Added parameter on 1000 response, added MC info cmd and more changes

src/com/mesacarlos/webconsole/websocket/command/CpuUsageCommand.java

@@ -0,0 +1,51 @@
+package com.mesacarlos.webconsole.websocket.command;
+
+import java.lang.management.ManagementFactory;
+
+import javax.management.Attribute;
+import javax.management.AttributeList;
+import javax.management.MBeanServer;
+import javax.management.ObjectName;
+
+import org.java_websocket.WebSocket;
+
+import com.mesacarlos.webconsole.websocket.WSServer;
+import com.mesacarlos.webconsole.websocket.response.CpuUsage;
+
+public class CpuUsageCommand implements WSCommand {
+
+	@Override
+	public void execute(WSServer wsServer, WebSocket conn, String params) {
+		try {
+			double usage = getProcessCpuLoad();
+			wsServer.sendToClient(conn, new CpuUsage("Usage is " + usage + "%", usage));
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+	
+	/**
+	 * Check out usage for the whole system
+	 * Got from https://stackoverflow.com/questions/18489273/how-to-get-percentage-of-cpu-usage-of-os-from-java
+	 * @return CPU Usage for the whole system
+	 * @throws Exception Something went wrong
+	 */
+	public double getProcessCpuLoad() throws Exception {
+		MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
+		ObjectName name = ObjectName.getInstance("java.lang:type=OperatingSystem");
+		AttributeList list = mbs.getAttributes(name, new String[] {"SystemCpuLoad"});
+
+		if (list.isEmpty())
+			return Double.NaN;
+
+		Attribute att = (Attribute) list.get(0);
+		Double value = (Double) att.getValue();
+
+		// usually takes a couple of seconds before we get real values
+		if (value == -1.0)
+			return Double.NaN;
+		// returns a percentage value with 1 decimal point precision
+		return ((int) (value * 1000) / 10.0);
+	}
+
+}