rmuir commented on code in PR #11852:
URL: https://github.com/apache/lucene/pull/11852#discussion_r996313951


##########
lucene/luke/src/java/org/apache/lucene/luke/app/web/LukeWebMain.java:
##########
@@ -17,31 +17,78 @@
 
 package org.apache.lucene.luke.app.web;
 
+import java.net.InetSocketAddress;
 import java.util.concurrent.CountDownLatch;
+import java.util.HashMap;
+import java.util.Map;
 import org.apache.lucene.luke.app.IndexHandler;
 import org.apache.lucene.luke.util.LoggerFactory;
 
 /** Entry class for web Luke */
-public class LukeWebMain {
+public final class LukeWebMain {
+
+  private LukeWebMain() {
+  }
 
   static {
     LoggerFactory.initGuiLogging();
   }
 
   public static void main(String[] args) throws Exception {
-    String index = null;
-    if (args.length == 2 && args[0].equals("--index")) {
-      index = args[1];
-    } else {
-      System.err.println("usage: LukeWebMain --index <path-to-index>");
-      Runtime.getRuntime().exit(1);
+    Map<String, Object> parsed = null;
+    try {
+      parsed = parseArgs(args);
+    } catch (Exception e) {
+      usage(e.getMessage());
     }
-
     IndexHandler indexHandler = IndexHandler.getInstance();
-    indexHandler.open(index, "org.apache.lucene.store.FSDirectory", true, 
true, false);
+    indexHandler.open(getIndex(parsed), "org.apache.lucene.store.FSDirectory", 
true, true, false);
     CountDownLatch tombstone = new CountDownLatch(1);
-    HttpService httpService = new HttpService(indexHandler, tombstone);
+    HttpService httpService = new HttpService(getSockAddr(parsed), 
indexHandler, tombstone);
     httpService.start();
     tombstone.await();
   }
+
+  private static String getIndex(Map<String, Object> args) {
+    String index = (String) args.get("index");
+    if (index == null) {
+      usage("index arg is required");
+    }
+    return index;
+  }
+
+  private static InetSocketAddress getSockAddr(Map<String, Object> args) {
+    String host = (String) args.get("host");
+    int port = (Integer) args.getOrDefault("port", 8080);
+    if (host == null) {
+      return new InetSocketAddress(port);

Review Comment:
   Well, I am not sure we want the security hassles... I guess if u want to do 
this, fine, but we'll just require the security to be on the level before 
merging. Seems easier to restrict to localhost to avoid this shit and save us 
the trouble. 



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