PIOT-CDA-02-006: Create module - SystemMemUtilTask

[labbenchstudios]

Description

• Create a new Python module named SystemMemUtilTask with class name SystemMemUtilTask. This will be in the ./programmingtheiot/cda/system package.
  • NOTE: The downloaded code repository will a shell implementation of this module for you to work with, or you can create your own if you'd prefer.

Review the README

• Please see README.md for further information on, and use of, this content.
• License for embedded documentation and source codes: PIOT-DOC-LIC

Estimated effort may vary greatly

• The estimated level of effort for this exercise shown in the 'Estimate' section below is a very rough approximation. The actual level of effort may vary greatly depending on your development and test environment, experience with the requisite technologies, and many other factors.

Actions

NOTE: The implementation examples depicted here are only one way to implement the requirements listed. Your own implementation may vary of course.

• If not already part of the template class, import the psutil library and ConfigConst (in addition to logging and BaseSystemUtilTask):

import logging
import psutil

import programmingtheiot.common.ConfigConst as ConfigConst

from programmingtheiot.cda.system.BaseSystemUtilTask import BaseSystemUtilTask

• Create a class within the module named SystemMemUtilTask. This will extend BaseSystemUtilTask.
• In the constructor, add the following:
  super(SystemMemUtilTask, self).__init__(name = ConfigConst.MEM_UTIL_NAME, typeID = ConfigConst.MEM_UTIL_TYPE)
• BaseSystemUtilTask defines a template method named getTelemetryValue(self) -> float:. Implement this in SystemMemUtilTask as follows:
  return psutil.virtual_memory().percent

def __init__(self):
	super(SystemMemUtilTask, self).__init__(name = ConfigConst.MEM_UTIL_NAME, typeID = ConfigConst.MEM_UTIL_TYPE)
	
def getTelemetryValue(self) -> float:
	return psutil.virtual_memory().percent

Estimate

• Small

Tests

• Unit tests (in ./src/test/python/programmingtheiot/part01/unit)
  • Run ./system/SystemMemUtilTaskTest. The testGetTelemetryValue() unit test should pass.