def fetch_forecast(self, date):
# construct url
datestr = date.strftime('%Y%m%d')
url = self.base_url + '/Library/Repository/Market%20Reports/' + datestr + '_da_ex.xls'
# make request with self.request for easier debugging, mocking
response = self.request(url)
if not response:
return pd.DataFrame()
if response.status_code == 404:
LOGGER.debug('No MISO forecast data available at %s' % datestr)
return pd.DataFrame()
xls = pd.read_excel(BytesIO(response.content))
# clean header
header_df = xls.iloc[:5]
df = xls.iloc[5:]
df.columns = ['hour_str'] + list(header_df.iloc[-1][1:])
# set index
idx = []
for hour_str in df['hour_str']:
# format like 'Hour 01' to 'Hour 24'
ihour = int(hour_str[5:]) - 1
local_ts = datetime(date.year, date.month, date.day, ihour)
idx.append(self.utcify(local_ts))
df.index = idx
df.index.set_names(['timestamp'], inplace=True)
# return
return df
def fetch_forecast(self, date):
# construct url
datestr = date.strftime("%Y%m%d")
url = self.base_url + "/Library/Repository/Market%20Reports/" + datestr + "_da_ex.xls"
# make request
try:
xls = pd.read_excel(url)
except HTTPError:
LOGGER.debug("No MISO forecast data available at %s" % datestr)
return pd.DataFrame()
# clean header
header_df = xls.iloc[:5]
df = xls.iloc[5:]
df.columns = ["hour_str"] + list(header_df.iloc[-1][1:])
# set index
idx = []
for hour_str in df["hour_str"]:
# format like 'Hour 01' to 'Hour 24'
ihour = int(hour_str[5:]) - 1
local_ts = datetime(date.year, date.month, date.day, ihour)
idx.append(self.utcify(local_ts))
df.index = idx
df.index.set_names(["timestamp"], inplace=True)
# return
return df
def fetch_forecast(self, date):
# construct url
datestr = date.strftime('%Y%m%d')
url = self.base_url + '/Library/Repository/Market%20Reports/' + datestr + '_da_ex.xls'
# make request with self.request for easier debugging, mocking
response = self.request(url)
if not response:
return pd.DataFrame()
if response.status_code == 404:
LOGGER.debug('No MISO forecast data available at %s' % datestr)
return pd.DataFrame()
xls = pd.read_excel(BytesIO(response.content))
# clean header
header_df = xls.iloc[:5]
df = xls.iloc[5:]
df.columns = ['hour_str'] + list(header_df.iloc[-1][1:])
# set index
idx = []
for hour_str in df['hour_str']:
# format like 'Hour 01' to 'Hour 24'
ihour = int(hour_str[5:]) - 1
local_ts = datetime(date.year, date.month, date.day, ihour)
idx.append(self.utcify(local_ts))
df.index = idx
df.index.set_names(['timestamp'], inplace=True)
# return
return df
def utcify_index(self, local_index, tz_name=None):
"""
Convert a DateTimeIndex to UTC.
:param DateTimeIndex local_index: The local DateTimeIndex to be converted.
:param string tz_name: If local_ts is naive, it is assumed to be in timezone tz.
If tz is not provided, the client's default timezone is used.
:return: DatetimeIndex in UTC.
:rtype: DatetimeIndex
"""
# set up tz
if tz_name is None:
tz_name = self.TZ_NAME
# localize
try:
aware_local_index = local_index.tz_localize(tz_name)
except AmbiguousTimeError as e:
LOGGER.debug(e)
aware_local_index = local_index.tz_localize(tz_name, ambiguous='infer')
# except Exception as e:
# LOGGER.debug(e) # already aware
# print e
# aware_local_index = local_index
# convert to utc
aware_utc_index = aware_local_index.tz_convert('UTC')
# return
return aware_utc_index
def unzip(self, content):
"""
Unzip encoded data.
Returns the unzipped content as an array of strings, each representing one file's content
or returns None if an error was encountered.
***Previous behavior: Only returned the content from the first file***
"""
# create zip file
try:
filecontent = BytesIO(content)
except TypeError:
filecontent = StringIO(content)
try:
# have zipfile
z = zipfile.ZipFile(filecontent)
except zipfile.BadZipfile:
LOGGER.error('%s: unzip failure for content beginning:\n%s' %
(self.NAME, str(content)[0:100]))
LOGGER.debug('%s: Faulty unzip content:\n%s' %
(self.NAME, content))
return None
# have unzipped content
unzipped = [z.read(thisfile) for thisfile in z.namelist()]
z.close()
# return
return unzipped
def unzip(self, content):
"""
Unzip encoded data.
