[#187] Add handling quota limit reached error

The Access Denied status may be received
from APE due to exceeding the quota. In
this situation, you need to return the
appropriate status code.

Signed-off-by: Roman Loginov <r.loginov@yadro.com>

cmd/http-gw/app.go

@@ -25,7 +25,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/templates"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/metrics"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
@@ -634,28 +633,28 @@ func (a *app) stopServices() {
 	}
 }
 
-func (a *app) configureRouter(handler *handler.Handler) {
+func (a *app) configureRouter(h *handler.Handler) {
 	r := router.New()
 	r.RedirectTrailingSlash = true
 	r.NotFound = func(r *fasthttp.RequestCtx) {
-		response.Error(r, "Not found", fasthttp.StatusNotFound)
+		handler.ResponseError(r, "Not found", fasthttp.StatusNotFound)
 	}
 	r.MethodNotAllowed = func(r *fasthttp.RequestCtx) {
-		response.Error(r, "Method Not Allowed", fasthttp.StatusMethodNotAllowed)
+		handler.ResponseError(r, "Method Not Allowed", fasthttp.StatusMethodNotAllowed)
 	}
 
-	r.POST("/upload/{cid}", a.addMiddlewares(handler.Upload))
+	r.POST("/upload/{cid}", a.addMiddlewares(h.Upload))
 	r.OPTIONS("/upload/{cid}", a.addPreflight())
 	a.log.Info(logs.AddedPathUploadCid)
-	r.GET("/get/{cid}/{oid:*}", a.addMiddlewares(handler.DownloadByAddressOrBucketName))
-	r.HEAD("/get/{cid}/{oid:*}", a.addMiddlewares(handler.HeadByAddressOrBucketName))
+	r.GET("/get/{cid}/{oid:*}", a.addMiddlewares(h.DownloadByAddressOrBucketName))
+	r.HEAD("/get/{cid}/{oid:*}", a.addMiddlewares(h.HeadByAddressOrBucketName))
 	r.OPTIONS("/get/{cid}/{oid:*}", a.addPreflight())
 	a.log.Info(logs.AddedPathGetCidOid)
-	r.GET("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.addMiddlewares(handler.DownloadByAttribute))
-	r.HEAD("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.addMiddlewares(handler.HeadByAttribute))
+	r.GET("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.addMiddlewares(h.DownloadByAttribute))
+	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(handler.DownloadZipped))
+	r.GET("/zip/{cid}/{prefix:*}", a.addMiddlewares(h.DownloadZipped))
 	r.OPTIONS("/zip/{cid}/{prefix:*}", a.addPreflight())
 	a.log.Info(logs.AddedPathZipCidPrefix)
 
@@ -798,7 +797,7 @@ func (a *app) tokenizer(h fasthttp.RequestHandler) fasthttp.RequestHandler {
 			log := utils.GetReqLogOrDefault(reqCtx, a.log)
 
 			log.Error(logs.CouldNotFetchAndStoreBearerToken, zap.Error(err))
-			response.Error(req, "could not fetch and store bearer token: "+err.Error(), fasthttp.StatusBadRequest)
+			handler.ResponseError(req, "could not fetch and store bearer token: "+err.Error(), fasthttp.StatusBadRequest)
 			return
 		}
 		utils.SetContextToRequest(appCtx, req)

internal/handler/download.go

@@ -13,7 +13,6 @@ import (
 
 	"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/response"
 	"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"
@@ -120,7 +119,7 @@ func (h *Handler) DownloadZipped(c *fasthttp.RequestCtx) {
 	prefix, err := url.QueryUnescape(prefix)
 	if err != nil {
 		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), zap.String("prefix", prefix), zap.Error(err))
-		response.Error(c, "could not unescape prefix: "+err.Error(), fasthttp.StatusBadRequest)
+		ResponseError(c, "could not unescape prefix: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
@@ -135,7 +134,7 @@ func (h *Handler) DownloadZipped(c *fasthttp.RequestCtx) {
 	resSearch, err := h.search(ctx, bktInfo.CID, object.AttributeFilePath, prefix, object.MatchCommonPrefix)
 	if err != nil {
 		log.Error(logs.CouldNotSearchForObjects, zap.Error(err))
-		response.Error(c, "could not search for objects: "+err.Error(), fasthttp.StatusBadRequest)
+		ResponseError(c, "could not search for objects: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 

internal/handler/handler.go

@@ -13,7 +13,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
 	"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/response"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
 	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
@@ -140,6 +139,8 @@ var (
 	ErrAccessDenied = errors.New("access denied")
 	// ErrGatewayTimeout is returned from FrostFS in case of timeout, deadline exceeded etc.
 	ErrGatewayTimeout = errors.New("gateway timeout")
+	// ErrQuotaLimitReached is returned from FrostFS in case of quota exceeded.
+	ErrQuotaLimitReached = errors.New("quota limit reached")
 )
 
