Google: Add IPv6 support

cmd/drone-autoscaler/main.go

@@ -240,6 +240,7 @@ func setupProvider(c config.Config) (autoscaler.Provider, error) {
 			google.WithLabels(c.Google.Labels),
 			google.WithNetwork(c.Google.Network),
 			google.WithSubnetwork(c.Google.Subnetwork),
+			google.WithStackType(c.Google.StackType),
 			google.WithPrivateIP(c.Google.PrivateIP),
 			google.WithServiceAccountEmail(c.Google.ServiceAccountEmail),
 			google.WithProject(c.Google.Project),

config/config.go

@@ -162,6 +162,7 @@ type (
 			MachineImage        string            `envconfig:"DRONE_GOOGLE_MACHINE_IMAGE"`
 			Network             string            `envconfig:"DRONE_GOOGLE_NETWORK"`
 			Subnetwork          string            `envconfig:"DRONE_GOOGLE_SUBNETWORK"`
+			StackType           string            `envconfig:"DRONE_GOOGLE_STACK_TYPE"`
 			Labels              map[string]string `envconfig:"DRONE_GOOGLE_LABELS"`
 			Scopes              []string          `envconfig:"DRONE_GOOGLE_SCOPES"`
 			ServiceAccountEmail string            `envconfig:"DRONE_GOOGLE_SERVICE_ACCOUNT_EMAIL"`

drivers/google/create.go

@@ -43,7 +43,6 @@ func (p *provider) Create(ctx context.Context, opts autoscaler.InstanceCreateOpt
 	logger.Debugln("instance insert")
 
 	networkConfig := []*compute.AccessConfig{}
-
 	if !p.privateIP {
 		networkConfig = []*compute.AccessConfig{
 			{
@@ -88,6 +87,7 @@ func (p *provider) Create(ctx context.Context, opts autoscaler.InstanceCreateOpt
 			{
 				Network:       p.network,
 				Subnetwork:    p.subnetwork,
+				StackType:     p.stackType,
 				AccessConfigs: networkConfig,
 			},
 		},
@@ -106,6 +106,18 @@ func (p *provider) Create(ctx context.Context, opts autoscaler.InstanceCreateOpt
 		},
 	}
 
+	// Cannot add this in the same way as v4 access configs since the instance creation
+	// fails if any v6 access configs are specified for an instance with IPV4_ONLY stack type
+	if p.stackType == "IPV4_IPV6" {
+		in.NetworkInterfaces[0].Ipv6AccessConfigs = []*compute.AccessConfig{
+			{
+				Name:        "external-ipv6",
+				Type:        "DIRECT_IPV6",
+				NetworkTier: "PREMIUM",
+			},
+		}
+	}
+
 	op, err := p.service.Instances.Insert(p.project, zone, in).Do()
 	if err != nil {
 		logger.WithError(err).

drivers/google/create_test.go

@@ -154,7 +154,8 @@ var insertInstanceMock = &compute.Instance{
 	CanIpForward: false,
 	NetworkInterfaces: []*compute.NetworkInterface{
 		{
-			Network: "global/networks/default",
+			Network:   "global/networks/default",
+			StackType: "IPV4_ONLY",
 			AccessConfigs: []*compute.AccessConfig{
 				{
 					Name: "External NAT",
@@ -216,7 +217,8 @@ var insertInstanceMockB = &compute.Instance{
 	CanIpForward: false,
 	NetworkInterfaces: []*compute.NetworkInterface{
 		{
-			Network: "global/networks/default",
+			Network:   "global/networks/default",
+			StackType: "IPV4_ONLY",
 			AccessConfigs: []*compute.AccessConfig{
 				{
 					Name: "External NAT",

drivers/google/option.go

@@ -80,6 +80,13 @@ func WithSubnetwork(subnetwork string) Option {
 	}
 }
 
+// WithStackType returns an option to set the stack type for the instance.
+func WithStackType(stackType string) Option {
+	return func(p *provider) {
+		p.stackType = stackType
+	}
+}
+
 // WithPrivateIP returns an option to set the private IP address.
 func WithPrivateIP(private bool) Option {
 	return func(p *provider) {

drivers/google/provider.go

@@ -44,6 +44,7 @@ type provider struct {
 	labels              map[string]string
 	network             string
 	subnetwork          string
+	stackType           string
 	project             string
 	privateIP           bool
 	scopes              []string
@@ -83,6 +84,9 @@ func New(opts ...Option) (autoscaler.Provider, error) {
 	if p.network == "" {
 		p.network = "global/networks/default"
 	}
+	if p.stackType == "" {
+		p.stackType = "IPV4_ONLY"
+	}
 	if p.userdata == nil {
 		p.userdata = userdata.T
 	}

