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headers.go
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/
headers.go
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package v2
import (
"fmt"
"github.com/nspcc-dev/neofs-api-go/pkg"
eaclSDK "github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
"github.com/nspcc-dev/neofs-api-go/pkg/container"
objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-api-go/v2/acl"
objectV2 "github.com/nspcc-dev/neofs-api-go/v2/object"
"github.com/nspcc-dev/neofs-api-go/v2/refs"
"github.com/nspcc-dev/neofs-api-go/v2/session"
"github.com/nspcc-dev/neofs-node/pkg/core/object"
"github.com/nspcc-dev/neofs-node/pkg/services/object/acl/eacl"
)
type Option func(*cfg)
type cfg struct {
storage ObjectStorage
msg xHeaderSource
addr *refs.Address
}
type ObjectStorage interface {
Head(*objectSDK.Address) (*object.Object, error)
}
type Request interface {
GetMetaHeader() *session.RequestMetaHeader
}
type Response interface {
GetMetaHeader() *session.ResponseMetaHeader
}
type headerSource struct {
*cfg
}
func defaultCfg() *cfg {
return &cfg{
storage: new(localStorage),
}
}
func NewMessageHeaderSource(opts ...Option) eacl.TypedHeaderSource {
cfg := defaultCfg()
for i := range opts {
opts[i](cfg)
}
return &headerSource{
cfg: cfg,
}
}
func (h *headerSource) HeadersOfType(typ eaclSDK.FilterHeaderType) ([]eacl.Header, bool) {
switch typ {
default:
return nil, true
case eaclSDK.HeaderFromRequest:
return requestHeaders(h.msg), true
case eaclSDK.HeaderFromObject:
return h.objectHeaders()
}
}
func requestHeaders(msg xHeaderSource) []eacl.Header {
xHdrs := msg.GetXHeaders()
res := make([]eacl.Header, 0, len(xHdrs))
for i := range xHdrs {
res = append(res, pkg.NewXHeaderFromV2(xHdrs[i]))
}
return res
}
func (h *headerSource) objectHeaders() ([]eacl.Header, bool) {
var addr *objectSDK.Address
if h.addr != nil {
addr = objectSDK.NewAddressFromV2(h.addr)
}
switch m := h.msg.(type) {
default:
panic(fmt.Sprintf("unexpected message type %T", h.msg))
case *requestXHeaderSource:
switch req := m.req.(type) {
case *objectV2.GetRequest:
return h.localObjectHeaders(h.addr)
case *objectV2.HeadRequest:
return h.localObjectHeaders(h.addr)
case
*objectV2.GetRangeRequest,
*objectV2.GetRangeHashRequest,
*objectV2.DeleteRequest:
return addressHeaders(objectSDK.NewAddressFromV2(h.addr)), true
case *objectV2.PutRequest:
if v, ok := req.GetBody().GetObjectPart().(*objectV2.PutObjectPartInit); ok {
oV2 := new(objectV2.Object)
oV2.SetObjectID(v.GetObjectID())
oV2.SetHeader(v.GetHeader())
if addr == nil {
addr = objectSDK.NewAddress()
addr.SetContainerID(container.NewIDFromV2(v.GetHeader().GetContainerID()))
addr.SetObjectID(objectSDK.NewIDFromV2(v.GetObjectID()))
}
hs := headersFromObject(object.NewFromV2(oV2), addr)
return hs, true
}
case *objectV2.SearchRequest:
return []eacl.Header{cidHeader(
container.NewIDFromV2(
req.GetBody().GetContainerID()),
)}, true
}
case *responseXHeaderSource:
switch resp := m.resp.(type) {
default:
hs, _ := h.localObjectHeaders(h.addr)
return hs, true
case *objectV2.GetResponse:
if v, ok := resp.GetBody().GetObjectPart().(*objectV2.GetObjectPartInit); ok {
oV2 := new(objectV2.Object)
oV2.SetObjectID(v.GetObjectID())
oV2.SetHeader(v.GetHeader())
return headersFromObject(object.NewFromV2(oV2), addr), true
}
case *objectV2.HeadResponse:
oV2 := new(objectV2.Object)
var hdr *objectV2.Header
switch v := resp.GetBody().GetHeaderPart().(type) {
case *objectV2.ShortHeader:
hdr = new(objectV2.Header)
hdr.SetContainerID(h.addr.GetContainerID())
hdr.SetVersion(v.GetVersion())
hdr.SetCreationEpoch(v.GetCreationEpoch())
hdr.SetOwnerID(v.GetOwnerID())
hdr.SetObjectType(v.GetObjectType())
hdr.SetPayloadLength(v.GetPayloadLength())
case *objectV2.HeaderWithSignature:
hdr = v.GetHeader()
}
oV2.SetHeader(hdr)
return headersFromObject(object.NewFromV2(oV2), addr), true
}
}
return nil, true
}
func (h *headerSource) localObjectHeaders(addrV2 *refs.Address) ([]eacl.Header, bool) {
addr := objectSDK.NewAddressFromV2(addrV2)
obj, err := h.storage.Head(addr)
if err == nil {
return headersFromObject(obj, addr), true
}
return addressHeaders(addr), false
}
func cidHeader(cid *container.ID) eacl.Header {
return &sysObjHdr{
k: acl.FilterObjectContainerID,
v: cidValue(cid),
}
}
func oidHeader(oid *objectSDK.ID) eacl.Header {
return &sysObjHdr{
k: acl.FilterObjectID,
v: idValue(oid),
}
}
func addressHeaders(addr *objectSDK.Address) []eacl.Header {
res := make([]eacl.Header, 1, 2)
res[0] = cidHeader(addr.ContainerID())
if oid := addr.ObjectID(); oid != nil {
res = append(res, oidHeader(oid))
}
return res
}