add abstract method in header processor

src/maggma/api/resource/core.py

@@ -6,6 +6,7 @@
 from pydantic import BaseModel
 from starlette.responses import RedirectResponse
 
+from maggma.api.query_operator import QueryOperator
 from maggma.api.utils import STORE_PARAMS, api_sanitize
 from maggma.utils import dynamic_import
 
@@ -106,3 +107,9 @@ def process_header(self, response: Response, request: Request):
         It can use data in the upstream request to generate the header.
         (https://fastapi.tiangolo.com/advanced/response-headers/#use-a-response-parameter).
         """
+
+    @abstractmethod
+    def configure_query_on_request(self, request: Request, query_operator: QueryOperator) -> STORE_PARAMS:
+        """
+        This method takes in a FastAPI Request object and returns a query to be used in the store.
+        """