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helper/schema: add GetOk

This commit is contained in:
Mitchell Hashimoto 2014-08-21 23:03:04 -07:00
parent 37cf52fa27
commit 7be2f1b091
3 changed files with 276 additions and 68 deletions
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10
builtin/providers/aws/resource_aws_instance.go
View File

@ -78,7 +78,6 @@ func resourceAwsInstance() *schema.Resource {
"source_dest_check": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
// TODO: Hidden
},
"user_data": &schema.Schema{
@ -195,11 +194,10 @@ func resourceAwsInstanceCreate(d *schema.ResourceData, meta interface{}) error {
instance = instanceRaw.(*ec2.Instance)
// Initialize the connection info
/*
TODO: conninfo
rs.ConnInfo["type"] = "ssh"
rs.ConnInfo["host"] = instance.PublicIpAddress
*/
d.SetConnInfo(map[string]string{
"type": "ssh",
"host": instance.PublicIpAddress,
})
// Set our attributes
if err := resourceAwsInstanceRead(d, meta); err != nil {

162
helper/schema/resource_data.go
View File

@ -23,6 +23,15 @@ const (
getSourceSet
)
// getResult is the internal structure that is generated when a Get
// is called that contains some extra data that might be used.
type getResult struct {
Value interface{}
Exists bool
}
var getResultEmpty getResult
// ResourceData is used to query and set the attributes of a resource.
type ResourceData struct {
schema map[string]*Schema
@ -36,25 +45,38 @@ type ResourceData struct {
once sync.Once
}
// Get returns the data for the given key, or nil if the key doesn't exist.
// Get returns the data for the given key, or nil if the key doesn't exist
// in the schema.
//
// The type of the data returned will be according to the schema specified.
// Primitives will be their respective types in Go, lists will always be
// []interface{}, and sub-resources will be map[string]interface{}.
// If the key does exist in the schema but doesn't exist in the configuration,
// then the default value for that type will be returned. For strings, this is
// "", for numbers it is 0, etc.
//
// If you also want to test if something is set at all, use GetOk.
func (d *ResourceData) Get(key string) interface{} {
var parts []string
if key != "" {
parts = strings.Split(key, ".")
}
return d.getObject("", parts, d.schema, getSourceSet)
v, _ := d.GetOk(key)
return v
}
// GetChange returns the old and new value for a given key.
//
// If there is no change, then old and new will simply be the same.
func (d *ResourceData) GetChange(key string) (interface{}, interface{}) {
return d.getChange(key, getSourceConfig, getSourceDiff)
o, n := d.getChange(key, getSourceConfig, getSourceDiff)
return o.Value, n.Value
}
// GetOk returns the data for the given key and whether or not the key
// existed or not in the configuration. The second boolean result will also
// be false if a key is given that isn't in the schema at all.
func (d *ResourceData) GetOk(key string) (interface{}, bool) {
var parts []string
if key != "" {
parts = strings.Split(key, ".")
}
r := d.getObject("", parts, d.schema, getSourceSet)
return r.Value, r.Exists
}
// HasChange returns whether or not the given key has been changed.
@ -171,15 +193,21 @@ func (d *ResourceData) init() {
func (d *ResourceData) diffChange(k string) (interface{}, interface{}, bool) {
// Get the change between the state and the config.
o, n := d.getChange(k, getSourceState, getSourceConfig)
if !o.Exists {
o.Value = nil
}
if !n.Exists {
n.Value = nil
}
// Return the old, new, and whether there is a change
return o, n, !reflect.DeepEqual(o, n)
return o.Value, n.Value, !reflect.DeepEqual(o.Value, n.Value)
}
func (d *ResourceData) getChange(
key string,
oldLevel getSource,
newLevel getSource) (interface{}, interface{}) {
newLevel getSource) (getResult, getResult) {
var parts, parts2 []string
if key != "" {
parts = strings.Split(key, ".")
@ -195,7 +223,7 @@ func (d *ResourceData) get(
k string,
parts []string,
schema *Schema,
source getSource) interface{} {
source getSource) getResult {
switch schema.Type {
case TypeList:
return d.getList(k, parts, schema, source)
@ -218,24 +246,25 @@ func (d *ResourceData) getSet(
k string,
parts []string,
schema *Schema,
source getSource) interface{} {
source getSource) getResult {
s := &Set{F: schema.Set}
result := getResult{Value: s}
raw := d.getList(k, nil, schema, source)
if raw == nil {
if !raw.Exists {
if len(parts) > 0 {
return d.getList(k, parts, schema, source)
}
return s
return result
}
list := raw.([]interface{})
list := raw.Value.([]interface{})
if len(list) == 0 {
if len(parts) > 0 {
return d.getList(k, parts, schema, source)
}
return s
return result
}
// This is a reverse map of hash code => index in config used to
@ -269,12 +298,12 @@ func (d *ResourceData) getSet(
index := parts[0]
indexInt, err := strconv.ParseInt(index, 0, 0)
if err != nil {
return nil
return getResultEmpty
}
codes := s.listCode()
if int(indexInt) >= len(codes) {
return nil
return getResultEmpty
}
code := codes[indexInt]
realIndex := indexMap[code]
@ -283,17 +312,19 @@ func (d *ResourceData) getSet(
return d.getList(k, parts, schema, source)
}
return s
result.Exists = true
return result
}
func (d *ResourceData) getMap(
k string,
parts []string,
schema *Schema,
source getSource) interface{} {
source getSource) getResult {
elemSchema := &Schema{Type: TypeString}
result := make(map[string]interface{})
resultSet := false
prefix := k + "."
if d.state != nil && source >= getSourceState {