Returns the unzipped content as an array of strings, each representing one file's content
or returns None if an error was encountered.
***Previous behavior: Only returned the content from the first file***
"""
# create zip file
try:
filecontent = BytesIO(content)
except TypeError:
filecontent = StringIO(content)
try:
# have zipfile
z = zipfile.ZipFile(filecontent)
except zipfile.BadZipfile:
LOGGER.error('%s: unzip failure for content beginning:\n%s' % (self.NAME, str(content)[0:100]))
LOGGER.debug('%s: Faulty unzip content:\n%s' % (self.NAME, content))
return None
# have unzipped content
unzipped = [z.read(thisfile) for thisfile in z.namelist()]
z.close()
# return
return unzipped
def utcify_index(self, local_index, tz_name=None, tz_col=None):
"""
Convert a DateTimeIndex to UTC.
:param DateTimeIndex local_index: The local DateTimeIndex to be converted.
:param string tz_name: If local_ts is naive, it is assumed to be in timezone tz.
If tz is not provided, the client's default timezone is used.
:return: DatetimeIndex in UTC.
:rtype: DatetimeIndex
"""
# set up tz
if tz_name is None:
tz_name = self.TZ_NAME
# use tz col if given
if tz_col is not None:
# it seems like we shouldn't have to iterate, but all the smart ways aren't working
aware_utc_list = []
for i in range(len(local_index)):
try:
aware_local_ts = pytz.timezone(tz_col[i]).localize(local_index[i])
except pytz.UnknownTimeZoneError:
# fall back to local ts
aware_local_ts = pytz.timezone(tz_name).localize(local_index[i])
# utcify
aware_utc_ts = self.utcify(aware_local_ts)
aware_utc_list.append(aware_utc_ts)
# indexify
aware_utc_index = pd.DatetimeIndex(aware_utc_list)
else:
# localize
try:
aware_local_index = local_index.tz_localize(tz_name)
except AmbiguousTimeError as e:
LOGGER.debug(e)
try:
aware_local_index = local_index.tz_localize(tz_name, ambiguous='infer')
except AmbiguousTimeError:
LOGGER.warn('Second DatetimeIndex localization fallback, assuming DST transition day.')
dst_active_list = self._dst_active_hours_for_transition_day(local_dt_index=local_index)
aware_local_index = local_index.tz_localize(tz_name, ambiguous=dst_active_list)
except TypeError as e:
# already aware
LOGGER.debug(e)
aware_local_index = local_index
# convert to utc
aware_utc_index = aware_local_index.tz_convert('UTC')
# return
return aware_utc_index
def request(self, url, mode='get', retry_sec=5, **kwargs):
"""
Get or post to a URL with the provided kwargs.
Returns the response, or None if an error was encountered.
If the mode is not 'get' or 'post', raises ValueError.
"""
# check args
allowed_modes = ['get', 'post']
if mode not in allowed_modes:
raise ValueError('Invalid request mode %s' % mode)
# check for session
try:
session = getattr(self, 'session')
except AttributeError:
self.session = requests.Session()
session = self.session
# carry out request
try:
response = getattr(session, mode)(url, verify=False,
timeout=self.TIMEOUT_SECONDS,
**kwargs)
# except requests.exceptions.ChunkedEncodingError as e:
# # JSON incomplete or not found
# msg = '%s: chunked encoding error for %s, %s:\n%s' % (self.NAME, url, kwargs, e)
# LOGGER.error(msg)
# return None
except (requests.exceptions.ConnectionError, requests.exceptions.Timeout) as e:
# eg max retries exceeded
msg = '%s: connection error for %s, %s:\n%s' % (self.NAME, url, kwargs, e)
LOGGER.error(msg)
return None
# except requests.exceptions.RequestException:
# msg = '%s: request exception for %s, %s:\n%s' % (self.NAME, url, kwargs, e)
# LOGGER.error(msg)
# return None
if response.status_code == 200:
# success
LOGGER.debug('%s: request success for %s, %s with cache hit %s' % (self.NAME, url, kwargs, getattr(response, 'from_cache', None)))
elif response.status_code == 429:
# retry on throttle
LOGGER.warn('%s: retrying in %d seconds, throttled for %s, %s' % (self.NAME, retry_sec, url, kwargs))
sleep(retry_sec)
return self.request(url, mode=mode, retry_sec=retry_sec, **kwargs)
else:
# non-throttle error
LOGGER.error('%s: request failure with code %s for %s, %s' % (self.NAME, response.status_code, url, kwargs))
return response
def utcify_index(self, local_index, tz_name=None, tz_col=None):
"""
Convert a DateTimeIndex to UTC.
