ekristen/aws-nuke

package resources

import (
    "context"

    "fmt"
    "time"

    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/service/ec2"

    "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 EC2SnapshotResource = "EC2Snapshot"

func init() {
    registry.Register(&registry.Registration{
        Name:     EC2SnapshotResource,
        Scope:    nuke.Account,
        Resource: &EC2Snapshot{},
        Lister:   &EC2SnapshotLister{},
        DependsOn: []string{
            EC2ImageResource,
        },
    })
}

type EC2SnapshotLister struct{}

func (l *EC2SnapshotLister) List(_ context.Context, o interface{}) ([]resource.Resource, error) {
    opts := o.(*nuke.ListerOpts)

    svc := ec2.New(opts.Session)
    params := &ec2.DescribeSnapshotsInput{
        OwnerIds: []*string{
            aws.String("self"),
        },
    }
    resp, err := svc.DescribeSnapshots(params)
    if err != nil {
        return nil, err
    }

    resources := make([]resource.Resource, 0)
    for _, out := range resp.Snapshots {
        resources = append(resources, &EC2Snapshot{
            svc:       svc,
            id:        *out.SnapshotId,
            startTime: out.StartTime,
            tags:      out.Tags,
        })
    }

    return resources, nil
}

type EC2Snapshot struct {
    svc       *ec2.EC2
    id        string
    startTime *time.Time
    tags      []*ec2.Tag
}

func (e *EC2Snapshot) Properties() types.Properties {
    properties := types.NewProperties()
    properties.Set("StartTime", e.startTime.Format(time.RFC3339))

    for _, tagValue := range e.tags {
        properties.Set(fmt.Sprintf("tag:%v", *tagValue.Key), tagValue.Value)
    }
    return properties
}

func (e *EC2Snapshot) Remove(_ context.Context) error {
    _, err := e.svc.DeleteSnapshot(&ec2.DeleteSnapshotInput{
        SnapshotId: &e.id,
    })
    return err
}

func (e *EC2Snapshot) String() string {
    return e.id
}