first commit

server/internal/backup/logger.go

@@ -0,0 +1,56 @@
+package backup
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+)
+
+type ExecutionLogger struct {
+	recordID uint
+	hub      *LogHub
+	mu       sync.Mutex
+	buffer   strings.Builder
+}
+
+func NewExecutionLogger(recordID uint, hub *LogHub) *ExecutionLogger {
+	return &ExecutionLogger{recordID: recordID, hub: hub}
+}
+
+func (l *ExecutionLogger) Write(level, message string) {
+	trimmed := strings.TrimSpace(message)
+	if trimmed == "" {
+		return
+	}
+	l.mu.Lock()
+	defer l.mu.Unlock()
+	if l.buffer.Len() > 0 {
+		l.buffer.WriteByte('\n')
+	}
+	l.buffer.WriteString(trimmed)
+	if l.hub != nil {
+		l.hub.Append(l.recordID, level, trimmed)
+	}
+}
+
+func (l *ExecutionLogger) Infof(format string, args ...any) {
+	l.Write("info", fmt.Sprintf(format, args...))
+}
+
+func (l *ExecutionLogger) Errorf(format string, args ...any) {
+	l.Write("error", fmt.Sprintf(format, args...))
+}
+
+func (l *ExecutionLogger) Warnf(format string, args ...any) {
+	l.Write("warn", fmt.Sprintf(format, args...))
+}
+
+func (l *ExecutionLogger) WriteLine(message string) {
+	l.Infof("%s", message)
+}
+
+func (l *ExecutionLogger) String() string {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+	return l.buffer.String()
+}