cmd/http-gw/app.go

@@ -97,7 +97,7 @@ type (
 
 		mu                     sync.RWMutex
 		defaultTimestamp       bool
-		zipCompression         bool
+		archiveCompression     bool
 		clientCut              bool
 		returnIndexPage        bool
 		indexPageTemplate      string
@@ -178,7 +178,7 @@ func (a *app) initAppSettings() {
 
 func (s *appSettings) update(v *viper.Viper, l *zap.Logger) {
 	defaultTimestamp := v.GetBool(cfgUploaderHeaderEnableDefaultTimestamp)
-	zipCompression := v.GetBool(cfgZipCompression)
+	archiveCompression := fetchArchiveCompression(v)
 	returnIndexPage := v.GetBool(cfgIndexPageEnabled)
 	clientCut := v.GetBool(cfgClientCut)
 	bufferMaxSizeForPut := v.GetUint64(cfgBufferMaxSizeForPut)
@@ -197,7 +197,7 @@ func (s *appSettings) update(v *viper.Viper, l *zap.Logger) {
 	defer s.mu.Unlock()
 
 	s.defaultTimestamp = defaultTimestamp
-	s.zipCompression = zipCompression
+	s.archiveCompression = archiveCompression
 	s.returnIndexPage = returnIndexPage
 	s.clientCut = clientCut
 	s.bufferMaxSizeForPut = bufferMaxSizeForPut
@@ -236,10 +236,10 @@ func (s *appSettings) DefaultTimestamp() bool {
 	return s.defaultTimestamp
 }
 
-func (s *appSettings) ZipCompression() bool {
+func (s *appSettings) ArchiveCompression() bool {
 	s.mu.RLock()
 	defer s.mu.RUnlock()
-	return s.zipCompression
+	return s.archiveCompression
 }
 
 func (s *appSettings) IndexPageEnabled() bool {
@@ -656,8 +656,10 @@ func (a *app) configureRouter(h *handler.Handler) {
 	r.HEAD("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.addMiddlewares(h.HeadByAttribute))
 	r.OPTIONS("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.addPreflight())
 	a.log.Info(logs.AddedPathGetByAttributeCidAttrKeyAttrVal)
-	r.GET("/zip/{cid}/{prefix:*}", a.addMiddlewares(h.DownloadZipped))
+	r.GET("/zip/{cid}/{prefix:*}", a.addMiddlewares(h.DownloadZip))
 	r.OPTIONS("/zip/{cid}/{prefix:*}", a.addPreflight())
+	r.GET("/tar/{cid}/{prefix:*}", a.addMiddlewares(h.DownloadTar))
+	r.OPTIONS("/tar/{cid}/{prefix:*}", a.addPreflight())
 	a.log.Info(logs.AddedPathZipCidPrefix)
 
 	a.webServer.Handler = r.Handler

cmd/http-gw/settings.go

@@ -128,8 +128,13 @@ const (
 	cfgResolveOrder = "resolve_order"
 
 	// Zip compression.
+	//
+	// Deprecated: Use cfgArchiveCompression instead.
 	cfgZipCompression = "zip.compression"
 
+	// Archive compression.
+	cfgArchiveCompression = "archive.compression"
+
 	// Runtime.
 	cfgSoftMemoryLimit = "runtime.soft_memory_limit"
 
@@ -255,9 +260,6 @@ func settings() *viper.Viper {
 	// upload header
 	v.SetDefault(cfgUploaderHeaderEnableDefaultTimestamp, false)
 
-	// zip:
-	v.SetDefault(cfgZipCompression, false)
-
 	// metrics
 	v.SetDefault(cfgPprofAddress, "localhost:8083")
 	v.SetDefault(cfgPrometheusAddress, "localhost:8084")
@@ -844,3 +846,10 @@ func fetchTracingAttributes(v *viper.Viper) (map[string]string, error) {
 
 	return attributes, nil
 }
+
+func fetchArchiveCompression(v *viper.Viper) bool {
+	if v.IsSet(cfgZipCompression) {
+		return v.GetBool(cfgZipCompression)
+	}
+	return v.GetBool(cfgArchiveCompression)
+}

config/config.env

@@ -97,9 +97,13 @@ HTTP_GW_REBALANCE_TIMER=30s
 # The number of errors on connection after which node is considered as unhealthy
 HTTP_GW_POOL_ERROR_THRESHOLD=100
 
