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results.go
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results.go
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package stacks
import (
"encoding/json"
"fmt"
"reflect"
"time"
"github.com/mitchellh/mapstructure"
"github.com/rackspace/gophercloud"
"github.com/rackspace/gophercloud/pagination"
)
// CreatedStack represents the object extracted from a Create operation.
type CreatedStack struct {
ID string `mapstructure:"id"`
Links []gophercloud.Link `mapstructure:"links"`
}
// CreateResult represents the result of a Create operation.
type CreateResult struct {
gophercloud.Result
}
// Extract returns a pointer to a CreatedStack object and is called after a
// Create operation.
func (r CreateResult) Extract() (*CreatedStack, error) {
if r.Err != nil {
return nil, r.Err
}
var res struct {
Stack *CreatedStack `mapstructure:"stack"`
}
if err := mapstructure.Decode(r.Body, &res); err != nil {
return nil, err
}
return res.Stack, nil
}
// AdoptResult represents the result of an Adopt operation. AdoptResult has the
// same form as CreateResult.
type AdoptResult struct {
CreateResult
}
// StackPage is a pagination.Pager that is returned from a call to the List function.
type StackPage struct {
pagination.SinglePageBase
}
// IsEmpty returns true if a ListResult contains no Stacks.
func (r StackPage) IsEmpty() (bool, error) {
stacks, err := ExtractStacks(r)
if err != nil {
return true, err
}
return len(stacks) == 0, nil
}
// ListedStack represents an element in the slice extracted from a List operation.
type ListedStack struct {
CreationTime time.Time `mapstructure:"-"`
Description string `mapstructure:"description"`
ID string `mapstructure:"id"`
Links []gophercloud.Link `mapstructure:"links"`
Name string `mapstructure:"stack_name"`
Status string `mapstructure:"stack_status"`
StatusReason string `mapstructure:"stack_status_reason"`
UpdatedTime time.Time `mapstructure:"-"`
}
// ExtractStacks extracts and returns a slice of ListedStack. It is used while iterating
// over a stacks.List call.
func ExtractStacks(page pagination.Page) ([]ListedStack, error) {
casted := page.(StackPage).Body
var res struct {
Stacks []ListedStack `mapstructure:"stacks"`
}
err := mapstructure.Decode(page.(StackPage).Body, &res)
if err != nil {
return nil, err
}
var rawStacks []interface{}
switch casted.(type) {
case map[string]interface{}:
rawStacks = casted.(map[string]interface{})["stacks"].([]interface{})
case map[string][]interface{}:
rawStacks = casted.(map[string][]interface{})["stacks"]
default:
return res.Stacks, fmt.Errorf("Unknown type: %v", reflect.TypeOf(casted))
}
for i := range rawStacks {
thisStack := (rawStacks[i]).(map[string]interface{})
if t, ok := thisStack["creation_time"].(string); ok && t != "" {
creationTime, err := time.Parse(gophercloud.STACK_TIME_FMT, t)
if err != nil {
return res.Stacks, err
}
res.Stacks[i].CreationTime = creationTime
}
if t, ok := thisStack["updated_time"].(string); ok && t != "" {
updatedTime, err := time.Parse(gophercloud.STACK_TIME_FMT, t)
if err != nil {
return res.Stacks, err
}
res.Stacks[i].UpdatedTime = updatedTime
}
}
return res.Stacks, nil
}
// RetrievedStack represents the object extracted from a Get operation.
type RetrievedStack struct {
Capabilities []interface{} `mapstructure:"capabilities"`
CreationTime time.Time `mapstructure:"-"`
Description string `mapstructure:"description"`
DisableRollback bool `mapstructure:"disable_rollback"`
ID string `mapstructure:"id"`
Links []gophercloud.Link `mapstructure:"links"`
NotificationTopics []interface{} `mapstructure:"notification_topics"`
Outputs []map[string]interface{} `mapstructure:"outputs"`
Parameters map[string]string `mapstructure:"parameters"`
Name string `mapstructure:"stack_name"`
Status string `mapstructure:"stack_status"`
StatusReason string `mapstructure:"stack_status_reason"`
TemplateDescription string `mapstructure:"template_description"`
Timeout int `mapstructure:"timeout_mins"`
UpdatedTime time.Time `mapstructure:"-"`
}
// GetResult represents the result of a Get operation.
type GetResult struct {
gophercloud.Result
}
// Extract returns a pointer to a RetrievedStack object and is called after a
// Get operation.
