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package images
import (
"github.com/gophercloud/gophercloud"
"github.com/gophercloud/gophercloud/pagination"
)
// GetResult is the response from a Get operation. Call its Extract method to
// interpret it as an Image.
type GetResult struct {
gophercloud.Result
}
// DeleteResult is the result from a Delete operation. Call its ExtractErr
// method to determine if the call succeeded or failed.
type DeleteResult struct {
gophercloud.ErrResult
}
// Extract interprets a GetResult as an Image.
func (r GetResult) Extract() (*Image, error) {
var s struct {
Image *Image `json:"image"`
}
err := r.ExtractInto(&s)
return s.Image, err
}
// Image represents an Image returned by the Compute API.
type Image struct {
// ID is the unique ID of an image.
ID string
// Created is the date when the image was created.
Created string
// MinDisk is the minimum amount of disk a flavor must have to be able
// to create a server based on the image, measured in GB.
MinDisk int
// MinRAM is the minimum amount of RAM a flavor must have to be able
// to create a server based on the image, measured in MB.
MinRAM int
// Name provides a human-readable moniker for the OS image.
Name string
// The Progress and Status fields indicate image-creation status.
Progress int
// Status is the current status of the image.
Status string
// Update is the date when the image was updated.
Updated string
// Metadata provides free-form key/value pairs that further describe the
// image.
Metadata map[string]interface{}
}
// ImagePage contains a single page of all Images returne from a ListDetail
// operation. Use ExtractImages to convert it into a slice of usable structs.
type ImagePage struct {
pagination.LinkedPageBase
}
// IsEmpty returns true if an ImagePage contains no Image results.
func (page ImagePage) IsEmpty() (bool, error) {
images, err := ExtractImages(page)
return len(images) == 0, err
}
// NextPageURL uses the response's embedded link reference to navigate to the
// next page of results.
func (page ImagePage) NextPageURL() (string, error) {
var s struct {
Links []gophercloud.Link `json:"images_links"`
}
err := page.ExtractInto(&s)
if err != nil {
return "", err
}
return gophercloud.ExtractNextURL(s.Links)
}
// ExtractImages converts a page of List results into a slice of usable Image
// structs.
func ExtractImages(r pagination.Page) ([]Image, error) {
var s struct {
Images []Image `json:"images"`
}
err := (r.(ImagePage)).ExtractInto(&s)
return s.Images, err
}
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