add support for ACME compliant certificate authorities

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

logger/lego.go

@@ -0,0 +1,58 @@
+package logger
+
+import "fmt"
+
+const (
+	legoLogSender = "lego"
+)
+
+// LegoAdapter is an adapter for lego.StdLogger
+type LegoAdapter struct {
+	LogToConsole bool
+}
+
+// Fatal emits a log at Error level
+func (l *LegoAdapter) Fatal(args ...any) {
+	if l.LogToConsole {
+		ErrorToConsole(fmt.Sprint(args...))
+		return
+	}
+	Log(LevelError, legoLogSender, "", fmt.Sprint(args...))
+}
+
+// Fatalln is the same as Fatal
+func (l *LegoAdapter) Fatalln(args ...any) {
+	l.Fatal(args...)
+}
+
+// Fatalf emits a log at Error level
+func (l *LegoAdapter) Fatalf(format string, args ...any) {
+	if l.LogToConsole {
+		ErrorToConsole(format, args...)
+		return
+	}
+	Log(LevelError, legoLogSender, "", format, args...)
+}
+
+// Print emits a log at Info level
+func (l *LegoAdapter) Print(args ...any) {
+	if l.LogToConsole {
+		InfoToConsole(fmt.Sprint(args...))
+		return
+	}
+	Log(LevelInfo, legoLogSender, "", fmt.Sprint(args...))
+}
+
+// Println is the same as Print
+func (l *LegoAdapter) Println(args ...any) {
+	l.Print(args...)
+}
+
+// Printf emits a log at Info level
+func (l *LegoAdapter) Printf(format string, args ...any) {
+	if l.LogToConsole {
+		InfoToConsole(format, args...)
+		return
+	}
+	Log(LevelInfo, legoLogSender, "", format, args...)
+}