chore: Refactor loading.py to improve component instantiation and build process

src/backend/base/langflow/interface/initialize/loading.py

@@ -2,7 +2,7 @@ import inspect
 import json
 import os
 import warnings
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING, Any, Type
 
 import orjson
 from loguru import logger
@@ -12,9 +12,11 @@ from langflow.custom import Component, CustomComponent
 from langflow.custom.eval import eval_custom_component_code
 from langflow.schema import Data
 from langflow.schema.artifact import get_artifact_type, post_process_raw
+from langflow.services.deps import get_tracing_service
 
 if TYPE_CHECKING:
     from langflow.graph.vertex.base import Vertex
+    from langflow.services.tracing.service import TracingService
 
 
 async def instantiate_class(
@@ -34,23 +36,40 @@ async def instantiate_class(
     if not base_type:
         raise ValueError("No base type provided for vertex")
 
+    custom_component, build_results, artifacts = await build_component_and_get_results(
+        params=params,
+        vertex=vertex,
+        user_id=user_id,
+        tracing_service=get_tracing_service(),
+        fallback_to_env_vars=fallback_to_env_vars,
+        base_type=base_type,
+    )
+    return custom_component, build_results, artifacts
+
+
+async def build_component_and_get_results(
+    params: dict,
+    vertex: "Vertex",
+    user_id: str,
+    tracing_service: "TracingService",
+    fallback_to_env_vars: bool = False,
+    base_type: str = "component",
+):
     params_copy = params.copy()
     # Remove code from params
-    class_object = eval_custom_component_code(params_copy.pop("code"))
+    class_object: Type["CustomComponent" | "Component"] = eval_custom_component_code(params_copy.pop("code"))
-    custom_component = class_object(
+    custom_component: "CustomComponent" | "Component" = class_object(
-        user_id=user_id,
+        user_id=user_id, parameters=params_copy, vertex=vertex, tracing_service=tracing_service
-        parameters=params_copy,
-        vertex=vertex,
     )
     params_copy = update_params_with_load_from_db_fields(
         custom_component, params_copy, vertex.load_from_db_fields, fallback_to_env_vars
     )
     with warnings.catch_warnings():
         warnings.filterwarnings("ignore", category=PydanticDeprecatedSince20)
-        if isinstance(custom_component, Component):
+        if base_type == "custom_components":
-            return await build_component(params=params_copy, custom_component=custom_component, vertex=vertex)
-        elif isinstance(custom_component, CustomComponent):
             return await build_custom_component(params=params_copy, custom_component=custom_component)
+        elif base_type == "component":
+            return await build_component(params=params_copy, custom_component=custom_component)
         else:
             raise ValueError(f"Base type {base_type} not found.")
 
@@ -121,11 +140,10 @@ def update_params_with_load_from_db_fields(
 async def build_component(
     params: dict,
     custom_component: "Component",
-    vertex: "Vertex",
 ):
     # Now set the params as attributes of the custom_component
     custom_component.set_attributes(params)
-    build_results, artifacts = await custom_component.build_results(vertex)
+    build_results, artifacts = await custom_component.build_results()
 
     return custom_component, build_results, artifacts