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package flavors
import (
"reflect"
"github.com/rackspace/gophercloud"
"github.com/mitchellh/mapstructure"
os "github.com/rackspace/gophercloud/openstack/compute/v2/flavors"
"github.com/rackspace/gophercloud/pagination"
)
// ExtraSpecs provide additional information about the flavor.
type ExtraSpecs struct {
// The number of data disks
NumDataDisks int `mapstructure:"number_of_data_disks"`
// The flavor class
Class string `mapstructure:"class"`
// Relative measure of disk I/O performance from 0-99, where higher is faster
DiskIOIndex int `mapstructure:"disk_io_index"`
PolicyClass string `mapstructure:"policy_class"`
}
// Flavor records represent (virtual) hardware configurations for server resources in a region.
type Flavor struct {
// The Id field contains the flavor's unique identifier.
// For example, this identifier will be useful when specifying which hardware configuration to use for a new server instance.
ID string `mapstructure:"id"`
// The Disk and RA< fields provide a measure of storage space offered by the flavor, in GB and MB, respectively.
Disk int `mapstructure:"disk"`
RAM int `mapstructure:"ram"`
// The Name field provides a human-readable moniker for the flavor.
Name string `mapstructure:"name"`
RxTxFactor float64 `mapstructure:"rxtx_factor"`
// Swap indicates how much space is reserved for swap.
// If not provided, this field will be set to 0.
Swap int `mapstructure:"swap"`
// VCPUs indicates how many (virtual) CPUs are available for this flavor.
VCPUs int `mapstructure:"vcpus"`
// ExtraSpecs provides extra information about the flavor
ExtraSpecs ExtraSpecs `mapstructure:"OS-FLV-WITH-EXT-SPECS:extra_specs"`
}
// GetResult temporarily holds the response from a Get call.
type GetResult struct {
gophercloud.Result
}
// Extract provides access to the individual Flavor returned by the Get function.
func (gr GetResult) Extract() (*Flavor, error) {
if gr.Err != nil {
return nil, gr.Err
}
var result struct {
Flavor Flavor `mapstructure:"flavor"`
}
cfg := &mapstructure.DecoderConfig{
DecodeHook: defaulter,
Result: &result,
}
decoder, err := mapstructure.NewDecoder(cfg)
if err != nil {
return nil, err
}
err = decoder.Decode(gr.Body)
return &result.Flavor, err
}
func defaulter(from, to reflect.Kind, v interface{}) (interface{}, error) {
if (from == reflect.String) && (to == reflect.Int) {
return 0, nil
}
return v, nil
}
// ExtractFlavors provides access to the list of flavors in a page acquired from the List operation.
func ExtractFlavors(page pagination.Page) ([]Flavor, error) {
casted := page.(os.FlavorPage).Body
var container struct {
Flavors []Flavor `mapstructure:"flavors"`
}
cfg := &mapstructure.DecoderConfig{
DecodeHook: defaulter,
Result: &container,
}
decoder, err := mapstructure.NewDecoder(cfg)
if err != nil {
return container.Flavors, err
}
err = decoder.Decode(casted)
if err != nil {
return container.Flavors, err
}
return container.Flavors, nil
}
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