ekristen/aws-nuke

package resources

import (
    "context"

    "fmt"

    "github.com/sirupsen/logrus"

    "github.com/aws/aws-sdk-go/service/cloudformation"
    "github.com/aws/aws-sdk-go/service/cloudformation/cloudformationiface"

    "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 CloudFormationTypeResource = "CloudFormationType"

func init() {
    registry.Register(&registry.Registration{
        Name:     CloudFormationTypeResource,
        Scope:    nuke.Account,
        Resource: &CloudFormationType{},
        Lister:   &CloudFormationTypeLister{},
    })
}

type CloudFormationTypeLister struct{}

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

    svc := cloudformation.New(opts.Session)

    params := &cloudformation.ListTypesInput{}
    resources := make([]resource.Resource, 0)

    for {
        resp, err := svc.ListTypes(params)
        if err != nil {
            return nil, err
        }
        for _, typeSummary := range resp.TypeSummaries {
            resources = append(resources, &CloudFormationType{
                svc:         svc,
                typeSummary: typeSummary,
            })
        }

        if resp.NextToken == nil {
            break
        }

        params.NextToken = resp.NextToken
    }

    return resources, nil
}

type CloudFormationType struct {
    svc         cloudformationiface.CloudFormationAPI
    typeSummary *cloudformation.TypeSummary
}

func (cfs *CloudFormationType) findAllVersionSummaries() ([]*cloudformation.TypeVersionSummary, error) {
    typeVersionSummaries := make([]*cloudformation.TypeVersionSummary, 0)
    page := 0
    params := &cloudformation.ListTypeVersionsInput{
        Arn: cfs.typeSummary.TypeArn,
    }
    for {
        logrus.Infof("CloudFormationType loading type versions arn=%s page=%d", *cfs.typeSummary.TypeArn, page)
        resp, err := cfs.svc.ListTypeVersions(params)
        if err != nil {
            return nil, err
        }

        typeVersionSummaries = append(typeVersionSummaries, resp.TypeVersionSummaries...)
        if resp.NextToken == nil {
            return typeVersionSummaries, nil
        }

        params.NextToken = resp.NextToken
        page++
    }
}

func (cfs *CloudFormationType) Remove(_ context.Context) error {
    typeVersionSummaries, loadErr := cfs.findAllVersionSummaries()
    if loadErr != nil {
        return loadErr
    }

    failed := false
    for _, typeVersionSummary := range typeVersionSummaries {
        if *typeVersionSummary.IsDefaultVersion {
            logrus.Infof("CloudFormationType ignoring default version type=%s version=%s",
                *cfs.typeSummary.TypeArn, *typeVersionSummary.VersionId)
        } else {
            logrus.Infof("CloudFormationType removing type=%s version=%s",
                *cfs.typeSummary.TypeArn, *typeVersionSummary.VersionId)
            if _, err := cfs.svc.DeregisterType(&cloudformation.DeregisterTypeInput{
                VersionId: typeVersionSummary.VersionId,
                TypeName:  typeVersionSummary.TypeName,
                Type:      typeVersionSummary.Type,
            }); err != nil {
                logrus.Errorf("CloudFormationType failed removing type=%s version=%s type=%s arn=%s error=%s",
                    *cfs.typeSummary.TypeName, *typeVersionSummary.VersionId, *typeVersionSummary.Type,
                    *cfs.typeSummary.TypeArn, err.Error())
                failed = true
            }
        }
    }

    if failed {
        return fmt.Errorf("unable to remove all CloudFormationType versions arn=%s", *cfs.typeSummary.TypeArn)
    }

    _, err := cfs.svc.DeregisterType(&cloudformation.DeregisterTypeInput{
        Arn: cfs.typeSummary.TypeArn,
    })

    return err
}

func (cfs *CloudFormationType) Properties() types.Properties {
    properties := types.NewProperties()
    properties.Set("Name", cfs.typeSummary.TypeName)
    properties.Set("Type", cfs.typeSummary.Type)

    return properties
}

func (cfs *CloudFormationType) String() string {
    return *cfs.typeSummary.TypeArn
}