mirror of https://github.com/kubernetes/kops.git
136 lines
3.6 KiB
Go
136 lines
3.6 KiB
Go
/*
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Copyright 2021 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 awstasks
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import (
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"fmt"
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"github.com/aws/aws-sdk-go/service/autoscaling"
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"k8s.io/klog/v2"
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"k8s.io/kops/upup/pkg/fi"
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"k8s.io/kops/upup/pkg/fi/cloudup/awsup"
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"k8s.io/kops/upup/pkg/fi/cloudup/cloudformation"
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"k8s.io/kops/upup/pkg/fi/cloudup/terraform"
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)
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// WarmPool provdes the definition for an ASG warm pool in aws.
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// +kops:fitask
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type WarmPool struct {
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// Name is the name of the ASG.
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Name *string
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// Lifecycle is the resource lifecycle.
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Lifecycle *fi.Lifecycle
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Enabled *bool
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// MaxSize is the max number of nodes in the warm pool.
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MaxSize *int64
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// MinSize is the smallest number of nodes in the warm pool.
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MinSize int64
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AutoscalingGroup *AutoscalingGroup
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}
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// Find is used to discover the ASG in the cloud provider.
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func (e *WarmPool) Find(c *fi.Context) (*WarmPool, error) {
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cloud := c.Cloud.(awsup.AWSCloud)
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svc := cloud.Autoscaling()
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warmPool, err := svc.DescribeWarmPool(&autoscaling.DescribeWarmPoolInput{
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AutoScalingGroupName: e.Name,
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})
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if err != nil {
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if awsup.AWSErrorCode(err) == "ValidationError" {
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return nil, nil
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}
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return nil, err
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}
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if warmPool.WarmPoolConfiguration == nil {
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return &WarmPool{
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Name: e.Name,
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Lifecycle: e.Lifecycle,
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Enabled: fi.Bool(false),
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}, nil
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}
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actual := &WarmPool{
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Name: e.Name,
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Lifecycle: e.Lifecycle,
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Enabled: fi.Bool(true),
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MaxSize: warmPool.WarmPoolConfiguration.MaxGroupPreparedCapacity,
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MinSize: fi.Int64Value(warmPool.WarmPoolConfiguration.MinSize),
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}
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return actual, nil
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}
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func (e *WarmPool) Run(c *fi.Context) error {
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return fi.DefaultDeltaRunMethod(e, c)
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}
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func (*WarmPool) CheckChanges(a, e, changes *WarmPool) error {
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return nil
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}
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func (*WarmPool) RenderAWS(t *awsup.AWSAPITarget, a, e, changes *WarmPool) error {
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svc := t.Cloud.Autoscaling()
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if changes != nil {
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if fi.BoolValue(e.Enabled) {
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minSize := e.MinSize
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maxSize := e.MaxSize
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if maxSize == nil {
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maxSize = fi.Int64(-1)
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}
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request := &autoscaling.PutWarmPoolInput{
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AutoScalingGroupName: e.Name,
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MaxGroupPreparedCapacity: maxSize,
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MinSize: fi.Int64(minSize),
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}
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_, err := svc.PutWarmPool(request)
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if err != nil {
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if awsup.AWSErrorCode(err) == "ValidationError" {
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return fi.NewTryAgainLaterError("waiting for ASG to become ready")
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}
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return fmt.Errorf("error modifying warm pool: %w", err)
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}
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} else if a != nil {
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_, err := svc.DeleteWarmPool(&autoscaling.DeleteWarmPoolInput{
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AutoScalingGroupName: e.Name,
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// We don't need to do any cleanup so, the faster the better
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ForceDelete: fi.Bool(true),
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})
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if err != nil {
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return fmt.Errorf("error deleting warm pool: %w", err)
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}
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}
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}
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return nil
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}
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func (_ *WarmPool) RenderTerraform(t *terraform.TerraformTarget, a, e, changes *WarmPool) error {
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if changes != nil {
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klog.Warning("ASG warm pool is not supported by the terraform target")
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}
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return nil
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}
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func (_ *WarmPool) RenderCloudformation(t *cloudformation.CloudformationTarget, a, e, changes *WarmPool) error {
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if changes != nil {
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klog.Warning("ASG warm pool is not supported by the cloudformation target")
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}
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return nil
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}
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