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[#26] object: Remake ExtendedHeader to field set

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In previous version of the format ExtendedHeader consisted of one field
Value, defined by oneof mechanism. Such a definition format give complete
freedom when composing an object header, however, it did not allow strictly
structuring the header format at the level of type syntax. Since the object
has a well-defined structure in the system, this commit replaces the
definition through oneof with a set of fields. As a consequence, storing a
set of extended headers of the new type in the general header became
redundant, so the repeated keyword was removed.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
This commit is contained in:
Leonard Lyubich 2020-08-04 17:08:09 +03:00 committed by Stanislav Bogatyrev
parent cbd4cf63f9
commit 9666fd4bc7
2 changed files with 25 additions and 27 deletions
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6
object/types.proto
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@ -17,7 +17,6 @@ message Attribute {
}
message ExtendedHeader {
oneof Value {
// Link to other objects
Link Link = 1;
// Redirect not used yet
@ -40,7 +39,6 @@ message ExtendedHeader {
storagegroup.StorageGroup StorageGroup = 10;
// PublicKey of owner of the object. Key is used for verification and can be based on NeoID or x509 cert.
PublicKey PublicKey = 11;
}
}
message Tombstone {}
@ -109,8 +107,8 @@ message Header {
// SystemHeader describes system header
SystemHeader SystemHeader = 1;
// ExtendedHeaders describes a set of an extended headers
repeated ExtendedHeader ExtendedHeaders = 2;
// ExtendedHeader carries the additional part of the header.
ExtendedHeader ExtendedHeader = 2;
}
message Object {

2
proto-docs/object.md
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@ -403,7 +403,7 @@ Header groups the information about the NeoFS object.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| SystemHeader | [SystemHeader](#object.SystemHeader) | | SystemHeader describes system header |
| ExtendedHeaders | [ExtendedHeader](#object.ExtendedHeader) | repeated | ExtendedHeaders describes a set of an extended headers |
| ExtendedHeader | [ExtendedHeader](#object.ExtendedHeader) | | ExtendedHeader carries the additional part of the header. |
<a name="object.IntegrityHeader"></a>