 // FrostFS represents virtual connection to FrostFS network.
@@ -210,7 +211,7 @@ func (h *Handler) byS3Path(ctx context.Context, req request, cnrID cid.ID, path
 	}
 	if foundOID.IsDeleteMarker {
 		log.Error(logs.ObjectWasDeleted)
-		response.Error(c, "object deleted", fasthttp.StatusNotFound)
+		ResponseError(c, "object deleted", fasthttp.StatusNotFound)
 		return
 	}
 
@@ -230,14 +231,14 @@ func (h *Handler) byAttribute(c *fasthttp.RequestCtx, handler func(context.Conte
 	key, err := url.QueryUnescape(key)
 	if err != nil {
 		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", cidParam), zap.String("attr_key", key), zap.Error(err))
-		response.Error(c, "could not unescape attr_key: "+err.Error(), fasthttp.StatusBadRequest)
+		ResponseError(c, "could not unescape attr_key: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
 	val, err = url.QueryUnescape(val)
 	if err != nil {
 		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", cidParam), zap.String("attr_val", val), zap.Error(err))
-		response.Error(c, "could not unescape attr_val: "+err.Error(), fasthttp.StatusBadRequest)
+		ResponseError(c, "could not unescape attr_val: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
@@ -252,11 +253,11 @@ func (h *Handler) byAttribute(c *fasthttp.RequestCtx, handler func(context.Conte
 	objID, err := h.findObjectByAttribute(ctx, log, bktInfo.CID, key, val)
 	if err != nil {
 		if errors.Is(err, io.EOF) {
-			response.Error(c, err.Error(), fasthttp.StatusNotFound)
+			ResponseError(c, err.Error(), fasthttp.StatusNotFound)
 			return
 		}
 
-		response.Error(c, err.Error(), fasthttp.StatusBadRequest)
+		ResponseError(c, err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 

internal/handler/reader.go

@@ -10,7 +10,6 @@ import (
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@@ -131,7 +130,7 @@ func (h *Handler) receiveFile(ctx context.Context, req request, objAddress oid.A
 		})
 		if err != nil && err != io.EOF {
 			req.log.Error(logs.CouldNotDetectContentTypeFromPayload, zap.Error(err))
-			response.Error(req.RequestCtx, "could not detect Content-Type from payload: "+err.Error(), fasthttp.StatusBadRequest)
+			ResponseError(req.RequestCtx, "could not detect Content-Type from payload: "+err.Error(), fasthttp.StatusBadRequest)
 			return
 		}
 

internal/handler/upload.go

@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
@@ -81,14 +80,14 @@ func (h *Handler) Upload(c *fasthttp.RequestCtx) {
 	boundary := string(c.Request.Header.MultipartFormBoundary())
 	if file, err = fetchMultipartFile(log, bodyStream, boundary); err != nil {
 		log.Error(logs.CouldNotReceiveMultipartForm, zap.Error(err))
-		response.Error(c, "could not receive multipart/form: "+err.Error(), fasthttp.StatusBadRequest)
+		ResponseError(c, "could not receive multipart/form: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
 	filtered, err := filterHeaders(log, &c.Request.Header)
 	if err != nil {
 		log.Error(logs.CouldNotProcessHeaders, zap.Error(err))
-		response.Error(c, err.Error(), fasthttp.StatusBadRequest)
+		ResponseError(c, err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
@@ -103,7 +102,7 @@ func (h *Handler) Upload(c *fasthttp.RequestCtx) {
 
 	if err = utils.PrepareExpirationHeader(c, h.frostfs, filtered, now); err != nil {
 		log.Error(logs.CouldNotPrepareExpirationHeader, zap.Error(err))
-		response.Error(c, "could not prepare expiration header: "+err.Error(), fasthttp.StatusBadRequest)
+		ResponseError(c, "could not prepare expiration header: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
@@ -157,7 +156,7 @@ func (h *Handler) Upload(c *fasthttp.RequestCtx) {
 	// Try to return the response, otherwise, if something went wrong, throw an error.
 	if err = newPutResponse(addr).encode(c); err != nil {
 		log.Error(logs.CouldNotEncodeResponse, zap.Error(err))
-		response.Error(c, "could not encode response", fasthttp.StatusBadRequest)
+		ResponseError(c, "could not encode response", fasthttp.StatusBadRequest)
 
