packer-cn/builder/openstack/ssh.go

70 lines
1.8 KiB
Go

package openstack
import (
"code.google.com/p/go.crypto/ssh"
"errors"
"fmt"
"github.com/mitchellh/multistep"
"time"
"github.com/mitchellh/gophercloud-fork-40444fb"
)
// SSHAddress returns a function that can be given to the SSH communicator
// for determining the SSH address based on the server AccessIPv4 setting..
func SSHAddress(csp gophercloud.CloudServersProvider, port int) func(multistep.StateBag) (string, error) {
return func(state multistep.StateBag) (string, error) {
s := state.Get("server").(*gophercloud.Server)
if ip := state.Get("access_ip").(gophercloud.FloatingIp); ip.Ip != "" {
return fmt.Sprintf("%s:%d", ip.Ip, port), nil
}
ip_pools, err := s.AllAddressPools()
if err != nil {
return "", errors.New("Error parsing SSH addresses")
}
for pool, addresses := range ip_pools {
if pool != "" {
for _, address := range addresses {
if address.Addr != "" && address.Version == 4 {
return fmt.Sprintf("%s:%d", address.Addr, port), nil
}
}
}
}
serverState, err := csp.ServerById(s.Id)
if err != nil {
return "", err
}
state.Put("server", serverState)
time.Sleep(1 * time.Second)
return "", errors.New("couldn't determine IP address for server")
}
}
// SSHConfig returns a function that can be used for the SSH communicator
// config for connecting to the instance created over SSH using the generated
// private key.
func SSHConfig(username string) func(multistep.StateBag) (*ssh.ClientConfig, error) {
return func(state multistep.StateBag) (*ssh.ClientConfig, error) {
privateKey := state.Get("privateKey").(string)
signer, err := ssh.ParsePrivateKey([]byte(privateKey))
if err != nil {
return nil, fmt.Errorf("Error setting up SSH config: %s", err)
}
return &ssh.ClientConfig{
User: username,
Auth: []ssh.AuthMethod{
ssh.PublicKeys(signer),
},
}, nil
}
}