go.mod

@@ -6,8 +6,11 @@ replace github.com/docker/docker => github.com/docker/engine v17.12.0-ce-rc1.0.2
 
 require (
 	github.com/99designs/basicauth-go v0.0.0-20160802081356-2a93ba0f464d
+	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
+	github.com/Microsoft/go-winio v0.4.7 // indirect
 	github.com/avast/retry-go v3.0.0+incompatible
 	github.com/aws/aws-sdk-go v1.44.205
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bluele/slack v0.0.0-20171128075526-307046097ee9
 	github.com/dchest/uniuri v0.0.0-20160212164326-8902c56451e9
 	github.com/digitalocean/godo v1.1.1
@@ -20,10 +23,14 @@ require (
 	github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4
 	github.com/go-chi/chi v3.3.2+incompatible
 	github.com/go-sql-driver/mysql v1.3.0
-	github.com/golang/mock v1.4.4
-	github.com/google/go-cmp v0.5.8
+	github.com/gogo/protobuf v1.1.1 // indirect
+	github.com/golang/mock v1.6.0
+	github.com/google/go-cmp v0.5.9
+	github.com/google/go-querystring v0.0.0-20170111101155-53e6ce116135 // indirect
+	github.com/google/uuid v1.3.0 // indirect
 	github.com/gophercloud/gophercloud v0.0.0-20181014043407-c8947f7d1c51
-	github.com/h2non/gock v1.0.7
+	github.com/gorilla/mux v1.7.4 // indirect
+	github.com/h2non/gock v1.2.0
 	github.com/hetznercloud/hcloud-go v1.4.0
 	github.com/jmoiron/sqlx v0.0.0-20180228184624-cf35089a1979
 	github.com/joho/godotenv v1.2.0
@@ -35,50 +42,49 @@ require (
 	github.com/scaleway/scaleway-sdk-go v1.0.0-beta.3
 	github.com/sirupsen/logrus v1.6.0
 	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519
-	golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b
-	golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4
-	golang.org/x/time v0.0.0-20220224211638-0e9765cccd65
-	google.golang.org/api v0.30.0
+	golang.org/x/oauth2 v0.5.0
+	golang.org/x/sync v0.1.0
+	golang.org/x/time v0.1.0
+	google.golang.org/api v0.110.0
 )
 
 require (
-	cloud.google.com/go v0.65.0 // indirect
-	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
-	github.com/Microsoft/go-winio v0.4.7 // indirect
-	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	cloud.google.com/go/compute v1.18.0 // indirect
+	cloud.google.com/go/compute/metadata v0.2.3 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/containerd/containerd v1.3.4 // indirect
 	github.com/docker/distribution v0.0.0-20170726174610-edc3ab29cdff // indirect
 	github.com/docker/go-units v0.4.0 // indirect
-	github.com/gogo/protobuf v1.1.1 // indirect
 	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/google/go-querystring v0.0.0-20170111101155-53e6ce116135 // indirect
-	github.com/googleapis/gax-go/v2 v2.0.5 // indirect
-	github.com/gorilla/mux v1.7.4 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.2.3 // indirect
+	github.com/googleapis/gax-go/v2 v2.7.0 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
 	github.com/konsorten/go-windows-terminal-sequences v1.0.3 // indirect
 	github.com/kr/text v0.1.0 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
-	github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32 // indirect
 	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
 	github.com/opencontainers/image-spec v1.0.1 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
 	github.com/prometheus/common v0.37.0 // indirect
 	github.com/prometheus/procfs v0.8.0 // indirect
 	github.com/tent/http-link-go v0.0.0-20130702225549-ac974c61c2f9 // indirect
-	go.opencensus.io v0.22.4 // indirect
-	golang.org/x/net v0.1.0 // indirect
-	golang.org/x/sys v0.1.0 // indirect
-	golang.org/x/text v0.4.0 // indirect
-	google.golang.org/appengine v1.6.6 // indirect
-	google.golang.org/genproto v0.0.0-20200825200019-8632dd797987 // indirect
-	google.golang.org/grpc v1.31.0 // indirect
+	gotest.tools v2.2.0+incompatible // indirect
+)
+
+require (
+	github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	golang.org/x/net v0.6.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/text v0.7.0 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/genproto v0.0.0-20230209215440-0dfe4f8abfcc // indirect
+	google.golang.org/grpc v1.53.0 // indirect
 	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	gotest.tools v2.2.0+incompatible // indirect
 	launchpad.net/gocheck v0.0.0-20140225173054-000000000087 // indirect
 	sigs.k8s.io/yaml v1.2.0 // indirect
 )