frostfs-api/proto-docs/refs.md
Leonard Lyubich 96924b04dc [#26] refs: Define ObjectID message
This commit defines ObjectID message in refs package. In the future, this
structure can be ported into messages in place of the object identifier
field to maintain format uniformity. Also, storing the identifier in a
dedicated message will allow, if necessary, to expand it with additional
information without losing backward compatibility within one version of the
API.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2020-08-06 21:59:42 +03:00

2.9 KiB

Protocol Documentation

Table of Contents

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refs/types.proto

Message Address

Address of object (container id + object id)

Field Type Label Description
ObjectID bytes ObjectID is an object identifier, valid UUIDv4 represented in bytes
CID bytes CID is container identifier

Message ObjectID

ObjectID groups information about the NeoFS object identifier.

Field Type Label Description
Value bytes Value carries the object identifier in a binary format.

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