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