Add Python support.

slingshot_microservice/typing.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from typing import BinaryIO, Generator, Protocol, TypeAlias
+
+CaseVariable: TypeAlias = bool | int | str
+
+
+class ReadFileFn(Protocol):
+    def __call__(self, key: str, id: int) -> BinaryIO: ...
+
+
+class WriteFileFn(Protocol):
+    def __call__(self, key: str, id: int) -> BinaryIO: ...
+
+
+class ProcessFn(Protocol):
+    def __call__(
+        self,
+        request: int,
+        read_file: ReadFileFn,
+        write_file: WriteFileFn,
+    ) -> Generator[tuple[int, CaseVariable], None, None]: ...
+
+
+__all__ = [
+    "CaseVariable",
+    "ReadFileFn",
+    "WriteFileFn",
+    "ProcessFn",
+]