Работа над фильтрацией через libpcap

src/main/java/ru/serega6531/packmate/service/PcapService.java

@@ -1,14 +1,20 @@
 package ru.serega6531.packmate.service;
 
 import lombok.Getter;
+import lombok.extern.slf4j.Slf4j;
 import org.pcap4j.core.PcapNativeException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import ru.serega6531.packmate.model.CtfService;
 import ru.serega6531.packmate.model.enums.SubscriptionMessageType;
 import ru.serega6531.packmate.model.pojo.SubscriptionMessage;
 import ru.serega6531.packmate.pcap.PcapWorker;
 
+import java.util.Collection;
+import java.util.stream.Collectors;
+
 @Service
+@Slf4j
 public class PcapService {
 
     @Getter
@@ -31,4 +37,18 @@ public class PcapService {
         }
     }
 
+    public void updateFilter(Collection<CtfService> services) {
+        final String ports = services.stream()
+                .map(CtfService::getPort)
+                .map(p -> "port " + p)
+                .collect(Collectors.joining(" or "));
+
+        final String format = "(tcp or udp) and (%s)";
+        String filter = String.format(format, ports);
+
+        log.info("New filter: " + filter);
+
+        worker.setFilter(filter);
+    }
+
 }