[Bug fix] Fix sqlite related issue with api server example (#857)

examples/api_server/api_server.py

@@ -1,3 +1,5 @@
+import logging
+
 from flask import Flask, jsonify, request
 
 from embedchain import App
@@ -5,11 +7,6 @@ from embedchain import App
 app = Flask(__name__)
 
 
-def initialize_chat_bot():
-    global chat_bot
-    chat_bot = App()
-
-
 @app.route("/add", methods=["POST"])
 def add():
     data = request.get_json()
@@ -17,9 +14,10 @@ def add():
     url_or_text = data.get("url_or_text")
     if data_type and url_or_text:
         try:
-            chat_bot.add(data_type, url_or_text)
+            App().add(url_or_text, data_type=data_type)
             return jsonify({"data": f"Added {data_type}: {url_or_text}"}), 200
         except Exception:
+            logging.exception(f"Failed to add {data_type=}: {url_or_text=}")
             return jsonify({"error": f"Failed to add {data_type}: {url_or_text}"}), 500
     return jsonify({"error": "Invalid request. Please provide 'data_type' and 'url_or_text' in JSON format."}), 400
 
@@ -30,9 +28,10 @@ def query():
     question = data.get("question")
     if question:
         try:
-            response = chat_bot.query(question)
+            response = App().query(question)
             return jsonify({"data": response}), 200
         except Exception:
+            logging.exception(f"Failed to query {question=}")
             return jsonify({"error": "An error occurred. Please try again!"}), 500
     return jsonify({"error": "Invalid request. Please provide 'question' in JSON format."}), 400
 
@@ -43,13 +42,13 @@ def chat():
     question = data.get("question")
     if question:
         try:
-            response = chat_bot.chat(question)
+            response = App().chat(question)
             return jsonify({"data": response}), 200
         except Exception:
+            logging.exception(f"Failed to chat {question=}")
             return jsonify({"error": "An error occurred. Please try again!"}), 500
     return jsonify({"error": "Invalid request. Please provide 'question' in JSON format."}), 400
 
 
 if __name__ == "__main__":
-    initialize_chat_bot()
     app.run(host="0.0.0.0", port=5000, debug=False)