Add wrapper around olric log (#289)

* Add wrapper around olric logger

* Remove remaining print

pkg/distcache/olric-logwriter.go

@@ -0,0 +1,34 @@
+package distcache
+
+import (
+	"bytes"
+
+	"github.com/fluxninja/aperture/pkg/log"
+)
+
+// OlricLogWriter is wrapper around aperture Logger that parse the message before writing to olricConfig.LogOutput.
+type OlricLogWriter struct {
+	Logger log.Logger
+}
+
+// Write writes the message and logs in aperture Logger format.
+func (ol *OlricLogWriter) Write(message []byte) (int, error) {
+	message = bytes.TrimSpace(message)
+	if len(message) < 2 {
+		ol.Logger.Info().Msg(string(message))
+	} else {
+		switch message[1] {
+		case 'I':
+			ol.Logger.Info().Msg(string(message[7:]))
+		case 'W':
+			ol.Logger.Warn().Msg(string(message[7:]))
+		case 'E':
+			ol.Logger.Error().Msg(string(message[8:]))
+		case 'D':
+			ol.Logger.Debug().Msg(string(message[8:]))
+		default:
+			ol.Logger.Info().Msg(string(message))
+		}
+	}
+	return len(message), nil
+}