[#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>

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(), inputErr.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)
+	})
+}