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from __future__ import division
from datetime import datetime
from pip._vendor.cachecontrol.cache import BaseCache
def total_seconds(td):
"""Python 2.6 compatability"""
if hasattr(td, 'total_seconds'):
return int(td.total_seconds())
ms = td.microseconds
secs = (td.seconds + td.days * 24 * 3600)
return int((ms + secs * 10**6) / 10**6)
class RedisCache(BaseCache):
def __init__(self, conn):
self.conn = conn
def get(self, key):
return self.conn.get(key)
def set(self, key, value, expires=None):
if not expires:
self.conn.set(key, value)
else:
expires = expires - datetime.utcnow()
self.conn.setex(key, total_seconds(expires), value)
def delete(self, key):
self.conn.delete(key)
def clear(self):
"""Helper for clearing all the keys in a database. Use with
caution!"""
for key in self.conn.keys():
self.conn.delete(key)
def close(self):
"""Redis uses connection pooling, no need to close the connection."""
pass
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