66 lines
2.7 KiB
Go
66 lines
2.7 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package nodegroups
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import (
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"k8s.io/autoscaler/cluster-autoscaler/cloudprovider"
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"k8s.io/autoscaler/cluster-autoscaler/context"
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"k8s.io/autoscaler/cluster-autoscaler/utils/errors"
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)
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// NodeGroupManager is responsible for creating/deleting node groups.
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type NodeGroupManager interface {
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CreateNodeGroup(context *context.AutoscalingContext, nodeGroup cloudprovider.NodeGroup) (CreateNodeGroupResult, errors.AutoscalerError)
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RemoveUnneededNodeGroups(context *context.AutoscalingContext) error
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CleanUp()
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}
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// NoOpNodeGroupManager is a no-op implementation of NodeGroupManager.
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// It does not remove any node groups and its CreateNodeGroup method always returns an error.
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// To be used together with NoOpNodeGroupListProcessor.
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type NoOpNodeGroupManager struct {
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}
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// CreateNodeGroupResult result captures result of successful NodeGroupManager.CreateNodeGroup call.
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type CreateNodeGroupResult struct {
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// Main created node group, matching the requested node group passed to CreateNodeGroup call
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MainCreatedNodeGroup cloudprovider.NodeGroup
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// List of extra node groups created by CreateNodeGroup call. Non-empty if due manager specific
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// constraints creating one node group requires creating other ones (e.g. matching node group
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// must exist in each zone for multizonal deployments)
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ExtraCreatedNodeGroups []cloudprovider.NodeGroup
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}
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// CreateNodeGroup always returns internal error. It must not be called on NoOpNodeGroupManager.
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func (*NoOpNodeGroupManager) CreateNodeGroup(context *context.AutoscalingContext, nodeGroup cloudprovider.NodeGroup) (CreateNodeGroupResult, errors.AutoscalerError) {
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return CreateNodeGroupResult{}, errors.NewAutoscalerError(errors.InternalError, "not implemented")
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}
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// RemoveUnneededNodeGroups does nothing in NoOpNodeGroupManager
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func (*NoOpNodeGroupManager) RemoveUnneededNodeGroups(context *context.AutoscalingContext) error {
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return nil
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}
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// CleanUp does nothing in NoOpNodeGroupManager
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func (*NoOpNodeGroupManager) CleanUp() {}
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// NewDefaultNodeGroupManager creates an instance of NodeGroupManager.
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func NewDefaultNodeGroupManager() NodeGroupManager {
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return &NoOpNodeGroupManager{}
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}
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