Coordinate distributed systems.
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import time
import uuid
import six
from tooz import coordination
ALIVE_TIME = 1
coordinator = coordination.get_coordinator('kazoo://localhost', b'host-1')
coordinator.start()
# Create a group
group = six.binary_type(six.text_type(uuid.uuid4()).encode('ascii'))
request = coordinator.create_group(group)
request.get()
# Join a group
request = coordinator.join_group(group)
request.get()
def when_i_am_elected_leader(event):
# event is a LeaderElected event
print(event.group_id, event.member_id)
# Propose to be a leader for the group
coordinator.watch_elected_as_leader(group, when_i_am_elected_leader)
start = time.time()
while time.time() - start < ALIVE_TIME:
coordinator.heartbeat()
coordinator.run_watchers()
time.sleep(0.1)
coordinator.stop()