feat: err handling /stream

application/api/answer/routes.py

@@ -9,13 +9,11 @@ import traceback
 from pymongo import MongoClient
 from bson.objectid import ObjectId
 
-
 from application.core.settings import settings
 from application.llm.llm_creator import LLMCreator
 from application.retriever.retriever_creator import RetrieverCreator
 from application.error import bad_request
 
-
 logger = logging.getLogger(__name__)
 
 mongo = MongoClient(settings.MONGO_URI)
@@ -75,8 +73,10 @@ def run_async_chain(chain, question, chat_history):
 
 def get_data_from_api_key(api_key):
     data = api_key_collection.find_one({"key": api_key})
+    
+    # # Raise custom exception if the API key is not found
     if data is None:
-        return bad_request(401, "Invalid API key")
+        raise Exception("API key is invalid", 401)
     return data
 
 
@@ -128,10 +128,10 @@ def save_conversation(conversation_id, question, response, source_log_docs, llm)
                 "content": "Summarise following conversation in no more than 3 "
                 "words, respond ONLY with the summary, use the same "
                 "language as the system \n\nUser: "
-                + question
-                + "\n\n"
-                + "AI: "
-                + response,
+                +question
+                +"\n\n"
+                +"AI: "
+                +response,
             },
             {
                 "role": "user",
@@ -200,6 +200,7 @@ def complete_stream(question, retriever, conversation_id, user_api_key):
 
 @answer.route("/stream", methods=["POST"])
 def stream():
+   try:
     data = request.get_json()
     # get parameter from url question
     question = data["question"]
@@ -273,6 +274,22 @@ def stream():
         ),
         mimetype="text/event-stream",
     )
+   except Exception as 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(),
+        status=status_code,
+        mimetype="text/event-stream",
+    )
 
 
 @answer.route("/api/answer", methods=["POST"])