ekristen/aws-nuke

package resources

import (
    "context"
    "slices"

    "github.com/gotidy/ptr"

    "github.com/aws/aws-sdk-go/service/applicationautoscaling"

    "github.com/ekristen/libnuke/pkg/registry"
    "github.com/ekristen/libnuke/pkg/resource"
    "github.com/ekristen/libnuke/pkg/types"

    "github.com/ekristen/aws-nuke/v3/pkg/nuke"
)

const ApplicationAutoScalingScalableTargetResource = "ApplicationAutoScalingScalableTarget"

func init() {
    registry.Register(&registry.Registration{
        Name:     ApplicationAutoScalingScalableTargetResource,
        Scope:    nuke.Account,
        Resource: &AppAutoScaling{},
        Lister:   &ApplicationAutoScalingScalableTargetLister{},
    })
}

type ApplicationAutoScalingScalableTargetLister struct{}

func (l *ApplicationAutoScalingScalableTargetLister) List(_ context.Context, o interface{}) ([]resource.Resource, error) {
    opts := o.(*nuke.ListerOpts)
    svc := applicationautoscaling.New(opts.Session)

    namespaces := applicationautoscaling.ServiceNamespace_Values()

    // Note: Workspaces is not a valid namespace for DescribeScalableTargets anymore according to the API
    invalidNamespaces := []string{applicationautoscaling.ServiceNamespaceWorkspaces}

    params := &applicationautoscaling.DescribeScalableTargetsInput{}
    resources := make([]resource.Resource, 0)
    for _, namespace := range namespaces {
        if slices.Contains(invalidNamespaces, namespace) {
            continue
        }

        for {
            params.ServiceNamespace = ptr.String(namespace)
            resp, err := svc.DescribeScalableTargets(params)
            if err != nil {
                return nil, err
            }

            for _, out := range resp.ScalableTargets {
                resources = append(resources, &AppAutoScaling{
                    svc:       svc,
                    target:    out,
                    id:        *out.ResourceId,
                    roleARN:   *out.RoleARN,
                    dimension: *out.ScalableDimension,
                    namespace: *out.ServiceNamespace,
                })
            }

            if resp.NextToken == nil {
                break
            }
            params.NextToken = resp.NextToken
        }
    }

    return resources, nil
}

type AppAutoScaling struct {
    svc       *applicationautoscaling.ApplicationAutoScaling
    target    *applicationautoscaling.ScalableTarget
    id        string
    roleARN   string
    dimension string
    namespace string
}

func (a *AppAutoScaling) Remove(_ context.Context) error {
    _, err := a.svc.DeregisterScalableTarget(&applicationautoscaling.DeregisterScalableTargetInput{
        ResourceId:        &a.id,
        ScalableDimension: &a.dimension,
        ServiceNamespace:  &a.namespace,
    })

    if err != nil {
        return err
    }

    return nil
}

func (a *AppAutoScaling) Properties() types.Properties {
    properties := types.NewProperties()
    properties.Set("ResourceID", a.id)
    properties.Set("ScalableDimension", a.dimension)
    properties.Set("ServiceNamespace", a.namespace)

    return properties
}

func (a *AppAutoScaling) String() string {
    return a.id + ": " + a.dimension
}