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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/>. 

# 

import os.path 

import re 

import lsst.log 

from . import LsstCamMapper, LsstCamMakeRawVisitInfo 

from .ingest import LsstCamParseTask 

from .translators import LsstLatissTranslator 

 

__all__ = ["LatissMapper", "LatissParseTask"] 

 

 

class LatissMakeRawVisitInfo(LsstCamMakeRawVisitInfo): 

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

metadataTranslator = LsstLatissTranslator 

 

 

class LatissMapper(LsstCamMapper): 

"""The Mapper for the LATISS camera.""" 

 

MakeRawVisitInfoClass = LatissMakeRawVisitInfo 

 

_cameraName = "latiss" 

yamlFileList = ["latiss/latissMapper.yaml"] + list(LsstCamMapper.yamlFileList) 

 

def _extractDetectorName(self, dataId): 

return f"{LsstLatissTranslator.DETECTOR_GROUP_NAME}_{LsstLatissTranslator.DETECTOR_NAME}" 

 

def _computeCcdExposureId(self, dataId): 

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

 

Parameters 

---------- 

dataId : `dict` 

Data identifier including dayObs and seqNum. 

 

Returns 

------- 

id : `int` 

Integer identifier for a CCD exposure. 

""" 

if len(dataId) == 0: 

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

 

if 'visit' in dataId: 

visit = dataId['visit'] 

else: 

if "controller" in dataId: 

controller = dataId["controller"] 

else: 

lsst.log.Log.getLogger("LsstLatissMapper").warn("Controller unknown, using 'C'") 

controller = "C" 

visit = LsstLatissTranslator.compute_exposure_id(dataId['dayObs'], dataId["seqNum"], 

controller) 

 

if "detector" in dataId: 

detector = dataId["detector"] 

if detector != 0: 

lsst.log.Log.getLogger("LatissMapper").warn("Got detector %d for LATISS when it should" 

" always be 0", detector) 

else: 

detector = 0 

 

return LsstLatissTranslator.compute_detector_exposure_id(visit, detector) 

 

 

class LatissParseTask(LsstCamParseTask): 

"""Parser suitable for LATISS raw data. 

""" 

 

_mapperClass = LatissMapper 

_translatorClass = LsstLatissTranslator 

 

def translate_seqNum(self, md): 

"""Return the sequence number. 

 

Parameters 

---------- 

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

Image metadata. 

 

Returns 

------- 

seqnum : `int` 

The sequence number identifier valid within a day. 

""" 

 

if "SEQNUM" in md: 

return md.getScalar("SEQNUM") 

# 

# Oh dear. Extract it from the filename 

# 

seqNum = 0 

for k in ("IMGNAME", "FILENAME"): 

if k not in md: 

continue 

name = md.getScalar(k) # e.g. AT-O-20180816-00008 

# Trim trailing extensions 

name = os.path.splitext(name)[0] 

 

# Want final digits 

mat = re.search(r"(\d+)$", name) 

if mat: 

seqNum = int(mat.group(1)) # 00008 

break 

 

if seqNum == 0: 

logger = lsst.log.Log.getLogger('obs.lsst.LatissParseTask') 

logger.warn( 

'Could not determine sequence number. Assuming %d ', seqNum) 

 

return seqNum