package uploader import ( "context" "encoding/json" "fmt" "io" "strconv" "sync/atomic" "time" "github.com/nspcc-dev/neofs-http-gw/resolver" "github.com/nspcc-dev/neofs-http-gw/response" "github.com/nspcc-dev/neofs-http-gw/tokens" "github.com/nspcc-dev/neofs-http-gw/utils" "github.com/nspcc-dev/neofs-sdk-go/bearer" "github.com/nspcc-dev/neofs-sdk-go/object" oid "github.com/nspcc-dev/neofs-sdk-go/object/id" "github.com/nspcc-dev/neofs-sdk-go/pool" "github.com/nspcc-dev/neofs-sdk-go/user" "github.com/valyala/fasthttp" "go.uber.org/zap" ) const ( jsonHeader = "application/json; charset=UTF-8" drainBufSize = 4096 ) // Uploader is an upload request handler. type Uploader struct { appCtx context.Context log *zap.Logger pool *pool.Pool ownerID *user.ID settings *Settings containerResolver *resolver.ContainerResolver } type epochDurations struct { currentEpoch uint64 msPerBlock int64 blockPerEpoch uint64 } type Settings struct { defaultTimestamp atomic.Bool } func (s *Settings) DefaultTimestamp() bool { return s.defaultTimestamp.Load() } func (s *Settings) SetDefaultTimestamp(val bool) { s.defaultTimestamp.Store(val) } // New creates a new Uploader using specified logger, connection pool and // other options. func New(ctx context.Context, params *utils.AppParams, settings *Settings) *Uploader { return &Uploader{ appCtx: ctx, log: params.Logger, pool: params.Pool, ownerID: params.Owner, settings: settings, containerResolver: params.Resolver, } } // Upload handles multipart upload request. func (u *Uploader) Upload(c *fasthttp.RequestCtx) { var ( file MultipartFile idObj oid.ID addr oid.Address scid, _ = c.UserValue("cid").(string) log = u.log.With(zap.String("cid", scid)) bodyStream = c.RequestBodyStream() drainBuf = make([]byte, drainBufSize) ) if err := tokens.StoreBearerToken(c); err != nil { log.Error("could not fetch bearer token", zap.Error(err)) response.Error(c, "could not fetch bearer token", fasthttp.StatusBadRequest) return } idCnr, err := utils.GetContainerID(u.appCtx, scid, u.containerResolver) if err != nil { log.Error("wrong container id", zap.Error(err)) response.Error(c, "wrong container id", fasthttp.StatusBadRequest) return } defer func() { // If the temporary reader can be closed - let's close it. if file == nil { return } err := file.Close() log.Debug( "close temporary multipart/form file", zap.Stringer("address", addr), zap.String("filename", file.FileName()), zap.Error(err), ) }() boundary := string(c.Request.Header.MultipartFormBoundary()) if file, err = fetchMultipartFile(u.log, bodyStream, boundary); err != nil { log.Error("could not receive multipart/form", zap.Error(err)) response.Error(c, "could not receive multipart/form: "+err.Error(), fasthttp.StatusBadRequest) return } filtered := filterHeaders(u.log, &c.Request.Header) if needParseExpiration(filtered) { epochDuration, err := getEpochDurations(c, u.pool) if err != nil { log.Error("could not get epoch durations from network info", zap.Error(err)) response.Error(c, "could not get epoch durations from network info: "+err.Error(), fasthttp.StatusBadRequest) return } if err = prepareExpirationHeader(filtered, epochDuration); err != nil { log.Error("could not parse expiration header", zap.Error(err)) response.Error(c, "could not parse expiration header: "+err.Error(), fasthttp.StatusBadRequest) return } } attributes := make([]object.Attribute, 0, len(filtered)) // prepares attributes from filtered headers for key, val := range filtered { attribute := object.NewAttribute() attribute.SetKey(key) attribute.SetValue(val) attributes = append(attributes, *attribute) } // sets FileName attribute if it wasn't set from header if _, ok := filtered[object.AttributeFileName]; !ok { filename := object.NewAttribute() filename.SetKey(object.AttributeFileName) filename.SetValue(file.FileName()) attributes = append(attributes, *filename) } // sets Timestamp attribute if it wasn't set from header and enabled by settings if _, ok := filtered[object.AttributeTimestamp]; !ok && u.settings.DefaultTimestamp() { timestamp := object.NewAttribute() timestamp.SetKey(object.AttributeTimestamp) timestamp.SetValue(strconv.FormatInt(time.Now().Unix(), 10)) attributes = append(attributes, *timestamp) } id, bt := u.fetchOwnerAndBearerToken(c) obj := object.New() obj.SetContainerID(*idCnr) obj.SetOwnerID(id) obj.SetAttributes(attributes...) var prm pool.PrmObjectPut prm.SetHeader(*obj) prm.SetPayload(file) if bt != nil { prm.UseBearer(*bt) } if idObj, err = u.pool.PutObject(u.appCtx, prm); err != nil { log.Error("could not store file in neofs", zap.Error(err)) response.Error(c, "could not store file in neofs: "+err.Error(), fasthttp.StatusBadRequest) return } addr.SetObject(idObj) addr.SetContainer(*idCnr) // Try to return the response, otherwise, if something went wrong, throw an error. if err = newPutResponse(addr).encode(c); err != nil { log.Error("could not encode response", zap.Error(err)) response.Error(c, "could not encode response", fasthttp.StatusBadRequest) return } // Multipart is multipart and thus can contain more than one part which // we ignore at the moment. Also, when dealing with chunked encoding // the last zero-length chunk might be left unread (because multipart // reader only cares about its boundary and doesn't look further) and // it will be (erroneously) interpreted as the start of the next // pipelined header. Thus we need to drain the body buffer. for { _, err = bodyStream.Read(drainBuf) if err == io.EOF || err == io.ErrUnexpectedEOF { break } } // Report status code and content type. c.Response.SetStatusCode(fasthttp.StatusOK) c.Response.Header.SetContentType(jsonHeader) } func (u *Uploader) fetchOwnerAndBearerToken(ctx context.Context) (*user.ID, *bearer.Token) { if tkn, err := tokens.LoadBearerToken(ctx); err == nil && tkn != nil { issuer := bearer.ResolveIssuer(*tkn) return &issuer, tkn } return u.ownerID, nil } type putResponse struct { ObjectID string `json:"object_id"` ContainerID string `json:"container_id"` } func newPutResponse(addr oid.Address) *putResponse { return &putResponse{ ObjectID: addr.Object().EncodeToString(), ContainerID: addr.Container().EncodeToString(), } } func (pr *putResponse) encode(w io.Writer) error { enc := json.NewEncoder(w) enc.SetIndent("", "\t") return enc.Encode(pr) } func getEpochDurations(ctx context.Context, p *pool.Pool) (*epochDurations, error) { networkInfo, err := p.NetworkInfo(ctx) if err != nil { return nil, err } res := &epochDurations{ currentEpoch: networkInfo.CurrentEpoch(), msPerBlock: networkInfo.MsPerBlock(), blockPerEpoch: networkInfo.EpochDuration(), } if res.blockPerEpoch == 0 { return nil, fmt.Errorf("EpochDuration is empty") } return res, nil } func needParseExpiration(headers map[string]string) bool { _, ok1 := headers[utils.ExpirationDurationAttr] _, ok2 := headers[utils.ExpirationRFC3339Attr] _, ok3 := headers[utils.ExpirationTimestampAttr] return ok1 || ok2 || ok3 }