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package apiversions
import (
"github.com/mitchellh/mapstructure"
"github.com/rackspace/gophercloud"
"github.com/rackspace/gophercloud/pagination"
)
// APIVersion represents an API version for Neutron. It contains the status of
// the API, and its unique ID.
type APIVersion struct {
Status string `mapstructure:"status"`
ID string `mapstructure:"id"`
Links []gophercloud.Link `mapstructure:"links"`
}
// 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
}
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