69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
package qemu
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import (
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"context"
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"fmt"
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"net"
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"github.com/hashicorp/packer-plugin-sdk/multistep"
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packersdk "github.com/hashicorp/packer-plugin-sdk/packer"
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)
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// Step to discover the http ip
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// which guests use to reach the vm host
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// To make sure the IP is set before boot command and http server steps
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type stepHTTPIPDiscover struct{}
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func (s *stepHTTPIPDiscover) 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").(packersdk.Ui)
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hostIP := ""
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if config.NetBridge == "" {
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hostIP = "10.0.2.2"
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} else {
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bridgeInterface, err := net.InterfaceByName(config.NetBridge)
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if err != nil {
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err := fmt.Errorf("Error getting the bridge %s interface: %s", config.NetBridge, err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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addrs, err := bridgeInterface.Addrs()
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if err != nil {
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err := fmt.Errorf("Error getting the bridge %s interface addresses: %s", config.NetBridge, err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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for _, addr := range addrs {
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var ip net.IP
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switch v := addr.(type) {
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case *net.IPNet:
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ip = v.IP
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case *net.IPAddr:
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ip = v.IP
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}
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if ip == nil {
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continue
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}
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ip = ip.To4()
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if ip == nil {
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continue
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}
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hostIP = ip.String()
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break
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}
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if hostIP == "" {
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err := fmt.Errorf("Error getting an IPv4 address from the bridge %s: cannot find any IPv4 address", config.NetBridge)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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}
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state.Put("http_ip", hostIP)
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return multistep.ActionContinue
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}
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func (s *stepHTTPIPDiscover) Cleanup(state multistep.StateBag) {}
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