@ -303,7 +334,8 @@ func (d *ResourceData) getMap(
}
single := k[len(prefix):]
result[single] = d.getPrimitive(k, nil, elemSchema, source)
result[single] = d.getPrimitive(k, nil, elemSchema, source).Value
resultSet = true
}
}
@ -311,6 +343,7 @@ func (d *ResourceData) getMap(
// For config, we always set the result to exactly what was requested
if m, ok := d.config.Get(k); ok {
result = m.(map[string]interface{})
resultSet = true
} else {
result = nil
}
@ -321,13 +354,14 @@ func (d *ResourceData) getMap(
if !strings.HasPrefix(k, prefix) {
continue
}
resultSet = true
single := k[len(prefix):]
if v.NewRemoved {
delete(result, single)
} else {
result[single] = d.getPrimitive(k, nil, elemSchema, source)
result[single] = d.getPrimitive(k, nil, elemSchema, source).Value
}
}
}
@ -338,6 +372,8 @@ func (d *ResourceData) getMap(
if !strings.HasPrefix(k, prefix) {
continue
}
resultSet = true
if !cleared {
// We clear the results if they are in the set map
result = make(map[string]interface{})
@ -345,30 +381,34 @@ func (d *ResourceData) getMap(
}
single := k[len(prefix):]
result[single] = d.getPrimitive(k, nil, elemSchema, source)
result[single] = d.getPrimitive(k, nil, elemSchema, source).Value
}
}
// If we're requesting a specific element, return that
var resultValue interface{} = result
if len(parts) > 0 {
return result[parts[0]]
resultValue = result[parts[0]]
}
return result
return getResult{
Value: resultValue,
Exists: resultSet,
}
}
func (d *ResourceData) getObject(
k string,
parts []string,
schema map[string]*Schema,
source getSource) interface{} {
source getSource) getResult {
if len(parts) > 0 {
// We're requesting a specific key in an object
key := parts[0]
parts = parts[1:]
s, ok := schema[key]
if !ok {
return nil
return getResultEmpty
}
if k != "" {
@ -383,17 +423,20 @@ func (d *ResourceData) getObject(
// Get the entire object
result := make(map[string]interface{})
for field, _ := range schema {
result[field] = d.getObject(k, []string{field}, schema, source)
result[field] = d.getObject(k, []string{field}, schema, source).Value
}
return result
return getResult{
Value: result,
Exists: true,
}
}
func (d *ResourceData) getList(
k string,
parts []string,
schema *Schema,
source getSource) interface{} {
source getSource) getResult {
if len(parts) > 0 {
// We still have parts left over meaning we're accessing an
// element of this list.
@ -403,12 +446,7 @@ func (d *ResourceData) getList(
// Special case if we're accessing the count of the list
if idx == "#" {
schema := &Schema{Type: TypeInt}
result := d.get(k+".#", parts, schema, source)
if result == nil {
result = 0
}
return result
return d.get(k+".#", parts, schema, source)
}
key := fmt.Sprintf("%s.%s", k, idx)
@ -421,22 +459,24 @@ func (d *ResourceData) getList(
}
// Get the entire list.
result := make(
[]interface{},
d.getList(k, []string{"#"}, schema, source).(int))
count := d.getList(k, []string{"#"}, schema, source)
result := make([]interface{}, count.Value.(int))
for i, _ := range result {
is := strconv.FormatInt(int64(i), 10)
result[i] = d.getList(k, []string{is}, schema, source)
result[i] = d.getList(k, []string{is}, schema, source).Value
}
return result
return getResult{
Value: result,
Exists: count.Exists,
}
}
func (d *ResourceData) getPrimitive(
k string,
parts []string,
schema *Schema,
source getSource) interface{} {
source getSource) getResult {
var result string
var resultSet bool
if d.state != nil && source >= getSourceState {
@ -474,13 +514,15 @@ func (d *ResourceData) getPrimitive(
}
if !resultSet {
return nil
result = ""
}
var resultValue interface{}
switch schema.Type {
case TypeBool:
if result == "" {
return false
resultValue = false
break
}
v, err := strconv.ParseBool(result)
@ -488,13 +530,14 @@ func (d *ResourceData) getPrimitive(
panic(err)
}
return v
resultValue = v
case TypeString:
// Use the value as-is. We just put this case here to be explicit.
return result
resultValue = result
case TypeInt:
if result == "" {
return 0
resultValue = 0
break
}
v, err := strconv.ParseInt(result, 0, 0)
@ -502,10 +545,15 @@ func (d *ResourceData) getPrimitive(
panic(err)
}
return int(v)
resultValue = int(v)
default:
panic(fmt.Sprintf("Unknown type: %s", schema.Type))
}
return getResult{
Value: resultValue,
Exists: resultSet,
}
}
func (d *ResourceData) set(
@ -727,10 +775,10 @@ func (d *ResourceData) stateList(
prefix string,
schema *Schema) map[string]string {
countRaw := d.get(prefix, []string{"#"}, schema, getSourceSet)
if countRaw == nil {
if !countRaw.Exists {
return nil
}
count := countRaw.(int)
count := countRaw.Value.(int)
result := make(map[string]string)
if count > 0 {
@ -759,13 +807,13 @@ func (d *ResourceData) stateMap(
prefix string,
schema *Schema) map[string]string {
v := d.getMap(prefix, nil, schema, getSourceSet)
if v == nil {
if !v.Exists {
return nil
}
elemSchema := &Schema{Type: TypeString}
result := make(map[string]string)
for mk, _ := range v.(map[string]interface{}) {
for mk, _ := range v.Value.(map[string]interface{}) {
mp := fmt.Sprintf("%s.%s", prefix, mk)
for k, v := range d.stateSingle(mp, elemSchema) {
result[k] = v
@ -822,11 +870,11 @@ func (d *ResourceData) stateSet(
prefix string,
schema *Schema) map[string]string {
raw := d.get(prefix, nil, schema, getSourceSet)
if raw == nil {
if !raw.Exists {
return nil
}
set := raw.(*Set)
set := raw.Value.(*Set)
list := set.List()
result := make(map[string]string)
result[prefix+".#"] = strconv.FormatInt(int64(len(list)), 10)

