Create creates a WAL ready for appending records.

Exist returns true if there are any files in a given directory.

MinimalEtcdVersion returns minimal etcd able to interpret entries from WAL log, determined by looking at entries since the last snapshot and returning the highest etcd version annotation from used messages, fields, enums and their values.

Open opens the WAL at the given snap.

OpenForRead only opens the wal files for read.

ReadWALVersion reads remaining entries from opened WAL and returns struct that implements schema.WAL interface.

Repair tries to repair ErrUnexpectedEOF in the last wal file by truncating.

ValidSnapshotEntries returns all the valid snapshot entries in the wal logs in the given directory.

Verify reads through the given WAL and verifies that it is not corrupted.

VisitFileDescriptor calls visitor on each field and enum value with etcd version read from proto definition.

64MB.

WAL is a logical representation of the stable storage.