90 lines
2.2 KiB
Go
90 lines
2.2 KiB
Go
package qemu
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import (
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"context"
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"fmt"
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"log"
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"time"
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"github.com/digitalocean/go-qemu/qmp"
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"github.com/hashicorp/packer/helper/multistep"
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"github.com/hashicorp/packer/packer"
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)
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// This step configures the VM to enable the QMP listener.
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//
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// Uses:
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// config *config
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// ui packer.Ui
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//
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// Produces:
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type stepConfigureQMP struct {
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monitor *qmp.SocketMonitor
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}
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func (s *stepConfigureQMP) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
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config := state.Get("config").(*Config)
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ui := state.Get("ui").(packer.Ui)
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if !config.VNCUsePassword {
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return multistep.ActionContinue
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}
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msg := fmt.Sprintf("QMP socket at: %s", config.QMPSocketPath)
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ui.Say(msg)
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log.Print(msg)
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// Only initialize and open QMP when we have a use for it.
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// Open QMP socket
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var err error
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var cmd []byte
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var result []byte
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s.monitor, err = qmp.NewSocketMonitor("unix", config.QMPSocketPath, 2*time.Second)
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if err != nil {
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err := fmt.Errorf("Error opening QMP socket: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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QMPMonitor := s.monitor
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vncPassword := state.Get("vnc_password")
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// Connect to QMP
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// function automatically calls capabilities so is immediately ready for commands
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err = QMPMonitor.Connect()
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if err != nil {
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err := fmt.Errorf("Error connecting to QMP socket: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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log.Printf("QMP socket open SUCCESS")
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cmd = []byte(fmt.Sprintf("{ \"execute\": \"change-vnc-password\", \"arguments\": { \"password\": \"%s\" } }",
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vncPassword))
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result, err = QMPMonitor.Run(cmd)
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if err != nil {
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err := fmt.Errorf("Error connecting to QMP socket: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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msg = fmt.Sprintf("QMP Command: %s\nResult: %s", cmd, result)
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log.Printf(msg)
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// Put QMP monitor in statebag in case there is a use in a following step
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// Uncomment for future case as it is unused for now
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//state.Put("qmp_monitor", QMPMonitor)
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return multistep.ActionContinue
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}
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func (s *stepConfigureQMP) Cleanup(multistep.StateBag) {
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if s.monitor != nil {
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err := s.monitor.Disconnect()
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if err != nil {
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log.Printf("failed to disconnect QMP: %v", err)
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}
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}
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}
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