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[#117] Describe well-known X-Headers

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When object can't be found using current network map, there is a chance to find
it using netmap versions from previous epochs.

By default only current netmap is used. Well-known X-Headers can be used to set
the specific netmap version and limit how deep into the past the node can go in
the search of an object.

Signed-off-by: Stanislav Bogatyrev <stanislav@nspcc.ru>
This commit is contained in:
Stanislav Bogatyrev 2021-01-11 17:11:36 +03:00 committed by Stanislav Bogatyrev
parent 7f8a4f25ba
commit fac353b9a4
2 changed files with 20 additions and 2 deletions
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2
session/service.proto
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@ -21,7 +21,7 @@ service SessionService {
message CreateRequest {
// Session creation request body
message Body {
// Dession initiating user's or node's key derived `OwnerID`.
// Session initiating user's or node's key derived `OwnerID`
neo.fs.v2.refs.OwnerID owner_id = 1;
// Session expiration `Epoch`
uint64 expiration = 2;

20
session/types.proto
View file

@ -85,7 +85,25 @@ message SessionToken {
neo.fs.v2.refs.Signature signature = 2 [json_name = "signature"];
}
// Extended headers for Request/Response.
// Extended headers for Request/Response. May contain any user-defined headers
// to be interpreted on application level.
//
// Key name must be unique valid UTF-8 string. Value can't be empty. Requests or
// Responses with duplicated header names or headers with empty values will be
// considered invalid.
//
// There are some "well-known" headers starting with `__NEOFS__` prefix that
// affect system behaviour:
//
// * __NEOFS__NETMAP_EPOCH \
// Netmap epoch to use for object placement calculation. The `value` is string
// encoded `uint64` in decimal presentation. If set to '0' or not set, the
// current epoch only will be used.
// * __NEOFS__NETMAP_LOOKUP_DEPTH \
// If object can't be found using current epoch's netmap, this header limits
// how many past epochs back the node can lookup. The `value` is string
// encoded `uint64` in decimal presentation. If set to '0' or not set, the
// current epoch only will be used.
message XHeader {
// Key of the X-Header
string key = 1 [json_name = "key"];