ESBO-ETC/esbo_etc/classes/Config.py

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import xml.etree.ElementTree as eT
import numpy as np
import astropy.units as u
import os
import logging
from ..lib.helpers import error
from .Entry import Entry
from ..classes import target as tg
from ..classes import optical_component as oc
from ..classes import sensor as sensor
import difflib
import os.path
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from typing import Union
class Configuration(object):
"""
A Class to parse the XML configuration file.
Adapted from ExoSim (https://github.com/ExoSim/ExoSimPublic)
Attributes
----------
conf : Entry
Parsed configuration file as Entry-tree
"""
conf = None
def __init__(self, file="esbo-etc_defaults.xml"):
"""
Parse a XML configuration file.
Parameters
----------
file : str
configuration file to parse
"""
# Check if configuration file exists
if not os.path.exists(file):
error("Configuration file '" + file + "' doesn't exist.")
# Read configuration file
logging.info("Reading configuration from file '" + file + "'.")
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self.conf = self.__parser(eT.parse(file).getroot())
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self.__check_config()
self.__calc_metaoptions()
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def __parser(self, parent: eT.Element):
"""
Parse a XML element tree to an Entry-tree
Parameters
----------
parent : xml.etree.ElementTree.Element
The parent XML tree to be parsed
Returns
-------
obj : Entry
The parsed XML tree
"""
# Initialize empty Entry object
obj = Entry()
for child in parent:
# recursively parse children of child element
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parsed_child = self.__parser(child)
# parse attributes of child element
parsed_child.parse(child)
# Add or append the parsed child to the prepared Entry object
if hasattr(obj, child.tag):
if isinstance(getattr(obj, child.tag), list):
getattr(obj, child.tag).append(parsed_child)
else:
setattr(obj, child.tag, [getattr(obj, child.tag), parsed_child])
else:
setattr(obj, child.tag, parsed_child)
return obj
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def __calc_metaoptions(self):
"""
Calculate additional attributes e.g. the wavelength grid
"""
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self.__calc_metaoption_wl_delta()
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def __calc_metaoption_wl_delta(self):
"""
Calculate the wavelength grid used for the calculations.
"""
if hasattr(self.conf.common, "wl_delta"):
wl_delta = self.conf.common.wl_delta()
else:
wl_delta = self.conf.common.wl_min() / self.conf.common.res()
setattr(self.conf.common, 'wl_bins',
Entry(val=np.append(np.arange(self.conf.common.wl_min().to(u.nm).value,
self.conf.common.wl_max().to(u.nm).value, wl_delta.to(u.nm).value),
self.conf.common.wl_max().to(u.nm).value) << u.nm))
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def __check_config(self):
"""
Check and fix the parsed configuration file.
"""
# Check common
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if not hasattr(self.conf, "common"):
error("Configuration check: Missing required container 'common'.")
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if not hasattr(self.conf.common, "wl_min"):
error("Configuration check: common: Missing required container 'wl_min'.")
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mes = self.conf.common.wl_min.check_quantity("val", u.m)
mes is not None and error("Configuration check: common -> wl_min: " + mes)
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if not hasattr(self.conf.common, "wl_max"):
error("Configuration check: common: Missing required container 'wl_max'.")
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mes = self.conf.common.wl_max.check_quantity("val", u.m)
mes is not None and error("Configuration check: common -> wl_max: " + mes)
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if hasattr(self.conf.common, "wl_delta"):
mes = self.conf.common.wl_delta.check_quantity("val", u.m)
mes is not None and error("Configuration check: common -> wl_delta: " + mes)
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elif hasattr(self.conf.common, "res"):
mes = self.conf.common.res.check_quantity("val", u.dimensionless_unscaled)
mes is not None and error("Configuration check: common -> res: " + mes)
else:
error("Configuration check: common: Expected one of the containers 'wl_delta' or 'res' but got none.")
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if not hasattr(self.conf.common, "d_aperture"):
error("Configuration check: common: Missing required container 'd_aperture'.")
