sql

type DB interface {
	Exec(ctx context.Context, sql string, arguments ...interface{}) (pgconn.CommandTag, error)
	Query(ctx context.Context, sql string, args ...interface{}) (pgx.Rows, error)
	QueryRow(ctx context.Context, sql string, args ...interface{}) pgx.Row
}

type KV struct {
	MTId uint64
	K    []byte
	V    merkletree.Node
}

type NodeItem struct {
	MTId uint64 `db:"mt_id"`
	Key  []byte `db:"key"`
	// Type is the type of node in the tree.
	Type byte `db:"type"`
	// ChildL is the left child of a middle node.
	ChildL []byte `db:"child_l"`
	// ChildR is the right child of a middle node.
	ChildR []byte `db:"child_r"`
	// Entry is the data stored in a leaf node.
	Entry     []byte  `db:"entry"`
	CreatedAt *uint64 `db:"created_at"`
	DeletedAt *uint64 `db:"deleted_at"`
}

type RootItem struct {
	MTId      uint64  `db:"mt_id"`
	Key       []byte  `db:"key"`
	CreatedAt *uint64 `db:"created_at"`
	DeletedAt *uint64 `db:"deleted_at"`
}

type Storage struct {
	// contains filtered or unexported fields
}