Merge pull request #171 from KirillovDenis/feature/149-remove_grpc_errors

[#149] Remove grpc errors

api/errors_test.go

@@ -0,0 +1,26 @@
+package api
+
+import (
+	"errors"
+	"testing"
+)
+
+func BenchmarkErrCode(b *testing.B) {
+	err := GetAPIError(ErrNoSuchKey)
+
+	for i := 0; i < b.N; i++ {
+		if IsS3Error(err, ErrNoSuchKey) {
+			_ = err
+		}
+	}
+}
+
+func BenchmarkErrorsIs(b *testing.B) {
+	err := GetAPIError(ErrNoSuchKey)
+
+	for i := 0; i < b.N; i++ {
+		if errors.Is(err, GetAPIError(ErrNoSuchKey)) {
+			_ = err
+		}
+	}
+}

api/handler/delete.go

@@ -8,7 +8,6 @@ import (
 	"github.com/nspcc-dev/neofs-s3-gw/api"
 	"github.com/nspcc-dev/neofs-s3-gw/api/layer"
 	"go.uber.org/zap"
-	"google.golang.org/grpc/status"
 )
 
 // DeleteObjectsRequest - xml carrying the object key names which needs to be deleted.
@@ -122,11 +121,6 @@ func (h *handler) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Re
 				code := "BadRequest"
 				desc := err.Error()
 
-				if st, ok := status.FromError(err.Err); ok && st != nil {
-					desc = st.Message()
-					code = st.Code().String()
-				}
-
 				response.Errors = append(response.Errors, DeleteError{
 					Code:    code,
 					Message: desc,

api/handler/head.go

@@ -2,7 +2,6 @@ package handler
 
 import (
 	"bytes"
-	"errors"
 	"net/http"
 
 	"github.com/gorilla/mux"
@@ -43,10 +42,6 @@ func (h *handler) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
 			zap.String("object_name", obj),
 			zap.Error(err))
 
-		var genErr *api.ObjectNotFound
-		if ok := errors.As(err, &genErr); ok {
-			err = api.GetAPIError(api.ErrNoSuchKey)
-		}
 		api.WriteErrorResponse(r.Context(), w, err, r.URL)
 		return
 	}
@@ -87,13 +82,7 @@ func (h *handler) HeadBucketHandler(w http.ResponseWriter, r *http.Request) {
 			zap.String("bucket_name", bkt),
 			zap.Error(err))
 
-		code := http.StatusBadRequest
-		if errors.Is(err, layer.ErrBucketNotFound) {
-			code = http.StatusNotFound
-		}
-
-		api.WriteResponse(w, code, nil, api.MimeNone)
-
+		api.WriteErrorResponse(r.Context(), w, err, r.URL)
 		return
 	}
 

api/layer/container.go

@@ -50,7 +50,7 @@ func (n *layer) containerInfo(ctx context.Context, cid *cid.ID) (*BucketInfo, er
 			zap.Error(err))
 
 		if strings.Contains(err.Error(), "container not found") {
-			return nil, ErrBucketNotFound
+			return nil, api.GetAPIError(api.ErrNoSuchBucket)
 		}
 		return nil, err
 	}

api/layer/layer.go

@@ -3,7 +3,6 @@ package layer
 import (
 	"context"
 	"crypto/ecdsa"
-	"errors"
 	"fmt"
 	"io"
 	"net/url"
@@ -19,8 +18,6 @@ import (
 	"github.com/nspcc-dev/neofs-s3-gw/creds/accessbox"
 	"github.com/nspcc-dev/neofs-sdk-go/pkg/pool"
 	"go.uber.org/zap"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
 )
 
 type (
@@ -122,17 +119,6 @@ type (
 	}
 )
 
-var (
-	// ErrObjectExists is returned on attempts to create already existing object.
-	ErrObjectExists = errors.New("object exists")
-	// ErrObjectNotExists is returned on attempts to work with non-existing object.
-	ErrObjectNotExists = errors.New("object not exists")
-	// ErrBucketAlreadyExists is returned on attempts to create already existing bucket.
-	ErrBucketAlreadyExists = errors.New("bucket exists")
-	// ErrBucketNotFound is returned on attempts to get not existing bucket.
-	ErrBucketNotFound = errors.New("bucket not found")
-)
-
 const (
 	unversionedObjectVersionID = "null"
 )
@@ -198,7 +184,7 @@ func (n *layer) GetBucketInfo(ctx context.Context, name string) (*BucketInfo, er
 			}
 		}
 
-		return nil, ErrBucketNotFound
+		return nil, api.GetAPIError(api.ErrNoSuchBucket)
 	}
 
 	return n.containerInfo(ctx, containerID)
@@ -257,11 +243,7 @@ func (n *layer) checkObject(ctx context.Context, cid *cid.ID, filename string) e
 	var err error
 
 	if _, err = n.objectFindID(ctx, &findParams{cid: cid, val: filename}); err == nil {
-		return ErrObjectExists
-	} else if state, ok := status.FromError(err); !ok || state == nil {
-		return err
-	} else if state.Code() == codes.NotFound {
-		return ErrObjectNotExists
+		return new(api.ObjectAlreadyExists)
 	}
 
 	return err
@@ -378,13 +360,13 @@ func (n *layer) DeleteObjects(ctx context.Context, bucket string, objects []stri
 func (n *layer) CreateBucket(ctx context.Context, p *CreateBucketParams) (*cid.ID, error) {
 	_, err := n.GetBucketInfo(ctx, p.Name)
 	if err != nil {
-		if errors.Is(err, ErrBucketNotFound) {
+		if api.IsS3Error(err, api.ErrNoSuchBucket) {
 			return n.createContainer(ctx, p)
 		}
 		return nil, err
 	}
 
-	return nil, ErrBucketAlreadyExists
+	return nil, api.GetAPIError(api.ErrBucketAlreadyExists)
 }
 
 func (n *layer) DeleteBucket(ctx context.Context, p *DeleteBucketParams) error {

api/layer/object.go

@@ -81,7 +81,7 @@ func (n *layer) objectFindID(ctx context.Context, p *findParams) (*object.ID, er
 	if result, err := n.objectSearch(ctx, p); err != nil {
 		return nil, err
 	} else if ln := len(result); ln == 0 {
-		return nil, &api.ObjectNotFound{Bucket: p.cid.String(), Object: p.val}
+		return nil, api.GetAPIError(api.ErrNoSuchKey)
 	} else if ln == 1 {
 		return result[0], nil
 	}
@@ -123,12 +123,16 @@ func (n *layer) objectPut(ctx context.Context, p *PutObjectParams) (*ObjectInfo,
 		return nil, err
 	} else if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil {
 		return nil, err
-	} else if err = n.checkObject(ctx, bkt.CID, p.Object); err != nil && err != ErrObjectNotExists {
-		return nil, err
-	} else if err == ErrObjectExists {
-		return nil, &api.ObjectAlreadyExists{
-			Bucket: p.Bucket,
-			Object: p.Object,
+	} else if err = n.checkObject(ctx, bkt.CID, p.Object); err != nil {
+		var errExist *api.ObjectAlreadyExists
+		if ok := errors.As(err, &errExist); ok {
+			errExist.Bucket = p.Bucket
+			errExist.Object = p.Object
+			return nil, errExist
+		}
+
+		if !api.IsS3Error(err, api.ErrNoSuchKey) {
+			return nil, err
 		}
 	}
 

api/response.go

@@ -38,6 +38,7 @@ type (
 
 	// Error structure represents API error.
 	Error struct {
+		ErrCode        ErrorCode
 		Code           string
 		Description    string
 		HTTPStatusCode int