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step_type_boot_command.go
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/
step_type_boot_command.go
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package common
import (
"context"
"fmt"
"log"
"net"
"time"
"github.com/hashicorp/packer/common"
"github.com/hashicorp/packer/common/bootcommand"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
"github.com/hashicorp/packer/template/interpolate"
"github.com/mitchellh/go-vnc"
)
// This step "types" the boot command into the VM over VNC.
//
// Uses:
// http_port int
// ui packer.Ui
// vnc_port int
//
// Produces:
// <nothing>
type StepTypeBootCommand struct {
BootCommand string
VNCEnabled bool
BootWait time.Duration
VMName string
Ctx interpolate.Context
KeyInterval time.Duration
}
type bootCommandTemplateData struct {
HTTPIP string
HTTPPort int
Name string
}
func (s *StepTypeBootCommand) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
if !s.VNCEnabled {
log.Println("Skipping boot command step...")
return multistep.ActionContinue
}
debug := state.Get("debug").(bool)
driver := state.Get("driver").(Driver)
httpPort := state.Get("http_port").(int)
ui := state.Get("ui").(packer.Ui)
vncIp := state.Get("vnc_ip").(string)
vncPort := state.Get("vnc_port").(int)
vncPassword := state.Get("vnc_password")
// Wait the for the vm to boot.
if int64(s.BootWait) > 0 {
ui.Say(fmt.Sprintf("Waiting %s for boot...", s.BootWait.String()))
select {
case <-time.After(s.BootWait):
break
case <-ctx.Done():
return multistep.ActionHalt
}
}
var pauseFn multistep.DebugPauseFn
if debug {
pauseFn = state.Get("pauseFn").(multistep.DebugPauseFn)
}
// Connect to VNC
ui.Say(fmt.Sprintf("Connecting to VM via VNC (%s:%d)", vncIp, vncPort))
nc, err := net.Dial("tcp", fmt.Sprintf("%s:%d", vncIp, vncPort))
if err != nil {
err := fmt.Errorf("Error connecting to VNC: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
defer nc.Close()
var auth []vnc.ClientAuth
if vncPassword != nil && len(vncPassword.(string)) > 0 {
auth = []vnc.ClientAuth{&vnc.PasswordAuth{Password: vncPassword.(string)}}
} else {
auth = []vnc.ClientAuth{new(vnc.ClientAuthNone)}
}
c, err := vnc.Client(nc, &vnc.ClientConfig{Auth: auth, Exclusive: true})
if err != nil {
err := fmt.Errorf("Error handshaking with VNC: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
defer c.Close()
log.Printf("Connected to VNC desktop: %s", c.DesktopName)
// Determine the host IP
hostIP, err := driver.HostIP(state)
if err != nil {
err := fmt.Errorf("Error detecting host IP: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
log.Printf("Host IP for the VMware machine: %s", hostIP)
common.SetHTTPIP(hostIP)
s.Ctx.Data = &bootCommandTemplateData{
hostIP,
httpPort,
s.VMName,
}
d := bootcommand.NewVNCDriver(c, s.KeyInterval)
ui.Say("Typing the boot command over VNC...")
command, err := interpolate.Render(s.BootCommand, &s.Ctx)
if err != nil {
err := fmt.Errorf("Error preparing boot command: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
seq, err := bootcommand.GenerateExpressionSequence(command)
if err != nil {
err := fmt.Errorf("Error generating boot command: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
if err := seq.Do(ctx, d); err != nil {
err := fmt.Errorf("Error running boot command: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
if pauseFn != nil {
pauseFn(multistep.DebugLocationAfterRun,
fmt.Sprintf("boot_command: %s", command), state)
}
return multistep.ActionContinue
}
func (*StepTypeBootCommand) Cleanup(multistep.StateBag) {}