frostfs-api/proto-docs/tombstone.md

Protocol Documentation

Table of Contents

• tombstone/types.proto

  • Messages
    • Tombstone

• Scalar Value Types

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tombstone/types.proto

Message Tombstone

Tombstone keeps record of deleted objects for few epochs until they are purged from the NeoFS network.

Field	Type	Label	Description
expiration_epoch	uint64		Last NeoFS epoch number of the tombstone lifetime. It's set by tombstone creator depending on current NeoFS network settings. Tombstone object must have the same expiration epoch value in __NEOFS__EXPIRATION_EPOCH attribute. Otherwise tombstone will be rejected by storage node.
split_id	bytes		16 byte UUID used to identify the split object hierarchy parts. Must be unique inside container. All objects participating in the split must have the same split_id value.
members	neo.fs.v2.refs.ObjectID	repeated	List of objects to be deleted.

Scalar Value Types

.proto Type	Notes	C++ Type	Java Type	Python Type
double		double	double	float
float		float	float	float
int32	Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead.	int32	int	int
int64	Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead.	int64	long	int/long
uint32	Uses variable-length encoding.	uint32	int	int/long
uint64	Uses variable-length encoding.	uint64	long	int/long
sint32	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s.	int32	int	int
sint64	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s.	int64	long	int/long
fixed32	Always four bytes. More efficient than uint32 if values are often greater than 2^28.	uint32	int	int
fixed64	Always eight bytes. More efficient than uint64 if values are often greater than 2^56.	uint64	long	int/long
sfixed32	Always four bytes.	int32	int	int
sfixed64	Always eight bytes.	int64	long	int/long
bool		bool	boolean	boolean
string	A string must always contain UTF-8 encoded or 7-bit ASCII text.	string	String	str/unicode
bytes	May contain any arbitrary sequence of bytes.	string	ByteString	str