package v2 import ( "context" "errors" "fmt" "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/acl" objectV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object" refsV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs" "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session" cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id" eaclSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl" objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object" oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id" "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user" ) type Option func(*cfg) type cfg struct { storage ObjectStorage msg XHeaderSource cnr cid.ID obj *oid.ID } type ObjectStorage interface { Head(context.Context, oid.Address) (*objectSDK.Object, error) } type Request interface { GetMetaHeader() *session.RequestMetaHeader } type Response interface { GetMetaHeader() *session.ResponseMetaHeader } type headerSource struct { requestHeaders []eaclSDK.Header objectHeaders []eaclSDK.Header incompleteObjectHeaders bool } func NewMessageHeaderSource(os ObjectStorage, xhs XHeaderSource, cnrID cid.ID, opts ...Option) (eaclSDK.TypedHeaderSource, error) { cfg := &cfg{ storage: os, cnr: cnrID, msg: xhs, } for i := range opts { opts[i](cfg) } if cfg.msg == nil { return nil, errors.New("message is not provided") } var res headerSource err := cfg.readObjectHeaders(&res) if err != nil { return nil, err } res.requestHeaders = cfg.msg.GetXHeaders() return res, nil } func (h headerSource) HeadersOfType(typ eaclSDK.FilterHeaderType) ([]eaclSDK.Header, bool) { switch typ { default: return nil, true case eaclSDK.HeaderFromRequest: return h.requestHeaders, true case eaclSDK.HeaderFromObject: return h.objectHeaders, !h.incompleteObjectHeaders } } type xHeader session.XHeader func (x xHeader) Key() string { return (*session.XHeader)(&x).GetKey() } func (x xHeader) Value() string { return (*session.XHeader)(&x).GetValue() } var errMissingOID = errors.New("object ID is missing") func (h *cfg) readObjectHeaders(dst *headerSource) error { switch m := h.msg.(type) { default: panic(fmt.Sprintf("unexpected message type %T", h.msg)) case requestXHeaderSource: return h.readObjectHeadersFromRequestXHeaderSource(m, dst) case responseXHeaderSource: return h.readObjectHeadersResponseXHeaderSource(m, dst) } } func (h *cfg) readObjectHeadersFromRequestXHeaderSource(m requestXHeaderSource, dst *headerSource) error { switch req := m.req.(type) { case *objectV2.GetRequest, *objectV2.HeadRequest: if h.obj == nil { return errMissingOID } objHeaders, completed := h.localObjectHeaders(h.cnr, h.obj) dst.objectHeaders = objHeaders dst.incompleteObjectHeaders = !completed case *objectV2.GetRangeRequest, *objectV2.GetRangeHashRequest, *objectV2.DeleteRequest: if h.obj == nil { return errMissingOID } dst.objectHeaders = addressHeaders(h.cnr, h.obj) case *objectV2.PutRequest: if v, ok := req.GetBody().GetObjectPart().(*objectV2.PutObjectPartInit); ok { oV2 := new(objectV2.Object) oV2.SetObjectID(v.GetObjectID()) oV2.SetHeader(v.GetHeader()) dst.objectHeaders = headersFromObject(objectSDK.NewFromV2(oV2), h.cnr, h.obj) } case *objectV2.SearchRequest: cnrV2 := req.GetBody().GetContainerID() var cnr cid.ID if cnrV2 != nil { if err := cnr.ReadFromV2(*cnrV2); err != nil { return fmt.Errorf("can't parse container ID: %w", err) } } dst.objectHeaders = []eaclSDK.Header{cidHeader(cnr)} } return nil } func (h *cfg) readObjectHeadersResponseXHeaderSource(m responseXHeaderSource, dst *headerSource) error { switch resp := m.resp.(type) { default: objectHeaders, completed := h.localObjectHeaders(h.cnr, h.obj) dst.objectHeaders = objectHeaders dst.incompleteObjectHeaders = !completed case *objectV2.GetResponse: if v, ok := resp.GetBody().GetObjectPart().(*objectV2.GetObjectPartInit); ok { oV2 := new(objectV2.Object) oV2.SetObjectID(v.GetObjectID()) oV2.SetHeader(v.GetHeader()) dst.objectHeaders = headersFromObject(objectSDK.NewFromV2(oV2), h.cnr, h.obj) } case *objectV2.HeadResponse: oV2 := new(objectV2.Object) var hdr *objectV2.Header switch v := resp.GetBody().GetHeaderPart().(type) { case *objectV2.ShortHeader: hdr = new(objectV2.Header) var idV2 refsV2.ContainerID h.cnr.WriteToV2(&idV2) hdr.SetContainerID(&idV2) 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) dst.objectHeaders = headersFromObject(objectSDK.NewFromV2(oV2), h.cnr, h.obj) } return nil } func (h *cfg) localObjectHeaders(cnr cid.ID, idObj *oid.ID) ([]eaclSDK.Header, bool) { if idObj != nil { var addr oid.Address addr.SetContainer(cnr) addr.SetObject(*idObj) obj, err := h.storage.Head(context.TODO(), addr) if err == nil { return headersFromObject(obj, cnr, idObj), true } } return addressHeaders(cnr, idObj), false } func cidHeader(idCnr cid.ID) sysObjHdr { return sysObjHdr{ k: acl.FilterObjectContainerID, v: idCnr.EncodeToString(), } } func oidHeader(obj oid.ID) sysObjHdr { return sysObjHdr{ k: acl.FilterObjectID, v: obj.EncodeToString(), } } func ownerIDHeader(ownerID user.ID) sysObjHdr { return sysObjHdr{ k: acl.FilterObjectOwnerID, v: ownerID.EncodeToString(), } } func addressHeaders(cnr cid.ID, oid *oid.ID) []eaclSDK.Header { hh := make([]eaclSDK.Header, 0, 2) hh = append(hh, cidHeader(cnr)) if oid != nil { hh = append(hh, oidHeader(*oid)) } return hh }