package headsvc import ( "context" "github.com/nspcc-dev/neofs-api-go/pkg/client" objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object" "github.com/nspcc-dev/neofs-node/pkg/core/object" "github.com/nspcc-dev/neofs-node/pkg/network" "github.com/nspcc-dev/neofs-node/pkg/network/cache" "github.com/nspcc-dev/neofs-node/pkg/services/object/util" "github.com/pkg/errors" ) // RemoteHeader represents utility for getting // the object header from a remote host. type RemoteHeader struct { keyStorage *util.KeyStorage clientCache *cache.ClientCache clientOpts []client.Option } // RemoteHeadPrm groups remote header operation parameters. type RemoteHeadPrm struct { commonHeadPrm *Prm node *network.Address } var ErrNotFound = errors.New("object header not found") // NewRemoteHeader creates, initializes and returns new RemoteHeader instance. func NewRemoteHeader(keyStorage *util.KeyStorage, cache *cache.ClientCache, opts ...client.Option) *RemoteHeader { return &RemoteHeader{ keyStorage: keyStorage, clientCache: cache, clientOpts: opts, } } // WithNodeAddress sets network address of the remote node. func (p *RemoteHeadPrm) WithNodeAddress(v *network.Address) *RemoteHeadPrm { if p != nil { p.node = v } return p } // WithObjectAddress sets object address. func (p *RemoteHeadPrm) WithObjectAddress(v *objectSDK.Address) *RemoteHeadPrm { if p != nil { p.commonHeadPrm = new(Prm).WithAddress(v) } return p } // Head requests object header from the remote node. func (h *RemoteHeader) Head(ctx context.Context, prm *RemoteHeadPrm) (*object.Object, error) { key, err := h.keyStorage.GetKey(prm.commonHeadPrm.common.SessionToken()) if err != nil { return nil, errors.Wrapf(err, "(%T) could not receive private key", h) } addr, err := prm.node.IPAddrString() if err != nil { return nil, err } c, err := h.clientCache.Get(key, addr, h.clientOpts...) if err != nil { return nil, errors.Wrapf(err, "(%T) could not create SDK client %s", h, addr) } p := new(client.ObjectHeaderParams). WithAddress(prm.commonHeadPrm.addr). WithRawFlag(prm.commonHeadPrm.raw) if prm.commonHeadPrm.short { p = p.WithMainFields() } hdr, err := c.GetObjectHeader(ctx, p, client.WithTTL(1), // FIXME: use constant client.WithSession(prm.commonHeadPrm.common.SessionToken()), client.WithBearer(prm.commonHeadPrm.common.BearerToken()), ) if err != nil { return nil, errors.Wrapf(err, "(%T) could not head object in %s", h, addr) } return object.NewFromSDK(hdr), nil }