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122 lines
4.9 KiB
Python
122 lines
4.9 KiB
Python
import logging
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from datetime import datetime, timezone, timedelta
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from threading import Thread, Event
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import pytz
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import requests
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from core.constants import HTTP_HEADERS
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from solarconditionsproviders.ionosonde_utils import compute_band_states
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from solarconditionsproviders.solar_conditions_provider import SolarConditionsProvider
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POLL_INTERVAL = 900 # 15 minutes
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KC2G_URL = "https://prop.kc2g.com/api/stations.json"
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HISTORY_HOURS = 24
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class KC2GProp(SolarConditionsProvider):
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"""Solar conditions provider using ionosonde data from prop.kc2g.com. The API returns only the latest reading per
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station, so this provider polls every 15 minutes and accumulates a 24-hour time series by merging each new reading
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into the persisted ionosonde_data, producing the same data structure as GIROIonosonde.
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Designed to run alongside GIROIonosonde even though they produce similar data. KC2G is more reliable and is always
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online, but has fewer stations and does not provide LUF data."""
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def __init__(self, provider_config):
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super().__init__(provider_config)
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self._thread = None
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self._stop_event = Event()
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def start(self):
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logging.info(f"Set up query of KC2G ionosonde data API every {POLL_INTERVAL} seconds.")
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self._thread = Thread(target=self._run, daemon=True)
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self._thread.start()
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def stop(self):
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self._stop_event.set()
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def _run(self):
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while True:
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self._poll()
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if self._stop_event.wait(timeout=POLL_INTERVAL):
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break
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def _poll(self):
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try:
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logging.debug("Polling KC2G ionosonde data...")
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response = requests.get(KC2G_URL, headers=HTTP_HEADERS, timeout=(5, 30))
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if response.status_code != 200:
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logging.warning(f"KC2G ionosonde API returned HTTP {response.status_code}")
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return
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now = datetime.now(timezone.utc)
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cutoff_ts = (now - timedelta(hours=HISTORY_HOURS)).timestamp()
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# Start from existing ionosonde_data so the accumulated time series survives across polls and restarts and
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# stations provided only by GIROIonosonde are not discarded
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ionosonde_data = dict(self._solar_conditions.ionosonde_data or {})
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updated_count = 0
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for reading in response.json():
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station = reading.get("station", {})
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ursi = station.get("code")
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name = station.get("name")
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if not ursi or not name:
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continue
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time_str = reading.get("time")
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if not time_str:
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continue
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try:
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ts = datetime.fromisoformat(time_str)
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if ts.tzinfo is None:
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ts = ts.replace(tzinfo=timezone.utc)
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ts_float = ts.timestamp()
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except ValueError:
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continue
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# Skip readings outside our history window (some stations have months-old data)
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if ts_float < cutoff_ts:
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continue
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fof2_val = reading.get("fof2")
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muf_val = reading.get("mufd")
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if fof2_val is None and muf_val is None:
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continue
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# Merge this reading into the existing time series for the station.
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existing = ionosonde_data.get(ursi, {})
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fof2_dict = dict(existing.get("fof2") or {})
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muf_dict = dict(existing.get("muf") or {})
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# LUF is not available from KC2G; carry forward whatever GIRO has written.
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luf_dict = {float(t): v for t, v in (existing.get("luf") or {}).items()}
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fof2_dict[ts_float] = fof2_val
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muf_dict[ts_float] = muf_val
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# Trim all series to the 24-hour window.
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fof2_dict = {t: v for t, v in fof2_dict.items() if t >= cutoff_ts}
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muf_dict = {t: v for t, v in muf_dict.items() if t >= cutoff_ts}
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luf_dict = {t: v for t, v in luf_dict.items() if t >= cutoff_ts}
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band_states = compute_band_states(fof2_dict, muf_dict, luf_dict)
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ionosonde_data[ursi] = {
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"ursi": ursi,
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"name": name,
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"fof2": fof2_dict or None,
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"muf": muf_dict or None,
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"luf": luf_dict or None,
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"band_states": band_states,
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}
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updated_count += 1
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self.update_data({"ionosonde_data": ionosonde_data})
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self.status = "OK"
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self.last_update_time = datetime.now(pytz.UTC)
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logging.debug(f"Updated KC2G ionosonde data for {updated_count} stations.")
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except Exception:
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self.status = "Error"
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logging.exception("Exception in KC2G ionosonde data provider")
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self._stop_event.wait(timeout=1)
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