Added the support for command line arguments and improved the logging

Author: amitkumar02

apache-zookeeper/leader-election/src/main/java/com/sts/allprogtutorials/zk/leaderelection/main/LeaderElectionLauncher.java

@@ -23,11 +23,17 @@ public class LeaderElectionLauncher {
 
 	public static void main(String[] args) throws IOException {
 
-		final String zkURL = "10.127.128.56:2181";
+		if(args.length < 2) {
+			System.err.println("Usage: java ");
+			System.exit(2);
+		}
+		
+		final int id = Integer.valueOf(args[0]);
+		final String zkURL = args[1];
 
 		final ExecutorService service = Executors.newSingleThreadExecutor();
 
-		final Future<?> status = service.submit(new ProcessNode(4, zkURL));
+		final Future<?> status = service.submit(new ProcessNode(id, zkURL));
 
 		try {
 			status.get();

apache-zookeeper/leader-election/src/main/java/com/sts/allprogtutorials/zk/leaderelection/nodes/ProcessNode.java

@@ -63,7 +63,9 @@ private void attemptForLeaderPosition() {
 	@Override
 	public void run() {
 
-		System.out.println("Process with id: " + id + " has started!");
+		if(LOG.isInfoEnabled()) {
+			LOG.info("Process with id: " + id + " has started!");
+		}
 
 		final String rootNodePath = zooKeeperService.createNode(LEADER_ELECTION_ROOT_NODE, false, false);
 		if(rootNodePath == null) {

apache-zookeeper/leader-election/src/main/resources/log4j.xml

@@ -9,7 +9,7 @@
 		</layout>
 	</appender>
 
-	<logger name="org.apache.zookeeper.ZooKeeper">
+	<logger name="org.apache.zookeeper">
 		<level value="warn" />
 	</logger>