-# Enable zip compression to download files by common prefix.
+# Enable archive compression to download files by common prefix.
+# DEPRECATED: Use HTTP_GW_ARCHIVE_COMPRESSION instead.
 HTTP_GW_ZIP_COMPRESSION=false
 
+# Enable archive compression to download files by common prefix.
+HTTP_GW_ARCHIVE_COMPRESSION=false
+
 HTTP_GW_TRACING_ENABLED=true
 HTTP_GW_TRACING_ENDPOINT="localhost:4317"
 HTTP_GW_TRACING_EXPORTER="otlp_grpc"

config/config.yaml

@@ -116,13 +116,19 @@ pool_error_threshold: 100 # The number of errors on connection after which node
 # Number of workers in handler's worker pool
 worker_pool_size: 1000
 
-# Enable index page to see objects list for specified container and prefix
+# Enables index page to see objects list for specified container and prefix
 index_page:
   enabled: false
   template_path: internal/handler/templates/index.gotmpl
 
+# Deprecated: Use archive.compression instead
 zip:
-  compression: false # Enable zip compression to download files by common prefix.
+  # Enables zip compression to download files by common prefix.
+  compression: false
+
+archive:
+  # Enables archive compression to download files by common prefix.
+  compression: false
 
 runtime:
   soft_memory_limit: 1gb

docs/gate-configuration.md

@@ -218,9 +218,10 @@ upload_header:
 |-------------------------|--------|---------------|---------------|-------------------------------------------------------------|
 | `use_default_timestamp` | `bool` | yes           | `false`       | Create timestamp for object if it isn't provided by header. |
 
