first commit

configs/vector_stores/cassandra.py

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+from typing import Any, Dict, List, Optional
+
+from pydantic import BaseModel, Field, model_validator
+
+
+class CassandraConfig(BaseModel):
+    """Configuration for Apache Cassandra vector database."""
+
+    contact_points: List[str] = Field(
+        ...,
+        description="List of contact point addresses (e.g., ['127.0.0.1', '127.0.0.2'])"
+    )
+    port: int = Field(9042, description="Cassandra port")
+    username: Optional[str] = Field(None, description="Database username")
+    password: Optional[str] = Field(None, description="Database password")
+    keyspace: str = Field("mem0", description="Keyspace name")
+    collection_name: str = Field("memories", description="Table name")
+    embedding_model_dims: int = Field(1536, description="Dimensions of the embedding model")
+    secure_connect_bundle: Optional[str] = Field(
+        None,
+        description="Path to secure connect bundle for DataStax Astra DB"
+    )
+    protocol_version: int = Field(4, description="CQL protocol version")
+    load_balancing_policy: Optional[Any] = Field(
+        None,
+        description="Custom load balancing policy object"
+    )
+
+    @model_validator(mode="before")
+    @classmethod
+    def check_auth(cls, values: Dict[str, Any]) -> Dict[str, Any]:
+        """Validate authentication parameters."""
+        username = values.get("username")
+        password = values.get("password")
+
+        # Both username and password must be provided together or not at all
+        if (username and not password) or (password and not username):
+            raise ValueError(
+                "Both 'username' and 'password' must be provided together for authentication"
+            )
+
+        return values
+
+    @model_validator(mode="before")
+    @classmethod
+    def check_connection_config(cls, values: Dict[str, Any]) -> Dict[str, Any]:
+        """Validate connection configuration."""
+        secure_connect_bundle = values.get("secure_connect_bundle")
+        contact_points = values.get("contact_points")
+
+        # Either secure_connect_bundle or contact_points must be provided
+        if not secure_connect_bundle and not contact_points:
+            raise ValueError(
+                "Either 'contact_points' or 'secure_connect_bundle' must be provided"
+            )
+
+        return values
+
+    @model_validator(mode="before")
+    @classmethod
+    def validate_extra_fields(cls, values: Dict[str, Any]) -> Dict[str, Any]:
+        """Validate that no extra fields are provided."""
+        allowed_fields = set(cls.model_fields.keys())
+        input_fields = set(values.keys())
+        extra_fields = input_fields - allowed_fields
+
+        if extra_fields:
+            raise ValueError(
+                f"Extra fields not allowed: {', '.join(extra_fields)}. "
+                f"Please input only the following fields: {', '.join(allowed_fields)}"
+            )
+
+        return values
+
+    class Config:
+        arbitrary_types_allowed = True
+