:param DateTimeIndex local_index: The local DateTimeIndex to be converted.
:param string tz_name: If local_ts is naive, it is assumed to be in timezone tz.
If tz is not provided, the client's default timezone is used.
:return: DatetimeIndex in UTC.
:rtype: DatetimeIndex
"""
# set up tz
if tz_name is None:
tz_name = self.TZ_NAME
# use tz col if given
if tz_col is not None:
# it seems like we shouldn't have to iterate, but all the smart ways aren't working
aware_utc_list = []
for i in range(len(local_index)):
try:
aware_local_ts = pytz.timezone(tz_col[i]).localize(
local_index[i])
except pytz.UnknownTimeZoneError:
# fall back to local ts
aware_local_ts = pytz.timezone(tz_name).localize(
local_index[i])
# utcify
aware_utc_ts = self.utcify(aware_local_ts)
aware_utc_list.append(aware_utc_ts)
# indexify
aware_utc_index = pd.DatetimeIndex(aware_utc_list)
else:
# localize
try:
aware_local_index = local_index.tz_localize(tz_name)
except AmbiguousTimeError as e:
LOGGER.debug(e)
aware_local_index = local_index.tz_localize(tz_name,
ambiguous='infer')
except TypeError as e:
# already aware
LOGGER.debug(e)
aware_local_index = local_index
# convert to utc
aware_utc_index = aware_local_index.tz_convert('UTC')
# return
return aware_utc_index
def request(self,
url,
mode='get',
retry_sec=5,
retries_remaining=5,
**kwargs):
"""
Get or post to a URL with the provided kwargs.
Returns the response, or None if an error was encountered.
If the mode is not 'get' or 'post', raises ValueError.
"""
# check args
allowed_modes = ['get', 'post']
if mode not in allowed_modes:
raise ValueError('Invalid request mode %s' % mode)
# check for session
try:
session = getattr(self, 'session')
except AttributeError:
self.session = requests.Session()
session = self.session
# carry out request
try:
response = getattr(session, mode)(url,
verify=False,
timeout=self.timeout_seconds,
**kwargs)
# except requests.exceptions.ChunkedEncodingError as e:
# # JSON incomplete or not found
# msg = '%s: chunked encoding error for %s, %s:\n%s' % (self.NAME, url, kwargs, e)
# LOGGER.error(msg)
# return None
except (requests.exceptions.ConnectionError,
requests.exceptions.Timeout) as e:
# eg max retries exceeded
msg = '%s: connection error for %s, %s:\n%s' % (self.NAME, url,
kwargs, e)
LOGGER.error(msg)
return None
# except requests.exceptions.RequestException:
# msg = '%s: request exception for %s, %s:\n%s' % (self.NAME, url, kwargs, e)
# LOGGER.error(msg)
# return None
if response.status_code == 200:
# success
LOGGER.debug('%s: request success for %s, %s with cache hit %s' %
(self.NAME, url, kwargs,
getattr(response, 'from_cache', None)))
elif response.status_code == 429:
if retries_remaining > 0:
# retry on throttle
LOGGER.warn(
'%s: retrying in %d seconds (%d retries remaining), throttled for %s, %s'
% (self.NAME, retry_sec, retries_remaining, url, kwargs))
sleep(retry_sec)
retries_remaining -= 1
return self.request(url,
mode=mode,
retry_sec=retry_sec * 2,
retries_remaining=retries_remaining,
**kwargs)
else:
# exhausted retries
LOGGER.warn('%s: exhausted retries for %s, %s' %
(self.NAME, url, kwargs))
return None
else:
# non-throttle error
LOGGER.error('%s: request failure with code %s for %s, %s' %
(self.NAME, response.status_code, url, kwargs))
return response
