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internal/audit/retention.go

@@ -0,0 +1,27 @@
+package audit
+
+import (
+	"time"
+
+	"go.uber.org/zap"
+)
+
+// auditRetentionPurgeInterval is how often PurgeExpired runs while the process is up (startup also purges once).
+const auditRetentionPurgeInterval = time.Hour
+
+// StartRetentionLoop periodically purges expired audit rows.
+func StartRetentionLoop(s *Service, logger *zap.Logger) {
+	if s == nil {
+		return
+	}
+	go func() {
+		ticker := time.NewTicker(auditRetentionPurgeInterval)
+		defer ticker.Stop()
+		for range ticker.C {
+			s.PurgeExpired()
+			if logger != nil {
+				logger.Debug("audit retention tick completed")
+			}
+		}
+	}()
+}