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# This file is part of obs_lsst. 

# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (http://www.lsst.org). 

# See the COPYRIGHT file at the top-level directory of this distribution 

# for details of code ownership. 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the LSST License Statement and 

# the GNU General Public License along with this program. If not, 

# see <http://www.lsstcorp.org/LegalNotices/>. 

# 

from . import LsstCamMapper, LsstCamMakeRawVisitInfo 

from .auxTel import AuxTelMapper 

from .ingest import LsstCamParseTask 

from .translators import LsstTS8Translator 

 

__all__ = ["Ts8Mapper", "Ts8ParseTask"] 

 

 

class Ts8MakeRawVisitInfo(LsstCamMakeRawVisitInfo): 

"""Make a VisitInfo from the FITS header of a raw image.""" 

metadataTranslator = LsstTS8Translator 

 

 

class Ts8Mapper(LsstCamMapper): 

"""The Mapper for the ts8 camera.""" 

translatorClass = LsstTS8Translator 

MakeRawVisitInfoClass = Ts8MakeRawVisitInfo 

_cameraName = "ts8" 

yamlFileList = ["ts8/ts8Mapper.yaml"] + \ 

list(AuxTelMapper.yamlFileList) + list(LsstCamMapper.yamlFileList) 

 

def _computeCcdExposureId(self, dataId): 

"""Compute the 64-bit (long) identifier for a CCD exposure. 

 

Parameters 

---------- 

dataId : `dict` 

Data identifier including ``dayObs`` and ``seqNum``. 

""" 

if len(dataId) == 0: 

return 0 # give up. Useful if reading files without a butler 

 

return super()._computeCcdExposureId(dataId) 

 

 

class Ts8ParseTask(LsstCamParseTask): 

"""Parser suitable for ts8 data. 

""" 

 

_mapperClass = Ts8Mapper 

_translatorClass = LsstTS8Translator 

 

def translate_testSeqNum(self, md): 

"""Translate the sequence number. 

 

Sometimes this is present, sometimes it is not. When it is, return it 

as an int. When it's not, provide a default value of 0 as an int. 

This function exists because currently the Gen2 butler's default 

value providing pathway has trouble with types. 

 

Parameters 

---------- 

md : `lsst.daf.base.PropertyList` or `~lsst.daf.base.PropertySet` 

Image metadata. 

 

Returns 

------- 

seqNum : `int` 

The seqNum, with a default value of ``0`` if required. 

""" 

try: 

seqNum = md.getScalar("SEQNUM") 

except KeyError: 

seqNum = 0 

return seqNum