"""Resource reference model for MCP resource URIs."""
from __future__ import annotations
from typing import Any
from pydantic import BaseModel, Field
class ResourceRef(BaseModel):
"""Reference to a generated resource (file, URI, embedded data)."""
uri: str = Field(description="Resource URI (file://, s3://, http://, etc.)")
path: str | None = Field(None, description="Local filesystem path if applicable")
size: int | None = Field(None, ge=0, description="Size in bytes")
checksum: str | None = Field(None, description="Checksum (e.g., SHA256)")
driver: str | None = Field(None, description="GDAL driver name")
meta: dict[str, Any] = Field(default_factory=dict, description="Additional metadata")