170
helper/schema/resource_data_test.go
View File

@ -38,8 +38,7 @@ func TestResourceDataGet(t *testing.T) {
},
Key: "availability_zone",
Value: nil,
Value: "",
},
{
@ -524,7 +523,7 @@ func TestResourceDataGetChange(t *testing.T) {
Key: "availability_zone",
OldValue: nil,
OldValue: "",
NewValue: "foo",
},
@ -577,6 +576,169 @@ func TestResourceDataGetChange(t *testing.T) {
}
}
func TestResourceDataGetOk(t *testing.T) {
cases := []struct {
Schema map[string]*Schema
State *terraform.ResourceState
Diff *terraform.ResourceDiff
Key string
Value interface{}
Ok bool
}{
/*
* Primitives
*/
{
Schema: map[string]*Schema{
"availability_zone": &Schema{
Type: TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
},
State: nil,
Diff: &terraform.ResourceDiff{
Attributes: map[string]*terraform.ResourceAttrDiff{
"availability_zone": &terraform.ResourceAttrDiff{
Old: "",
New: "",
},
},
},
Key: "availability_zone",
Value: "",
Ok: true,
},
{
Schema: map[string]*Schema{
"availability_zone": &Schema{
Type: TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
},
State: nil,
Diff: nil,
Key: "availability_zone",
Value: "",
Ok: false,
},
/*
* Lists
*/
{
Schema: map[string]*Schema{
"ports": &Schema{
Type: TypeList,
Optional: true,
Elem: &Schema{Type: TypeInt},
},
},
State: nil,
Diff: nil,
Key: "ports",
Value: []interface{}{},
Ok: false,
},
/*
* Map
*/
{
Schema: map[string]*Schema{
"ports": &Schema{
Type: TypeMap,
Optional: true,
},
},
State: nil,
Diff: nil,
Key: "ports",
Value: map[string]interface{}{},
Ok: false,
},
/*
* Set
*/
{
Schema: map[string]*Schema{
"ports": &Schema{
Type: TypeSet,
Optional: true,
Elem: &Schema{Type: TypeInt},
Set: func(a interface{}) int { return a.(int) },
},
},
State: nil,
Diff: nil,
Key: "ports",
Value: []interface{}{},
Ok: false,
},
{
Schema: map[string]*Schema{
"ports": &Schema{
Type: TypeSet,
Optional: true,
Elem: &Schema{Type: TypeInt},
Set: func(a interface{}) int { return a.(int) },
},
},
State: nil,
Diff: nil,
Key: "ports.0",
Value: 0,
Ok: false,
},
}
for i, tc := range cases {
d, err := schemaMap(tc.Schema).Data(tc.State, tc.Diff)
if err != nil {
t.Fatalf("err: %s", err)
}
v, ok := d.GetOk(tc.Key)
if s, ok := v.(*Set); ok {
v = s.List()
}
if !reflect.DeepEqual(v, tc.Value) {
t.Fatalf("Bad: %d\n\n%#v", i, v)
}
if ok != tc.Ok {
t.Fatalf("Bad: %d\n\n%#v", i, ok)
}
}
}
func TestResourceDataHasChange(t *testing.T) {
cases := []struct {
Schema map[string]*Schema
@ -771,7 +933,7 @@ func TestResourceDataSet(t *testing.T) {
Err: true,
GetKey: "availability_zone",
GetValue: nil,
GetValue: "",
},
// List of primitives, set element