1 files changed, 53 insertions, 0 deletions
diff --git a/modules/log/event_writer_file.go b/modules/log/event_writer_file.go
new file mode 100644
index 0000000..fd73d7d
--- /dev/null
+++ b/modules/log/event_writer_file.go
@@ -0,0 +1,53 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package log
+
+import (
+	"io"
+
+	"code.gitea.io/gitea/modules/util/rotatingfilewriter"
+)
+
+type WriterFileOption struct {
+	FileName         string
+	MaxSize          int64
+	LogRotate        bool
+	DailyRotate      bool
+	MaxDays          int
+	Compress         bool
+	CompressionLevel int
+}
+
+type eventWriterFile struct {
+	*EventWriterBaseImpl
+	fileWriter io.WriteCloser
+}
+
+var _ EventWriter = (*eventWriterFile)(nil)
+
+func NewEventWriterFile(name string, mode WriterMode) EventWriter {
+	w := &eventWriterFile{EventWriterBaseImpl: NewEventWriterBase(name, "file", mode)}
+	opt := mode.WriterOption.(WriterFileOption)
+	var err error
+	w.fileWriter, err = rotatingfilewriter.Open(opt.FileName, &rotatingfilewriter.Options{
+		Rotate:           opt.LogRotate,
+		MaximumSize:      opt.MaxSize,
+		RotateDaily:      opt.DailyRotate,
+		KeepDays:         opt.MaxDays,
+		Compress:         opt.Compress,
+		CompressionLevel: opt.CompressionLevel,
+	})
+	if err != nil {
+		// if the log file can't be opened, what should it do? panic/exit? ignore logs? fallback to stderr?
+		// it seems that "fallback to stderr" is slightly better than others ....
+		FallbackErrorf("unable to open log file %q: %v", opt.FileName, err)
+		w.fileWriter = nopCloser{Writer: LoggerToWriter(FallbackErrorf)}
+	}
+	w.OutputWriteCloser = w.fileWriter
+	return w
+}
+
+func init() {
+	RegisterEventWriter("file", NewEventWriterFile)
+}