73 lines
2.5 KiB
Python
73 lines
2.5 KiB
Python
# Copyright 2020 VEXXHOST, 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 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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"""Memcached Operator
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This module maintains the operator for Memcached, it takes care of creating
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the appropriate deployments, Mcrouter, pod monitors and Prometheus rules.
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"""
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import kopf
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from openstack_operator import utils
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@kopf.on.resume('infrastructure.vexxhost.cloud', 'v1alpha1', 'memcacheds')
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@kopf.on.create('infrastructure.vexxhost.cloud', 'v1alpha1', 'memcacheds')
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def create_or_resume(name, spec, **_):
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"""Create and re-sync any Memcached instances
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This function is called when a new resource is created but also when we
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start the service up for the first time.
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"""
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utils.create_or_update('memcached/deployment.yml.j2',
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name=name, spec=spec)
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utils.create_or_update('memcached/podmonitor.yml.j2',
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name=name, spec=spec)
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utils.create_or_update('memcached/prometheusrule.yml.j2',
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name=name, spec=spec)
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@kopf.on.update('infrastructure.vexxhost.cloud', 'v1alpha1', 'memcacheds')
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def update(name, spec, **_):
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"""Update a Memcached
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This function updates the deployment for Memcached if there are any
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changes that happen within it.
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"""
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utils.create_or_update('memcached/deployment.yml.j2',
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name=name, spec=spec)
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@kopf.on.event('apps', 'v1', 'deployments', labels={
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'app.kubernetes.io/managed-by': 'openstack-operator',
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'app.kubernetes.io/name': 'memcached',
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})
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def deployment_event(namespace, meta, spec, **_):
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"""Create and re-sync Mcrouter instances
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This function takes care of watching for the readyReplicas on the
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Deployments for Memcached to both update and synchronize the Mcrouter.
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"""
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name = meta['labels']['app.kubernetes.io/instance']
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selector = spec['selector']['matchLabels']
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servers = utils.get_ready_pod_ips(namespace, selector)
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utils.create_or_update('memcached/mcrouter.yml.j2',
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name=name, servers=servers,
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spec=spec['template']['spec'])
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