 		return
 	}
@@ -179,11 +178,10 @@ func (h *Handler) Upload(c *fasthttp.RequestCtx) {
 }
 
 func (h *Handler) handlePutFrostFSErr(r *fasthttp.RequestCtx, err error, log *zap.Logger) {
-	statusCode, msg, additionalFields := response.FormErrorResponse("could not store file in frostfs", err)
-	logFields := append([]zap.Field{zap.Error(err)}, additionalFields...)
+	statusCode, msg := formErrorResponse("could not store file in frostfs", err)
 
-	log.Error(logs.CouldNotStoreFileInFrostfs, logFields...)
-	response.Error(r, msg, statusCode)
+	log.Error(logs.CouldNotStoreFileInFrostfs, zap.Error(err))
+	ResponseError(r, msg, statusCode)
 }
 
 func (h *Handler) fetchBearerToken(ctx context.Context) *bearer.Token {

internal/handler/utils.go

@@ -2,11 +2,12 @@ package handler
 
 import (
 	"context"
+	"errors"
+	"fmt"
 	"strings"
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
@@ -27,11 +28,10 @@ func (r *request) handleFrostFSErr(err error, start time.Time) {
 		zap.Stringer("elapsed", time.Since(start)),
 		zap.Error(err),
 	}
-	statusCode, msg, additionalFields := response.FormErrorResponse("could not receive object", err)
-	logFields = append(logFields, additionalFields...)
+	statusCode, msg := formErrorResponse("could not receive object", err)
 
 	r.log.Error(logs.CouldNotReceiveObject, logFields...)
-	response.Error(r.RequestCtx, msg, statusCode)
+	ResponseError(r.RequestCtx, msg, statusCode)
 }
 
 func bearerToken(ctx context.Context) *bearer.Token {
@@ -76,13 +76,10 @@ func isValidValue(s string) bool {
 }
 
 func logAndSendBucketError(c *fasthttp.RequestCtx, log *zap.Logger, err error) {
-	log.Error(logs.CouldntGetBucket, zap.Error(err))
+	statusCode, msg := formErrorResponse("could not get bucket", err)
 
-	if client.IsErrContainerNotFound(err) {
-		response.Error(c, "Not Found", fasthttp.StatusNotFound)
-		return
-	}
-	response.Error(c, "could not get bucket: "+err.Error(), fasthttp.StatusBadRequest)
+	log.Error(logs.CouldntGetBucket, zap.Error(err))
+	ResponseError(c, msg, statusCode)
 }
 
 func newAddress(cnr cid.ID, obj oid.ID) oid.Address {
@@ -91,3 +88,34 @@ func newAddress(cnr cid.ID, obj oid.ID) oid.Address {
 	addr.SetObject(obj)
 	return addr
 }
+
+func ResponseError(r *fasthttp.RequestCtx, msg string, code int) {
+	r.Error(msg+"\n", code)
+}
+
+func formErrorResponse(message string, err error) (int, string) {
+	var (
+		errMsg     string
+		statusCode int
+	)
+
+	switch {
+	case errors.Is(err, ErrAccessDenied):
+		statusCode = fasthttp.StatusForbidden
+		errMsg = err.Error()
+	case errors.Is(err, ErrGatewayTimeout):
+		statusCode = fasthttp.StatusBadGateway
+		errMsg = err.Error()
+	case errors.Is(err, ErrQuotaLimitReached):
+		statusCode = fasthttp.StatusConflict
+		errMsg = err.Error()
+	case client.IsErrObjectNotFound(err) || client.IsErrContainerNotFound(err):
+		statusCode = fasthttp.StatusNotFound
+		errMsg = "Not Found"
+	default:
+		statusCode = fasthttp.StatusBadRequest
+		errMsg = err.Error()
+	}
+
+	return statusCode, fmt.Sprintf("%s: %s", message, errMsg)
+}

