src/test/java/org/apache/gossip/DataTest.java

package org.apache.gossip;

import java.net.URI;
import java.net.URISyntaxException;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import java.util.concurrent.Callable;
import java.util.concurrent.TimeUnit;

import org.apache.gossip.event.GossipListener;
import org.apache.gossip.event.GossipState;
import org.apache.gossip.model.GossipDataMessage;
import org.junit.Test;

import io.teknek.tunit.TUnit;

public class DataTest {

  @Test
  public void abc() throws InterruptedException, UnknownHostException, URISyntaxException{
    GossipSettings settings = new GossipSettings();
    String cluster = UUID.randomUUID().toString();
    int seedNodes = 1;
    List<GossipMember> startupMembers = new ArrayList<>();
    for (int i = 1; i < seedNodes+1; ++i) {
      URI uri = new URI("udp://" + "127.0.0.1" + ":" + (50000 + i));
      startupMembers.add(new RemoteGossipMember(cluster, uri, i + ""));
    }
    final List<GossipService> clients = new ArrayList<>();
    final int clusterMembers = 2;
    for (int i = 1; i < clusterMembers+1; ++i) {
      URI uri = new URI("udp://" + "127.0.0.1" + ":" + (50000 + i));
      GossipService gossipService = new GossipService(cluster, uri, i + "",
              startupMembers, settings,
              new GossipListener(){
        public void gossipEvent(GossipMember member, GossipState state) {
          System.out.println(member + " " + state);
        }
      });
      clients.add(gossipService);
      gossipService.start();
    }
    TUnit.assertThat(new Callable<Integer> (){
      public Integer call() throws Exception {
        int total = 0;
        for (int i = 0; i < clusterMembers; ++i) {
          total += clients.get(i).get_gossipManager().getLiveMembers().size();
        }
        return total;
      }}).afterWaitingAtMost(20, TimeUnit.SECONDS).isEqualTo(2);
    clients.get(0).gossipData(msg());
    Thread.sleep(10000);
    TUnit.assertThat(
            
            new Callable<Object> (){
              public Object call() throws Exception {
                GossipDataMessage x = clients.get(1).findGossipData(1+"" , "a");
                if (x == null) return "";
                else return x.getPayload();
              }})
            
            
            //() -> clients.get(1).findGossipData(1+"" , "a").getPayload())
    .afterWaitingAtMost(20, TimeUnit.SECONDS)
    .isEqualTo("b");
    for (int i = 0; i < clusterMembers; ++i) {
      clients.get(i).shutdown();
    }
  }
  
  private GossipDataMessage msg(){
    GossipDataMessage g = new GossipDataMessage();
    g.setExpireAt(Long.MAX_VALUE);
    g.setKey("a");
    g.setPayload("b");
    g.setTimestamp(System.currentTimeMillis());
    return g;
  }
}