github.com/jerryclinesmith/packer@v0.3.7/builder/openstack/ssh.go (about)

     1  package openstack
     2  
     3  import (
     4  	gossh "code.google.com/p/go.crypto/ssh"
     5  	"errors"
     6  	"fmt"
     7  	"github.com/mitchellh/multistep"
     8  	"github.com/mitchellh/packer/communicator/ssh"
     9  	"github.com/rackspace/gophercloud"
    10  	"time"
    11  )
    12  
    13  // SSHAddress returns a function that can be given to the SSH communicator
    14  // for determining the SSH address based on the server AccessIPv4 setting..
    15  func SSHAddress(csp gophercloud.CloudServersProvider, port int) func(multistep.StateBag) (string, error) {
    16  	return func(state multistep.StateBag) (string, error) {
    17  		for j := 0; j < 2; j++ {
    18  			s := state.Get("server").(*gophercloud.Server)
    19  			if s.AccessIPv4 != "" {
    20  				return fmt.Sprintf("%s:%d", s.AccessIPv4, port), nil
    21  			}
    22  			if s.AccessIPv6 != "" {
    23  				return fmt.Sprintf("[%s]:%d", s.AccessIPv6, port), nil
    24  			}
    25  			serverState, err := csp.ServerById(s.Id)
    26  
    27  			if err != nil {
    28  				return "", err
    29  			}
    30  
    31  			state.Put("server", serverState)
    32  			time.Sleep(1 * time.Second)
    33  		}
    34  
    35  		return "", errors.New("couldn't determine IP address for server")
    36  	}
    37  }
    38  
    39  // SSHConfig returns a function that can be used for the SSH communicator
    40  // config for connecting to the instance created over SSH using the generated
    41  // private key.
    42  func SSHConfig(username string) func(multistep.StateBag) (*gossh.ClientConfig, error) {
    43  	return func(state multistep.StateBag) (*gossh.ClientConfig, error) {
    44  		privateKey := state.Get("privateKey").(string)
    45  
    46  		keyring := new(ssh.SimpleKeychain)
    47  		if err := keyring.AddPEMKey(privateKey); err != nil {
    48  			return nil, fmt.Errorf("Error setting up SSH config: %s", err)
    49  		}
    50  
    51  		return &gossh.ClientConfig{
    52  			User: username,
    53  			Auth: []gossh.ClientAuth{
    54  				gossh.ClientAuthKeyring(keyring),
    55  			},
    56  		}, nil
    57  	}
    58  }