Move IfConfig.logIfNecessary call into bootstrap (#22455)

This is related to #22116. A logIfNecessary() call makes a call to
NetworkInterface.getInterfaceAddresses() requiring SocketPermission
connect privileges. By moving this to bootstrap the logging call can be
made before installing the SecurityManager.

core/src/main/java/org/elasticsearch/bootstrap/Bootstrap.java

@@ -40,6 +40,7 @@ import org.elasticsearch.common.logging.DeprecationLogger;
 import org.elasticsearch.common.logging.ESLoggerFactory;
 import org.elasticsearch.common.logging.LogConfigurator;
 import org.elasticsearch.common.logging.Loggers;
+import org.elasticsearch.common.network.IfConfig;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.transport.BoundTransportAddress;
 import org.elasticsearch.env.Environment;
@@ -207,6 +208,9 @@ final class Bootstrap {
             throw new BootstrapException(e);
         }
 
+        // Log ifconfig output before SecurityManager is installed
+        IfConfig.logIfNecessary();
+
         // install SM after natives, shutdown hooks, etc.
         try {
             Security.configure(environment, BootstrapSettings.SECURITY_FILTER_BAD_DEFAULTS_SETTING.get(settings));

core/src/main/java/org/elasticsearch/common/network/IfConfig.java

@@ -34,17 +34,17 @@ import java.util.Locale;
 /**
  * Simple class to log {@code ifconfig}-style output at DEBUG logging.
  */
-final class IfConfig {
+public final class IfConfig {
 
     private static final Logger logger = Loggers.getLogger(IfConfig.class);
     private static final String INDENT = "        ";
 
     /** log interface configuration at debug level, if its enabled */
-    static void logIfNecessary() {
+    public static void logIfNecessary() {
         if (logger.isDebugEnabled()) {
             try {
                 doLogging();
-            } catch (IOException | SecurityException e) {
+            } catch (IOException e) {
                 logger.warn("unable to gather network information", e);
             }
         }

core/src/main/java/org/elasticsearch/common/network/NetworkService.java

@@ -90,7 +90,6 @@ public class NetworkService extends AbstractComponent {
 
     public NetworkService(Settings settings, List<CustomNameResolver> customNameResolvers) {
         super(settings);
-        IfConfig.logIfNecessary();
         this.customNameResolvers = customNameResolvers;
     }
 

test/framework/src/main/java/org/elasticsearch/bootstrap/BootstrapForTesting.java

@@ -25,6 +25,7 @@ import org.elasticsearch.SecureSM;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.SuppressForbidden;
 import org.elasticsearch.common.io.PathUtils;
+import org.elasticsearch.common.network.IfConfig;
 import org.elasticsearch.plugins.PluginInfo;
 import org.junit.Assert;
 
@@ -89,6 +90,9 @@ public class BootstrapForTesting {
             throw new RuntimeException("found jar hell in test classpath", e);
         }
 
+        // Log ifconfig output before SecurityManager is installed
+        IfConfig.logIfNecessary();
+
         // install security manager if requested
         if (systemPropertyAsBoolean("tests.security.manager", true)) {
             try {