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##
## coinfetch-api-bitcoinaverage - BitcoinAverage API plugin for coinfetch
## Copyright (C) 2015-2016 Delwink, LLC
##
## Redistributions, modified or unmodified, in whole or in part, must retain
## applicable copyright or other legal privilege notices, these conditions, and
## the following license terms and disclaimer. Subject to these conditions,
## the holder(s) of copyright or other legal privileges, author(s) or
## assembler(s), and contributors of this work hereby grant to any person who
## obtains a copy of this work in any form:
##
## 1. Permission to reproduce, modify, distribute, publish, sell, sublicense,
## use, and/or otherwise deal in the licensed material without restriction.
##
## 2. A perpetual, worldwide, non-exclusive, royalty-free, irrevocable patent
## license to reproduce, modify, distribute, publish, sell, use, and/or
## otherwise deal in the licensed material without restriction, for any and all
## patents:
##
## a. Held by each such holder of copyright or other legal privilege,
## author or assembler, or contributor, necessarily infringed by the
## contributions alone or by combination with the work, of that privilege
## holder, author or assembler, or contributor.
##
## b. Necessarily infringed by the work at the time that holder of
## copyright or other privilege, author or assembler, or contributor made
## any contribution to the work.
##
## NO WARRANTY OF ANY KIND IS IMPLIED BY, OR SHOULD BE INFERRED FROM, THIS
## LICENSE OR THE ACT OF DISTRIBUTION UNDER THE TERMS OF THIS LICENSE,
## INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR
## A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS,
## ASSEMBLERS, OR HOLDERS OF COPYRIGHT OR OTHER LEGAL PRIVILEGE BE LIABLE FOR
## ANY CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN ACTION OF CONTRACT, TORT,
## OR OTHERWISE ARISING FROM, OUT OF, OR IN CONNECTION WITH THE WORK OR THE USE
## OF OR OTHER DEALINGS IN THE WORK.
##
from cfetch import register_ticker, NoSuchKindException, NoSuchPairException
from cfetch import Ticker
from requests import get
class BitcoinAverageTicker(Ticker):
def __init__(self, path):
super().__init__(path)
def get_pair_data(self, response):
return response.json()
def get_rate(self, a, b, amt=1, kind='24h_avg'):
a = a.upper()
b = b.upper()
if 'BTC' not in (a, b) or 'USD' not in (a, b):
self._fail(a, b)
r = get(self.path)
res = self.get_pair_data(r)
try:
if a == 'BTC':
if b not in res:
self._fail(a, b)
res = res[b]
return float(res[kind]) * amt
if a not in res:
self._fail(a, b)
res = res[a]
return (float(res[kind]) ** -1) * amt
except KeyError as e:
raise NoSuchKindException(str(e))
def _fail(self, a, b):
raise NoSuchPairException('{}/{}'.format(a, b))
register_ticker('ba', 'The BitcoinAverage ticker (built-in)',
BitcoinAverageTicker('https://api.bitcoinaverage.com/ticker/all'))
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