com.github.nethad.clustermeister.sample.ReadmeExample.java Source code

Introduction

Here is the source code for com.github.nethad.clustermeister.sample.ReadmeExample.java

Source

/*
 * Copyright 2012 The Clustermeister Team.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.nethad.clustermeister.sample;

import com.github.nethad.clustermeister.api.Clustermeister;
import com.github.nethad.clustermeister.api.ExecutorNode;
import com.github.nethad.clustermeister.api.impl.ClustermeisterFactory;
import com.google.common.util.concurrent.ListenableFuture;
import java.io.Serializable;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;

/**
 *
 * @author thomas
 */
public class ReadmeExample {

    public static void main(String... args) {
        Clustermeister clustermeister = null;
        try {
            clustermeister = ClustermeisterFactory.create();
            for (ExecutorNode executorNode : clustermeister.getAllNodes()) {
                ListenableFuture<String> resultFuture = executorNode.execute(new HelloWorldCallable());
                String result = resultFuture.get();
                System.out.println("Node " + executorNode.getID() + ", result: " + result);
            }
        } catch (InterruptedException ex) {
            System.err.println("Exception while waiting for result: " + ex.getMessage());
        } catch (ExecutionException ex) {
            System.err.println("Exception while waiting for result: " + ex.getMessage());
        } finally {
            if (clustermeister != null) {
                clustermeister.shutdown();
            }
        }
    }

    public static class HelloWorldCallable implements Callable<String>, Serializable {

        @Override
        public String call() throws Exception {
            return "Hello world!";
        }

    }

}