class MemcachedCache_Master(MemcachedCache, object):
""" the master instance of the memcached cache interface.
copies of this object will NOT share the connection, but instantiate their own.
When this master is destroyed it can flush the database, effectively erasing all data
Parameters
----------
memc_params : dict
dictionary with keys [host, port] to the memcached-server instance
wait_on_insert : bool
if True, wait on insert operations to successfully complete before continuing (default: False)
val_ttl : int >0
the time to life for each value in seconds
flush_on_del : bool
flush the databases when the object is destroyed (default: False)
"""
def __init__(self,
memc_params=_DEFAULT_MEMCACHE_CRED,
wait_on_insert=False,
val_ttl=12,
flush_on_del=False):
self.is_master = True
self.wait_on_insert = wait_on_insert
self.memc_params = memc_params
self.val_ttl = val_ttl
self.flush_on_del = flush_on_del
self.client = None
def __del__(self):
if self.flush_on_del:
self.client = Client((self.memc_params['host'], self.memc_params['port']),
default_noreply=not self.wait_on_insert)
self.client.flushdb()
