50 lines
1.3 KiB
Python
50 lines
1.3 KiB
Python
# Copyright (C) 2020 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import time
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import uuid
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from tooz import coordination
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ALIVE_TIME = 1
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coordinator = coordination.get_coordinator('zake://', b'host-1')
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coordinator.start()
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# Create a group
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group = bytes(str(uuid.uuid4()).encode('ascii'))
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request = coordinator.create_group(group)
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request.get()
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# Join a group
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request = coordinator.join_group(group)
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request.get()
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def when_i_am_elected_leader(event):
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# event is a LeaderElected event
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print(event.group_id, event.member_id)
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# Propose to be a leader for the group
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coordinator.watch_elected_as_leader(group, when_i_am_elected_leader)
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start = time.time()
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while time.time() - start < ALIVE_TIME:
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coordinator.heartbeat()
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coordinator.run_watchers()
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time.sleep(0.1)
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coordinator.stop()
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