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[#1094] eacl/v2: preallocate slice in headersFromObject

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Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-01-19 14:32:10 +03:00 committed by Alex Vanin
parent 3407fef799
commit 1bdbd6ed22
1 changed files with 6 additions and 7 deletions
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13
pkg/services/object/acl/eacl/v2/object.go
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@ -40,9 +40,12 @@ func u64Value(v uint64) string {
}
func headersFromObject(obj *object.Object, addr *objectSDK.Address) []eaclSDK.Header {
// TODO: optimize allocs
res := make([]eaclSDK.Header, 0)
var count int
for obj := obj; obj != nil; obj = obj.GetParent() {
count += 9 + len(obj.Attributes())
}
res := make([]eaclSDK.Header, 0, count)
for ; obj != nil; obj = obj.GetParent() {
res = append(res,
cidHeader(addr.ContainerID()),
@ -85,13 +88,9 @@ func headersFromObject(obj *object.Object, addr *objectSDK.Address) []eaclSDK.He
)
attrs := obj.Attributes()
hs := make([]eaclSDK.Header, 0, len(attrs))
for i := range attrs {
hs = append(hs, attrs[i])
res = append(res, attrs[i])
}
res = append(res, hs...)
}
return res