def genImageDotHead(image_id):
"""
Generate a FITS image's .head file. The image file is first accessed to get the number
of HDUs (extansions). Then keywords mapping is retrieved from the instrument's ITT in
order to get a proper HDU data.
@return tuple of hdudata and total number of hdus in this image (primary + extansions)
"""
db = DB(host = settings.DATABASE_HOST,
user = settings.DATABASE_USER,
passwd = settings.DATABASE_PASSWORD,
db = settings.DATABASE_NAME)
# Beginning transaction
g = DBGeneric(db.con)
if type(image_id) != types.IntType:
raise ValueError, "first argument image_id must be an integer"
r = g.execute("""
SELECT im.path, im.name, ru.name, ins.itt, ins.name, im.dateobs, cha.name, im.flat,
im.airmass, im.equinox, im.object, im.exptime, im.mask, im.alpha, im.delta
FROM youpi_image AS im, youpi_instrument AS ins, youpi_channel AS cha, youpi_rel_ri AS ri, youpi_run AS ru
WHERE im.id=%d
AND im.instrument_id=ins.id
AND im.channel_id=cha.id
AND ri.image_id = im.id
AND ru.id = ri.run_id
""" % image_id)
if not r: raise LookupError, "no image found with ID: %s" % image_id
r = r[0]
fname = os.path.join(r[0], r[1] + '.fits')
if not os.path.exists(fname):
fname = re.sub(r'_\d+\.fits$', '.fits', fname)
hdulist = pyfits.open(fname)
hdulist.close()
# Get instrument translation table
itt = marshal.loads(zlib.decompress(base64.decodestring(r[3])))
try: run = r[2]
except: run = None
data = {
'YRUN' : run,
# 'YDETECTOR': ,
# 'YTELESCOP': ,
'YINSTRUMENT' : r[4],
'YDATEOBS' : r[5],
'YFILTER' : r[6],
'YFLAT' : r[7],
'YAIRMASS' : r[8],
'YEQUINOX' : r[9],
'YOBJECT' : r[10],
'YEXPTIME' : r[11],
'YMASK' : r[12],
'YRA' : r[13],
'YDEC' : r[14],
}
hdudata = {}
for k, v in data.iteritems():
try:
val = float(str(v))
except ValueError:
if isinstance(v, datetime.datetime):
v = v.isoformat()
val = "'%s'" % v
if itt[k].has_key('MAP'):
# Unmapped keyword are ignored since they are available in
# the image's header
hdudata[itt[k]['MAP']] = val
missing = []
# Keyword copy feature (+KEYWORD)
if itt.has_key('+COPY'):
# List of missing keywords (not found in src image)
for kw in itt['+COPY']:
data = None
# Search keyword in all extensions
for hdu in hdulist:
try: data = str(hdu.header[kw]).strip()
except KeyError:
# Keyword not found in this extension, continue
pass
if data: hdudata[kw] = data
else: missing.append(kw)
return (hdudata, len(hdulist), missing)
return fitsNoExt + FITSEXT
if __name__ == '__main__':
print "Running from the CLI"
# Connection object to MySQL database
try:
db = DB(host = DATABASE_HOST,
user = DATABASE_USER,
passwd = DATABASE_PASSWORD,
db = DATABASE_NAME)
# Beginning transaction
g = DBGeneric(db.con)
res = g.execute("SELECT id, username FROM auth_user LIMIT 1")
debug("Proceeding as user '%s'" % res[0][1])
user_id = res[0][0]
# Transaction begins here
g.begin()
run_stack_ingestion(g, sys.argv[1], user_id)
# Commits for that image
g.con.commit()
except Exception, e:
debug(e, FATAL)
g.con.rollback()
sys.exit(1)
sys.exit(0)
