[chore] Fix logs bytes delta size (#12546)

This is not used because the bytes sizer is not enabled yet.

Signed-off-by: Bogdan Drutu <[email protected]>

Author: bogdandrutu

exporter/exporterhelper/internal/sizer/logs_sizer.go

@@ -37,7 +37,7 @@ type LogsBytesSizer struct {
 // This is derived from opentelemetry-collector/pdata/internal/data/protogen/logs/v1/logs.pb.go
 // which is generated with gogo/protobuf.
 func (s *LogsBytesSizer) DeltaSize(newItemSize int) int {
-	return 1 + newItemSize + math_bits.Len64(uint64(newItemSize|1)+6)/7 //nolint:gosec // disable G115
+	return 1 + newItemSize + sov(uint64(newItemSize)) //nolint:gosec // disable G115
 }
 
 // LogsCountSizer returns the nunmber of logs entries.
@@ -66,3 +66,7 @@ func (s *LogsCountSizer) LogRecordSize(_ plog.LogRecord) int {
 func (s *LogsCountSizer) DeltaSize(newItemSize int) int {
 	return newItemSize
 }
+
+func sov(x uint64) int {
+	return (math_bits.Len64(x|1) + 6) / 7
+}

exporter/exporterhelper/internal/sizer/logs_sizer_test.go

@@ -55,3 +55,10 @@ func TestLogsBytesSizer(t *testing.T) {
 	lr.CopyTo(sl.LogRecords().AppendEmpty())
 	require.Equal(t, sizer.ScopeLogsSize(sl), prevSize+sizer.DeltaSize(sizer.LogRecordSize(lr)))
 }
+
+func TestLogsBytesDeltaSize(t *testing.T) {
+	sizer := LogsBytesSizer{}
+	require.Equal(t, 129, sizer.DeltaSize(127))
+	require.Equal(t, 131, sizer.DeltaSize(128))
+	require.Equal(t, 242, sizer.DeltaSize(239))
+}