109 lines
3.3 KiB
Python
109 lines
3.3 KiB
Python
from datetime import timedelta
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import json
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import urllib2
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from orbit import satellite
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from django.conf import settings
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from django.utils.timezone import now
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from network.base.models import Satellite, Tle, Mode, Transmitter, Observation
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from network.celery import app
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@app.task
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def update_all_tle():
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"""Task to update all satellite TLEs"""
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satellites = Satellite.objects.exclude(manual_tle=True)
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for obj in satellites:
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try:
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sat = satellite(obj.norad_cat_id)
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except:
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continue
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# Get latest satellite TLE and check if it changed
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tle = sat.tle()
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try:
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latest_tle = obj.latest_tle.tle1
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except:
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pass
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if latest_tle == tle[1]:
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continue
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Tle.objects.create(tle0=tle[0], tle1=tle[1], tle2=tle[2], satellite=obj)
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@app.task
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def fetch_data():
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"""Task to fetch all data from DB"""
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apiurl = settings.DB_API_ENDPOINT
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modes_url = "{0}modes".format(apiurl)
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satellites_url = "{0}satellites".format(apiurl)
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transmitters_url = "{0}transmitters".format(apiurl)
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try:
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modes = urllib2.urlopen(modes_url).read()
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satellites = urllib2.urlopen(satellites_url).read()
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transmitters = urllib2.urlopen(transmitters_url).read()
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except:
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raise Exception('API is unreachable')
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# Fetch Modes
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for mode in json.loads(modes):
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id = mode['id']
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try:
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existing_mode = Mode.objects.get(id=id)
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existing_mode.__dict__.update(mode)
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existing_mode.save()
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except Mode.DoesNotExist:
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Mode.objects.create(**mode)
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# Fetch Satellites
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for sat in json.loads(satellites):
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norad_cat_id = sat['norad_cat_id']
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try:
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existing_satellite = Satellite.objects.get(norad_cat_id=norad_cat_id)
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existing_satellite.__dict__.update(sat)
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existing_satellite.save()
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except Satellite.DoesNotExist:
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Satellite.objects.create(**sat)
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# Fetch Transmitters
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for transmitter in json.loads(transmitters):
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norad_cat_id = transmitter['norad_cat_id']
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uuid = transmitter['uuid']
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mode_id = transmitter['mode_id']
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try:
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sat = Satellite.objects.get(norad_cat_id=norad_cat_id)
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except Satellite.DoesNotExist:
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continue
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transmitter.pop('norad_cat_id')
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try:
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mode = Mode.objects.get(id=mode_id)
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except Mode.DoesNotExist:
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mode = None
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try:
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existing_transmitter = Transmitter.objects.get(uuid=uuid)
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existing_transmitter.__dict__.update(transmitter)
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existing_transmitter.satellite = sat
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existing_transmitter.save()
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except Transmitter.DoesNotExist:
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new_transmitter = Transmitter.objects.create(**transmitter)
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new_transmitter.satellite = sat
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new_transmitter.mode = mode
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new_transmitter.save()
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@app.task
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def clean_observations():
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"""Task to clean up old observations that lack actual data."""
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if settings.ENVIRONMENT == 'stage':
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threshold = now() - timedelta(days=int(settings.OBSERVATION_OLD_RANGE))
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observations = Observation.objects.filter(end__lt=threshold)
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for obs in observations:
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if not obs.is_verified:
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obs.delete()
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