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# SPDX-FileCopyrightText: Copyright 2022, Arm Limited and/or its affiliates.
# SPDX-License-Identifier: Apache-2.0
"""Backend config module."""
from __future__ import annotations
import platform
from enum import auto
from enum import Enum
from typing import cast
from mlia.core.common import AdviceCategory
class System(Enum):
"""Enum of system configurations (e.g. OS and architecture)."""
LINUX_AMD64 = ("Linux", "x86_64")
LINUX_AARCH64 = ("Linux", "aarch64")
WINDOWS_AMD64 = ("Windows", "AMD64")
WINDOWS_AARCH64 = ("Windows", "ARM64")
DARWIN_AARCH64 = ("Darwin", "arm64")
CURRENT = (platform.system(), platform.machine())
def __init__(
self, system: str = platform.system(), machine: str = platform.machine()
) -> None:
"""Set the system parameters (defaults to the current system)."""
self.system = system.lower()
self.machine = machine.lower()
def __eq__(self, other: object) -> bool:
"""
Compare two System instances for equality.
Raises a TypeError if the input is not a System.
"""
if isinstance(other, self.__class__):
return self.system == other.system and self.machine == other.machine
return False
def is_compatible(self) -> bool:
"""Check if this system is compatible with the current system."""
return self == self.CURRENT
class BackendType(Enum):
"""Define the type of the backend (builtin, wheel file etc)."""
BUILTIN = auto()
WHEEL = auto()
CUSTOM = auto()
class BackendConfiguration:
"""Base class for backend configurations."""
def __init__(
self,
supported_advice: list[AdviceCategory],
supported_systems: list[System] | None,
backend_type: BackendType,
) -> None:
"""Set up basic information about the backend."""
self.supported_advice = supported_advice
self.supported_systems = supported_systems
self.type = backend_type
def __str__(self) -> str:
"""List supported advice."""
return ", ".join(cast(str, adv.name).lower() for adv in self.supported_advice)
def is_supported(
self, advice: AdviceCategory | None = None, check_system: bool = False
) -> bool:
"""Check backend supports the current system and advice."""
is_system_supported = (
not self.supported_systems
or not check_system
or any(sys.is_compatible() for sys in self.supported_systems)
)
is_advice_supported = advice is None or advice in self.supported_advice
return is_system_supported and is_advice_supported
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