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package extensions
import (
"github.com/gophercloud/gophercloud"
"github.com/gophercloud/gophercloud/pagination"
)
// GetResult temporarily stores the result of a Get call.
// Use its Extract() method to interpret it as an Extension.
type GetResult struct {
gophercloud.Result
}
// Extract interprets a GetResult as an Extension.
func (r GetResult) Extract() (*Extension, error) {
var s struct {
Extension *Extension `json:"extension"`
}
err := r.ExtractInto(&s)
return s.Extension, err
}
// Extension is a struct that represents an OpenStack extension.
type Extension struct {
Updated string `json:"updated"`
Name string `json:"name"`
Links []interface{} `json:"links"`
Namespace string `json:"namespace"`
Alias string `json:"alias"`
Description string `json:"description"`
}
// ExtensionPage is the page returned by a pager when traversing over a collection of extensions.
type ExtensionPage struct {
pagination.SinglePageBase
}
// IsEmpty checks whether an ExtensionPage struct is empty.
func (r ExtensionPage) IsEmpty() (bool, error) {
is, err := ExtractExtensions(r)
return len(is) == 0, err
}
// ExtractExtensions accepts a Page struct, specifically an ExtensionPage
// struct, and extracts the elements into a slice of Extension structs.
// In other words, a generic collection is mapped into a relevant slice.
func ExtractExtensions(r pagination.Page) ([]Extension, error) {
var s struct {
Extensions []Extension `json:"extensions"`
}
err := (r.(ExtensionPage)).ExtractInto(&s)
return s.Extensions, err
}
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