ekristen/aws-nuke

package resources

import (
    "context"
    "fmt"

    "github.com/gotidy/ptr"

    "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 EC2RouteTableResource = "EC2RouteTable"

func init() {
    registry.Register(&registry.Registration{
        Name:     EC2RouteTableResource,
        Scope:    nuke.Account,
        Resource: &EC2RouteTable{},
        Lister:   &EC2RouteTableLister{},
        DependsOn: []string{
            EC2SubnetResource,
        },
    })
}

type EC2RouteTableLister struct{}

func (l *EC2RouteTableLister) List(_ context.Context, o interface{}) ([]resource.Resource, error) {
    opts := o.(*nuke.ListerOpts)

    svc := ec2.New(opts.Session)

    resp, err := svc.DescribeRouteTables(nil)
    if err != nil {
        return nil, err
    }

    defVpcID := ""
    if defVpc := DefaultVpc(svc); defVpc != nil {
        defVpcID = ptr.ToString(defVpc.VpcId)
    }

    resources := make([]resource.Resource, 0)
    for _, out := range resp.RouteTables {
        vpc, err := GetVPC(svc, out.VpcId)
        if err != nil {
            return resources, nil
        }

        resources = append(resources, &EC2RouteTable{
            svc:        svc,
            routeTable: out,
            defaultVPC: defVpcID == ptr.ToString(out.VpcId),
            vpc:        vpc,
            ownerID:    out.OwnerId,
        })
    }

    return resources, nil
}

type EC2RouteTable struct {
    svc        *ec2.EC2
    routeTable *ec2.RouteTable
    defaultVPC bool
    vpc        *ec2.Vpc
    ownerID    *string
}

func (e *EC2RouteTable) Filter() error {
    for _, association := range e.routeTable.Associations {
        if *association.Main {
            return fmt.Errorf("main route tables cannot be deleted")
        }
    }

    return nil
}

func (e *EC2RouteTable) Remove(_ context.Context) error {
    params := &ec2.DeleteRouteTableInput{
        RouteTableId: e.routeTable.RouteTableId,
    }

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

    return nil
}

func (e *EC2RouteTable) Properties() types.Properties {
    properties := types.NewProperties()

    properties.Set("DefaultVPC", e.defaultVPC)
    properties.Set("OwnerID", e.ownerID)
    properties.Set("vpcID", e.vpc.VpcId) // TODO: deprecate and remove this
    properties.SetWithPrefix("vpc", "ID", e.vpc.VpcId)

    for _, tagValue := range e.routeTable.Tags {
        properties.SetTag(tagValue.Key, tagValue.Value)
    }

    for _, tagValue := range e.vpc.Tags {
        properties.SetTagWithPrefix("vpc", tagValue.Key, tagValue.Value)
    }

    return properties
}

func (e *EC2RouteTable) String() string {
    return ptr.ToString(e.routeTable.RouteTableId)
}