GODT-1187: Remove IMAP/SMTP blocking when no internet.

internal/serverutil/error_logger.go

@@ -0,0 +1,39 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package serverutil
+
+import (
+	"github.com/sirupsen/logrus"
+)
+
+// ServerErrorLogger implements go-imap/logger interface.
+type ServerErrorLogger struct {
+	l *logrus.Entry
+}
+
+func NewServerErrorLogger(protocol Protocol) *ServerErrorLogger {
+	return &ServerErrorLogger{l: logrus.WithField("protocol", protocol)}
+}
+
+func (s *ServerErrorLogger) Printf(format string, args ...interface{}) {
+	s.l.Errorf(format, args...)
+}
+
+func (s *ServerErrorLogger) Println(args ...interface{}) {
+	s.l.Errorln(args...)
+}