github.com/kimor79/packer@v0.8.7-0.20151221212622-d507b18eb4cf/builder/openstack/step_key_pair.go (about)

     1  package openstack
     2  
     3  import (
     4  	"fmt"
     5  	"io/ioutil"
     6  	"os"
     7  	"runtime"
     8  
     9  	"github.com/mitchellh/multistep"
    10  	"github.com/mitchellh/packer/common/uuid"
    11  	"github.com/mitchellh/packer/packer"
    12  	"github.com/rackspace/gophercloud/openstack/compute/v2/extensions/keypairs"
    13  )
    14  
    15  type StepKeyPair struct {
    16  	Debug          bool
    17  	DebugKeyPath   string
    18  	KeyPairName    string
    19  	PrivateKeyFile string
    20  
    21  	keyName string
    22  }
    23  
    24  func (s *StepKeyPair) Run(state multistep.StateBag) multistep.StepAction {
    25  	if s.PrivateKeyFile != "" {
    26  		privateKeyBytes, err := ioutil.ReadFile(s.PrivateKeyFile)
    27  		if err != nil {
    28  			state.Put("error", fmt.Errorf(
    29  				"Error loading configured private key file: %s", err))
    30  			return multistep.ActionHalt
    31  		}
    32  
    33  		state.Put("keyPair", s.KeyPairName)
    34  		state.Put("privateKey", string(privateKeyBytes))
    35  
    36  		return multistep.ActionContinue
    37  	}
    38  
    39  	config := state.Get("config").(Config)
    40  	ui := state.Get("ui").(packer.Ui)
    41  
    42  	// We need the v2 compute client
    43  	computeClient, err := config.computeV2Client()
    44  	if err != nil {
    45  		err = fmt.Errorf("Error initializing compute client: %s", err)
    46  		state.Put("error", err)
    47  		return multistep.ActionHalt
    48  	}
    49  
    50  	keyName := fmt.Sprintf("packer %s", uuid.TimeOrderedUUID())
    51  	ui.Say(fmt.Sprintf("Creating temporary keypair: %s ...", keyName))
    52  	keypair, err := keypairs.Create(computeClient, keypairs.CreateOpts{
    53  		Name: keyName,
    54  	}).Extract()
    55  	if err != nil {
    56  		state.Put("error", fmt.Errorf("Error creating temporary keypair: %s", err))
    57  		return multistep.ActionHalt
    58  	}
    59  
    60  	if keypair.PrivateKey == "" {
    61  		state.Put("error", fmt.Errorf("The temporary keypair returned was blank"))
    62  		return multistep.ActionHalt
    63  	}
    64  
    65  	ui.Say(fmt.Sprintf("Created temporary keypair: %s", keyName))
    66  
    67  	// If we're in debug mode, output the private key to the working
    68  	// directory.
    69  	if s.Debug {
    70  		ui.Message(fmt.Sprintf("Saving key for debug purposes: %s", s.DebugKeyPath))
    71  		f, err := os.Create(s.DebugKeyPath)
    72  		if err != nil {
    73  			state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
    74  			return multistep.ActionHalt
    75  		}
    76  		defer f.Close()
    77  
    78  		// Write the key out
    79  		if _, err := f.Write([]byte(keypair.PrivateKey)); err != nil {
    80  			state.Put("error", fmt.Errorf("Error saving debug key: %s", err))
    81  			return multistep.ActionHalt
    82  		}
    83  
    84  		// Chmod it so that it is SSH ready
    85  		if runtime.GOOS != "windows" {
    86  			if err := f.Chmod(0600); err != nil {
    87  				state.Put("error", fmt.Errorf("Error setting permissions of debug key: %s", err))
    88  				return multistep.ActionHalt
    89  			}
    90  		}
    91  	}
    92  
    93  	// Set the keyname so we know to delete it later
    94  	s.keyName = keyName
    95  
    96  	// Set some state data for use in future steps
    97  	state.Put("keyPair", keyName)
    98  	state.Put("privateKey", keypair.PrivateKey)
    99  
   100  	return multistep.ActionContinue
   101  }
   102  
   103  func (s *StepKeyPair) Cleanup(state multistep.StateBag) {
   104  	// If we used an SSH private key file, do not go about deleting
   105  	// keypairs
   106  	if s.PrivateKeyFile != "" {
   107  		return
   108  	}
   109  	// If no key name is set, then we never created it, so just return
   110  	if s.keyName == "" {
   111  		return
   112  	}
   113  
   114  	config := state.Get("config").(Config)
   115  	ui := state.Get("ui").(packer.Ui)
   116  
   117  	// We need the v2 compute client
   118  	computeClient, err := config.computeV2Client()
   119  	if err != nil {
   120  		ui.Error(fmt.Sprintf(
   121  			"Error cleaning up keypair. Please delete the key manually: %s", s.keyName))
   122  		return
   123  	}
   124  
   125  	ui.Say(fmt.Sprintf("Deleting temporary keypair: %s ...", s.keyName))
   126  	err = keypairs.Delete(computeClient, s.keyName).ExtractErr()
   127  	if err != nil {
   128  		ui.Error(fmt.Sprintf(
   129  			"Error cleaning up keypair. Please delete the key manually: %s", s.keyName))
   130  	}
   131  }