 'bg-aws-squid-ink/5' : ''
-              }`}>
+              className={`${message.role === 'assistant' ? 'bg-aws-squid-ink/5' : ''
+                }`}>
               <ChatMessage
                 chatContent={message}
                 onChangeMessageId={onChangeCurrentMessageId}
@@ -358,6 +365,7 @@ const ChatPage: React.FC = () => {
           }
           onSend={onSend}
           onRegenerate={onRegenerate}
+          onStopGenerate={onStopGenerate}
         />
       </div>
     </div>