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package common
import (
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/hashicorp/packer/packer"
"github.com/mitchellh/multistep"
)
type StepModifyEBSBackedInstance struct {
EnableAMIENASupport bool
EnableAMISriovNetSupport bool
}
func (s *StepModifyEBSBackedInstance) Run(state multistep.StateBag) multistep.StepAction {
ec2conn := state.Get("ec2").(*ec2.EC2)
instance := state.Get("instance").(*ec2.Instance)
ui := state.Get("ui").(packer.Ui)
// 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
}
}
// Set EnaSupport to true.
// As of February 2017, this applies to C5, I3, P2, R4, X1, and m4.16xlarge
if s.EnableAMIENASupport {
ui.Say("Enabling Enhanced Networking (ENA)...")
_, err := ec2conn.ModifyInstanceAttribute(&ec2.ModifyInstanceAttributeInput{
InstanceId: instance.InstanceId,
EnaSupport: &ec2.AttributeBooleanValue{Value: aws.Bool(true)},
})
if err != nil {
err := fmt.Errorf("Error enabling Enhanced Networking (ENA) on %s: %s", *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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