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#
# Copyright 2020 Ettus Research, a National Instruments Brand
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
"""
This module contains the logic to read configuration files from the
filesystem and parse configuration data from them. This data includes
anything from the serial number of the radio to the type of hardware
it identifies itself as.
"""
import configparser
from .sample_source import sinks, sources, NullSamples
class Config:
"""This class represents a configuration file for the usrp simulator.
This file should conform to the .ini format defined by the
configparser module
It should have a [sample.source] section and a [sample.sink] section.
Each section should have a 'class' key, which gives the name of the
Source/Sink class to instanitate (see the decorators in
sample_source.py). The other key value pairs in the section are
passed to the source/sink constructor as strings through **kwargs
"""
def __init__(self, source_gen, sink_gen):
self.source_gen = source_gen
self.sink_gen = sink_gen
@classmethod
def from_path(cls, path):
"""Parse a config .ini file from a path"""
parser = configparser.ConfigParser()
parser.read(path)
source_gen = Config._read_sample_section(parser['sample.source'], sources)
sink_gen = Config._read_sample_section(parser['sample.sink'], sinks)
return cls(source_gen, sink_gen)
@staticmethod
def _read_sample_section(section, lookup):
args = dict(section)
class_name = args.pop("class")
constructor = lookup[class_name]
def section_gen():
return constructor(**args)
return section_gen
@classmethod
def default(cls):
"""Return a default config"""
return cls(NullSamples, NullSamples)
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