[#44] add tracing support refactoring

Signed-off-by: Pavel Pogodaev <p.pogodaev@yadro.com>

uploader/upload.go

@@ -18,8 +18,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/valyala/fasthttp"
-	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/trace"
 	"go.uber.org/atomic"
 	"go.uber.org/zap"
 )
@@ -31,7 +29,6 @@ const (
 
 // Uploader is an upload request handler.
 type Uploader struct {
-	appCtx            context.Context
 	log               *zap.Logger
 	pool              *pool.Pool
 	ownerID           *user.ID
@@ -54,9 +51,8 @@ func (s *Settings) SetDefaultTimestamp(val bool) {
 
 // New creates a new Uploader using specified logger, connection pool and
 // other options.
-func New(ctx context.Context, params *utils.AppParams, settings *Settings) *Uploader {
+func New(params *utils.AppParams, settings *Settings) *Uploader {
 	return &Uploader{
-		appCtx:            ctx,
 		log:               params.Logger,
 		pool:              params.Pool,
 		ownerID:           params.Owner,
@@ -77,20 +73,7 @@ func (u *Uploader) Upload(req *fasthttp.RequestCtx) {
 		drainBuf   = make([]byte, drainBufSize)
 	)
 
-	if err := tokens.StoreBearerToken(req); err != nil {
-		log.Error("could not fetch bearer token", zap.Error(err))
-		response.Error(req, "could not fetch bearer token", fasthttp.StatusBadRequest)
-		return
-	}
-
-	ctx, span := utils.StartHTTPServerSpan(u.appCtx, req, "UPLOAD Object",
-		trace.WithAttributes(
-			attribute.String("cid", scid),
-		))
-	defer func() {
-		utils.SetHTTPTraceInfo(ctx, span, req)
-		span.End()
-	}()
+	ctx := utils.GetContextFromRequest(req)
 
 	idCnr, err := utils.GetContainerID(ctx, scid, u.containerResolver)
 	if err != nil {
@@ -162,7 +145,7 @@ func (u *Uploader) Upload(req *fasthttp.RequestCtx) {
 		timestamp.SetValue(strconv.FormatInt(time.Now().Unix(), 10))
 		attributes = append(attributes, *timestamp)
 	}
-	id, bt := u.fetchOwnerAndBearerToken(req)
+	id, bt := u.fetchOwnerAndBearerToken(ctx)
 
 	obj := object.New()
 	obj.SetContainerID(*idCnr)