Spotinst: Add support for blacklisting or whitelisting instance types in Ocean

pkg/model/spotinstmodel/instance_group.go

@@ -61,6 +61,12 @@ const (
 	// Launch Spec for the Ocean cluster.
 	InstanceGroupLabelOceanDefaultLaunchSpec = "spotinst.io/ocean-default-launchspec"
 
+	// InstanceGroupLabelOceanInstanceTypes[White|Black]list are the metadata labels
+	// used on the instance group to specify whether to whitelist or blacklist
+	// specific instance types.
+	InstanceGroupLabelOceanInstanceTypesWhitelist = "spotinst.io/ocean-instance-types-whitelist"
+	InstanceGroupLabelOceanInstanceTypesBlacklist = "spotinst.io/ocean-instance-types-blacklist"
+
 	// InstanceGroupLabelAutoScalerDisabled is the metadata label used on the
 	// instance group to specify whether the auto scaler should be enabled.
 	InstanceGroupLabelAutoScalerDisabled = "spotinst.io/autoscaler-disabled"
@@ -320,7 +326,7 @@ func (b *InstanceGroupModelBuilder) buildOcean(c *fi.ModelBuilderContext, igs ..
 	// Image.
 	ocean.ImageID = fi.String(ig.Spec.Image)
 
-	// Strategy.
+	// Strategy and instance types.
 	for k, v := range ig.ObjectMeta.Labels {
 		switch k {
 		case InstanceGroupLabelSpotPercentage:
@@ -340,6 +346,18 @@ func (b *InstanceGroupModelBuilder) buildOcean(c *fi.ModelBuilderContext, igs ..
 			if err != nil {
 				return err
 			}
+
+		case InstanceGroupLabelOceanInstanceTypesWhitelist:
+			ocean.InstanceTypesWhitelist, err = parseStringSlice(v)
+			if err != nil {
+				return err
+			}
+
+		case InstanceGroupLabelOceanInstanceTypesBlacklist:
+			ocean.InstanceTypesBlacklist, err = parseStringSlice(v)
+			if err != nil {
+				return err
+			}
 		}
 	}
 
@@ -760,6 +778,14 @@ func parseInt(str string) (*int64, error) {
 	return &v, nil
 }
 
+func parseStringSlice(str string) ([]string, error) {
+	v := strings.Split(str, ",")
+	for i, s := range v {
+		v[i] = strings.TrimSpace(s)
+	}
+	return v, nil
+}
+
 func defaultSpotPercentage(ig *kops.InstanceGroup) *float64 {
 	var percentage float64
 

upup/pkg/fi/cloudup/spotinsttasks/ocean.go

@@ -46,7 +46,8 @@ type Ocean struct {
 	SpotPercentage           *float64
 	UtilizeReservedInstances *bool
 	FallbackToOnDemand       *bool
-	InstanceTypes            []string
+	InstanceTypesWhitelist   []string
+	InstanceTypesBlacklist   []string
 	Tags                     map[string]string
 	UserData                 *fi.ResourceHolder
 	ImageID                  *string
@@ -166,8 +167,14 @@ func (o *Ocean) Find(c *fi.Context) (*Ocean, error) {
 		// Instance types.
 		{
 			if itypes := compute.InstanceTypes; itypes != nil {
-				if itypes.Whitelist != nil && len(itypes.Whitelist) > 0 {
-					actual.InstanceTypes = itypes.Whitelist
+				// Whitelist.
+				if len(itypes.Whitelist) > 0 {
+					actual.InstanceTypesWhitelist = itypes.Whitelist
+				}
+
+				// Blacklist.
+				if len(itypes.Blacklist) > 0 {
+					actual.InstanceTypesBlacklist = itypes.Blacklist
 				}
 			}
 		}
@@ -361,6 +368,25 @@ func (_ *Ocean) create(cloud awsup.AWSCloud, a, e, changes *Ocean) error {
 			}
 		}
 
