Add option to destroy vifs

builder/xenserver/common/common_config.go

@@ -51,6 +51,8 @@ type CommonConfig struct {
 	RawSSHWaitTimeout string `mapstructure:"ssh_wait_timeout"`
 	SSHWaitTimeout    time.Duration
 
+	DestroyVIFs bool `mapstructure:"destroy_vifs"`
+
 	OutputDir string `mapstructure:"output_directory"`
 	Format    string `mapstructure:"format"`
 	KeepVM    string `mapstructure:"keep_vm"`

builder/xenserver/common/step_destroy_vifs.go

@@ -0,0 +1,50 @@
+package common
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"github.com/hashicorp/packer-plugin-sdk/multistep"
+	"github.com/hashicorp/packer-plugin-sdk/packer"
+)
+
+type StepDestroyVIFs struct{}
+
+func (self *StepDestroyVIFs) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
+	c := state.Get("client").(*Connection)
+	config := state.Get("config").(Config)
+	ui := state.Get("ui").(packer.Ui)
+
+	if !config.DestroyVIFs {
+		log.Printf("Not destroying VIFs")
+		return multistep.ActionContinue
+	}
+
+	ui.Say("Step: Destroy VIFs")
+
+	uuid := state.Get("instance_uuid").(string)
+	instance, err := c.client.VM.GetByUUID(c.session, uuid)
+	if err != nil {
+		ui.Error(fmt.Sprintf("Unable to get VM from UUID '%s': %s", uuid, err.Error()))
+		return multistep.ActionHalt
+	}
+
+	vifs, err := c.client.VM.GetVIFs(c.session, instance)
+	if err != nil {
+		ui.Error(fmt.Sprintf("Error getting VIFs: %s", err.Error()))
+		return multistep.ActionHalt
+	}
+
+	for _, vif := range vifs {
+		err = c.client.VIF.Destroy(c.session, vif)
+		if err != nil {
+			ui.Error(fmt.Sprintf("Error destroying VIF: %s", err.Error()))
+			return multistep.ActionHalt
+		}
+	}
+
+	return multistep.ActionContinue
+}
+
+func (self *StepDestroyVIFs) Cleanup(state multistep.StateBag) {}

builder/xenserver/iso/builder.go

@@ -297,6 +297,7 @@ func (self *Builder) Run(ctx context.Context, ui packer.Ui, hook packer.Hook) (p
 		&xscommon.StepDetachVdi{
 			VdiUuidKey: "floppy_vdi_uuid",
 		},
+		new(xscommon.StepDestroyVIFs),
 		new(xscommon.StepExport),
 	}
 

builder/xenserver/xva/builder.go

@@ -167,6 +167,7 @@ func (self *Builder) Run(ctx context.Context, ui packer.Ui, hook packer.Hook) (p
 		&xscommon.StepDetachVdi{
 			VdiUuidKey: "tools_vdi_uuid",
 		},
+		new(xscommon.StepDestroyVIFs),
 		new(xscommon.StepExport),
 	}
 

docs/builders/iso/xenserver-iso.html.markdown

@@ -73,6 +73,10 @@ each category, the available options are alphabetized and described.
   run `xe template-list`. Setting the correct value hints to XenServer how to
   optimize the virtual hardware to work best with that operating system.
 
+* `destroy_vifs` (boolean) - Whether to destroy VIFs on the VM prior to
+  exporting. Removing them may make the image more generic and reusable.
+  Default is `false`.
+
 * `disk_size` (integer) - The size, in megabytes, of the hard disk to create
   for the VM. By default, this is 40000 (about 40 GB).