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