def fetch(
self,
station: str = None,
lat: float = None,
lon: float = None,
timeout: int = 10,
) -> str:
"""
Fetches a report string from the service
"""
if station:
valid_station(station)
elif lat is None or lon is None:
raise ValueError("No valid fetch parameters")
try:
url, params = self._make_url(station, lat, lon)
if self.method.lower() == "post":
resp = requests.post(url,
params=params,
data=self._post_data(station))
else:
resp = requests.get(url, params)
if resp.status_code != 200:
raise SourceError(
f"{self.__class__.__name__} server returned {resp.status_code}"
)
except requests.exceptions.ConnectionError:
raise ConnectionError(
f"Unable to connect to {self.__class__.__name__} server")
report = self._extract(resp.text, station)
# This split join replaces all *whitespace elements with a single space
if isinstance(report, list):
return dedupe(" ".join(r.split()) for r in report)
return " ".join(report.split())
def __init__(self, icao: str):
# Raises a BadStation error if needed
station.valid_station(icao)
self.station = icao
self.station_info = Station.from_icao(icao)
self.service = service.get_service(icao, self.station_info.country)(
self.__class__.__name__.lower())
def parse(station: str, report: str, issued: date = None) -> Tuple[MetarData, Units]:
"""Returns MetarData and Units dataclasses with parsed data and their associated units"""
valid_station(station)
if not report:
return None, None
parser = parse_na if uses_na_format(station[:2]) else parse_in
return parser(report, issued)
def fetch(
self,
station: str = None,
lat: float = None,
lon: float = None,
timeout: int = 10,
) -> str:
"""
Fetches a report string from the service
"""
if station:
valid_station(station)
elif lat is None or lon is None:
raise ValueError("No valid fetch parameters")
try:
url, params = self._make_url(station, lat, lon)
if self.method.lower() == "post":
resp = httpx.post(url,
params=params,
data=self._post_data(station),
timeout=timeout)
else:
resp = httpx.get(url, params=params, timeout=timeout)
if resp.status_code != 200:
raise SourceError(
f"{self.__class__.__name__} server returned {resp.status_code}"
)
except (httpx.ConnectTimeout, httpx.ReadTimeout):
raise TimeoutError(
f"Timeout from {self.__class__.__name__} server")
except gaierror:
raise ConnectionError(
f"Unable to connect to {self.__class__.__name__} server")
report = self._extract(resp.text, station)
return self._clean_report(report)
def parse(station: str, report: str) -> (MetarData, Units):
"""
Returns MetarData and Units dataclasses with parsed data and their associated units
"""
valid_station(station)
if not report:
return None, None
return parse_na(report) if uses_na_format(station[:2]) else parse_in(report)
def parse(station: str, report: str) -> (TafData, Units):
"""
Returns TafData and Units dataclasses with parsed data and their associated units
"""
if not report:
return None, None
valid_station(station)
while len(report) > 3 and report[:4] in ("TAF ", "AMD ", "COR "):
report = report[4:]
retwx = {
"end_time": None,
"raw": report,
"remarks": None,
"start_time": None
}
report = _core.sanitize_report_string(report)
_, station, time = _core.get_station_and_time(report[:20].split())
retwx["station"] = station
retwx["time"] = _core.make_timestamp(time)
report = report.replace(station, "")
if time:
report = report.replace(time, "").strip()
if uses_na_format(station):
use_na = True
units = Units(**NA_UNITS)
else:
use_na = False
units = Units(**IN_UNITS)
# Find and remove remarks
report, retwx["remarks"] = _core.get_taf_remarks(report)
# Split and parse each line
lines = _core.split_taf(report)
parsed_lines = parse_lines(lines, units, use_na)
# Perform additional info extract and corrections
if parsed_lines:
parsed_lines[-1]["other"], retwx["max_temp"], retwx[
"min_temp"] = _core.get_temp_min_and_max(parsed_lines[-1]["other"])
if not (retwx["max_temp"] or retwx["min_temp"]):
parsed_lines[0]["other"], retwx["max_temp"], retwx[
"min_temp"] = _core.get_temp_min_and_max(
parsed_lines[0]["other"])
# Set start and end times based on the first line
start, end = parsed_lines[0]["start_time"], parsed_lines[0]["end_time"]
parsed_lines[0]["end_time"] = None
retwx["start_time"], retwx["end_time"] = start, end
parsed_lines = _core.find_missing_taf_times(parsed_lines, start, end)
parsed_lines = _core.get_taf_flight_rules(parsed_lines)
# Extract Oceania-specific data
if retwx["station"][0] == "A":
parsed_lines[-1]["other"], retwx["alts"], retwx[
"temps"] = _core.get_oceania_temp_and_alt(
parsed_lines[-1]["other"])
# Convert to dataclass
retwx["forecast"] = [TafLineData(**line) for line in parsed_lines]
return TafData(**retwx), units
async def async_fetch(self,
station: str,
wait: bool = True,
timeout: int = 10,
force: bool = False) -> Optional[str]:
"""Asynchronously fetch a report string from the source file
If wait, this will block if the file is already being updated
Can force the service to fetch a new file
"""
valid_station(station)
if wait and self._updating:
self._wait_until_updated()
if force or self.is_outdated:
if not await self.update(wait, timeout):
return None
with self._file.open() as fin:
report = self._extract(station, fin)
return report
def __init__(self, station_ident: str):
# Raises a BadStation error if needed
station.valid_station(station_ident)
self.service = service.get_service(station_ident)(
self.__class__.__name__.lower())
self.station = station_ident
def __init__(self, icao: str):
# Raises a BadStation error if needed
valid_station(icao)
self.icao = icao
self.station = Station.from_icao(icao)
