telescope_states.py 文件源码

def __init__(self, start, end, telescopes=None, sites=None, instrument_types=None):
        try:
            self.es = Elasticsearch([settings.ELASTICSEARCH_URL])
        except LocationValueError:
            logger.error('Could not find host. Make sure ELASTICSEARCH_URL is set.')
            raise ImproperlyConfigured('ELASTICSEARCH_URL')

        self.instrument_types = instrument_types
        self.available_telescopes = self._get_available_telescopes()

        sites = list({tk.site for tk in self.available_telescopes}) if not sites else sites
        telescopes = list({tk.telescope for tk in self.available_telescopes if tk.site in sites}) \
            if not telescopes else telescopes

        self.start = start.replace(tzinfo=timezone.utc).replace(microsecond=0)
        self.end = end.replace(tzinfo=timezone.utc).replace(microsecond=0)
        cached_event_data = cache.get('tel_event_data')
        if cached_event_data:
            self.event_data = cached_event_data
        else:
            self.event_data = self._get_es_data(sites, telescopes)
            cache.set('tel_event_data', self.event_data, 1800)