kubernetes/vendor/go.etcd.io/etcd/raft/v3/log_unstable.go

type unstable …

// maybeFirstIndex returns the index of the first possible entry in entries
// if it has a snapshot.
func (u *unstable) maybeFirstIndex() (uint64, bool) { … }

// maybeLastIndex returns the last index if it has at least one
// unstable entry or snapshot.
func (u *unstable) maybeLastIndex() (uint64, bool) { … }

// maybeTerm returns the term of the entry at index i, if there
// is any.
func (u *unstable) maybeTerm(i uint64) (uint64, bool) { … }

func (u *unstable) stableTo(i, t uint64) { … }

// shrinkEntriesArray discards the underlying array used by the entries slice
// if most of it isn't being used. This avoids holding references to a bunch of
// potentially large entries that aren't needed anymore. Simply clearing the
// entries wouldn't be safe because clients might still be using them.
func (u *unstable) shrinkEntriesArray() { … }

func (u *unstable) stableSnapTo(i uint64) { … }

func (u *unstable) restore(s pb.Snapshot) { … }

func (u *unstable) truncateAndAppend(ents []pb.Entry) { … }

func (u *unstable) slice(lo uint64, hi uint64) []pb.Entry { … }

// u.offset <= lo <= hi <= u.offset+len(u.entries)
func (u *unstable) mustCheckOutOfBounds(lo, hi uint64) { … }