kopia lustrzana https://github.com/glidernet/ogn-python
111 wiersze
3.8 KiB
Python
111 wiersze
3.8 KiB
Python
from datetime import datetime, timedelta, timezone, date
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from sqlalchemy import func, and_, between, case
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from ogn_python.model import AircraftBeacon, Device, Receiver
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from ogn_python import db
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def utc_to_local(utc_dt):
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return utc_dt.replace(tzinfo=timezone.utc).astimezone(tz=None)
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def encode(address):
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return 'xx' + address
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def decode(code):
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return code[2:9]
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def rec():
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last_10_minutes = datetime.utcnow() - timedelta(minutes=10)
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receiver_query = db.session.query(Receiver,
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case([(Receiver.lastseen > last_10_minutes, True)],
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else_=False).label('is_online')) \
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.order_by(Receiver.name)
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lines = list()
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lines.append('<?xml version="1.0" encoding="UTF-8"?>')
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lines.append('<markers>')
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lines.append('<m e="0"/>')
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for [receiver, is_online] in receiver_query.all():
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lines.append('<m a="{0}" b="{1:.7f}" c="{2:.7f}" d="{3:1d}"/>'
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.format(receiver.name, receiver.location.latitude, receiver.location.longitude, is_online))
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lines.append('</markers>')
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xml = '\n'.join(lines)
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return xml
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def lxml(show_offline=False, lat_max=90, lat_min=-90, lon_max=180, lon_min=-180):
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if show_offline:
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observation_start = date.today()
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else:
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observation_start = datetime.utcnow() - timedelta(minutes=5)
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position_query = db.session.query(AircraftBeacon, Device) \
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.filter(and_(between(func.ST_Y(AircraftBeacon.location_wkt), lat_min, lat_max),
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between(func.ST_X(AircraftBeacon.location_wkt), lon_min, lon_max))) \
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.filter(Device.lastseen > observation_start) \
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.filter(Device.lastseen == AircraftBeacon.timestamp) \
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.filter(Device.id == AircraftBeacon.device_id) \
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.order_by(AircraftBeacon.timestamp)
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lines = list()
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lines.append('<?xml version="1.0" encoding="UTF-8"?>')
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lines.append('<markers>')
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for [aircraft_beacon, device] in position_query.all():
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code = encode(device.address)
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if len(device.infos) > 0:
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device_info = device.infos[0]
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if device_info and (not device_info.tracked or not device_info.identified):
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continue
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if not device_info.competition:
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competition = device_info.registration[-2:]
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else:
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competition = device_info.competition
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if not device_info.registration:
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registration = '???'
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else:
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registration = device_info.registration
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address = device.address
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else:
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device_info = None
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competition = ('_' + code[-2:]).lower()
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registration = code
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address = 0
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elapsed_time = datetime.utcnow() - aircraft_beacon.timestamp
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elapsed_seconds = int(elapsed_time.total_seconds())
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lines.append(' <m a="{0:.7f},{1:.7f},{2},{3},{4},{5},{6},{7},{8},{9},{10},{11},{12},{13}"/>'
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.format(aircraft_beacon.location.latitude,
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aircraft_beacon.location.longitude,
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competition,
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registration,
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int(aircraft_beacon.altitude),
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utc_to_local(aircraft_beacon.timestamp).strftime("%H:%M:%S"),
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elapsed_seconds,
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int(aircraft_beacon.track),
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int(aircraft_beacon.ground_speed),
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int(aircraft_beacon.climb_rate * 10) / 10,
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aircraft_beacon.aircraft_type,
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aircraft_beacon.receiver_name,
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address,
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code))
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lines.append('</markers>')
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xml = '\n'.join(lines)
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return xml
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