ekristen/aws-nuke

package resources

import (
    "context"
    "fmt"
    "strings"

    "github.com/sirupsen/logrus"

    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/service/elasticache"
    "github.com/aws/aws-sdk-go/service/elasticache/elasticacheiface"

    "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 ElasticacheSubnetGroupResource = "ElasticacheSubnetGroup"

func init() {
    registry.Register(&registry.Registration{
        Name:     ElasticacheSubnetGroupResource,
        Scope:    nuke.Account,
        Resource: &ElasticacheSubnetGroup{},
        Lister:   &ElasticacheSubnetGroupLister{},
    })
}

type ElasticacheSubnetGroupLister struct {
    mockSvc elasticacheiface.ElastiCacheAPI
}

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

    var svc elasticacheiface.ElastiCacheAPI
    if l.mockSvc != nil {
        svc = l.mockSvc
    } else {
        svc = elasticache.New(opts.Session)
    }

    params := &elasticache.DescribeCacheSubnetGroupsInput{MaxRecords: aws.Int64(100)}
    resp, err := svc.DescribeCacheSubnetGroups(params)
    if err != nil {
        return nil, err
    }

    var resources []resource.Resource
    for _, subnetGroup := range resp.CacheSubnetGroups {
        tags, err := svc.ListTagsForResource(&elasticache.ListTagsForResourceInput{
            ResourceName: subnetGroup.ARN,
        })
        if err != nil {
            logrus.WithError(err).Error("unable to retrieve tags")
            continue
        }

        resources = append(resources, &ElasticacheSubnetGroup{
            svc:  svc,
            name: subnetGroup.CacheSubnetGroupName,
            Tags: tags.TagList,
        })
    }

    return resources, nil
}

type ElasticacheSubnetGroup struct {
    svc  elasticacheiface.ElastiCacheAPI
    name *string
    Tags []*elasticache.Tag
}

func (i *ElasticacheSubnetGroup) Filter() error {
    if strings.HasPrefix(*i.name, "default") {
        return fmt.Errorf("cannot delete default subnet group")
    }
    return nil
}

func (i *ElasticacheSubnetGroup) Properties() types.Properties {
    properties := types.NewProperties()

    properties.Set("Name", i.name)

    for _, tag := range i.Tags {
        properties.SetTag(tag.Key, tag.Value)
    }

    return properties
}

func (i *ElasticacheSubnetGroup) Remove(_ context.Context) error {
    params := &elasticache.DeleteCacheSubnetGroupInput{
        CacheSubnetGroupName: i.name,
    }

    _, err := i.svc.DeleteCacheSubnetGroup(params)
    if err != nil {
        return err
    }

    return nil
}

func (i *ElasticacheSubnetGroup) String() string {
    return *i.name
}