builder/openstack: support user data [GH-1867]

builder/openstack/builder.go

@@ -80,6 +80,8 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packe
 			SecurityGroups:   b.config.SecurityGroups,
 			Networks:         b.config.Networks,
 			AvailabilityZone: b.config.AvailabilityZone,
+			UserData:         b.config.UserData,
+			UserDataFile:     b.config.UserDataFile,
 		},
 		&StepWaitForRackConnect{
 			Wait: b.config.RackconnectWait,

builder/openstack/run_config.go

@@ -23,6 +23,8 @@ type RunConfig struct {
 	FloatingIp       string   `mapstructure:"floating_ip"`
 	SecurityGroups   []string `mapstructure:"security_groups"`
 	Networks         []string `mapstructure:"networks"`
+	UserData         string   `mapstructure:"user_data"`
+	UserDataFile     string   `mapstructure:"user_data_file"`
 
 	// Not really used, but here for BC
 	OpenstackProvider string `mapstructure:"openstack_provider"`

builder/openstack/step_run_source_server.go

@@ -2,6 +2,7 @@ package openstack
 
 import (
 	"fmt"
+	"io/ioutil"
 	"log"
 
 	"github.com/mitchellh/multistep"
@@ -16,6 +17,8 @@ type StepRunSourceServer struct {
 	SecurityGroups   []string
 	Networks         []string
 	AvailabilityZone string
+	UserData         string
+	UserDataFile     string
 
 	server *servers.Server
 }
@@ -39,6 +42,16 @@ func (s *StepRunSourceServer) Run(state multistep.StateBag) multistep.StepAction
 		networks[i].UUID = networkUuid
 	}
 
+	userData := []byte(s.UserData)
+	if s.UserDataFile != "" {
+		userData, err = ioutil.ReadFile(s.UserDataFile)
+		if err != nil {
+			err = fmt.Errorf("Error reading user data file: %s", err)
+			state.Put("error", err)
+			return multistep.ActionHalt
+		}
+	}
+
 	ui.Say("Launching server...")
 	s.server, err = servers.Create(computeClient, keypairs.CreateOptsExt{
 		CreateOptsBuilder: servers.CreateOpts{
@@ -48,6 +61,7 @@ func (s *StepRunSourceServer) Run(state multistep.StateBag) multistep.StepAction
 			SecurityGroups:   s.SecurityGroups,
 			Networks:         networks,
 			AvailabilityZone: s.AvailabilityZone,
+			UserData:         userData,
 		},
 
 		KeyName: keyName,