[WIP] first implementation stubs

internal/utils/logging.go

@@ -0,0 +1,28 @@
+package utils
+
+import (
+	"os"
+
+	"git.uploadfilter24.eu/covidnetes/mail-dns-service/internal"
+	log "github.com/sirupsen/logrus"
+)
+
+func ConfigureLogger(cfg *internal.Config) {
+
+	switch cfg.LogLevel {
+	case "Debug":
+		log.SetLevel(log.DebugLevel)
+	case "Info":
+		log.SetLevel(log.InfoLevel)
+	case "Warn":
+		log.SetLevel(log.WarnLevel)
+	case "Error":
+		log.SetLevel(log.ErrorLevel)
+	default:
+		log.SetLevel(log.InfoLevel)
+		log.Warnf("Home: invalid log level supplied: '%s'", cfg.LogLevel)
+	}
+
+	log.SetFormatter(&log.JSONFormatter{})
+	log.SetOutput(os.Stdout)
+}