package putsvc import ( "context" "errors" "fmt" "github.com/nspcc-dev/neofs-node/pkg/core/client" "github.com/nspcc-dev/neofs-node/pkg/core/netmap" "github.com/nspcc-dev/neofs-node/pkg/network" "github.com/nspcc-dev/neofs-node/pkg/services/object/util" "github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement" "github.com/nspcc-dev/neofs-node/pkg/services/object_manager/transformer" ) type Streamer struct { *cfg ctx context.Context target transformer.ObjectTarget relay func(network.AddressGroup, client.Client) error maxPayloadSz uint64 // network config } var errNotInit = errors.New("stream not initialized") var errInitRecall = errors.New("init recall") func (p *Streamer) Init(prm *PutInitPrm) error { // initialize destination target if err := p.initTarget(prm); err != nil { return fmt.Errorf("(%T) could not initialize object target: %w", p, err) } if err := p.target.WriteHeader(prm.hdr); err != nil { return fmt.Errorf("(%T) could not write header to target: %w", p, err) } return nil } // MaxObjectSize returns maximum payload size for the streaming session. // // Must be called after the successful Init. func (p *Streamer) MaxObjectSize() uint64 { return p.maxPayloadSz } func (p *Streamer) initTarget(prm *PutInitPrm) error { // prevent re-calling if p.target != nil { return errInitRecall } // prepare needed put parameters if err := p.preparePrm(prm); err != nil { return fmt.Errorf("(%T) could not prepare put parameters: %w", p, err) } p.maxPayloadSz = p.maxSizeSrc.MaxObjectSize() if p.maxPayloadSz == 0 { return fmt.Errorf("(%T) could not obtain max object size parameter", p) } if prm.hdr.Signature() != nil { p.relay = prm.relay // prepare untrusted-Put object target p.target = &validatingTarget{ nextTarget: p.newCommonTarget(prm), fmt: p.fmtValidator, maxPayloadSz: p.maxPayloadSz, } return nil } sToken := prm.common.SessionToken() // prepare trusted-Put object target // get private token from local storage sessionKey, err := p.keyStorage.GetKey(sToken) if err != nil { return fmt.Errorf("(%T) could not receive session key: %w", p, err) } p.target = transformer.NewPayloadSizeLimiter( p.maxPayloadSz, func() transformer.ObjectTarget { return transformer.NewFormatTarget(&transformer.FormatterParams{ Key: sessionKey, NextTarget: p.newCommonTarget(prm), SessionToken: sToken, NetworkState: p.networkState, }) }, ) return nil } func (p *Streamer) preparePrm(prm *PutInitPrm) error { var err error // get latest network map nm, err := netmap.GetLatestNetworkMap(p.netMapSrc) if err != nil { return fmt.Errorf("(%T) could not get latest network map: %w", p, err) } // get container to store the object cnr, err := p.cnrSrc.Get(prm.hdr.ContainerID()) if err != nil { return fmt.Errorf("(%T) could not get container by ID: %w", p, err) } // add common options prm.traverseOpts = append(prm.traverseOpts, // set processing container placement.ForContainer(cnr), // set identifier of the processing object placement.ForObject(prm.hdr.ID()), ) // create placement builder from network map builder := placement.NewNetworkMapBuilder(nm) if prm.common.LocalOnly() { // restrict success count to 1 stored copy (to local storage) prm.traverseOpts = append(prm.traverseOpts, placement.SuccessAfter(1)) // use local-only placement builder builder = util.NewLocalPlacement(builder, p.netmapKeys) } // set placement builder prm.traverseOpts = append(prm.traverseOpts, placement.UseBuilder(builder)) return nil } func (p *Streamer) newCommonTarget(prm *PutInitPrm) transformer.ObjectTarget { var relay func(nodeDesc) error if p.relay != nil { relay = func(node nodeDesc) error { addr := node.info.Addresses() var info client.NodeInfo info.SetAddressGroup(addr) c, err := p.clientConstructor.Get(info) if err != nil { return fmt.Errorf("could not create SDK client %s: %w", addr, err) } return p.relay(addr, c) } } return &distributedTarget{ traverseOpts: prm.traverseOpts, remotePool: p.remotePool, localPool: p.localPool, nodeTargetInitializer: func(node nodeDesc) transformer.ObjectTarget { if node.local { return &localTarget{ storage: p.localStore, } } return &remoteTarget{ ctx: p.ctx, keyStorage: p.keyStorage, commonPrm: prm.common, addr: node.info.Addresses(), clientConstructor: p.clientConstructor, } }, relay: relay, fmt: p.fmtValidator, log: p.log, isLocalKey: p.netmapKeys.IsLocalKey, } } func (p *Streamer) SendChunk(prm *PutChunkPrm) error { if p.target == nil { return errNotInit } if _, err := p.target.Write(prm.chunk); err != nil { return fmt.Errorf("(%T) could not write payload chunk to target: %w", p, err) } return nil } func (p *Streamer) Close() (*PutResponse, error) { if p.target == nil { return nil, errNotInit } ids, err := p.target.Close() if err != nil { return nil, fmt.Errorf("(%T) could not close object target: %w", p, err) } id := ids.ParentID() if id == nil { id = ids.SelfID() } return &PutResponse{ id: id, }, nil }