c00897c02e
This patch adds liveness checks for watcher and handlers, without passing the manager's reference to modules that probably should not be aware of it. Related-Bug: #1705429 Change-Id: I0192756c556b13f98302a57acedce269c278e260
45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
# Copyright 2018 Maysa de Macedo Souza.
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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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class HealthRegister(object):
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instance = None
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def __init__(self):
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self.registry = []
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def register(self, elem):
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self.registry.append(elem)
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@classmethod
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def get_instance(cls):
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if not HealthRegister.instance:
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HealthRegister.instance = cls()
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return HealthRegister.instance
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class HealthHandler(object):
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"""Base class for health handlers."""
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def __init__(self):
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super(HealthHandler, self).__init__()
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self._healthy = True
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self._manager = HealthRegister.get_instance()
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self._manager.register(self)
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def set_health_status(self, healthy):
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self._healthy = healthy
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def is_healthy(self):
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return self._healthy
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