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package apiversions
import (
"time"
"github.com/gophercloud/gophercloud/pagination"
)
// APIVersion represents an API version for Cinder.
type APIVersion struct {
// ID is the unique identifier of the API version.
ID string `json:"id"`
// MinVersion is the minimum microversion supported.
MinVersion string `json:"min_version"`
// Status represents the status of the API version.
Status string `json:"status"`
// Updated is the date the API version was updated.
Updated time.Time `json:"updated"`
// Version is the current version and microversion.
Version string `json:"version"`
}
// 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) {
if r.StatusCode == 204 {
return true, nil
}
is, err := ExtractAPIVersions(r)
return len(is) == 0, err
}
// 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(r pagination.Page) ([]APIVersion, error) {
var s struct {
Versions []APIVersion `json:"versions"`
}
err := (r.(APIVersionPage)).ExtractInto(&s)
return s.Versions, err
}
// ExtractAPIVersion takes a List result and extracts a single requested
// version, which is returned as an APIVersion
func ExtractAPIVersion(r pagination.Page, v string) (*APIVersion, error) {
allVersions, err := ExtractAPIVersions(r)
if err != nil {
return nil, err
}
for _, version := range allVersions {
if version.ID == v {
return &version, nil
}
}
return nil, ErrVersionNotFound{}
}
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