83 lines
2.0 KiB
Go
83 lines
2.0 KiB
Go
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package common
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import (
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"fmt"
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"time"
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"github.com/mitchellh/multistep"
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"github.com/mitchellh/packer/packer"
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"github.com/nilshell/xmlrpc"
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)
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type StepWaitForIP struct {
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Chan <-chan string
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Timeout time.Duration
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}
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func (self *StepWaitForIP) Run(state multistep.StateBag) multistep.StepAction {
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ui := state.Get("ui").(packer.Ui)
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client := state.Get("client").(XenAPIClient)
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ui.Say("Step: Wait for VM's IP to become known to us.")
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uuid := state.Get("instance_uuid").(string)
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instance, err := client.GetVMByUuid(uuid)
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if err != nil {
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ui.Error(fmt.Sprintf("Unable to get VM from UUID '%s': %s", uuid, err.Error()))
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return multistep.ActionHalt
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}
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var ip string
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err = InterruptibleWait{
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Timeout: self.Timeout,
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PredicateInterval: 5 * time.Second,
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Predicate: func() (result bool, err error) {
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// first check if we got any HTTP requests
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select {
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case ip = <-self.Chan:
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ui.Message(fmt.Sprintf("Got IP '%s' from HTTP request", ip))
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return true, nil
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default:
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}
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// failing that, look for PV IP
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metrics, err := instance.GetGuestMetrics()
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if err != nil {
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return false, err
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}
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if metrics != nil {
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networks := metrics["networks"].(xmlrpc.Struct)
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if ipRaw, ok := networks["0/ip"]; ok {
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if ip = ipRaw.(string); ip != "" {
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ui.Message(fmt.Sprintf("Got IP '%s' from XenServer tools", ip))
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return true, nil
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}
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}
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}
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return false, nil
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},
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}.Wait(state)
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if err != nil {
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ui.Error(fmt.Sprintf("Could not get IP address of VM: %s", err.Error()))
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// @todo: give advice on what went wrong (no HTTP server? no PV drivers?)
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return multistep.ActionHalt
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}
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ui.Say(fmt.Sprintf("Got IP address '%s'", ip))
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state.Put("instance_ssh_address", ip)
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return multistep.ActionContinue
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}
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func (self *StepWaitForIP) Cleanup(state multistep.StateBag) {}
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func InstanceSSHIP(state multistep.StateBag) (string, error) {
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ip := state.Get("instance_ssh_address").(string)
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return ip, nil
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}
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func InstanceSSHPort(state multistep.StateBag) (uint, error) {
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return 22, nil
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}
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