fix: add reducers to raise error, handle complete_stream()

application/api/answer/routes.py

@@ -173,30 +173,33 @@ def get_prompt(prompt_id):
 
 def complete_stream(question, retriever, conversation_id, user_api_key):
 
-    response_full = ""
-    source_log_docs = []
-    answer = retriever.gen()
-    for line in answer:
-        if "answer" in line:
-            response_full += str(line["answer"])
-            data = json.dumps(line)
-            yield f"data: {data}\n\n"
-        elif "source" in line:
-            source_log_docs.append(line["source"])
-
-    llm = LLMCreator.create_llm(
-        settings.LLM_NAME, api_key=settings.API_KEY, user_api_key=user_api_key
-    )
-    conversation_id = save_conversation(
-        conversation_id, question, response_full, source_log_docs, llm
-    )
-
-    # send data.type = "end" to indicate that the stream has ended as json
-    data = json.dumps({"type": "id", "id": str(conversation_id)})
-    yield f"data: {data}\n\n"
-    data = json.dumps({"type": "end"})
-    yield f"data: {data}\n\n"
+    try:
+        response_full = ""
+        source_log_docs = []
+        answer = retriever.gen()
+        for line in answer:
+            if "answer" in line:
+                response_full += str(line["answer"])
+                data = json.dumps(line)
+                yield f"data: {data}\n\n"
+            elif "source" in line:
+                source_log_docs.append(line["source"])
 
+            llm = LLMCreator.create_llm(
+                settings.LLM_NAME, api_key=settings.API_KEY, user_api_key=user_api_key
+               )
+            conversation_id = save_conversation(
+                conversation_id, question, response_full, source_log_docs, llm
+            )
+           
+            # send data.type = "end" to indicate that the stream has ended as json
+            data = json.dumps({"type": "id", "id": str(conversation_id)})
+            yield f"data: {data}\n\n"
+            data = json.dumps({"type": "end"})
+            yield f"data: {data}\n\n"
+    except Exception:
+        data = json.dumps({"type": "error","error":"Please try again later. We apologize for any inconvenience."})
+        yield f"data: {data}\n\n"
 
 @answer.route("/stream", methods=["POST"])
 def stream():
@@ -274,23 +277,29 @@ def stream():
         ),
         mimetype="text/event-stream",
     )
+    
+   except ValueError:
+       message = "Malformed request body"
+       return Response(
+        error_stream_generate(message),
+        status=400,
+        mimetype="text/event-stream",
+    )
    except Exception as e:
+        print("err",str(e))
         message = e.args[0]
         status_code = 400
         # # Custom exceptions with two arguments, index 1 as status code
         if(len(e.args) >= 2):
             status_code = e.args[1]
-
-        def error_stream_generate():
-            data = json.dumps({"type": "error", "error":message})
-            yield f"data: {data}\n\n"
-
         return Response(
-        error_stream_generate(),
+        error_stream_generate(message),
         status=status_code,
         mimetype="text/event-stream",
     )
-
+def error_stream_generate(err_response):
+            data = json.dumps({"type": "error", "error":err_response})
+            yield f"data: {data}\n\n"
 
 @answer.route("/api/answer", methods=["POST"])
 def api_answer():

frontend/src/conversation/conversationSlice.ts

@@ -68,6 +68,15 @@ export const fetchAnswer = createAsyncThunk<Answer, { question: string }>(
                   query: { conversationId: data.id },
                 }),
               );
+            } else if (data.type === 'error') {
+              // set status to 'failed'
+              dispatch(conversationSlice.actions.setStatus('failed'));
+              dispatch(
+                conversationSlice.actions.raiseError({
+                  index: state.conversation.queries.length - 1,
+                  message: data.error,
+                }),
+              );
             } else {
               const result = data.answer;
               dispatch(
@@ -191,6 +200,13 @@ export const conversationSlice = createSlice({
     setStatus(state, action: PayloadAction<Status>) {
       state.status = action.payload;
     },
+    raiseError(
+      state,
+      action: PayloadAction<{ index: number; message: string }>,
+    ) {
+      const { index, message } = action.payload;
+      state.queries[index].error = message;
+    },
   },
   extraReducers(builder) {
     builder