feat(core): Upgrade pydantic to 2.x (#1428)

dbgpt/storage/vector_store/base.py

@@ -4,9 +4,9 @@ import math
 import time
 from abc import ABC, abstractmethod
 from concurrent.futures import ThreadPoolExecutor
-from typing import Any, List, Optional
+from typing import Any, Dict, List, Optional
 
-from dbgpt._private.pydantic import BaseModel, Field
+from dbgpt._private.pydantic import BaseModel, ConfigDict, Field, model_to_dict
 from dbgpt.core import Chunk, Embeddings
 from dbgpt.core.awel.flow import Parameter
 from dbgpt.storage.vector_store.filters import MetadataFilters
@@ -87,10 +87,7 @@ _COMMON_PARAMETERS = [
 class VectorStoreConfig(BaseModel):
     """Vector store config."""
 
-    class Config:
-        """Config for BaseModel."""
-
-        arbitrary_types_allowed = True
+    model_config = ConfigDict(arbitrary_types_allowed=True)
 
     name: str = Field(
         default="dbgpt_collection",
@@ -122,6 +119,10 @@ class VectorStoreConfig(BaseModel):
         "bigger than 1, please make sure your vector store is thread-safe.",
     )
 
+    def to_dict(self, **kwargs) -> Dict[str, Any]:
+        """Convert to dict."""
+        return model_to_dict(self, **kwargs)
+
 
 class VectorStoreBase(ABC):
     """Vector store base class."""