kopia lustrzana https://github.com/glidernet/ogn-python
55 wiersze
1.9 KiB
Python
55 wiersze
1.9 KiB
Python
import json
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from datetime import datetime, timedelta
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from sqlalchemy import func, case
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from sqlalchemy.sql.expression import label
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from app.model import Receiver, ReceiverCoverage
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from app import db
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def alchemyencoder(obj):
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"""JSON encoder function for SQLAlchemy special classes."""
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import decimal
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from datetime import datetime
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if isinstance(obj, datetime):
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return obj.strftime("%Y-%m-%d %H:%M")
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elif isinstance(obj, decimal.Decimal):
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return float(obj)
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def stations2_filtered_pl(start, end):
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last_10_minutes = datetime.utcnow() - timedelta(minutes=10)
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query = (
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db.session.query(
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Receiver.name.label("s"),
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label("lt", func.round(func.ST_Y(Receiver.location_wkt) * 10000) / 10000),
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label("lg", func.round(func.ST_X(Receiver.location_wkt) * 10000) / 10000),
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case([(Receiver.lastseen > last_10_minutes, "U")], else_="D").label("u"),
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Receiver.lastseen.label("ut"),
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label("v", Receiver.version + "." + Receiver.platform),
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)
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.order_by(Receiver.lastseen)
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.filter(db.or_(db.and_(start < Receiver.firstseen, end > Receiver.firstseen), db.and_(start < Receiver.lastseen, end > Receiver.lastseen)))
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)
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res = db.session.execute(query)
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stations = json.dumps({"stations": [dict(r) for r in res]}, default=alchemyencoder)
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return stations
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def max_tile_mgrs_pl(station, start, end, squares):
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query = (
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db.session.query(func.right(ReceiverCoverage.location_mgrs_short, 4), func.count(ReceiverCoverage.location_mgrs_short))
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.filter(db.and_(Receiver.id == ReceiverCoverage.receiver_id, Receiver.name == station))
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.filter(ReceiverCoverage.location_mgrs_short.like(squares + "%"))
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.group_by(func.right(ReceiverCoverage.location_mgrs_short, 4))
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)
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res = {"t": squares, "p": ["{}/{}".format(r[0], r[1]) for r in query.all()]}
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return json.dumps(res)
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