Simplified logic in restore method

Signed-off-by: pierantoniomerlino <[email protected]>
eclipse-kura · Oct 12, 2023 · da6d61b · da6d61b
1 parent befb620
commit da6d61b
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/...ipse.kura.linux.net/src/main/java/org/eclipse/kura/linux/net/iptables/IptablesConfig.java b/...ipse.kura.linux.net/src/main/java/org/eclipse/kura/linux/net/iptables/IptablesConfig.java
@@ -628,11 +628,13 @@ private void writeAdditionalRulesToMangleTable(PrintWriter writer) {
      * parsing the iptables configuration file. Only Kura chains are used.
      */
     public void restore() throws KuraException {
-        List<NatPreroutingChainRule> natPreroutingChain = new ArrayList<>();
-        List<NatPostroutingChainRule> natPostroutingChain = new ArrayList<>();
-        List<FilterForwardChainRule> filterForwardChain = new ArrayList<>();
         File iptablesFile = new File(getFirewallConfigFileName());
-        if (iptablesFile.exists()) {
+        if (!iptablesFile.exists()) {
+            return;
+        } else {
+            List<NatPreroutingChainRule> natPreroutingChain = new ArrayList<>();
+            List<NatPostroutingChainRule> natPostroutingChain = new ArrayList<>();
+            List<FilterForwardChainRule> filterForwardChain = new ArrayList<>();
             try (FileReader fr = new FileReader(getFirewallConfigFileName());
                     BufferedReader br = new BufferedReader(fr)) {
                 parseIptablesRules(natPreroutingChain, natPostroutingChain, filterForwardChain, br);