chore: use DEBUG in dify_config instead of parsing raw system environment variable in place (#10437)

api/core/model_manager.py

@@ -1,8 +1,8 @@
 import logging
-import os
 from collections.abc import Callable, Generator, Iterable, Sequence
 from typing import IO, Any, Optional, Union, cast
 
+from configs import dify_config
 from core.entities.embedding_type import EmbeddingInputType
 from core.entities.provider_configuration import ProviderConfiguration, ProviderModelBundle
 from core.entities.provider_entities import ModelLoadBalancingConfiguration
@@ -473,7 +473,7 @@ class LBModelManager:
 
                 continue
 
-            if bool(os.environ.get("DEBUG", "False").lower() == "true"):
+            if dify_config.DEBUG:
                 logger.info(
                     f"Model LB\nid: {config.id}\nname:{config.name}\n"
                     f"tenant_id: {self._tenant_id}\nprovider: {self._provider}\n"