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package common
import (
"context"
"fmt"
"strings"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/aws/aws-sdk-go/service/ec2/ec2iface"
"github.com/hashicorp/packer/packer-plugin-sdk/multistep"
packersdk "github.com/hashicorp/packer/packer-plugin-sdk/packer"
confighelper "github.com/hashicorp/packer/packer-plugin-sdk/template/config"
)
type StepModifyEBSBackedInstance struct {
Skip bool
EnableAMIENASupport confighelper.Trilean
EnableAMISriovNetSupport bool
}
func (s *StepModifyEBSBackedInstance) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
ec2conn := state.Get("ec2").(ec2iface.EC2API)
instance := state.Get("instance").(*ec2.Instance)
ui := state.Get("ui").(packersdk.Ui)
// Skip when it is a spot instance
if s.Skip {
return multistep.ActionContinue
}
// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
// As of February 2017, this applies to C3, C4, D2, I2, R3, and M4 (excluding m4.16xlarge)
if s.EnableAMISriovNetSupport {
ui.Say("Enabling Enhanced Networking (SR-IOV)...")
simple := "simple"
_, err := ec2conn.ModifyInstanceAttribute(&ec2.ModifyInstanceAttributeInput{
InstanceId: instance.InstanceId,
SriovNetSupport: &ec2.AttributeValue{Value: &simple},
})
if err != nil {
err := fmt.Errorf("Error enabling Enhanced Networking (SR-IOV) on %s: %s", *instance.InstanceId, err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
}
// Handle EnaSupport flag.
// As of February 2017, this applies to C5, I3, P2, R4, X1, and m4.16xlarge
if s.EnableAMIENASupport != confighelper.TriUnset {
var prefix string
if s.EnableAMIENASupport.True() {
prefix = "En"
} else {
prefix = "Dis"
}
ui.Say(fmt.Sprintf("%sabling Enhanced Networking (ENA)...", prefix))
_, err := ec2conn.ModifyInstanceAttribute(&ec2.ModifyInstanceAttributeInput{
InstanceId: instance.InstanceId,
EnaSupport: &ec2.AttributeBooleanValue{Value: s.EnableAMIENASupport.ToBoolPointer()},
})
if err != nil {
err := fmt.Errorf("Error %sabling Enhanced Networking (ENA) on %s: %s", strings.ToLower(prefix), *instance.InstanceId, err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
}
return multistep.ActionContinue
}
func (s *StepModifyEBSBackedInstance) Cleanup(state multistep.StateBag) {
// No cleanup...
}
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