-
 # `zip` section
 
+> **_DEPRECATED:_**  Use archive section instead
+
 ```yaml
 zip:
   compression: false
@@ -230,6 +231,17 @@ zip:
 |---------------|--------|---------------|---------------|--------------------------------------------------------------|
 | `compression` | `bool` | yes           | `false`       | Enable zip compression when download files by common prefix. |
 
+# `archive` section
+
+```yaml
+archive:
+  compression: false
+```
+
+| Parameter     | Type   | SIGHUP reload | Default value | Description                                                      |
+|---------------|--------|---------------|---------------|------------------------------------------------------------------|
+| `compression` | `bool` | yes           | `false`       | Enable archive compression when download files by common prefix. |
+
 
 # `pprof` section
 

internal/handler/download.go

@@ -1,20 +1,21 @@
 package handler
 
 import (
+	"archive/tar"
 	"archive/zip"
 	"bufio"
+	"compress/gzip"
 	"context"
 	"errors"
 	"fmt"
 	"io"
-	"net/http"
 	"net/url"
 	"time"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/layer"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@@ -46,7 +47,7 @@ func (h *Handler) DownloadByAddressOrBucketName(c *fasthttp.RequestCtx) {
 		return
 	}
 
-	req := h.newRequest(c, log)
+	req := newRequest(c, log)
 
 	var objID oid.ID
 	if checkS3Err == nil && shouldDownload(oidParam, downloadParam) {
@@ -62,13 +63,6 @@ func shouldDownload(oidParam string, downloadParam bool) bool {
 	return !isDir(oidParam) || downloadParam
 }
 
-func (h *Handler) newRequest(ctx *fasthttp.RequestCtx, log *zap.Logger) request {
-	return request{
-		RequestCtx: ctx,
-		log:        log,
-	}
-}
-
 // DownloadByAttribute handles attribute-based download requests.
 func (h *Handler) DownloadByAttribute(c *fasthttp.RequestCtx) {
 	h.byAttribute(c, h.receiveFile)
@@ -90,13 +84,61 @@ func (h *Handler) search(ctx context.Context, cnrID cid.ID, key, val string, op
 	return h.frostfs.SearchObjects(ctx, prm)
 }
 
-func (h *Handler) addObjectToZip(zw *zip.Writer, obj *object.Object) (io.Writer, error) {
+// DownloadZip handles zip by prefix requests.
+func (h *Handler) DownloadZip(c *fasthttp.RequestCtx) {
+	scid, _ := c.UserValue("cid").(string)
+
+	ctx := utils.GetContextFromRequest(c)
+	log := utils.GetReqLogOrDefault(ctx, h.log)
+	bktInfo, err := h.getBucketInfo(ctx, scid, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+	resSearch, err := h.searchObjectsByPrefix(c, log, bktInfo.CID)
+	if err != nil {
+		return
+	}
+
+	c.Response.Header.Set(fasthttp.HeaderContentType, "application/zip")
+	c.Response.Header.Set(fasthttp.HeaderContentDisposition, "attachment; filename=\"archive.zip\"")
+
+	c.SetBodyStreamWriter(h.getZipResponseWriter(ctx, log, resSearch, bktInfo))
+}
+
+func (h *Handler) getZipResponseWriter(ctx context.Context, log *zap.Logger, resSearch ResObjectSearch, bktInfo *data.BucketInfo) func(w *bufio.Writer) {
+	return func(w *bufio.Writer) {
+		defer resSearch.Close()
+
+		buf := make([]byte, 3<<20)
+		zipWriter := zip.NewWriter(w)
+		var objectsWritten int
+
+		errIter := resSearch.Iterate(h.putObjectToArchive(ctx, log, bktInfo.CID, buf,
+			func(obj *object.Object) (io.Writer, error) {
+				objectsWritten++
+				return h.createZipFile(zipWriter, obj)
+			}),
+		)
+		if errIter != nil {
+			log.Error(logs.IteratingOverSelectedObjectsFailed, zap.Error(errIter))
+			return
+		} else if objectsWritten == 0 {
+			log.Warn(logs.ObjectsNotFound)
+		}
+		if err := zipWriter.Close(); err != nil {
+			log.Error(logs.CloseZipWriter, zap.Error(err))
+		}
+	}
+}
+
+func (h *Handler) createZipFile(zw *zip.Writer, obj *object.Object) (io.Writer, error) {
 	method := zip.Store
 	if h.config.ZipCompression() {
 		method = zip.Deflate
 	}
 
-	filePath := getZipFilePath(obj)
+	filePath := getFilePath(obj)
 	if len(filePath) == 0 || filePath[len(filePath)-1] == '/' {
 		return nil, fmt.Errorf("invalid filepath '%s'", filePath)
 	}
@@ -108,99 +150,139 @@ func (h *Handler) addObjectToZip(zw *zip.Writer, obj *object.Object) (io.Writer,
 	})
 }
 
-// DownloadZipped handles zip by prefix requests.
+// DownloadTar forms tar.gz from objects by prefix.
-func (h *Handler) DownloadZipped(c *fasthttp.RequestCtx) {
