logging and instructions

Stack.md

@@ -0,0 +1,68 @@
+# Stack Example Local
+
+You must be running Java 23 or higher. Build the code with: 
+
+```bash
+pushd trex2-lib 
+mvn -DNO_LOGGING=true clean test
+popd
+```
+
+Run jshell with: 
+
+```bash
+jshell --enable-preview --class-path ./trex-locks/target/classes:./trex-locks/target/test-classes:./trex2-lib/target/classes:./trex2-lib/target/test-classes
+```
+
+To exist press Ctrl+d
+
+Inside jshell import the coee then set the logging to what you would like to see and create a two node cluster: 
+
+```
+jshell> import com.github.trex_paxos.*
+
+jshell> StackClusterImpl.setLogLevel(java.util.logging.Level.WARNING)
+
+jshell> var stack = new StackClusterImpl()
+```
+
+You may need to hit enter to see the command prompt come back. 
+
+Now you can do push strings, peek and pop and get back a Response. Define some methods to print the result: 
+
+```
+void push(String x){
+    stack.push(x);
+}
+void peek(){
+    System.out.println(stack.peek().value().get());
+}
+void pop(){
+    System.out.println(stack.pop().value().get());
+}
+```
+
+With that you can: 
+
+```
+jshell> push("hello")
+
+jshell> push("world")
+
+jshell> peek();
+world
+
+jshell> peek();
+world
+
+jshell> pop()
+world
+
+jshell> pop()
+hello
+
+jshell> pop()
+Dec 27, 2024 3:28:17 PM com.github.trex_paxos.StackClusterImpl lambda$new$4
+WARNING: Attempted operation on empty stack
+Stack is empty
+```

trex2-lib/src/test/java/com/github/trex_paxos/StackClusterImpl.java

@@ -1,6 +1,5 @@
 package com.github.trex_paxos;
 
-import com.github.trex_paxos.StackService.Push;
 import com.github.trex_paxos.msg.*;
 import java.io.*;
 import java.util.*;
@@ -12,11 +11,11 @@
 
 public class StackClusterImpl implements StackService {
     private static final Logger LOGGER = Logger.getLogger(StackClusterImpl.class.getName());
-    static {
+    public static void setLogLevel(Level level) {
         Logger root = Logger.getLogger("");
-        root.setLevel(Level.FINEST);
+        root.setLevel(level);
         ConsoleHandler handler = new ConsoleHandler();
-        handler.setLevel(Level.FINEST);
+        handler.setLevel(level);
         root.addHandler(handler);
     }