def __init__(self): self.log = logging.getLogger(__name__) self.parser = DSNParser() self.next_config_update = 0 self.next_data_update = 0 self.status_update_interval = 5 # Seconds self.config_update_interval = 600 # Seconds self.config_callback = None self.data_callback = None # Called for every new data update
class DSN(object):
def __init__(self):
self.log = logging.getLogger(__name__)
self.parser = DSNParser()
self.next_config_update = 0
self.next_data_update = 0
self.status_update_interval = 5 # Seconds
self.config_update_interval = 600 # Seconds
self.config_callback = None
self.data_callback = None # Called for every new data update
def update(self):
try:
now = time.time()
if self.next_config_update <= now:
self.next_config_update = now + self.config_update_interval
self.sites, self.spacecraft = self.parser.fetch_config()
if self.config_callback:
self.config_callback(self.sites, self.spacecraft)
self.log.info('Config processing complete')
now = time.time()
if self.next_data_update <= now:
self.next_data_update = (int)(now / self.status_update_interval + 1) * self.status_update_interval
new_data = self.parser.fetch_data()
if self.data_callback:
if not self.data_callback(new_data):
self.log.info('Status processing rejected')
else:
self.log.info('Status processing complete')
except ConnectionError, e:
self.log.warn("Unable to fetch data from DSN: %s" % e)
return
except LxmlError, e:
self.log.warn("Unable to parse data: %s", e)
return