+func (h *Handler) DownloadTar(c *fasthttp.RequestCtx) {
 	scid, _ := c.UserValue("cid").(string)
-	prefix, _ := c.UserValue("prefix").(string)
 
 	ctx := utils.GetContextFromRequest(c)
 	log := utils.GetReqLogOrDefault(ctx, h.log)
-
-	prefix, err := url.QueryUnescape(prefix)
-	if err != nil {
-		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), zap.String("prefix", prefix), zap.Error(err))
-		ResponseError(c, "could not unescape prefix: "+err.Error(), fasthttp.StatusBadRequest)
-		return
-	}
-
-	log = log.With(zap.String("cid", scid), zap.String("prefix", prefix))
-
 	bktInfo, err := h.getBucketInfo(ctx, scid, log)
 	if err != nil {
 		logAndSendBucketError(c, log, err)
 		return
 	}
-
+	resSearch, err := h.searchObjectsByPrefix(c, log, bktInfo.CID)
-	resSearch, err := h.search(ctx, bktInfo.CID, object.AttributeFilePath, prefix, object.MatchCommonPrefix)
 	if err != nil {
-		log.Error(logs.CouldNotSearchForObjects, zap.Error(err))
-		ResponseError(c, "could not search for objects: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
-	c.Response.Header.Set(fasthttp.HeaderContentType, "application/zip")
+	c.Response.Header.Set(fasthttp.HeaderContentType, "application/gzip")
-	c.Response.Header.Set(fasthttp.HeaderContentDisposition, "attachment; filename=\"archive.zip\"")
+	c.Response.Header.Set(fasthttp.HeaderContentDisposition, "attachment; filename=\"archive.tar.gz\"")
-	c.Response.SetStatusCode(http.StatusOK)
 
-	c.SetBodyStreamWriter(func(w *bufio.Writer) {
+	c.SetBodyStreamWriter(h.getTarResponseWriter(ctx, log, resSearch, bktInfo))
+}
+
+func (h *Handler) getTarResponseWriter(ctx context.Context, log *zap.Logger, resSearch ResObjectSearch, bktInfo *data.BucketInfo) func(w *bufio.Writer) {
+	return func(w *bufio.Writer) {
 		defer resSearch.Close()
 
-		zipWriter := zip.NewWriter(w)
+		compressionLevel := gzip.NoCompression
+		if h.config.ZipCompression() {
+			compressionLevel = gzip.DefaultCompression
+		}
 
-		var bufZip []byte
+		// ignore error because it's not nil only if compressionLevel argument is invalid
-		var addr oid.Address
+		gzipWriter, _ := gzip.NewWriterLevel(w, compressionLevel)
+		tarWriter := tar.NewWriter(gzipWriter)
 
-		empty := true
+		defer func() {
-		called := false
+			if err := tarWriter.Close(); err != nil {
-		btoken := bearerToken(ctx)
+				log.Error(logs.CloseTarWriter, zap.Error(err))
-		addr.SetContainer(bktInfo.CID)
-
-		errIter := resSearch.Iterate(func(id oid.ID) bool {
-			called = true
-
-			if empty {
-				bufZip = make([]byte, 3<<20) // the same as for upload
 			}
-			empty = false
+			if err := gzipWriter.Close(); err != nil {
-
+				log.Error(logs.CloseGzipWriter, zap.Error(err))
-			addr.SetObject(id)
-			if err = h.zipObject(ctx, zipWriter, addr, btoken, bufZip); err != nil {
-				log.Error(logs.FailedToAddObjectToArchive, zap.String("oid", id.EncodeToString()), zap.Error(err))
 			}
+		}()
 
-			return false
+		var objectsWritten int
-		})
+		buf := make([]byte, 3<<20) // the same as for upload
+
+		errIter := resSearch.Iterate(h.putObjectToArchive(ctx, log, bktInfo.CID, buf,
+			func(obj *object.Object) (io.Writer, error) {
+				objectsWritten++
+				return h.createTarFile(tarWriter, obj)
+			}),
+		)
 		if errIter != nil {
 			log.Error(logs.IteratingOverSelectedObjectsFailed, zap.Error(errIter))
-		} else if !called {
+		} else if objectsWritten == 0 {
-			log.Error(logs.ObjectsNotFound)
+			log.Warn(logs.ObjectsNotFound)
 		}
+	}
+}
 
-		if err = zipWriter.Close(); err != nil {
+func (h *Handler) createTarFile(tw *tar.Writer, obj *object.Object) (io.Writer, error) {
-			log.Error(logs.CloseZipWriter, zap.Error(err))
+	filePath := getFilePath(obj)
-		}
+	if len(filePath) == 0 || filePath[len(filePath)-1] == '/' {
+		return nil, fmt.Errorf("invalid filepath '%s'", filePath)
+	}
+
+	return tw, tw.WriteHeader(&tar.Header{
+		Name: filePath,
+		Mode: 0655,
+		Size: int64(obj.PayloadSize()),
 	})
 }
 
-func (h *Handler) zipObject(ctx context.Context, zipWriter *zip.Writer, addr oid.Address, btoken *bearer.Token, bufZip []byte) error {
+func (h *Handler) putObjectToArchive(ctx context.Context, log *zap.Logger, cnrID cid.ID, buf []byte, createArchiveHeader func(obj *object.Object) (io.Writer, error)) func(id oid.ID) bool {
-	prm := PrmObjectGet{
+	return func(id oid.ID) bool {