internal/service/frostfs/frostfs.go

@@ -205,6 +205,9 @@ func handleObjectError(msg string, err error) error {
 	}
 
 	if reason, ok := IsErrObjectAccessDenied(err); ok {
+		if strings.Contains(reason, "limit reached") {
+			return fmt.Errorf("%s: %w: %s", msg, handler.ErrQuotaLimitReached, reason)
+		}
 		return fmt.Errorf("%s: %w: %s", msg, handler.ErrAccessDenied, reason)
 	}
 

internal/service/frostfs/frostfs_test.go

@@ -0,0 +1,83 @@
+package frostfs
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"testing"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	"github.com/stretchr/testify/require"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func TestHandleObjectError(t *testing.T) {
+	msg := "some msg"
+
+	t.Run("nil error", func(t *testing.T) {
+		err := handleObjectError(msg, nil)
+		require.Nil(t, err)
+	})
+
+	t.Run("simple access denied", func(t *testing.T) {
+		reason := "some reason"
+		inputErr := new(apistatus.ObjectAccessDenied)
+		inputErr.WriteReason(reason)
+
+		err := handleObjectError(msg, inputErr)
+		require.ErrorIs(t, err, handler.ErrAccessDenied)
+		require.Contains(t, err.Error(), reason)
+		require.Contains(t, err.Error(), msg)
+	})
+
+	t.Run("access denied - quota reached", func(t *testing.T) {
+		reason := "Quota limit reached"
+		inputErr := new(apistatus.ObjectAccessDenied)
+		inputErr.WriteReason(reason)
+
+		err := handleObjectError(msg, inputErr)
+		require.ErrorIs(t, err, handler.ErrQuotaLimitReached)
+		require.Contains(t, err.Error(), reason)
+		require.Contains(t, err.Error(), msg)
+	})
+
+	t.Run("simple timeout", func(t *testing.T) {
+		inputErr := errors.New("timeout")
+
+		err := handleObjectError(msg, inputErr)
+		require.ErrorIs(t, err, handler.ErrGatewayTimeout)
+		require.Contains(t, err.Error(), inputErr.Error())
+		require.Contains(t, err.Error(), msg)
+	})
+
+	t.Run("deadline exceeded", func(t *testing.T) {
+		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Millisecond)
+		defer cancel()
+		<-ctx.Done()
+
+		err := handleObjectError(msg, ctx.Err())
+		require.ErrorIs(t, err, handler.ErrGatewayTimeout)
+		require.Contains(t, err.Error(), ctx.Err().Error())
+		require.Contains(t, err.Error(), msg)
+	})
+
+	t.Run("grpc deadline exceeded", func(t *testing.T) {
+		inputErr := fmt.Errorf("wrap grpc error: %w", status.Error(codes.DeadlineExceeded, "error"))
+
+		err := handleObjectError(msg, inputErr)
+		require.ErrorIs(t, err, handler.ErrGatewayTimeout)
+		require.Contains(t, err.Error(), err.Error())
+		require.Contains(t, err.Error(), msg)
+	})
+
+	t.Run("unknown error", func(t *testing.T) {
+		inputErr := errors.New("unknown error")
+
+		err := handleObjectError(msg, inputErr)
+		require.ErrorIs(t, err, inputErr)
+		require.Contains(t, err.Error(), msg)
+	})
+}

response/utils.go

@@ -1,41 +0,0 @@
-package response
-
-import (
-	"errors"
-	"fmt"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
-	sdkstatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
-	"github.com/valyala/fasthttp"
-	"go.uber.org/zap"
-)
-
-func Error(r *fasthttp.RequestCtx, msg string, code int) {
-	r.Error(msg+"\n", code)
-}
-
-func FormErrorResponse(message string, err error) (int, string, []zap.Field) {
-	var (
-		msg        string
-		statusCode int
-		logFields  []zap.Field
-	)
-
-	st := new(sdkstatus.ObjectAccessDenied)
-
-	switch {
-	case errors.As(err, &st):
-		statusCode = fasthttp.StatusForbidden
-		reason := st.Reason()
-		msg = fmt.Sprintf("%s: %v: %s", message, err, reason)
-		logFields = append(logFields, zap.String("error_detail", reason))
-	case client.IsErrObjectNotFound(err) || client.IsErrContainerNotFound(err):
-		statusCode = fasthttp.StatusNotFound
-		msg = "Not Found"
-	default:
-		statusCode = fasthttp.StatusBadRequest
-		msg = fmt.Sprintf("%s: %v", message, err)
-	}
-
-	return statusCode, msg, logFields
-}