Feat: Alter flask to Quart for async API serving. (#11275)

### What problem does this PR solve?

#11277

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

agent/component/agent_with_tools.py

@@ -163,12 +163,7 @@ class Agent(LLM, ToolBase):
 
         downstreams = self._canvas.get_component(self._id)["downstream"] if self._canvas.get_component(self._id) else []
         ex = self.exception_handler()
-        output_structure=None
-        try:
-            output_structure=self._param.outputs['structured']
-        except Exception:
-            pass
-        if any([self._canvas.get_component_obj(cid).component_name.lower()=="message" for cid in downstreams]) and not output_structure and not (ex and ex["goto"]):
+        if any([self._canvas.get_component_obj(cid).component_name.lower()=="message" for cid in downstreams]) and not (ex and ex["goto"]):
             self.set_output("content", partial(self.stream_output_with_tools, prompt, msg, user_defined_prompt))
             return
 

agent/component/llm.py

@@ -249,7 +249,7 @@ class LLM(ComponentBase):
 
         downstreams = self._canvas.get_component(self._id)["downstream"] if self._canvas.get_component(self._id) else []
         ex = self.exception_handler()
-        if any([self._canvas.get_component_obj(cid).component_name.lower()=="message" for cid in downstreams]) and not output_structure and not (ex and ex["goto"]):
+        if any([self._canvas.get_component_obj(cid).component_name.lower()=="message" for cid in downstreams]) and not (ex and ex["goto"]):
             self.set_output("content", partial(self._stream_output, prompt, msg))
             return
 

agent/component/message.py

@@ -17,7 +17,6 @@ import json
 import os
 import random
 import re
-import pypandoc
 import logging
 import tempfile
 from functools import partial
@@ -30,6 +29,7 @@ from common.connection_utils import timeout
 from common.misc_utils import get_uuid
 from common import settings
 
+
 class MessageParam(ComponentParamBase):
     """
     Define the Message component parameters.
@@ -176,6 +176,10 @@ class Message(ComponentBase):
         return ""
 
     def _convert_content(self, content):
+        if not self._param.output_format:
+            return
+
+        import pypandoc
         doc_id = get_uuid()
         
         if self._param.output_format.lower() not in {"markdown", "html", "pdf", "docx"}: