def __init__(self, config, cluster='main'):
# Support multiple versions of carbon, the API changed in 0.10.
args = inspect.getargspec(ConsistentHashingRouter.__init__).args
if 'replication_factor' in args:
r = ConsistentHashingRouter(config.replication_factor(cluster))
else:
class Settings(object):
REPLICATION_FACTOR = config.replication_factor(cluster)
DIVERSE_REPLICAS = False
ROUTER_HASH_TYPE = None
r = ConsistentHashingRouter(Settings())
# 'hash_type' was added only in carbon 1.0.2 or master
args = inspect.getargspec(ConsistentHashRing.__init__).args
if 'hash_type' in args:
r.ring = ConsistentHashRing(nodes=[],
hash_type=config.hashing_type(cluster))
self.ring = r
try:
dest_list = config.destinations(cluster)
self.destinations = util.parseDestinations(dest_list)
except ValueError as e:
raise SystemExit("Unable to parse destinations!" + str(e))
for d in self.destinations:
self.ring.addDestination(d)
def test_5_node_positional_itegrity(self):
"""Make a cluster, verify we don't have positional collisions"""
ring = ConsistentHashRing([], hash_type='fnv1a_ch')
for n in range(5):
ring.add_node(("192.168.10.%s" % str(10 + n), "%s" % str(10 + n)))
self.assertEqual(len([n[0] for n in ring.ring]),
len(set([n[0] for n in ring.ring])))
def __init__(self, settings):
replication_factor = settings.REPLICATION_FACTOR
diverse_replicas = settings.DIVERSE_REPLICAS
self.replication_factor = int(replication_factor)
self.diverse_replicas = diverse_replicas
self.instance_ports = {} # { (server, instance) : port }
self.ring = ConsistentHashRing([])
def test_chr_get_node_fnv1a(self):
hosts = [("127.0.0.1", "ba603c36342304ed77953f84ac4d357b"),
("127.0.0.2", "5dd63865534f84899c6e5594dba6749a"),
("127.0.0.3", "866a18b81f2dc4649517a1df13e26f28")]
hashring = ConsistentHashRing(hosts, hash_type='fnv1a_ch')
self.assertEqual(hashring.get_node('hosts.worker1.cpu'),
('127.0.0.1', 'ba603c36342304ed77953f84ac4d357b'))
self.assertEqual(hashring.get_node('hosts.worker2.cpu'),
('127.0.0.3', '866a18b81f2dc4649517a1df13e26f28'))
def test_chr_compute_ring_position_fnv1a(self):
hosts = [("127.0.0.1", "ba603c36342304ed77953f84ac4d357b"),
("127.0.0.2", "5dd63865534f84899c6e5594dba6749a"),
("127.0.0.3", "866a18b81f2dc4649517a1df13e26f28")]
hashring = ConsistentHashRing(hosts, hash_type='fnv1a_ch')
self.assertEqual(hashring.compute_ring_position('hosts.worker1.cpu'),
59573)
self.assertEqual(hashring.compute_ring_position('hosts.worker2.cpu'),
35749)
def __init__(self, settings):
replication_factor = settings.REPLICATION_FACTOR
diverse_replicas = settings.DIVERSE_REPLICAS
self.replication_factor = int(replication_factor)
self.diverse_replicas = diverse_replicas
self.instance_ports = {} # { (server, instance) : port }
hash_type = settings.ROUTER_HASH_TYPE or 'carbon_ch'
self.ring = ConsistentHashRing([], hash_type=hash_type)
def __init__(self, config, cluster='main', aggregation_rules=None):
relay_method = config.relay_method(cluster=cluster)
if relay_method == "consistent-hashing":
# Support multiple versions of carbon, the API changed in 0.10.
args = inspect.getargspec(ConsistentHashingRouter.__init__).args
if 'replication_factor' in args:
r = ConsistentHashingRouter(config.replication_factor(cluster))
else:
class Settings(object):
REPLICATION_FACTOR = config.replication_factor(cluster)
DIVERSE_REPLICAS = False
r = ConsistentHashingRouter(Settings())
# 'hash_type' was added only in carbon 1.0.2 or master
args = inspect.getargspec(ConsistentHashRing.__init__).args
if 'hash_type' in args:
r.ring = ConsistentHashRing(
hash_type=config.hashing_type(cluster))
elif relay_method == "aggregated-consistent-hashing":
if aggregation_rules:
RuleManager.read_from(aggregation_rules)
r = AggregatedConsistentHashingRouter(
RuleManager, config.replication_factor(cluster))
self.ring = r
try:
dest_list = config.destinations(cluster)
self.destinations = util.parseDestinations(dest_list)
except ValueError as e:
raise SystemExit("Unable to parse destinations!" + str(e))
for d in self.destinations:
self.ring.addDestination(d)
def __init__(self, replication_factor=1):
self.replication_factor = int(replication_factor)
self.instance_ports = {} # { (server, instance) : port }
self.ring = ConsistentHashRing([])
def test_11_get_nodes(self):
"""Trigger bisect on identical first key, see: issues/766"""
ring = ConsistentHashRing([], replica_count=1)
ring.add_node(("1", "1"))
n = ring.get_nodes("('1', '1'):0")
self.assertEqual([('1', '1')], list(n))
