chore: add logparser logic for agent and add parsed log to clickhouse

agent/internal/logsource/file/impl.go

@@ -0,0 +1,45 @@
+package file
+
+import (
+	"errors"
+	"os"
+
+	"gitea.d3m0k1d.ru/d3m0k1d/HellreigN/agent/internal/logsource"
+	"github.com/hpcloud/tail"
+)
+
+var _ logsource.LogSource = new(FileLogSource)
+
+type FileLogSource struct {
+	*tail.Tail
+}
+
+func New(filepath string) (fls *FileLogSource, err error) {
+	if _, err := os.Stat(filepath); os.IsNotExist(err) {
+		if err := os.WriteFile(filepath, []byte{}, 0600); err != nil {
+			return nil, err
+		}
+	}
+	t, err := tail.TailFile(filepath, tail.Config{
+		Follow: true,
+		Location: &tail.SeekInfo{
+			Offset: 100,
+			Whence: 2,
+		},
+	})
+	if err != nil {
+		return
+	}
+	return &FileLogSource{t}, nil
+}
+func (f *FileLogSource) ReadLine() (string, error) {
+	select {
+	case <-f.Dead():
+		return "", errors.Join(logsource.ErrDead, f.Err())
+	case line := <-f.Lines:
+		return line.Text, line.Err
+	}
+}
+func (f *FileLogSource) Close() error {
+	return f.Stop()
+}