// TODO: In order to use RocksDB's WAL replication helpers, we need to import the C++ library so we use this shim
/**
	C++ shim implementation notes (the important bits)

	In this rocksdb_shim.cc we'll need to use:

	rocksdb::DB::Open(...)

	db->GetLatestSequenceNumber()

	db->GetUpdatesSince(seq, &iter)

	from each TransactionLogIterator entry:

	get WriteBatch and serialize via WriteBatch::Data()

	apply via rocksdb::WriteBatch wb(data); db->Write(write_options, &wb);

	Also we must configure WAL retention so the followers don’t fall off the end. RocksDB warns the iterator can become invalid if WAL is cleared aggressively; typical controls are WAL TTL / size limit.

	https://github.com/facebook/rocksdb/issues/1565
 */