Fix config for vector store (#1637)

mem0/vector_stores/chroma.py

@@ -28,13 +28,13 @@ class ChromaDB(VectorStoreBase):
         path
     ):
         """
-        Initialize the Qdrant vector store.
+        Initialize the Chromadb vector store.
 
         Args:
-            client (QdrantClient, optional): Existing Qdrant client instance.
-            host (str, optional): Host address for Qdrant server.
-            port (int, optional): Port for Qdrant server.
-            path (str, optional): Path for local Qdrant database.
+            client (chromadb.Client, optional): Existing chromadb client instance.
+            host (str, optional): Host address for chromadb server.
+            port (int, optional): Port for chromadb server.
+            path (str, optional): Path for local chromadb database.
         """
         if client:
             self.client = client

mem0/vector_stores/configs.py

@@ -1,7 +1,8 @@
 from typing import Optional
 
 from pydantic import BaseModel, Field, field_validator, model_validator
-
+from qdrant_client import QdrantClient
+from chromadb.api.client import Client as ChromaDbClient
 
 def create_default_config(provider: str):
     """Create a default configuration based on the provider."""
@@ -16,7 +17,7 @@ def create_default_config(provider: str):
 class QdrantConfig(BaseModel):
     collection_name: str = Field("mem0", description="Name of the collection")
     embedding_model_dims: Optional[int] = Field(1536, description="Dimensions of the embedding model")
-    client: Optional[str] = Field(None, description="Existing Qdrant client instance")
+    client: Optional[QdrantClient] = Field(None, description="Existing Qdrant client instance")
     host: Optional[str] = Field(None, description="Host address for Qdrant server")
     port: Optional[int] = Field(None, description="Port for Qdrant server")
     path: Optional[str] = Field("/tmp/qdrant", description="Path for local Qdrant database")
@@ -38,10 +39,13 @@ class QdrantConfig(BaseModel):
             )
         return values
 
+    class Config:
+        arbitrary_types_allowed = True
+
 
 class ChromaDbConfig(BaseModel):
     collection_name: str = Field("mem0", description="Default name for the collection")
-    client: Optional[str] = Field(None, description="Existing ChromaDB client instance")
+    client: Optional[ChromaDbClient] = Field(None, description="Existing ChromaDB client instance")
     path: Optional[str] = Field(None, description="Path to the database directory")
     host: Optional[str] = Field(None, description="Database connection remote host")
     port: Optional[str] = Field(None, description="Database connection remote port")
@@ -52,6 +56,9 @@ class ChromaDbConfig(BaseModel):
         if not path and not (host and port):
             raise ValueError("Either 'host' and 'port' or 'path' must be provided.")
         return values
+    
+    class Config:
+        arbitrary_types_allowed = True
 
 
 class VectorStoreConfig(BaseModel):