terraform/builtin/providers/ignition/resource_ignition_config.go

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package ignition
import (
"encoding/json"
"fmt"
"github.com/hashicorp/terraform/helper/schema"
"github.com/coreos/ignition/config/types"
)
var configReferenceResource = &schema.Resource{
Schema: map[string]*schema.Schema{
"source": &schema.Schema{
Type: schema.TypeString,
ForceNew: true,
Required: true,
},
"verification": &schema.Schema{
Type: schema.TypeString,
ForceNew: true,
Optional: true,
},
},
}
func resourceConfig() *schema.Resource {
return &schema.Resource{
Exists: resourceIgnitionFileExists,
Read: resourceIgnitionFileRead,
Schema: map[string]*schema.Schema{
"disks": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"arrays": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"filesystems": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"files": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"systemd": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"networkd": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"users": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"groups": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"replace": &schema.Schema{
Type: schema.TypeList,
ForceNew: true,
Optional: true,
MaxItems: 1,
Elem: configReferenceResource,
},
"append": &schema.Schema{
Type: schema.TypeList,
ForceNew: true,
Optional: true,
Elem: configReferenceResource,
},
"rendered": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
},
}
}
func resourceIgnitionFileRead(d *schema.ResourceData, meta interface{}) error {
rendered, err := renderConfig(d, meta.(*cache))
if err != nil {
return err
}
if err := d.Set("rendered", rendered); err != nil {
return err
}
d.SetId(hash(rendered))
return nil
}
func resourceIgnitionFileExists(d *schema.ResourceData, meta interface{}) (bool, error) {
rendered, err := renderConfig(d, meta.(*cache))
if err != nil {
return false, err
}
return hash(rendered) == d.Id(), nil
}
func renderConfig(d *schema.ResourceData, c *cache) (string, error) {
i, err := buildConfig(d, c)
if err != nil {
return "", err
}
bytes, err := json.MarshalIndent(i, " ", " ")
if err != nil {
return "", err
}
return string(bytes), nil
}
func buildConfig(d *schema.ResourceData, c *cache) (*types.Config, error) {
var err error
config := &types.Config{}
config.Ignition, err = buildIgnition(d)
if err != nil {
return nil, err
}
config.Storage, err = buildStorage(d, c)
if err != nil {
return nil, err
}
config.Systemd, err = buildSystemd(d, c)
if err != nil {
return nil, err
}
config.Networkd, err = buildNetworkd(d, c)
if err != nil {
return nil, err
}
config.Passwd, err = buildPasswd(d, c)
if err != nil {
return nil, err
}
return config, nil
}
func buildIgnition(d *schema.ResourceData) (types.Ignition, error) {
var err error
i := types.Ignition{}
i.Version.UnmarshalJSON([]byte(`"2.0.0"`))
rr := d.Get("replace.0").(map[string]interface{})
if len(rr) != 0 {
i.Config.Replace, err = buildConfigReference(rr)
if err != nil {
return i, err
}
}
ar := d.Get("append").([]interface{})
if len(ar) != 0 {
for _, rr := range ar {
r, err := buildConfigReference(rr.(map[string]interface{}))
if err != nil {
return i, err
}
i.Config.Append = append(i.Config.Append, *r)
}
}
return i, nil
}
func buildConfigReference(raw map[string]interface{}) (*types.ConfigReference, error) {
r := &types.ConfigReference{}
src, err := buildURL(raw["source"].(string))
if err != nil {
return nil, err
}
r.Source = src
hash, err := buildHash(raw["verification"].(string))
if err != nil {
return nil, err
}
r.Verification.Hash = &hash
return r, nil
}
func buildStorage(d *schema.ResourceData, c *cache) (types.Storage, error) {
storage := types.Storage{}
for _, id := range d.Get("disks").([]interface{}) {
d, ok := c.disks[id.(string)]
if !ok {
return storage, fmt.Errorf("invalid disk %q, unknown disk id", id)
}
storage.Disks = append(storage.Disks, *d)
}
for _, id := range d.Get("arrays").([]interface{}) {
a, ok := c.arrays[id.(string)]
if !ok {
return storage, fmt.Errorf("invalid raid %q, unknown raid id", id)
}
storage.Arrays = append(storage.Arrays, *a)
}
for _, id := range d.Get("filesystems").([]interface{}) {
f, ok := c.filesystems[id.(string)]
if !ok {
return storage, fmt.Errorf("invalid filesystem %q, unknown filesystem id", id)
}
storage.Filesystems = append(storage.Filesystems, *f)
}
for _, id := range d.Get("files").([]interface{}) {
f, ok := c.files[id.(string)]
if !ok {
return storage, fmt.Errorf("invalid file %q, unknown file id", id)
}
storage.Files = append(storage.Files, *f)
}
return storage, nil
}
func buildSystemd(d *schema.ResourceData, c *cache) (types.Systemd, error) {
systemd := types.Systemd{}
for _, id := range d.Get("systemd").([]interface{}) {
u, ok := c.systemdUnits[id.(string)]
if !ok {
return systemd, fmt.Errorf("invalid systemd unit %q, unknown systemd unit id", id)
}
systemd.Units = append(systemd.Units, *u)
}
return systemd, nil
}
func buildNetworkd(d *schema.ResourceData, c *cache) (types.Networkd, error) {
networkd := types.Networkd{}
for _, id := range d.Get("networkd").([]interface{}) {
u, ok := c.networkdUnits[id.(string)]
if !ok {
return networkd, fmt.Errorf("invalid networkd unit %q, unknown networkd unit id", id)
}
networkd.Units = append(networkd.Units, *u)
}
return networkd, nil
}
func buildPasswd(d *schema.ResourceData, c *cache) (types.Passwd, error) {
passwd := types.Passwd{}
for _, id := range d.Get("users").([]interface{}) {
u, ok := c.users[id.(string)]
if !ok {
return passwd, fmt.Errorf("invalid user %q, unknown user id", id)
}
passwd.Users = append(passwd.Users, *u)
}
for _, id := range d.Get("groups").([]interface{}) {
g, ok := c.groups[id.(string)]
if !ok {
return passwd, fmt.Errorf("invalid group %q, unknown group id", id)
}
passwd.Groups = append(passwd.Groups, *g)
}
return passwd, nil
}