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package cloudstack
import (
"context"
"fmt"
"io/ioutil"
"regexp"
"github.com/hashicorp/packer/packer-plugin-sdk/multistep"
packersdk "github.com/hashicorp/packer/packer-plugin-sdk/packer"
"github.com/xanzy/go-cloudstack/cloudstack"
)
type stepPrepareConfig struct{}
func (s *stepPrepareConfig) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
client := state.Get("client").(*cloudstack.CloudStackClient)
config := state.Get("config").(*Config)
ui := state.Get("ui").(packersdk.Ui)
ui.Say("Preparing config...")
var err error
var errs *packersdk.MultiError
// First get the project and zone UUID's so we can use them in other calls when needed.
if config.Project != "" && !isUUID(config.Project) {
config.Project, _, err = client.Project.GetProjectID(config.Project)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"project", config.Project, err})
}
}
if config.UserDataFile != "" {
userdata, err := ioutil.ReadFile(config.UserDataFile)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, fmt.Errorf("problem reading user data file: %s", err))
}
config.UserData = string(userdata)
}
if !isUUID(config.Zone) {
config.Zone, _, err = client.Zone.GetZoneID(config.Zone)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"zone", config.Zone, err})
}
}
// Then try to get the remaining UUID's.
if config.DiskOffering != "" && !isUUID(config.DiskOffering) {
config.DiskOffering, _, err = client.DiskOffering.GetDiskOfferingID(config.DiskOffering)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"disk offering", config.DiskOffering, err})
}
}
if config.PublicIPAddress != "" {
if isUUID(config.PublicIPAddress) {
ip, _, err := client.Address.GetPublicIpAddressByID(config.PublicIPAddress)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, fmt.Errorf("Failed to retrieve IP address: %s", err))
}
state.Put("ipaddress", ip.Ipaddress)
} else {
// Save the public IP address before replacing it with it's UUID.
state.Put("ipaddress", config.PublicIPAddress)
p := client.Address.NewListPublicIpAddressesParams()
p.SetIpaddress(config.PublicIPAddress)
if config.Project != "" {
p.SetProjectid(config.Project)
}
ipAddrs, err := client.Address.ListPublicIpAddresses(p)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"IP address", config.PublicIPAddress, err})
}
if err == nil && ipAddrs.Count != 1 {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"IP address", config.PublicIPAddress, ipAddrs})
}
if err == nil && ipAddrs.Count == 1 {
config.PublicIPAddress = ipAddrs.PublicIpAddresses[0].Id
}
}
}
if !isUUID(config.Network) {
config.Network, _, err = client.Network.GetNetworkID(config.Network, cloudstack.WithProject(config.Project))
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"network", config.Network, err})
}
}
// Then try to get the SG's UUID's.
if len(config.SecurityGroups) > 0 {
for i := range config.SecurityGroups {
if !isUUID(config.SecurityGroups[i]) {
config.SecurityGroups[i], _, err = client.SecurityGroup.GetSecurityGroupID(config.SecurityGroups[i], cloudstack.WithProject(config.Project))
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"network", config.SecurityGroups[i], err})
}
}
}
}
if !isUUID(config.ServiceOffering) {
config.ServiceOffering, _, err = client.ServiceOffering.GetServiceOfferingID(config.ServiceOffering)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"service offering", config.ServiceOffering, err})
}
}
if config.SourceISO != "" {
if isUUID(config.SourceISO) {
state.Put("source", config.SourceISO)
} else {
isoID, _, err := client.ISO.GetIsoID(config.SourceISO, "executable", config.Zone)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"ISO", config.SourceISO, err})
}
state.Put("source", isoID)
}
}
if config.SourceTemplate != "" {
if isUUID(config.SourceTemplate) {
state.Put("source", config.SourceTemplate)
} else {
templateID, _, err := client.Template.GetTemplateID(config.SourceTemplate, "executable", config.Zone)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"template", config.SourceTemplate, err})
}
state.Put("source", templateID)
}
}
if !isUUID(config.TemplateOS) {
p := client.GuestOS.NewListOsTypesParams()
p.SetDescription(config.TemplateOS)
types, err := client.GuestOS.ListOsTypes(p)
if err != nil {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"OS type", config.TemplateOS, err})
}
if err == nil && types.Count != 1 {
errs = packersdk.MultiErrorAppend(errs, &retrieveErr{"OS type", config.TemplateOS, types})
}
if err == nil && types.Count == 1 {
config.TemplateOS = types.OsTypes[0].Id
}
}
// This is needed because nil is not always nil. When returning *packersdk.MultiError(nil)
// as an error interface, that interface will no longer be equal to nil but it will be
// an interface with type *packersdk.MultiError and value nil which is different then a
// nil interface.
if errs != nil && len(errs.Errors) > 0 {
state.Put("error", errs)
ui.Error(errs.Error())
return multistep.ActionHalt
}
ui.Message("Config has been prepared!")
return multistep.ActionContinue
}
func (s *stepPrepareConfig) Cleanup(state multistep.StateBag) {
// Nothing to cleanup for this step.
}
type retrieveErr struct {
name string
value string
result interface{}
}
func (e *retrieveErr) Error() string {
if err, ok := e.result.(error); ok {
e.result = err.Error()
}
return fmt.Sprintf("Error retrieving UUID of %s %s: %v", e.name, e.value, e.result)
}
var uuidRegex = regexp.MustCompile(`^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$`)
func isUUID(uuid string) bool {
return uuidRegex.MatchString(uuid)
}
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