def __init__(self, context):
self.params = context.params
self.status = context.status
self.raw_data = context.raw_data
# connect to weather station
self.ws = WeatherStation(context=context)
# check computer clock isn't earlier than last stored data
self.last_stored_time = self.raw_data.before(
datetime.max) or datetime.min
if datetime.utcnow() < self.last_stored_time:
raise ValueError('Computer time is earlier than last stored data')
# infer pointer of last stored data
saved_ptr = self.status.get('data', 'ptr')
if saved_ptr:
saved_ptr, sep, saved_date = saved_ptr.partition(',')
if saved_ptr and saved_date:
saved_ptr = int(saved_ptr, 16)
saved_date = WSDateTime.from_csv(saved_date)
saved_date = self.raw_data.nearest(saved_date)
while saved_date < self.last_stored_time:
saved_date = self.raw_data.after(saved_date +
SECOND) or datetime.max
saved_ptr = self.ws.inc_ptr(saved_ptr)
while saved_date > self.last_stored_time:
saved_date = self.raw_data.before(saved_date -
SECOND) or datetime.min
saved_ptr = self.ws.dec_ptr(saved_ptr)
else:
saved_ptr = None
self.last_stored_ptr = saved_ptr
self.check_fixed_block()
def __init__(self, context):
self.params = context.params
self.status = context.status
self.raw_data = context.raw_data
# connect to weather station
self.ws = WeatherStation(context=context)
# check computer clock isn't earlier than last stored data
self.last_stored_time = self.raw_data.before(datetime.max) or datetime.min
if datetime.utcnow() < self.last_stored_time:
raise ValueError('Computer time is earlier than last stored data')
# infer pointer of last stored data
if self.status.get('data', 'ptr'):
saved_ptr, saved_date = self.status.get('data', 'ptr').split(',')
saved_ptr = int(saved_ptr, 16)
saved_date = WSDateTime.from_csv(saved_date)
saved_date = self.raw_data.nearest(saved_date)
while saved_date < self.last_stored_time:
saved_date = self.raw_data.after(saved_date + SECOND)
saved_ptr = self.ws.inc_ptr(saved_ptr)
while saved_date > self.last_stored_time:
saved_date = self.raw_data.before(saved_date - SECOND)
saved_ptr = self.ws.dec_ptr(saved_ptr)
else:
saved_ptr = None
self.last_stored_ptr = saved_ptr
self.check_fixed_block()
def get_datetime(self, section, option, default=None):
result = self.get(section, option, default)
if result:
return WSDateTime.from_csv(result)
return result
def get_datetime(self, section, option, default=None):
result = self.get(section, option, default)
if result:
return WSDateTime.from_csv(result)
return result