def __init__(self, hosts, options):
sentinel_kwargs = self._get_sentinel_kwargs(options)
node_kwargs = self._get_node_kwargs(options)
masters = None
# Try to fetch a list of all masters from any sentinel.
hosts = list(hosts)
shuffle(hosts) # Randomly sort sentinels before trying to bootstrap.
for host, port in hosts:
client = StrictRedis(host=host, port=port, **sentinel_kwargs)
try:
masters = client.sentinel_masters().keys()
break
except RedisError:
pass
if masters is None:
# No Sentinel responded successfully?
raise errors.MastersListUnavailable
if not len(masters):
# The masters list was empty?
raise errors.NoMastersConfigured
sentinel_kwargs.update({
# Sentinels connected to fewer sentinels than `MIN_SENTINELS` will
# be ignored.
'min_other_sentinels': options.get('MIN_SENTINELS',
len(hosts) / 2),
})
self.sentinel = Sentinel(hosts, **sentinel_kwargs)
masters = [self.sentinel.master_for(name, **node_kwargs)
for name in masters]
super(SentinelBackedRingClient, self).__init__(masters, options)
