from abc import ABC, abstractmethod
from typing import Optional


class SystemService(ABC):

	@abstractmethod
	def getIp(self) -> str:
		pass

	@abstractmethod
	def getCpuUtilization(self) -> float:
		pass

	@abstractmethod
	def getRamMbAvailable(self) -> float:
		pass

	@abstractmethod
	def getMaxRamMbAvailable(self) -> float:
		pass

	@abstractmethod
	def getCpuAvailable(self) -> int:
		pass

	@abstractmethod
	def getProcessCpu(self, pid: int = None) -> Optional[float]:
		pass

	@abstractmethod
	def getProcessRam(self, pid: int = None) -> Optional[float]:
		pass

	@abstractmethod
	def killProcess(self, pid: int = None):
		pass

	@abstractmethod
	def terminateProcess(self, pid: int = None):
		pass