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mes = self.conf.common.d_aperture.check_quantity("val", u.m)
mes is not None and error("Configuration check: common -> d_aperture: " + mes)
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if not hasattr(self.conf.common, "psf"):
setattr(self.conf.common, "psf", Entry(val="Airy"))
else:
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if self.conf.common.psf().lower() != "airy":
mes = self.conf.common.psf.check_file("val")
mes is not None and error("Configuration check: common -> psf: " + mes)
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mes = self.conf.common.psf.check_float("osf")
mes is not None and error("Configuration check: common -> psf: " + mes)
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if hasattr(self.conf.common, "jitter_sigma"):
mes = self.conf.common.jitter_sigma.check_quantity("val", u.arcsec)
mes is not None and error("Configuration check: common -> jitter_sigma: " + mes)
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if not hasattr(self.conf.common, "output_path"):
setattr(self.conf.common, "output_path", Entry(val="."))
# Check astroscene
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if not hasattr(self.conf, "astroscene"):
error("Configuration check: Missing required container 'astroscene'.")
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if not hasattr(self.conf.astroscene, "target"):
error("Configuration check: astroscene: Missing required container 'target'.")
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if not hasattr(self.conf.astroscene.target, "type"):
error("Configuration check: astroscene -> target: Missing required parameter 'type'.")
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if self.conf.astroscene.target.type not in dir(tg):
# noinspection PyTypeChecker
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error("Configuration check: astroscene -> target: Target type '" + self.conf.astroscene.target.type +
"' does not exist. Did you mean '" + difflib.get_close_matches(self.conf.astroscene.target.type,
dir(tg), 1)[0] + "'?")
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mes = getattr(tg, self.conf.astroscene.target.type).check_config(self.conf.astroscene.target)
mes is not None and error("Configuration check: astroscene -> target: " + mes)
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mes = self.__check_optical_components(self.conf.astroscene)
mes is not None and error("Configuration check: astroscene -> " + mes)
# Check common_optics
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if hasattr(self.conf, "common_optics"):
mes = self.__check_optical_components(self.conf.common_optics)
mes is not None and error("Configuration check: common_optics -> " + mes)
# Check instrument
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if not hasattr(self.conf, "instrument"):
error("Configuration check: Missing required container 'instrument'.")
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mes = self.__check_optical_components(self.conf.instrument)
mes is not None and error("Configuration check: instrument -> " + mes)
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if not hasattr(self.conf.instrument, "sensor"):
error("Configuration check: instrument: Missing required container 'sensor'.")
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if not hasattr(self.conf.instrument.sensor, "type"):
error("Configuration check: instrument -> target: Missing required parameter 'type'.")
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if self.conf.instrument.sensor.type not in dir(sensor):
# noinspection PyTypeChecker
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error("Configuration check: sensor -> target: Sensor type '" + self.conf.instrument.sensor.type +
"' does not exist. Did you mean '" + difflib.get_close_matches(self.conf.instrument.sensor.type,
dir(sensor), 1)[0] + "'?")
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mes = getattr(sensor, self.conf.instrument.sensor.type).check_config(self.conf.instrument.sensor)
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mes is not None and error("Configuration check: instrument -> sensor -> " + mes)
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@staticmethod
def __check_optical_components(conf: Union[Entry, list]):
"""
Check list of optical components in the parsed configuration.
Parameters
----------
conf : Union[Entry, list]
The configuration entry or the list of configuration entries of the optical components to be checked.
Returns
-------
mes : Union[None, str]
The error message of the check. This will be None if the check was successful.
"""
if hasattr(conf, "optical_component"):
for component in (conf.optical_component if type(conf.optical_component) == list else
[conf.optical_component]):
if not hasattr(component, "type"):
return "optical_component: Missing required parameter 'type'."
if component.type not in dir(oc):
# noinspection PyTypeChecker
return "optical_component: optical component type '" + component.type + \
"' does not exist. Did you mean '" + \
difflib.get_close_matches(component.type, dir(tg), 1)[0] + "'?"
mes = getattr(oc, component.type).check_config(component)
if mes is not None:
print(component.type)
print(mes)
return "optical_component -> " + component.type + ": " + mes