kubernetes/vendor/github.com/gogo/protobuf/proto/duration.go

const maxSeconds …

const minSeconds …

// validateDuration determines whether the Duration is valid according to the
// definition in google/protobuf/duration.proto. A valid Duration
// may still be too large to fit into a time.Duration (the range of Duration
// is about 10,000 years, and the range of time.Duration is about 290).
func validateDuration(d *duration) error { … }

// DurationFromProto converts a Duration to a time.Duration. DurationFromProto
// returns an error if the Duration is invalid or is too large to be
// represented in a time.Duration.
func durationFromProto(p *duration) (time.Duration, error) { … }

// DurationProto converts a time.Duration to a Duration.
func durationProto(d time.Duration) *duration { … }