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resources.go
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/
resources.go
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package cloudstack
import (
"fmt"
"log"
"regexp"
"strings"
"time"
"github.com/hashicorp/terraform/helper/schema"
"github.com/xanzy/go-cloudstack/cloudstack"
)
// UnlimitedResourceID is a "special" ID to define an unlimited resource
const UnlimitedResourceID = "-1"
type retrieveError struct {
name string
value string
err error
}
func (e *retrieveError) Error() error {
return fmt.Errorf("Error retrieving ID of %s %s: %s", e.name, e.value, e.err)
}
func setValueOrID(d *schema.ResourceData, key string, value string, id string) {
if isID(d.Get(key).(string)) {
// If the given id is an empty string, check if the configured value matches
// the UnlimitedResourceID in which case we set id to UnlimitedResourceID
if id == "" && d.Get(key).(string) == UnlimitedResourceID {
id = UnlimitedResourceID
}
d.Set(key, id)
} else {
d.Set(key, value)
}
}
func retrieveID(cs *cloudstack.CloudStackClient, name, value string) (id string, e *retrieveError) {
// If the supplied value isn't a ID, try to retrieve the ID ourselves
if isID(value) {
return value, nil
}
log.Printf("[DEBUG] Retrieving ID of %s: %s", name, value)
var err error
switch name {
case "disk_offering":
id, err = cs.DiskOffering.GetDiskOfferingID(value)
case "virtual_machine":
id, err = cs.VirtualMachine.GetVirtualMachineID(value)
case "service_offering":
id, err = cs.ServiceOffering.GetServiceOfferingID(value)
case "network_offering":
id, err = cs.NetworkOffering.GetNetworkOfferingID(value)
case "project":
id, err = cs.Project.GetProjectID(value)
case "vpc_offering":
id, err = cs.VPC.GetVPCOfferingID(value)
case "vpc":
id, err = cs.VPC.GetVPCID(value)
case "network":
id, err = cs.Network.GetNetworkID(value)
case "zone":
id, err = cs.Zone.GetZoneID(value)
case "ipaddress":
p := cs.Address.NewListPublicIpAddressesParams()
p.SetIpaddress(value)
l, e := cs.Address.ListPublicIpAddresses(p)
if e != nil {
err = e
break
}
if l.Count == 1 {
id = l.PublicIpAddresses[0].Id
break
}
err = fmt.Errorf("Could not find ID of IP address: %s", value)
case "os_type":
p := cs.GuestOS.NewListOsTypesParams()
p.SetDescription(value)
l, e := cs.GuestOS.ListOsTypes(p)
if e != nil {
err = e
break
}
if l.Count == 1 {
id = l.OsTypes[0].Id
break
}
err = fmt.Errorf("Could not find ID of OS Type: %s", value)
default:
return id, &retrieveError{name: name, value: value,
err: fmt.Errorf("Unknown request: %s", name)}
}
if err != nil {
return id, &retrieveError{name: name, value: value, err: err}
}
return id, nil
}
func retrieveTemplateID(cs *cloudstack.CloudStackClient, zoneid, value string) (id string, e *retrieveError) {
// If the supplied value isn't a ID, try to retrieve the ID ourselves
if isID(value) {
return value, nil
}
log.Printf("[DEBUG] Retrieving ID of template: %s", value)
id, err := cs.Template.GetTemplateID(value, "executable", zoneid)
if err != nil {
return id, &retrieveError{name: "template", value: value, err: err}
}
return id, nil
}
// ID can be either a UUID or a UnlimitedResourceID
func isID(id string) bool {
re := regexp.MustCompile(`^([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}|-1)$`)
return re.MatchString(id)
}
// RetryFunc is the function retried n times
type RetryFunc func() (interface{}, error)
// Retry is a wrapper around a RetryFunc that will retry a function
// n times or until it succeeds.
func Retry(n int, f RetryFunc) (interface{}, error) {
var lastErr error
for i := 0; i < n; i++ {
r, err := f()
if err == nil || err == cloudstack.AsyncTimeoutErr {
return r, err
}
lastErr = err
time.Sleep(30 * time.Second)
}
return nil, lastErr
}
// This is a temporary helper function to support both the new
// cidr_list and the deprecated source_cidr parameter
func retrieveCidrList(rule map[string]interface{}) []string {
sourceCidr := rule["source_cidr"].(string)
if sourceCidr != "" {
return []string{sourceCidr}
}
var cidrList []string
for _, cidr := range rule["cidr_list"].(*schema.Set).List() {
cidrList = append(cidrList, cidr.(string))
}
return cidrList
}
// This is a temporary helper function to support both the new
// cidr_list and the deprecated source_cidr parameter
func setCidrList(rule map[string]interface{}, cidrList string) {
sourceCidr := rule["source_cidr"].(string)
if sourceCidr != "" {
rule["source_cidr"] = cidrList
return
}
cidrs := &schema.Set{F: schema.HashString}
for _, cidr := range strings.Split(cidrList, ",") {
cidrs.Add(cidr)
}
rule["cidr_list"] = cidrs
}