forked from docker/machine
/
generic.go
188 lines (157 loc) · 4.23 KB
/
generic.go
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package generic
import (
"errors"
"fmt"
"net"
"os"
"strconv"
"time"
"github.com/docker/machine/libmachine/drivers"
"github.com/docker/machine/libmachine/engine"
"github.com/docker/machine/libmachine/log"
"github.com/docker/machine/libmachine/mcnflag"
"github.com/docker/machine/libmachine/mcnutils"
"github.com/docker/machine/libmachine/state"
)
type Driver struct {
*drivers.BaseDriver
EnginePort int
SSHKey string
}
const (
defaultTimeout = 1 * time.Second
)
// GetCreateFlags registers the flags this driver adds to
// "docker hosts create"
func (d *Driver) GetCreateFlags() []mcnflag.Flag {
return []mcnflag.Flag{
mcnflag.IntFlag{
Name: "generic-engine-port",
Usage: "Docker engine port",
Value: engine.DefaultPort,
EnvVar: "GENERIC_ENGINE_PORT",
},
mcnflag.StringFlag{
Name: "generic-ip-address",
Usage: "IP Address of machine",
EnvVar: "GENERIC_IP_ADDRESS",
},
mcnflag.StringFlag{
Name: "generic-ssh-user",
Usage: "SSH user",
Value: drivers.DefaultSSHUser,
EnvVar: "GENERIC_SSH_USER",
},
mcnflag.StringFlag{
Name: "generic-ssh-key",
Usage: "SSH private key path (if not provided, identities in ssh-agent will be used)",
Value: "",
EnvVar: "GENERIC_SSH_KEY",
},
mcnflag.IntFlag{
Name: "generic-ssh-port",
Usage: "SSH port",
Value: drivers.DefaultSSHPort,
EnvVar: "GENERIC_SSH_PORT",
},
}
}
// NewDriver creates and returns a new instance of the driver
func NewDriver(hostName, storePath string) drivers.Driver {
return &Driver{
EnginePort: engine.DefaultPort,
BaseDriver: &drivers.BaseDriver{
MachineName: hostName,
StorePath: storePath,
},
}
}
// DriverName returns the name of the driver
func (d *Driver) DriverName() string {
return "generic"
}
func (d *Driver) GetSSHHostname() (string, error) {
return d.GetIP()
}
func (d *Driver) GetSSHUsername() string {
return d.SSHUser
}
func (d *Driver) GetSSHKeyPath() string {
if d.SSHKey == "" {
return ""
}
if d.SSHKeyPath == "" {
d.SSHKeyPath = d.ResolveStorePath("id_rsa")
}
return d.SSHKeyPath
}
func (d *Driver) SetConfigFromFlags(flags drivers.DriverOptions) error {
d.EnginePort = flags.Int("generic-engine-port")
d.IPAddress = flags.String("generic-ip-address")
d.SSHUser = flags.String("generic-ssh-user")
d.SSHKey = flags.String("generic-ssh-key")
d.SSHPort = flags.Int("generic-ssh-port")
if d.IPAddress == "" {
return errors.New("generic driver requires the --generic-ip-address option")
}
return nil
}
func (d *Driver) PreCreateCheck() error {
if d.SSHKey != "" {
if _, err := os.Stat(d.SSHKey); os.IsNotExist(err) {
return fmt.Errorf("Ssh key does not exist: %q", d.SSHKey)
}
}
return nil
}
func (d *Driver) Create() error {
if d.SSHKey == "" {
log.Info("No SSH key specified. Connecting to this machine now and in the" +
" future will require the ssh agent to contain the appropriate key.")
} else {
log.Info("Importing SSH key...")
// TODO: validate the key is a valid key
if err := mcnutils.CopyFile(d.SSHKey, d.GetSSHKeyPath()); err != nil {
return fmt.Errorf("unable to copy ssh key: %s", err)
}
if err := os.Chmod(d.GetSSHKeyPath(), 0600); err != nil {
return fmt.Errorf("unable to set permissions on the ssh key: %s", err)
}
}
log.Debugf("IP: %s", d.IPAddress)
return nil
}
func (d *Driver) GetURL() (string, error) {
if err := drivers.MustBeRunning(d); err != nil {
return "", err
}
ip, err := d.GetIP()
if err != nil {
return "", err
}
return fmt.Sprintf("tcp://%s", net.JoinHostPort(ip, strconv.Itoa(d.EnginePort))), nil
}
func (d *Driver) GetState() (state.State, error) {
address := net.JoinHostPort(d.IPAddress, strconv.Itoa(d.SSHPort))
_, err := net.DialTimeout("tcp", address, defaultTimeout)
if err != nil {
return state.Stopped, nil
}
return state.Running, nil
}
func (d *Driver) Start() error {
return errors.New("generic driver does not support start")
}
func (d *Driver) Stop() error {
return errors.New("generic driver does not support stop")
}
func (d *Driver) Restart() error {
_, err := drivers.RunSSHCommandFromDriver(d, "sudo shutdown -r now")
return err
}
func (d *Driver) Kill() error {
return errors.New("generic driver does not support kill")
}
func (d *Driver) Remove() error {
return nil
}