+		// Instance types.
+		{
+			itypes := new(aws.InstanceTypes)
+
+			// Whitelist.
+			if e.InstanceTypesWhitelist != nil {
+				itypes.SetWhitelist(e.InstanceTypesWhitelist)
+			}
+
+			// Blacklist.
+			if e.InstanceTypesBlacklist != nil {
+				itypes.SetBlacklist(e.InstanceTypesBlacklist)
+			}
+
+			if len(itypes.Whitelist) > 0 || len(itypes.Blacklist) > 0 {
+				ocean.Compute.SetInstanceTypes(itypes)
+			}
+		}
+
 		// Launch specification.
 		{
 			ocean.Compute.LaunchSpecification.SetMonitoring(e.Monitoring)
@@ -583,17 +609,36 @@ func (_ *Ocean) update(cloud awsup.AWSCloud, a, e, changes *Ocean) error {
 
 		// Instance types.
 		{
-			if changes.InstanceTypes != nil {
-				if ocean.Compute == nil {
-					ocean.Compute = new(aws.Compute)
-				}
-				if ocean.Compute.InstanceTypes == nil {
-					ocean.Compute.InstanceTypes = new(aws.InstanceTypes)
+			// Whitelist.
+			{
+				if changes.InstanceTypesWhitelist != nil {
+					if ocean.Compute == nil {
+						ocean.Compute = new(aws.Compute)
+					}
+					if ocean.Compute.InstanceTypes == nil {
+						ocean.Compute.InstanceTypes = new(aws.InstanceTypes)
+					}
+
+					ocean.Compute.InstanceTypes.SetWhitelist(e.InstanceTypesWhitelist)
+					changes.InstanceTypesWhitelist = nil
+					changed = true
 				}
+			}
 
-				ocean.Compute.InstanceTypes.SetWhitelist(e.InstanceTypes)
-				changes.InstanceTypes = nil
-				changed = true
+			// Blacklist.
+			{
+				if changes.InstanceTypesBlacklist != nil {
+					if ocean.Compute == nil {
+						ocean.Compute = new(aws.Compute)
+					}
+					if ocean.Compute.InstanceTypes == nil {
+						ocean.Compute.InstanceTypes = new(aws.InstanceTypes)
+					}
+
+					ocean.Compute.InstanceTypes.SetBlacklist(e.InstanceTypesBlacklist)
+					changes.InstanceTypesBlacklist = nil
+					changed = true
+				}
 			}
 		}
 
@@ -868,13 +913,15 @@ func (_ *Ocean) update(cloud awsup.AWSCloud, a, e, changes *Ocean) error {
 }
 
 type terraformOcean struct {
-	Name                *string              `json:"name,omitempty"`
-	ControllerClusterID *string              `json:"controller_id,omitempty"`
-	Region              *string              `json:"region,omitempty"`
-	SubnetIDs           []*terraform.Literal `json:"subnet_ids,omitempty"`
-	AutoScaler          *terraformAutoScaler `json:"autoscaler,omitempty"`
-	Tags                []*terraformKV       `json:"tags,omitempty"`
-	Lifecycle           *terraformLifecycle  `json:"lifecycle,omitempty"`
+	Name                   *string              `json:"name,omitempty"`
+	ControllerClusterID    *string              `json:"controller_id,omitempty"`
+	Region                 *string              `json:"region,omitempty"`
+	InstanceTypesWhitelist []string             `json:"whitelist,omitempty"`
+	InstanceTypesBlacklist []string             `json:"blacklist,omitempty"`
+	SubnetIDs              []*terraform.Literal `json:"subnet_ids,omitempty"`
+	AutoScaler             *terraformAutoScaler `json:"autoscaler,omitempty"`
+	Tags                   []*terraformKV       `json:"tags,omitempty"`
+	Lifecycle              *terraformLifecycle  `json:"lifecycle,omitempty"`
 
 	*terraformOceanCapacity
 	*terraformOceanStrategy
@@ -1013,6 +1060,19 @@ func (_ *Ocean) RenderTerraform(t *terraform.TerraformTarget, a, e, changes *Oce
 		}
 	}
 
+	// Instance types.
+	{
+		// Whitelist.
+		if e.InstanceTypesWhitelist != nil {
+			tf.InstanceTypesWhitelist = e.InstanceTypesWhitelist
+		}
+
+		// Blacklist.
+		if e.InstanceTypesBlacklist != nil {
+			tf.InstanceTypesBlacklist = e.InstanceTypesBlacklist
+		}
+	}
+
 	// Auto Scaler.
 	{
 		if opts := e.AutoScalerOpts; opts != nil {