func (r GetResult) Extract() (*RetrievedStack, error) {
if r.Err != nil {
return nil, r.Err
}
var res struct {
Stack *RetrievedStack `mapstructure:"stack"`
}
config := &mapstructure.DecoderConfig{
Result: &res,
WeaklyTypedInput: true,
}
decoder, err := mapstructure.NewDecoder(config)
if err != nil {
return nil, err
}
if err := decoder.Decode(r.Body); err != nil {
return nil, err
}
b := r.Body.(map[string]interface{})["stack"].(map[string]interface{})
if date, ok := b["creation_time"]; ok && date != nil {
t, err := time.Parse(gophercloud.STACK_TIME_FMT, date.(string))
if err != nil {
return nil, err
}
res.Stack.CreationTime = t
}
if date, ok := b["updated_time"]; ok && date != nil {
t, err := time.Parse(gophercloud.STACK_TIME_FMT, date.(string))
if err != nil {
return nil, err
}
res.Stack.UpdatedTime = t
}
return res.Stack, err
}
// UpdateResult represents the result of a Update operation.
type UpdateResult struct {
gophercloud.ErrResult
}
// DeleteResult represents the result of a Delete operation.
type DeleteResult struct {
gophercloud.ErrResult
}
// PreviewedStack represents the result of a Preview operation.
type PreviewedStack struct {
Capabilities []interface{} `mapstructure:"capabilities"`
CreationTime time.Time `mapstructure:"-"`
Description string `mapstructure:"description"`
DisableRollback bool `mapstructure:"disable_rollback"`
ID string `mapstructure:"id"`
Links []gophercloud.Link `mapstructure:"links"`
Name string `mapstructure:"stack_name"`
NotificationTopics []interface{} `mapstructure:"notification_topics"`
Parameters map[string]string `mapstructure:"parameters"`
Resources []map[string]interface{} `mapstructure:"resources"`
Status string `mapstructure:"stack_status"`
StatusReason string `mapstructure:"stack_status_reason"`
TemplateDescription string `mapstructure:"template_description"`
Timeout int `mapstructure:"timeout_mins"`
UpdatedTime time.Time `mapstructure:"-"`
}
// PreviewResult represents the result of a Preview operation.
type PreviewResult struct {
gophercloud.Result
}
// Extract returns a pointer to a PreviewedStack object and is called after a
// Preview operation.
func (r PreviewResult) Extract() (*PreviewedStack, error) {
if r.Err != nil {
return nil, r.Err
}
var res struct {
Stack *PreviewedStack `mapstructure:"stack"`
}
config := &mapstructure.DecoderConfig{
Result: &res,
WeaklyTypedInput: true,
}
decoder, err := mapstructure.NewDecoder(config)
if err != nil {
return nil, err
}
if err := decoder.Decode(r.Body); err != nil {
return nil, err
}
b := r.Body.(map[string]interface{})["stack"].(map[string]interface{})
if date, ok := b["creation_time"]; ok && date != nil {
t, err := time.Parse(gophercloud.STACK_TIME_FMT, date.(string))
if err != nil {
return nil, err
}
res.Stack.CreationTime = t
}
if date, ok := b["updated_time"]; ok && date != nil {
t, err := time.Parse(gophercloud.STACK_TIME_FMT, date.(string))
if err != nil {
return nil, err
}
res.Stack.UpdatedTime = t
}
return res.Stack, err
}
// AbandonedStack represents the result of an Abandon operation.
type AbandonedStack struct {
Status string `mapstructure:"status"`
Name string `mapstructure:"name"`
Template map[string]interface{} `mapstructure:"template"`
Action string `mapstructure:"action"`
ID string `mapstructure:"id"`
Resources map[string]interface{} `mapstructure:"resources"`
}
// AbandonResult represents the result of an Abandon operation.
type AbandonResult struct {
gophercloud.Result
}
// Extract returns a pointer to an AbandonedStack object and is called after an
// Abandon operation.
func (r AbandonResult) Extract() (*AbandonedStack, error) {
if r.Err != nil {
return nil, r.Err
}
var res AbandonedStack
if err := mapstructure.Decode(r.Body, &res); err != nil {
return nil, err
}
return &res, nil
}
// String converts an AbandonResult to a string. This is useful to when passing
// the result of an Abandon operation to an AdoptOpts AdoptStackData field.
func (r AbandonResult) String() (string, error) {
out, err := json.Marshal(r)
if err != nil {
return "", err
}
return string(out), nil
}