def parse_JSON(self, JSON_string):
"""
Parses an *Ozone* instance out of raw JSON data. Only certain
properties of the data are used: if these properties are not found or
cannot be parsed, an error is issued.
:param JSON_string: a raw JSON string
:type JSON_string: str
:returns: an *Ozone* instance or ``None`` if no data is available
:raises: *ParseResponseError* if it is impossible to find or parse the
data needed to build the result, *APIResponseError* if the JSON
string embeds an HTTP status error (this is an OWM web API 2.5 bug)
"""
if JSON_string is None:
raise parse_response_error.ParseResponseError('JSON data is None')
d = json.loads(JSON_string)
try:
# -- reference time (strip away Z and T on ISO8601 format)
ref_t = d['time'].replace('Z', '+00').replace('T', ' ')
reference_time = timeformatutils._ISO8601_to_UNIXtime(ref_t)
# -- reception time (now)
reception_time = timeutils.now('unix')
# -- location
lon = float(d['location']['longitude'])
lat = float(d['location']['latitude'])
place = location.Location(None, lon, lat, None)
# -- ozone Dobson Units value
du = d['data']
if du is not None:
du_value = float(du)
else:
raise ValueError('No information about Ozon Dobson Units')
except KeyError:
raise parse_response_error.ParseResponseError(''.join(
[__name__, ': impossible to parse UV Index']))
return ozone.Ozone(reference_time, place, None, du_value,
reception_time)
def parse_JSON(self, JSON_string):
"""
Parses an *NO2Index* instance out of raw JSON data. Only certain
properties of the data are used: if these properties are not found or
cannot be parsed, an error is issued.
:param JSON_string: a raw JSON string
:type JSON_string: str
:returns: an *NO2Index* instance or ``None`` if no data is available
:raises: *ParseResponseError* if it is impossible to find or parse the
data needed to build the result, *APIResponseError* if the JSON
string embeds an HTTP status error (this is an OWM web API 2.5 bug)
"""
if JSON_string is None:
raise parse_response_error.ParseResponseError('JSON data is None')
d = json.loads(JSON_string)
try:
# -- reference time (strip away Z and T on ISO8601 format)
t = d['time'].replace('Z', '+00').replace('T', ' ')
reference_time = timeformatutils._ISO8601_to_UNIXtime(t)
# -- reception time (now)
reception_time = timeutils.now('unix')
# -- location
lon = float(d['location']['longitude'])
lat = float(d['location']['latitude'])
place = location.Location(None, lon, lat, None)
# -- CO samples
no2_samples = [
dict(label=key,
precision=d['data'][key]['precision'],
value=d['data'][key]['value']) for key in d['data']
]
except KeyError:
raise parse_response_error.ParseResponseError(''.join(
[__name__, ': impossible to parse NO2Index']))
return no2index.NO2Index(reference_time, place, None, no2_samples,
reception_time)
def parse_JSON(self, JSON_string):
"""
Parses an *UVIndex* instance out of raw JSON data. Only certain
properties of the data are used: if these properties are not found or
cannot be parsed, an error is issued.
:param JSON_string: a raw JSON string
:type JSON_string: str
:returns: an *UVIndex* instance or ``None`` if no data is available
:raises: *ParseResponseError* if it is impossible to find or parse the
data needed to build the result, *APIResponseError* if the JSON
string embeds an HTTP status error (this is an OWM web API 2.5 bug)
"""
if JSON_string is None:
raise parse_response_error.ParseResponseError('JSON data is None')
d = json.loads(JSON_string)
try:
# -- reference time
reference_time = d['date']
# -- reception time (now)
reception_time = timeutils.now('unix')
# -- location
lon = float(d['lon'])
lat = float(d['lat'])
place = location.Location(None, lon, lat, None)
# -- UV intensity
uv_intensity = float(d['value'])
except KeyError:
raise parse_response_error.ParseResponseError(''.join(
[__name__, ': impossible to parse UV Index']))
return uvindex.UVIndex(reference_time, place, uv_intensity,
reception_time)