49 lines
890 B
Go
49 lines
890 B
Go
package datasource
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import (
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"io/ioutil"
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"os"
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"path"
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)
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type configDrive struct {
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root string
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}
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func NewConfigDrive(root string) *configDrive {
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return &configDrive{path.Join(root, "openstack")}
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}
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func (cd *configDrive) IsAvailable() bool {
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_, err := os.Stat(cd.root)
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return !os.IsNotExist(err)
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}
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func (cd *configDrive) AvailabilityChanges() bool {
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return true
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}
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func (cd *configDrive) ConfigRoot() string {
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return cd.root
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}
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func (cd *configDrive) FetchMetadata() ([]byte, error) {
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return cd.readFile("meta_data.json")
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}
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func (cd *configDrive) FetchUserdata() ([]byte, error) {
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return cd.readFile("user_data")
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}
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func (cd *configDrive) Type() string {
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return "cloud-drive"
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}
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func (cd *configDrive) readFile(filename string) ([]byte, error) {
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data, err := ioutil.ReadFile(path.Join(cd.root, "latest", filename))
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if os.IsNotExist(err) {
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err = nil
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}
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return data, err
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}
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