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[ADD] Currency rate updates from Bank Of Canada

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This commit is contained in:
Daniel Dico
2014-02-28 13:50:33 +01:00
committed by Guewen Baconnier
parent 1396efbefc f79cc06580
commit 05e194ff10
1 changed files with 76 additions and 8 deletions
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84
currency_rate_update/currency_rate_update.py
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@@ -59,6 +59,9 @@ class Currency_rate_update_service(osv.Model):
('Yahoo_getter','Yahoo Finance '),
('PL_NBP_getter','Narodowy Bank Polski'), # Added for polish rates
('Banxico_getter', 'Banco de México'), # Added for mexican rates
# Bank of Canada is using RSS-CB http://www.cbwiki.net/wiki/index.php/Specification_1.1 :
# This RSS format is used by other national banks (Thailand, Malaysia, Mexico...)
('CA_BOC_getter','Bank of Canada - noon rates'), # Added for canadian rates
],
"Webservice to use",
required = True
@@ -211,13 +214,16 @@ class Currency_rate_update(osv.Model):
vals,
)
note = note + "\n%s currency updated. "\
%(datetime.strftime(datetime.today(), '%Y-%m-%d %H:%M:%S'))
note = note + (log_info or '')
# show the most recent note at the top
note = "\n%s currency updated. "\
%(datetime.strftime(datetime.today(), '%Y-%m-%d %H:%M:%S'))\
+ note
note = (log_info or '') + note
service.write({'note':note})
except Exception, e:
error_msg = note + "\n%s ERROR : %s"\
%(datetime.strftime(datetime.today(), '%Y-%m-%d %H:%M:%S'), str(e))
error_msg = "\n%s ERROR : %s"\
%(datetime.strftime(datetime.today(), '%Y-%m-%d %H:%M:%S'), str(e))\
+ note
_logger.info(str(e))
service.write({'note':error_msg})
@@ -263,6 +269,7 @@ class Currency_getter_factory():
'Google_getter',
'Yahoo_getter',
'Banxico_getter',
'CA_BOC_getter',
]
if class_name in allowed:
class_def = eval(class_name)
@@ -340,12 +347,12 @@ class Curreny_getter_interface(object) :
"""Check date constrains. WARN : rate_date must be of datetime type"""
days_delta = (datetime.today() - rate_date).days
if days_delta > max_delta_days:
raise Exception('The rate date from ECB (%s) is %d days away from today, which is over the limit (%d days). Rate not updated in OpenERP.'%(rate_date, days_delta, max_delta_days))
raise Exception('The rate timestamp (%s) is %d days away from today, which is over the limit (%d days). Rate not updated in OpenERP.'%(rate_date, days_delta, max_delta_days))
# We always have a warning when rate_date <> today
rate_date_str = datetime.strftime(rate_date, '%Y-%m-%d')
if rate_date_str != datetime.strftime(datetime.today(), '%Y-%m-%d'):
self.log_info = "WARNING : the rate date from ECB (%s) is not today's date" % rate_date_str
_logger.warning("the rate date from ECB (%s) is not today's date", rate_date_str)
self.log_info = "WARNING : the rate timestamp (%s) is not today's date" % rate_date_str
_logger.warning("the rate timestamp (%s) is not today's date", rate_date_str)
#Yahoo ###################################################################################
@@ -595,3 +602,64 @@ class Banxico_getter(Curreny_getter_interface) : # class added for Mexico rates
self.updated_currency[curr] = rate
logger.debug("Rate retrieved : " + main_currency + ' = ' + str(rate) + ' ' + curr)
##CA BOC ##### Bank of Canada ############################################################
class CA_BOC_getter(Curreny_getter_interface) :
"""Implementation of Curreny_getter_factory interface for Bank of Canada RSS service"""
def get_updated_currency(self, currency_array, main_currency, max_delta_days):
"""implementation of abstract method of Curreny_getter_interface"""
# as of Jan 2014 BOC is publishing noon rates for about 60 currencies
url = 'http://www.bankofcanada.ca/stats/assets/rates_rss/noon/en_%s.xml'
# closing rates are available as well (please note there are only 12
# currencies reported):
# http://www.bankofcanada.ca/stats/assets/rates_rss/closing/en_%s.xml
#we do not want to update the main currency
if main_currency in currency_array:
currency_array.remove(main_currency)
import feedparser
import pytz
from dateutil import parser
for curr in currency_array:
_logger.debug("BOC currency rate service : connecting...")
dom = feedparser.parse(url % curr)
self.validate_cur(curr)
# check if BOC service is running
if dom.bozo and dom.status <> 404:
_logger.error("Bank of Canada - service is down - try again\
later...")
# check if BOC sent a valid response for this currency
if dom.status != 200:
_logger.error("Exchange data for %s is not reported by Bank\
of Canada." % curr)
raise osv.except_osv('Error !', 'Exchange data for %s is not\
reported by Bank of Canada.' % str(curr))
_logger.debug("BOC sent a valid RSS file for: " + curr)
# check for valid exchange data
if (dom.entries[0].cb_basecurrency == main_currency) and \
(dom.entries[0].cb_targetcurrency == curr):
rate = dom.entries[0].cb_exchangerate.split('\n', 1)[0]
rate_date_datetime = parser.parse(dom.entries[0].updated)\
.astimezone(pytz.utc).replace(tzinfo=None)
self.check_rate_date(rate_date_datetime, max_delta_days)
self.updated_currency[curr] = rate
_logger.debug("BOC Rate retrieved : 1 " + main_currency +
' = ' + str(rate) + ' ' + curr)
else:
_logger.error("Exchange data format error for Bank of Canada -\
%s. Please check provider data format and/or source code." % curr)
raise osv.except_osv('Error !', 'Exchange data format error for\
Bank of Canada - %s !' % str(curr))
return self.updated_currency, self.log_info