1 files changed, 37 insertions, 0 deletions
diff --git a/internal/log/writer.go b/internal/log/writer.go
new file mode 100644
index 000000000..4356d9b7d
--- /dev/null
+++ b/internal/log/writer.go
@@ -0,0 +1,37 @@
+/*
+   GoToSocial
+   Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package log
+
+import (
+	"io"
+	"sync"
+)
+
+// safewriter wraps a writer to provide mutex safety on write.
+type safewriter struct {
+	w io.Writer
+	m sync.Mutex
+}
+
+func (w *safewriter) Write(b []byte) (int, error) {
+	w.m.Lock()
+	n, err := w.w.Write(b)
+	w.m.Unlock()
+	return n, err
+}