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results.go
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results.go
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package volumes
import (
"github.com/rackspace/gophercloud"
"github.com/rackspace/gophercloud/pagination"
"github.com/mitchellh/mapstructure"
)
// Volume contains all the information associated with an OpenStack Volume.
type Volume struct {
// Current status of the volume.
Status string `mapstructure:"status"`
// Human-readable display name for the volume.
Name string `mapstructure:"display_name"`
// Instances onto which the volume is attached.
Attachments []map[string]interface{} `mapstructure:"attachments"`
// This parameter is no longer used.
AvailabilityZone string `mapstructure:"availability_zone"`
// Indicates whether this is a bootable volume.
Bootable string `mapstructure:"bootable"`
// The date when this volume was created.
CreatedAt string `mapstructure:"created_at"`
// Human-readable description for the volume.
Description string `mapstructure:"display_description"`
// The type of volume to create, either SATA or SSD.
VolumeType string `mapstructure:"volume_type"`
// The ID of the snapshot from which the volume was created
SnapshotID string `mapstructure:"snapshot_id"`
// The ID of another block storage volume from which the current volume was created
SourceVolID string `mapstructure:"source_volid"`
// Arbitrary key-value pairs defined by the user.
Metadata map[string]string `mapstructure:"metadata"`
// Unique identifier for the volume.
ID string `mapstructure:"id"`
// Size of the volume in GB.
Size int `mapstructure:"size"`
}
// CreateResult contains the response body and error from a Create request.
type CreateResult struct {
commonResult
}
// GetResult contains the response body and error from a Get request.
type GetResult struct {
commonResult
}
// DeleteResult contains the response body and error from a Delete request.
type DeleteResult struct {
gophercloud.ErrResult
}
// ListResult is a pagination.pager that is returned from a call to the List function.
type ListResult struct {
pagination.SinglePageBase
}
// IsEmpty returns true if a ListResult contains no Volumes.
func (r ListResult) IsEmpty() (bool, error) {
volumes, err := ExtractVolumes(r)
if err != nil {
return true, err
}
return len(volumes) == 0, nil
}
// 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.(ListResult).Body, &response)
return response.Volumes, err
}
// UpdateResult contains the response body and error from an Update request.
type UpdateResult struct {
commonResult
}
type commonResult struct {
gophercloud.Result
}
// Extract will get the Volume object out of the commonResult object.
func (r commonResult) Extract() (*Volume, error) {
if r.Err != nil {
return nil, r.Err
}
var res struct {
Volume *Volume `json:"volume"`
}
err := mapstructure.Decode(r.Body, &res)
return res.Volume, err
}