Exceptions

This article describes how Runtime exceptions are handled in pFS

ModuleNotFoundError

This error extends the Python Exception class.

If, for any reason, a submodule is unable to access a reference to one of its dependencies, then it shall throw a ModuleNotFoundError, passing in a reference to itself and a string representation of the dependency.

The purpose for this Exception is, if a submodule is unable to access a dependency, it will raise ModuleNotFoundError and core will recognize the error, see what submodule it is coming from, and see what dependency it cannot access. Afterwards, core will attempt to rectify the issue by resetting the erroring submodules self.module variable.

submodules/telemetry

from helpers.exceptions import ModuleNotFoundError
...
raise ModuleNotFoundError(self, "aprs")

Class

helpers/exceptions.py

from submodules import Submodule

class ModuleNotFoundError(Exception):

    def __init__(self, submodule: Submodule, dependency: str):
        super().__init__(f"{submodule} cannot access {dependency}")

        self.submodule = submodule
        self.missing = dependency

    def get_submodule(self):
        return self.submodule

    def get_missing(self):
        return self.missing

    def __str__(self):
        return f"{self.submodule} cannot access {self.missing}"%