improve trace logging

- Add filename for trace logs for read/write operations.

pdb-ui/src/main/java/org/lucares/pdbui/TcpIngestor.java

@@ -322,6 +322,10 @@ public class TcpIngestor implements Ingestor, AutoCloseable, DisposableBean {
 	public TcpIngestor(final PerformanceDb db) {
 		this.db = db;
 	}
+	
+	public PerformanceDb getDb() {
+		return db;
+	}
 
 	@Async
 	@Override