mirror of https://github.com/kubernetes/kops.git
70 lines
1.9 KiB
Go
70 lines
1.9 KiB
Go
package kutil
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import (
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"fmt"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/service/autoscaling"
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"github.com/golang/glog"
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"k8s.io/kops/upup/pkg/fi/cloudup/awsup"
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)
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// findAutoscalingGroups finds autoscaling groups matching the specified tags
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// This isn't entirely trivial because autoscaling doesn't let us filter with as much precision as we wouldlike
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func findAutoscalingGroups(cloud *awsup.AWSCloud, tags map[string]string) ([]*autoscaling.Group, error) {
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var asgs []*autoscaling.Group
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glog.V(2).Infof("Listing all Autoscaling groups matching cluster tags")
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var asgNames []*string
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{
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var asFilters []*autoscaling.Filter
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for _, v := range tags {
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// Not an exact match, but likely the best we can do
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asFilters = append(asFilters, &autoscaling.Filter{
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Name: aws.String("value"),
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Values: []*string{aws.String(v)},
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})
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}
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request := &autoscaling.DescribeTagsInput{
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Filters: asFilters,
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}
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err := cloud.Autoscaling.DescribeTagsPages(request, func(p *autoscaling.DescribeTagsOutput, lastPage bool) bool {
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for _, t := range p.Tags {
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switch *t.ResourceType {
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case "auto-scaling-group":
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asgNames = append(asgNames, t.ResourceId)
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default:
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glog.Warningf("Unknown resource type: %v", *t.ResourceType)
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}
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}
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return true
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})
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if err != nil {
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return nil, fmt.Errorf("error listing autoscaling cluster tags: %v", err)
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}
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}
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if len(asgNames) != 0 {
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request := &autoscaling.DescribeAutoScalingGroupsInput{
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AutoScalingGroupNames: asgNames,
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}
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err := cloud.Autoscaling.DescribeAutoScalingGroupsPages(request, func(p *autoscaling.DescribeAutoScalingGroupsOutput, lastPage bool) bool {
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for _, asg := range p.AutoScalingGroups {
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if !matchesAsgTags(tags, asg.Tags) {
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// We used an inexact filter above
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continue
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}
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asgs = append(asgs, asg)
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}
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return true
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})
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if err != nil {
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return nil, fmt.Errorf("error listing autoscaling groups: %v", err)
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}
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}
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return asgs, nil
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}
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