Nanocloud simple example

Nanocloud simple example.txt

<dependency>
    <groupId>org.gridkit.lab</groupId>
    <artifactId>nanocloud</artifactId>
    <version>0.8.8</version>
</dependency>
<dependency>
    <groupId>org.gridkit.lab</groupId>
    <artifactId>telecontrol-ssh</artifactId>
    <version>0.8.8</version>
</dependency>


import org.gridkit.nanocloud.Cloud;
import org.gridkit.nanocloud.CloudFactory;
import org.gridkit.nanocloud.RemoteNode;
import org.gridkit.vicluster.ViNode;

import java.lang.management.ManagementFactory;
import java.util.concurrent.Callable;

public class FirstNanoCloud {

    public static void main(String[] args) throws InterruptedException {
        Cloud cloud = CloudFactory.createCloud();
        try {
            ViNode allNodes = cloud.node("master");
            allNodes.x(RemoteNode.REMOTE).useSimpleRemoting();
            allNodes.x(RemoteNode.REMOTE).setHostsConfigFile("?na");
            allNodes.x(RemoteNode.REMOTE).setRemoteAccount("root");
            allNodes.x(RemoteNode.REMOTE).setPassword("password");
            allNodes.x(RemoteNode.REMOTE).setRemoteHost("myremotehost" + ":" + 22);

            allNodes.touch();
            saluteToCaesar(allNodes);
            reportMemory(allNodes);
            Thread.sleep(10_000l);
        } finally {
            if (cloud != null) {
                cloud.shutdown();
            }
        }
    }

    private static void saluteToCaesar(ViNode node) {
        node.exec(new Callable<Void>() {
            @Override
            public Void call() throws Exception {
                String jvmName = ManagementFactory.getRuntimeMXBean().getName();
                System.out.println("'" + jvmName + "' salute you, Caesar!");
                return null;
            }
        });
    }

    private static void reportMemory(ViNode node) {
        node.exec(new Callable<Void>() {
            @Override
            public Void call() throws Exception {
                String jvmName = ManagementFactory.getRuntimeMXBean().getName();
                long totalMemory = Runtime.getRuntime().maxMemory();
                System.out.println("My name is '" + jvmName + "'. Memory limit is " + (totalMemory >> 20) + "MiB");
                return null;
            }
        });
    }

}