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package apiversions
import (
"github.com/rackspace/gophercloud"
"github.com/rackspace/gophercloud/pagination"
"github.com/mitchellh/mapstructure"
)
// APIVersion represents an API version for Cinder.
type APIVersion struct {
ID string `json:"id" mapstructure:"id"` // unique identifier
Status string `json:"status" mapstructure:"status"` // current status
Updated string `json:"updated" mapstructure:"updated"` // date last updated
}
// APIVersionPage is the page returned by a pager when traversing over a
// collection of API versions.
type APIVersionPage struct {
pagination.SinglePageBase
}
// IsEmpty checks whether an APIVersionPage struct is empty.
func (r APIVersionPage) IsEmpty() (bool, error) {
is, err := ExtractAPIVersions(r)
if err != nil {
return true, err
}
return len(is) == 0, nil
}
// ExtractAPIVersions takes a collection page, extracts all of the elements,
// and returns them a slice of APIVersion structs. It is effectively a cast.
func ExtractAPIVersions(page pagination.Page) ([]APIVersion, error) {
var resp struct {
Versions []APIVersion `mapstructure:"versions"`
}
err := mapstructure.Decode(page.(APIVersionPage).Body, &resp)
return resp.Versions, err
}
// GetResult represents the result of a get operation.
type GetResult struct {
gophercloud.Result
}
// Extract is a function that accepts a result and extracts an API version resource.
func (r GetResult) Extract() (*APIVersion, error) {
var resp struct {
Version *APIVersion `mapstructure:"version"`
}
err := mapstructure.Decode(r.Body, &resp)
return resp.Version, err
}
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