ekristen/gcp-nuke

package resources

import (
    "context"
    "errors"
    "github.com/gotidy/ptr"
    "github.com/sirupsen/logrus"

    "google.golang.org/api/iterator"

    compute "cloud.google.com/go/compute/apiv1"
    "cloud.google.com/go/compute/apiv1/computepb"

    "github.com/ekristen/libnuke/pkg/registry"
    "github.com/ekristen/libnuke/pkg/resource"
    "github.com/ekristen/libnuke/pkg/types"

    "github.com/ekristen/gcp-nuke/pkg/nuke"
)

const ComputeInstanceResource = "ComputeInstance"

func init() {
    registry.Register(&registry.Registration{
        Name:   ComputeInstanceResource,
        Scope:  nuke.Project,
        Lister: &ComputeInstanceLister{},
    })
}

type ComputeInstanceLister struct {
    svc *compute.InstancesClient
}

func (l *ComputeInstanceLister) List(ctx context.Context, o interface{}) ([]resource.Resource, error) {
    var resources []resource.Resource

    opts := o.(*nuke.ListerOpts)
    if err := opts.BeforeList(nuke.Regional, "compute.googleapis.com"); err != nil {
        return resources, err
    }

    if l.svc == nil {
        var err error
        l.svc, err = compute.NewInstancesRESTClient(ctx, opts.ClientOptions...)
        if err != nil {
            return nil, err
        }
    }

    for _, zone := range opts.Zones {
        req := &computepb.ListInstancesRequest{
            Project: *opts.Project,
            Zone:    zone,
        }

        it := l.svc.List(ctx, req)

        for {
            resp, err := it.Next()
            if errors.Is(err, iterator.Done) {
                break
            }
            if err != nil {
                logrus.WithError(err).Error("unable to iterate compute instances")
                break
            }

            resources = append(resources, &ComputeInstance{
                svc:               l.svc,
                Name:              resp.Name,
                Project:           opts.Project,
                Zone:              ptr.String(zone),
                CreationTimestamp: resp.CreationTimestamp,
                Labels:            resp.Labels,
            })
        }
    }

    return resources, nil
}

type ComputeInstance struct {
    svc               *compute.InstancesClient
    Project           *string
    Region            *string
    Name              *string
    Zone              *string
    CreationTimestamp *string
    Labels            map[string]string `property:"tagPrefix=label"`
}

func (r *ComputeInstance) Remove(ctx context.Context) error {
    _, err := r.svc.Delete(ctx, &computepb.DeleteInstanceRequest{
        Project:  *r.Project,
        Zone:     *r.Zone,
        Instance: *r.Name,
    })
    return err
}

func (r *ComputeInstance) Properties() types.Properties {
    return types.NewPropertiesFromStruct(r)
}

func (r *ComputeInstance) String() string {
    return *r.Name
}