135 lines
3.6 KiB
Go
135 lines
3.6 KiB
Go
package common
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import (
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"context"
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"fmt"
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"os"
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"runtime"
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"time"
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"github.com/aws/aws-sdk-go/service/ec2"
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"github.com/hashicorp/packer/common/retry"
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"github.com/hashicorp/packer/helper/communicator"
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"github.com/hashicorp/packer/helper/multistep"
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"github.com/hashicorp/packer/packer"
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)
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type StepKeyPair struct {
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Debug bool
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Comm *communicator.Config
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DebugKeyPath string
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doCleanup bool
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}
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func (s *StepKeyPair) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
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ui := state.Get("ui").(packer.Ui)
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if s.Comm.SSHPrivateKeyFile != "" {
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ui.Say("Using existing SSH private key")
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privateKeyBytes, err := s.Comm.ReadSSHPrivateKeyFile()
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if err != nil {
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state.Put("error", err)
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return multistep.ActionHalt
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}
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s.Comm.SSHPrivateKey = privateKeyBytes
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return multistep.ActionContinue
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}
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if s.Comm.SSHAgentAuth && s.Comm.SSHKeyPairName == "" {
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ui.Say("Using SSH Agent with key pair in Source AMI")
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return multistep.ActionContinue
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}
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if s.Comm.SSHAgentAuth && s.Comm.SSHKeyPairName != "" {
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ui.Say(fmt.Sprintf("Using SSH Agent for existing key pair %s", s.Comm.SSHKeyPairName))
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return multistep.ActionContinue
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}
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if s.Comm.SSHTemporaryKeyPairName == "" {
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ui.Say("Not using temporary keypair")
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s.Comm.SSHKeyPairName = ""
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return multistep.ActionContinue
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}
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ec2conn := state.Get("ec2").(*ec2.EC2)
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var keyResp *ec2.CreateKeyPairOutput
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ui.Say(fmt.Sprintf("Creating temporary keypair: %s", s.Comm.SSHTemporaryKeyPairName))
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err := retry.Config{
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Tries: 11,
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RetryDelay: (&retry.Backoff{InitialBackoff: 200 * time.Millisecond, MaxBackoff: 30 * time.Second, Multiplier: 2}).Linear,
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}.Run(ctx, func(ctx context.Context) error {
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var err error
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keyResp, err = ec2conn.CreateKeyPair(&ec2.CreateKeyPairInput{
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KeyName: &s.Comm.SSHTemporaryKeyPairName})
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return err
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})
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if err != nil {
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state.Put("error", fmt.Errorf("Error creating temporary keypair: %s", err))
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return multistep.ActionHalt
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}
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s.doCleanup = true
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// Set some data for use in future steps
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s.Comm.SSHKeyPairName = s.Comm.SSHTemporaryKeyPairName
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s.Comm.SSHPrivateKey = []byte(*keyResp.KeyMaterial)
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// If we're in debug mode, output the private key to the working
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// directory.
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if s.Debug {
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ui.Message(fmt.Sprintf("Saving key for debug purposes: %s", s.DebugKeyPath))
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f, err := os.Create(s.DebugKeyPath)
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if err != nil {
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state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
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return multistep.ActionHalt
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}
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defer f.Close()
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// Write the key out
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if _, err := f.Write([]byte(*keyResp.KeyMaterial)); err != nil {
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state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
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return multistep.ActionHalt
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}
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// Chmod it so that it is SSH ready
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if runtime.GOOS != "windows" {
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if err := f.Chmod(0600); err != nil {
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state.Put("error", fmt.Errorf("Error setting permissions of debug key: %s", err))
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return multistep.ActionHalt
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}
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}
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}
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return multistep.ActionContinue
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}
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func (s *StepKeyPair) Cleanup(state multistep.StateBag) {
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if !s.doCleanup {
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return
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}
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ec2conn := state.Get("ec2").(*ec2.EC2)
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ui := state.Get("ui").(packer.Ui)
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// Remove the keypair
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ui.Say("Deleting temporary keypair...")
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_, err := ec2conn.DeleteKeyPair(&ec2.DeleteKeyPairInput{KeyName: &s.Comm.SSHTemporaryKeyPairName})
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if err != nil {
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ui.Error(fmt.Sprintf(
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"Error cleaning up keypair. Please delete the key manually: %s", s.Comm.SSHTemporaryKeyPairName))
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}
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// Also remove the physical key if we're debugging.
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if s.Debug {
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if err := os.Remove(s.DebugKeyPath); err != nil {
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ui.Error(fmt.Sprintf(
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"Error removing debug key '%s': %s", s.DebugKeyPath, err))
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}
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}
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}
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