def __setattr__(self, name, value):
self.__dict__[name] = value
if (name == 'observation_number' and value is not None):
# if the observation_number is set, compute everything else
self._settimes_fromgps()
if (self.db is None):
return
try:
self._MWA_Setting = schedule.MWA_Setting(
self.observation_number, db=self.db)
except (psycopg2.InternalError, psycopg2.ProgrammingError), e:
logger.warning('Database error=%s' % (e.pgerror))
db.rollback()
if (self._MWA_Setting.stoptime == 0):
logger.error('MWA_Setting for %d has stoptime=0' %
(self.observation_number))
self.duration = self._MWA_Setting.stoptime - self._MWA_Setting.starttime
self.filename = self._MWA_Setting.obsname
try:
self.inttime = self._MWA_Setting.int_time
self.fine_channel = self._MWA_Setting.freq_res
except:
pass
try:
self._RFstream = schedule.RFstream(self.observation_number,
db=self.db)
except (psycopg2.InternalError, psycopg2.ProgrammingError), e:
logger.warning('Database error=%s' % (e.pgerror))
db.rollback()
def find_closest_observation(gpstime, maxdiff=10, db=db):
"""
observation_num=find_closest_observation(gpstime, maxdiff=10,db=db)
finds a scheduled MWA_Setting object at the time nearest the gpstime
that has a valid stoptime
will search up to +/-maxdiff seconds
"""
if schedule.MWA_Setting(int(gpstime), db=db).stoptime > 0:
logger.info(
'Found matching observation in MWA_Setting database at GPS time=%d\n'
% (gpstime))
return gpstime
for searchtime in xrange(
int(gpstime) - maxdiff,
int(gpstime) + maxdiff + 1):
if schedule.MWA_Setting(int(searchtime), db=db).stoptime > 0:
logger.info(
'Found matching observation for GPS time %d in MWA_Setting database at GPS time=%d (difference=%d s)\n'
% (gpstime, searchtime, searchtime - gpstime))
return searchtime
return None
observations=dbobj.execute('select starttime from mwa_setting where starttime>=%d and starttime<%d order by starttime' % (starttime, stoptime),
db=db)
except (psycopg2.InternalError, psycopg2.ProgrammingError) , e:
logger.warning('Database error=%s' % (e.pgerror))
db.rollback()
return None
logger.info('%d observations found' % (len(observations)))
starttimes=[]
stoptimes=[]
obsnames=[]
calibrators=[]
projects=[]
for observation in observations:
try:
s=schedule.MWA_Setting(observation[0], db=db)
except (psycopg2.InternalError, psycopg2.ProgrammingError) , e:
logger.warning('Database error=%s' % (e.pgerror))
db.rollback()
return None
starttimes.append(s.starttime)
stoptimes.append(s.stoptime)
obsnames.append(s.obsname)
projects.append(s.projectid)
try:
m=schedule.Schedule_Metadata(observation[0], db=db)
except (psycopg2.InternalError, psycopg2.ProgrammingError) , e:
logger.warning('Database error=%s' % (e.pgerror))
db.rollback()
return None