ekristen/aws-nuke

package resources

import (
    "context"

    "fmt"
    "strings"

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

    "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 ElasticacheCacheParameterGroupResource = "ElasticacheCacheParameterGroup"

func init() {
    registry.Register(&registry.Registration{
        Name:     ElasticacheCacheParameterGroupResource,
        Scope:    nuke.Account,
        Resource: &ElasticacheCacheParameterGroup{},
        Lister:   &ElasticacheCacheParameterGroupLister{},
    })
}

type ElasticacheCacheParameterGroupLister struct{}

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

    svc := elasticache.New(opts.Session)
    var resources []resource.Resource

    params := &elasticache.DescribeCacheParameterGroupsInput{MaxRecords: aws.Int64(100)}

    for {
        resp, err := svc.DescribeCacheParameterGroups(params)
        if err != nil {
            return nil, err
        }

        for _, cacheParameterGroup := range resp.CacheParameterGroups {
            resources = append(resources, &ElasticacheCacheParameterGroup{
                svc:         svc,
                groupName:   cacheParameterGroup.CacheParameterGroupName,
                groupFamily: cacheParameterGroup.CacheParameterGroupFamily,
            })
        }

        if resp.Marker == nil {
            break
        }

        params.Marker = resp.Marker
    }

    return resources, nil
}

type ElasticacheCacheParameterGroup struct {
    svc         *elasticache.ElastiCache
    groupName   *string
    groupFamily *string
}

func (i *ElasticacheCacheParameterGroup) Filter() error {
    if strings.HasPrefix(*i.groupName, "default.") {
        return fmt.Errorf("cannot delete default cache parameter group")
    }
    return nil
}

func (i *ElasticacheCacheParameterGroup) Remove(_ context.Context) error {
    params := &elasticache.DeleteCacheParameterGroupInput{
        CacheParameterGroupName: i.groupName,
    }

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

    return nil
}

func (i *ElasticacheCacheParameterGroup) String() string {
    return *i.groupName
}

func (i *ElasticacheCacheParameterGroup) Properties() types.Properties {
    properties := types.NewProperties()
    properties.
        Set("GroupName", i.groupName).
        Set("GroupFamily", i.groupFamily)
    return properties
}