3ea4a7ca62
Add support for Trove commands cluster-grow and cluster-shrink. Added the grow and shrink actions to the clusters list table. The grow and shrink actions are only available for MongoDB and Redis clusters. Added the grow panel table to list the new instances to be added to the cluster. There is a table action Add Instance where the instance details are specified then added to the new instances table. A Remove Instance table and row action is available to remove any instances from the table. A Grow Cluster table action will add the instances to the instances in the table to the cluster. Removed the add shard action as it is now deprecated and is replaced by the grow action. Added a cluster manager helper to keep track of the newly added instances in the grow panel. Added the shrink panel table that lists the instances belonging to the cluster in a table. The selected instance(s) can then be removed from the cluster with the shrink command. Added the cluster_grow and cluster_shrink commands to the api. Change-Id: I05dbc73282b333e3ed8cfd4cdbda673ec86f57fd Co-Authored-By: Duk Loi <duk@tesora.com> Implements: blueprint trove-support-cluster-grow-shrink
87 lines
2.3 KiB
Python
87 lines
2.3 KiB
Python
# Copyright 2016 Tesora Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from django.core import cache
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def get(cluster_id):
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if not has_cluster(cluster_id):
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manager = ClusterInstanceManager(cluster_id)
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cache.cache.set(cluster_id, manager)
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return cache.cache.get(cluster_id)
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def delete(cluster_id):
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manager = get(cluster_id)
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manager.clear_instances()
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cache.cache.delete(cluster_id)
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def update(cluster_id, manager):
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cache.cache.set(cluster_id, manager)
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def has_cluster(cluster_id):
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if cache.cache.get(cluster_id):
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return True
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else:
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return False
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class ClusterInstanceManager(object):
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instances = []
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def __init__(self, cluster_id):
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self.cluster_id = cluster_id
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def get_instances(self):
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return self.instances
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def get_instance(self, id):
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for instance in self.instances:
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if instance.id == id:
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return instance
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return None
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def add_instance(self, id, name, flavor_id,
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flavor, volume, type, related_to):
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instance = ClusterInstance(id, name, flavor_id, flavor,
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volume, type, related_to)
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self.instances.append(instance)
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update(self.cluster_id, self)
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return self.instances
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def delete_instance(self, id):
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instance = self.get_instance(id)
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if instance:
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self.instances.remove(instance)
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update(self.cluster_id, self)
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def clear_instances(self):
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del self.instances[:]
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class ClusterInstance(object):
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def __init__(self, id, name, flavor_id, flavor, volume, type, related_to):
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self.id = id
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self.name = name
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self.flavor_id = flavor_id
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self.flavor = flavor
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self.volume = volume
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self.type = type
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self.related_to = related_to
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