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results.go
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results.go
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package volumes
import (
os "github.com/rackspace/gophercloud/openstack/blockstorage/v1/volumes"
"github.com/rackspace/gophercloud/pagination"
"github.com/mitchellh/mapstructure"
)
// Volume wraps an Openstack volume
type Volume os.Volume
// CreateResult represents the result of a create operation
type CreateResult struct {
os.CreateResult
}
// GetResult represents the result of a get operation
type GetResult struct {
os.GetResult
}
// UpdateResult represents the result of an update operation
type UpdateResult struct {
os.UpdateResult
}
func commonExtract(resp interface{}, err error) (*Volume, error) {
if err != nil {
return nil, err
}
var respStruct struct {
Volume *Volume `json:"volume"`
}
err = mapstructure.Decode(resp, &respStruct)
return respStruct.Volume, err
}
// Extract will get the Volume object out of the GetResult object.
func (r GetResult) Extract() (*Volume, error) {
return commonExtract(r.Body, r.Err)
}
// Extract will get the Volume object out of the CreateResult object.
func (r CreateResult) Extract() (*Volume, error) {
return commonExtract(r.Body, r.Err)
}
// Extract will get the Volume object out of the UpdateResult object.
func (r UpdateResult) Extract() (*Volume, error) {
return commonExtract(r.Body, r.Err)
}
// ExtractVolumes extracts and returns Volumes. It is used while iterating over a volumes.List call.
func ExtractVolumes(page pagination.Page) ([]Volume, error) {
var response struct {
Volumes []Volume `json:"volumes"`
}
err := mapstructure.Decode(page.(os.ListResult).Body, &response)
return response.Volumes, err
}