49 lines
1.6 KiB
Python
49 lines
1.6 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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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 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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"""Test orchestrator leadership organization via Postgres."""
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import uuid
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import time
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class TestPostgres(object):
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def test_claim_leadership(self, blank_state):
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"""Test that a node can claim leadership.
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First test claiming leadership with an empty table, simulating startup
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Second test that an immediate follow-up claim is denied
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Third test that a usurping claim after the grace period succeeds
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"""
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ds = blank_state
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first_leader = uuid.uuid4()
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second_leader = uuid.uuid4()
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print("Claiming leadership for %s" % str(first_leader.bytes))
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crown = ds.claim_leadership(first_leader)
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assert crown
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print("Claiming leadership for %s" % str(second_leader.bytes))
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crown = ds.claim_leadership(second_leader)
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assert crown is False
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time.sleep(20)
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print(
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"Claiming leadership for %s after 20s" % str(second_leader.bytes))
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crown = ds.claim_leadership(second_leader)
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assert crown
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