Enable logging

.gitignore

@@ -3,4 +3,6 @@
 
 # Ignore Gradle build output directory
 build
-/logs/
+
+logs/*.log
+logs/*.log.gz

src/main/tjava/com/r35157/nenjim/hubd/impl/ref/Main.tjava

@@ -2,8 +2,8 @@ package com.r35157.nenjim.hubd.impl.ref;
 
 import com.r35157.nenjim.hubd.ctx.Context;
 import com.r35157.nenjim.hubd.NenjimHub;
-//import org.apache.logging.log4j.LogManager;
-//import org.apache.logging.log4j.Logger;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import java.lang.management.ClassLoadingMXBean;
 import java.lang.management.ManagementFactory;
 
@@ -19,8 +19,9 @@ public class Main {
     }
 
     public Main(String[] args) throws Exception {
-        /*hub = new NenjimHubImpl();
         log.info("Initializing NenjimHub...");
+        try {
+        /*hub = new NenjimHubImpl();
 
         String classesCacheDirRaw = "~/.config/nenjim/cache/classes";
         String classesCacheDir = (classesCacheDirRaw.startsWith("~/"))
@@ -48,8 +49,13 @@ public class Main {
         NenjimKicker kicker = (NenjimKicker)instance;
         */
             //int a = 0;
+        } finally {
+             log.info("NenjimHub shutdown!");
+        }
     }
 
     private void start() {
     }
+
+    private static final Logger log = LoggerFactory.getLogger(Main.class);
 }