75 lines
2.1 KiB
Go
75 lines
2.1 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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"github.com/hashicorp/packer/common/net"
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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 adds a NAT port forwarding definition so that SSH or WinRM is available
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// on the guest machine.
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type stepPortForward struct {
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CommunicatorType string
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NetBridge string
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l *net.Listener
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}
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func (s *stepPortForward) 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 s.CommunicatorType == "none" {
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ui.Message("No communicator is set; skipping port forwarding setup.")
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return multistep.ActionContinue
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}
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if s.NetBridge != "" {
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ui.Message("net_bridge is set; skipping port forwarding setup.")
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return multistep.ActionContinue
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}
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commHostPort := config.CommConfig.Comm.Port()
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if config.CommConfig.SkipNatMapping {
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log.Printf("Skipping NAT port forwarding. Using communicator (SSH, WinRM, etc) port %d", commHostPort)
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state.Put("commHostPort", commHostPort)
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return multistep.ActionContinue
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}
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log.Printf("Looking for available communicator (SSH, WinRM, etc) port between %d and %d", config.CommConfig.HostPortMin, config.CommConfig.HostPortMax)
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var err error
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s.l, err = net.ListenRangeConfig{
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Addr: config.VNCBindAddress,
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Min: config.CommConfig.HostPortMin,
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Max: config.CommConfig.HostPortMax,
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Network: "tcp",
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}.Listen(ctx)
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if err != nil {
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err := fmt.Errorf("Error finding port: %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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s.l.Listener.Close() // free port, but don't unlock lock file
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commHostPort = s.l.Port
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ui.Say(fmt.Sprintf("Found port for communicator (SSH, WinRM, etc): %d.", commHostPort))
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// Save the port we're using so that future steps can use it
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state.Put("commHostPort", commHostPort)
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return multistep.ActionContinue
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}
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func (s *stepPortForward) Cleanup(state multistep.StateBag) {
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if s.l != nil {
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err := s.l.Close()
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if err != nil {
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log.Printf("failed to unlock port lockfile: %v", err)
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}
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}
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}
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