datasource

type Datasource interface {
	IsAvailable() bool
	AvailabilityChanges() bool
	ConfigRoot() string
	FetchMetadata() (Metadata, error)
	FetchUserdata() ([]byte, error)
	Type() string
	String() string
	// Finish gives the datasource the oportunity to clean up, unmount or release any open / cache resources
	Finish() error
}

type Metadata struct {
	// TODO: move to netconf/types.go ?
	// see https://ahmetalpbalkan.com/blog/comparison-of-instance-metadata-services/
	Hostname      string
	SSHPublicKeys map[string]string
	NetworkConfig netconf.NetworkConfig

	PublicIPv4  net.IP
	PublicIPv6  net.IP
	PrivateIPv4 net.IP
	PrivateIPv6 net.IP
}