-		PrmAuth: PrmAuth{
+		log = log.With(zap.String("oid", id.EncodeToString()))
-			BearerToken: btoken,
-		},
-		Address: addr,
-	}
 
-	resGet, err := h.frostfs.GetObject(ctx, prm)
+		prm := PrmObjectGet{
+			PrmAuth: PrmAuth{
+				BearerToken: bearerToken(ctx),
+			},
+			Address: newAddress(cnrID, id),
+		}
+
+		resGet, err := h.frostfs.GetObject(ctx, prm)
+		if err != nil {
+			log.Error(logs.FailedToGetObject, zap.Error(err))
+			return false
+		}
+
+		fileWriter, err := createArchiveHeader(&resGet.Header)
+		if err != nil {
+			log.Error(logs.FailedToAddObjectToArchive, zap.Error(err))
+			return false
+		}
+
+		if err = writeToArchive(resGet, fileWriter, buf); err != nil {
+			log.Error(logs.FailedToAddObjectToArchive, zap.Error(err))
+			return false
+		}
+
+		return false
+	}
+}
+
+func (h *Handler) searchObjectsByPrefix(c *fasthttp.RequestCtx, log *zap.Logger, cnrID cid.ID) (ResObjectSearch, error) {
+	scid := cnrID.EncodeToString()
+	prefix, _ := c.UserValue("prefix").(string)
+
+	ctx := utils.GetContextFromRequest(c)
+
+	prefix, err := url.QueryUnescape(prefix)
 	if err != nil {
-		return fmt.Errorf("get FrostFS object: %v", err)
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), zap.String("prefix", prefix), zap.Error(err))
+		ResponseError(c, "could not unescape prefix: "+err.Error(), fasthttp.StatusBadRequest)
+		return nil, err
 	}
 
-	objWriter, err := h.addObjectToZip(zipWriter, &resGet.Header)
+	log = log.With(zap.String("cid", scid), zap.String("prefix", prefix))
+
+	resSearch, err := h.search(ctx, cnrID, object.AttributeFilePath, prefix, object.MatchCommonPrefix)
 	if err != nil {
-		return fmt.Errorf("zip create header: %v", err)
+		log.Error(logs.CouldNotSearchForObjects, zap.Error(err))
+		ResponseError(c, "could not search for objects: "+err.Error(), fasthttp.StatusBadRequest)
+		return nil, err
 	}
+	return resSearch, nil
+}
 
-	if _, err = io.CopyBuffer(objWriter, resGet.Payload, bufZip); err != nil {
+func writeToArchive(resGet *Object, objWriter io.Writer, buf []byte) error {
+	var err error
+	if _, err = io.CopyBuffer(objWriter, resGet.Payload, buf); err != nil {
 		return fmt.Errorf("copy object payload to zip file: %v", err)
 	}
 
@@ -208,14 +290,10 @@ func (h *Handler) zipObject(ctx context.Context, zipWriter *zip.Writer, addr oid
 		return fmt.Errorf("object body close error: %w", err)
 	}
 
-	if err = zipWriter.Flush(); err != nil {
-		return fmt.Errorf("flush zip writer: %v", err)
-	}
-
 	return nil
 }
 
-func getZipFilePath(obj *object.Object) string {
+func getFilePath(obj *object.Object) string {
 	for _, attr := range obj.Attributes() {
 		if attr.Key() == object.AttributeFilePath {
 			return attr.Value()

internal/handler/handler.go

@@ -216,7 +216,7 @@ func (h *Handler) byS3Path(ctx context.Context, req request, cnrID cid.ID, path
 	}
 
 	addr := newAddress(cnrID, foundOID.OID)
-	handler(ctx, h.newRequest(c, log), addr)
+	handler(ctx, newRequest(c, log), addr)
 }
 
 // byAttribute is a wrapper similar to byNativeAddress.
@@ -265,7 +265,7 @@ func (h *Handler) byAttribute(c *fasthttp.RequestCtx, handler func(context.Conte
 	addr.SetContainer(bktInfo.CID)
 	addr.SetObject(objID)
 
-	handler(ctx, h.newRequest(c, log), addr)
+	handler(ctx, newRequest(c, log), addr)
 }
 
 func (h *Handler) findObjectByAttribute(ctx context.Context, log *zap.Logger, cnrID cid.ID, attrKey, attrVal string) (oid.ID, error) {

internal/handler/handler_fuzz_test.go

@@ -517,7 +517,7 @@ func DoFuzzDownloadZipped(input []byte) int {
 	r.SetUserValue("cid", cid)
 	r.SetUserValue("prefix", prefix)
 
-	hc.Handler().DownloadZipped(r)
+	hc.Handler().DownloadZip(r)
 
 	return fuzzSuccessExitCode
 }

internal/handler/handler_test.go

@@ -250,7 +250,7 @@ func TestBasic(t *testing.T) {
 
 	t.Run("zip", func(t *testing.T) {
 		r = prepareGetZipped(ctx, bktName, "")
-		hc.Handler().DownloadZipped(r)
+		hc.Handler().DownloadZip(r)
 
 		readerAt := bytes.NewReader(r.Response.Body())
 		zipReader, err := zip.NewReader(readerAt, int64(len(r.Response.Body())))

internal/handler/head.go

@@ -135,7 +135,7 @@ func (h *Handler) HeadByAddressOrBucketName(c *fasthttp.RequestCtx) {
 		return
 	}
 
-	req := h.newRequest(c, log)
+	req := newRequest(c, log)
 
 	var objID oid.ID
 	if checkS3Err == nil {

