60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
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# Copyright 2021 The Kubernetes Authors.
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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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import sys
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import logging
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logging.basicConfig(level=logging.INFO)
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class Config:
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# Validate config, exit if an error is detected
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def __init__(self, lock, lease_duration, renew_deadline, retry_period, onstarted_leading, onstopped_leading):
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self.jitter_factor = 1.2
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if lock is None:
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sys.exit("lock cannot be None")
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self.lock = lock
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if lease_duration <= renew_deadline:
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sys.exit("lease_duration must be greater than renew_deadline")
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if renew_deadline <= self.jitter_factor * retry_period:
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sys.exit("renewDeadline must be greater than retry_period*jitter_factor")
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if lease_duration < 1:
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sys.exit("lease_duration must be greater than one")
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if renew_deadline < 1:
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sys.exit("renew_deadline must be greater than one")
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if retry_period < 1:
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sys.exit("retry_period must be greater than one")
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self.lease_duration = lease_duration
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self.renew_deadline = renew_deadline
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self.retry_period = retry_period
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if onstarted_leading is None:
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sys.exit("callback onstarted_leading cannot be None")
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self.onstarted_leading = onstarted_leading
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if onstopped_leading is None:
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self.onstopped_leading = self.on_stoppedleading_callback
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else:
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self.onstopped_leading = onstopped_leading
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# Default callback for when the current candidate if a leader, stops leading
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def on_stoppedleading_callback(self):
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logging.info("stopped leading".format(self.lock.identity))
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