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##
## coinfetch-api-cb - Coinbase API plugin for coinfetch
## Copyright (C) 2017 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
class CoinbaseTicker(Ticker):
def __init__(self, path):
super().__init__(path)
def get_pair(self, a, b):
return '{}-{}'.format(a.upper(), b.upper())
def get_pair_data(self, response, pair=None):
return response.json()
def get_rate_pow(self, a, b, amt, power, kind):
if kind not in ('spot', 'buy', 'sell'):
raise NoSuchKindException(kind)
r = get(self.path + self.get_pair(a, b) + '/' + kind,
headers={'CB-VERSION': '2017-09-19'})
res = self.get_pair_data(r, (a, b))
print(r.text)
if 'data' not in res:
raise NoSuchPairException('{}/{}'.format(a, b))
if 'errors' in res:
raise Exception(res['errors'])
return (float(res['data']['amount']) ** power) * amt
def get_rate(self, a, b, amt=1, kind='spot'):
return super().get_rate(a, b, amt, kind)
register_ticker('cb', 'The Coinbase ticker (built-in)',
CoinbaseTicker('https://api.coinbase.com/v2/prices/'))
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