69 lines
1.9 KiB
Python
69 lines
1.9 KiB
Python
# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
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# MIT License. See license.txt
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from __future__ import unicode_literals
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import redis, frappe, cPickle as pickle
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class RedisWrapper(redis.Redis):
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"""Redis client that will automatically prefix conf.db_name"""
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def make_key(self, key, user=None):
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if user:
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if user == True:
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user = frappe.session.user
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key = "user:{0}:{1}".format(user, key)
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return (frappe.conf.db_name + "|" + key).encode('utf-8')
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def set_value(self, key, val, user=None):
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"""Sets cache value."""
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key = self.make_key(key, user)
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frappe.local.cache[key] = val
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self.set(key, pickle.dumps(val))
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def get_value(self, key, generator=None, user=None):
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"""Returns cache value. If not found and generator function is
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given, it will call the generator.
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:param key: Cache key.
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:param generator: Function to be called to generate a value if `None` is returned."""
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original_key = key
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key = self.make_key(key, user)
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val = frappe.local.cache.get(key)
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if val is None:
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val = self.get(key)
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if val is not None:
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val = pickle.loads(val)
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if val is None and generator:
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val = generator()
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self.set_value(original_key, val, user=user)
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else:
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frappe.local.cache[key] = val
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return val
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def get_all(self, key):
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ret = {}
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for k in self.get_keys(key):
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ret[key] = self.get_value(k)
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return ret
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def get_keys(self, key):
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"""Return keys with wildcard `*`."""
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return self.keys(self.make_key(key + "*"))
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def delete_keys(self, key):
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"""Delete keys with wildcard `*`."""
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self.delete_value(self.get_keys(key), make_keys=False)
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def delete_value(self, keys, user=None, make_keys=True):
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"""Delete value, list of values."""
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if not isinstance(keys, (list, tuple)):
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keys = (keys, )
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for key in keys:
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if make_keys:
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key = self.make_key(key)
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self.delete(key)
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if key in frappe.local.cache:
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del frappe.local.cache[key]
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