internal/handler/utils.go

@@ -24,6 +24,13 @@ type request struct {
 	log *zap.Logger
 }
 
+func newRequest(ctx *fasthttp.RequestCtx, log *zap.Logger) request {
+	return request{
+		RequestCtx: ctx,
+		log:        log,
+	}
+}
+
 func (r *request) handleFrostFSErr(err error, start time.Time) {
 	logFields := []zap.Field{
 		zap.Stringer("elapsed", time.Since(start)),

internal/logs/logs.go

@@ -11,9 +11,12 @@ const (
 	ObjectNotFound                                                        = "object not found"                                                                       // Error in ../../downloader/download.go
 	ReadObjectListFailed                                                  = "read object list failed"                                                                // Error in ../../downloader/download.go
 	FailedToAddObjectToArchive                                            = "failed to add object to archive"                                                        // Error in ../../downloader/download.go
+	FailedToGetObject                                                     = "failed to get object"                                                                   // Error in ../../downloader/download.go
 	IteratingOverSelectedObjectsFailed                                    = "iterating over selected objects failed"                                                 // Error in ../../downloader/download.go
 	ObjectsNotFound                                                       = "objects not found"                                                                      // Error in ../../downloader/download.go
 	CloseZipWriter                                                        = "close zip writer"                                                                       // Error in ../../downloader/download.go
+	CloseGzipWriter                                                       = "close gzip writer"                                                                      // Error in ../../downloader/download.go
+	CloseTarWriter                                                        = "close tar writer"                                                                       // Error in ../../downloader/download.go
 	ServiceIsRunning                                                      = "service is running"                                                                     // Info in ../../metrics/service.go
 	ServiceCouldntStartOnConfiguredPort                                   = "service couldn't start on configured port"                                              // Warn in ../../metrics/service.go
 	ServiceHasntStartedSinceItsDisabled                                   = "service hasn't started since it's disabled"                                             // Info in ../../metrics/service.go
@@ -24,7 +27,6 @@ const (
 	IgnorePartEmptyFilename                                               = "ignore part, empty filename"                                                            // Debug in ../../uploader/upload.go
 	CloseTemporaryMultipartFormFile                                       = "close temporary multipart/form file"                                                    // Debug in ../../uploader/upload.go
 	CouldNotReceiveMultipartForm                                          = "could not receive multipart/form"                                                       // Error in ../../uploader/upload.go
-	CouldNotProcessHeaders                                                = "could not process headers"                                                              // Error in ../../uploader/upload.go
 	CouldNotParseClientTime                                               = "could not parse client time"                                                            // Warn in ../../uploader/upload.go
 	CouldNotPrepareExpirationHeader                                       = "could not prepare expiration header"                                                    // Error in ../../uploader/upload.go
 	CouldNotEncodeResponse                                                = "could not encode response"                                                              // Error in ../../uploader/upload.go