57 lines
1.6 KiB
Go
57 lines
1.6 KiB
Go
package common
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import (
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"fmt"
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"github.com/aws/aws-sdk-go/service/ec2"
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"github.com/mitchellh/multistep"
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"github.com/mitchellh/packer/packer"
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)
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// StepSourceAMIInfo extracts critical information from the source AMI
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// that is used throughout the AMI creation process.
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//
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// Produces:
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// source_image *ec2.Image - the source AMI info
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type StepSourceAMIInfo struct {
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SourceAmi string
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EnhancedNetworking bool
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}
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func (s *StepSourceAMIInfo) Run(state multistep.StateBag) multistep.StepAction {
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ec2conn := state.Get("ec2").(*ec2.EC2)
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ui := state.Get("ui").(packer.Ui)
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ui.Say(fmt.Sprintf("Inspecting the source AMI (%s)...", s.SourceAmi))
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imageResp, err := ec2conn.DescribeImages(&ec2.DescribeImagesInput{ImageIds: []*string{&s.SourceAmi}})
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if err != nil {
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err := fmt.Errorf("Error querying AMI: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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if len(imageResp.Images) == 0 {
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err := fmt.Errorf("Source AMI '%s' was not found!", s.SourceAmi)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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image := imageResp.Images[0]
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// Enhanced Networking (SriovNetSupport) can only be enabled on HVM AMIs.
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// See http://goo.gl/icuXh5
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if s.EnhancedNetworking && *image.VirtualizationType != "hvm" {
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err := fmt.Errorf("Cannot enable enhanced networking, source AMI '%s' is not HVM", s.SourceAmi)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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state.Put("source_image", image)
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return multistep.ActionContinue
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}
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func (s *StepSourceAMIInfo) Cleanup(multistep.StateBag) {}
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