Adding upstream version 2.52.6.

Signed-off-by: Daniel Baumann <daniel@debian.org>

middleware/logger/data.go

@@ -0,0 +1,16 @@
+package logger
+
+import (
+	"sync/atomic"
+	"time"
+)
+
+// Data is a struct to define some variables to use in custom logger function.
+type Data struct {
+	Pid           string
+	ErrPaddingStr string
+	ChainErr      error
+	Start         time.Time
+	Stop          time.Time
+	Timestamp     atomic.Value
+}