130 lines
4.1 KiB
Go
130 lines
4.1 KiB
Go
package vmx
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import (
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"context"
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"fmt"
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"log"
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"os"
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"path/filepath"
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"regexp"
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vmwcommon "github.com/hashicorp/packer/builder/vmware/common"
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"github.com/hashicorp/packer/helper/multistep"
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"github.com/hashicorp/packer/packer"
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"github.com/hashicorp/packer/packer/tmp"
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)
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// StepCloneVMX takes a VMX file and clones the VM into the output directory.
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type StepCloneVMX struct {
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OutputDir *string
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Path string
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VMName string
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Linked bool
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tempDir string
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}
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func (s *StepCloneVMX) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
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halt := func(err error) multistep.StepAction {
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state.Put("error", err)
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return multistep.ActionHalt
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}
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driver := state.Get("driver").(vmwcommon.Driver)
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ui := state.Get("ui").(packer.Ui)
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// Set the path we want for the new .vmx file and clone
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vmxPath := filepath.Join(*s.OutputDir, s.VMName+".vmx")
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ui.Say("Cloning source VM...")
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log.Printf("Cloning from: %s", s.Path)
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log.Printf("Cloning to: %s", vmxPath)
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if err := driver.Clone(vmxPath, s.Path, s.Linked); err != nil {
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return halt(err)
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}
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// Read in the machine configuration from the cloned VMX file
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//
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// * The main driver needs the path to the vmx (set above) and the
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// network type so that it can work out things like IP's and MAC
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// addresses
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// * The disk compaction step needs the paths to all attached disks
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if remoteDriver, ok := driver.(vmwcommon.RemoteDriver); ok {
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remoteVmxPath := vmxPath
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tempDir, err := tmp.Dir("packer-vmx")
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if err != nil {
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return halt(err)
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}
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s.tempDir = tempDir
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vmxPath = filepath.Join(tempDir, s.VMName+".vmx")
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if err = remoteDriver.Download(remoteVmxPath, vmxPath); err != nil {
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return halt(err)
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}
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}
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vmxData, err := vmwcommon.ReadVMX(vmxPath)
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if err != nil {
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return halt(err)
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}
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var diskFilenames []string
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// The VMX file stores the path to a configured disk, and information
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// about that disks attachment to a virtual adapter/controller, as a
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// key/value pair.
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// For a virtual disk attached to bus ID 3 of the virtual machines
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// first SCSI adapter the key/value pair would look something like:
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// scsi0:3.fileName = "relative/path/to/scsiDisk.vmdk"
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// The supported adapter types and configuration maximums for each type
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// vary according to the VMware platform type and version, and the
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// Virtual Machine Hardware version used. See the 'Virtual Machine
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// Maximums' section within VMware's 'Configuration Maximums'
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// documentation for each platform:
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// https://kb.vmware.com/s/article/1003497
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// Information about the supported Virtual Machine Hardware versions:
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// https://kb.vmware.com/s/article/1003746
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// The following regexp is used to match all possible disk attachment
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// points that may be found in the VMX file across all VMware
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// platforms/versions and Virtual Machine Hardware versions
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diskPathKeyRe := regexp.MustCompile(`(?i)^(scsi|sata|ide|nvme)[[:digit:]]:[[:digit:]]{1,2}\.fileName`)
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for k, v := range vmxData {
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match := diskPathKeyRe.FindString(k)
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if match != "" && filepath.Ext(v) == ".vmdk" {
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diskFilenames = append(diskFilenames, v)
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}
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}
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// Write out the relative, host filesystem paths to the disks
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var diskFullPaths []string
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for _, diskFilename := range diskFilenames {
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log.Printf("Found attached disk with filename: %s", diskFilename)
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diskFullPaths = append(diskFullPaths, filepath.Join(*s.OutputDir, diskFilename))
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}
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if len(diskFullPaths) == 0 {
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return halt(fmt.Errorf("Could not enumerate disk info from the vmx file"))
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}
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// Determine the network type by reading out of the .vmx
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var networkType string
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if _, ok := vmxData["ethernet0.connectiontype"]; ok {
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networkType = vmxData["ethernet0.connectiontype"]
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log.Printf("Discovered the network type: %s", networkType)
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}
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if networkType == "" {
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networkType = "nat"
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log.Printf("Defaulting to network type: %s", networkType)
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}
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// Stash all required information in our state bag
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state.Put("vmx_path", vmxPath)
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state.Put("disk_full_paths", diskFullPaths)
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state.Put("vmnetwork", networkType)
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return multistep.ActionContinue
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}
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func (s *StepCloneVMX) Cleanup(state multistep.StateBag) {
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if s.tempDir != "" {
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os.RemoveAll(s.tempDir)
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}
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}
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