github.com/jerryclinesmith/packer@v0.3.7/builder/amazon/common/step_key_pair.go (about)

     1  package common
     2  
     3  import (
     4  	"fmt"
     5  	"github.com/mitchellh/goamz/ec2"
     6  	"github.com/mitchellh/multistep"
     7  	"github.com/mitchellh/packer/packer"
     8  	"os"
     9  	"runtime"
    10  )
    11  
    12  type StepKeyPair struct {
    13  	Debug        bool
    14  	DebugKeyPath string
    15  	KeyPairName  string
    16  
    17  	keyName string
    18  }
    19  
    20  func (s *StepKeyPair) Run(state multistep.StateBag) multistep.StepAction {
    21  	ec2conn := state.Get("ec2").(*ec2.EC2)
    22  	ui := state.Get("ui").(packer.Ui)
    23  
    24  	ui.Say(fmt.Sprintf("Creating temporary keypair: %s", s.KeyPairName))
    25  	keyResp, err := ec2conn.CreateKeyPair(s.KeyPairName)
    26  	if err != nil {
    27  		state.Put("error", fmt.Errorf("Error creating temporary keypair: %s", err))
    28  		return multistep.ActionHalt
    29  	}
    30  
    31  	// Set the keyname so we know to delete it later
    32  	s.keyName = s.KeyPairName
    33  
    34  	// Set some state data for use in future steps
    35  	state.Put("keyPair", s.keyName)
    36  	state.Put("privateKey", keyResp.KeyMaterial)
    37  
    38  	// If we're in debug mode, output the private key to the working
    39  	// directory.
    40  	if s.Debug {
    41  		ui.Message(fmt.Sprintf("Saving key for debug purposes: %s", s.DebugKeyPath))
    42  		f, err := os.Create(s.DebugKeyPath)
    43  		if err != nil {
    44  			state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
    45  			return multistep.ActionHalt
    46  		}
    47  		defer f.Close()
    48  
    49  		// Write the key out
    50  		if _, err := f.Write([]byte(keyResp.KeyMaterial)); err != nil {
    51  			state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
    52  			return multistep.ActionHalt
    53  		}
    54  
    55  		// Chmod it so that it is SSH ready
    56  		if runtime.GOOS != "windows" {
    57  			if err := f.Chmod(0600); err != nil {
    58  				state.Put("error", fmt.Errorf("Error setting permissions of debug key: %s", err))
    59  				return multistep.ActionHalt
    60  			}
    61  		}
    62  	}
    63  
    64  	return multistep.ActionContinue
    65  }
    66  
    67  func (s *StepKeyPair) Cleanup(state multistep.StateBag) {
    68  	// If no key name is set, then we never created it, so just return
    69  	if s.keyName == "" {
    70  		return
    71  	}
    72  
    73  	ec2conn := state.Get("ec2").(*ec2.EC2)
    74  	ui := state.Get("ui").(packer.Ui)
    75  
    76  	ui.Say("Deleting temporary keypair...")
    77  	_, err := ec2conn.DeleteKeyPair(s.keyName)
    78  	if err != nil {
    79  		ui.Error(fmt.Sprintf(
    80  			"Error cleaning up keypair. Please delete the key manually: %s", s.keyName))
    81  	}
    82  }