TestNMReconnect.java example

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hadoop-on-lustre2-master
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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 *
 *     http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.hadoop.yarn.server.resourcemanager.resourcetracker;

import junit.framework.Assert;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.records.NodeId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.event.Dispatcher;
import org.apache.hadoop.yarn.event.EventHandler;
import org.apache.hadoop.yarn.event.InlineDispatcher;
import org.apache.hadoop.yarn.factories.RecordFactory;
import org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider;
import org.apache.hadoop.yarn.server.api.protocolrecords.RegisterNodeManagerRequest;
import org.apache.hadoop.yarn.server.resourcemanager.NMLivelinessMonitor;
import org.apache.hadoop.yarn.server.resourcemanager.NodesListManager;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.RMContextImpl;
import org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.NodeEventDispatcher;
import org.apache.hadoop.yarn.server.resourcemanager.ResourceTrackerService;
import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeEvent;
import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeEventType;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.SchedulerEventType;
import org.apache.hadoop.yarn.server.resourcemanager.security.NMTokenSecretManagerInRM;
import org.apache.hadoop.yarn.server.resourcemanager.security.RMContainerTokenSecretManager;
import org.apache.hadoop.yarn.server.utils.BuilderUtils;
import org.junit.Before;
import org.junit.Test;

public class TestNMReconnect {
  private static final RecordFactory recordFactory = 
      RecordFactoryProvider.getRecordFactory(null);

  private RMNodeEvent rmNodeEvent = null;

  private class TestRMNodeEventDispatcher implements
      EventHandler<RMNodeEvent> {

    @Override
    public void handle(RMNodeEvent event) {
      rmNodeEvent = event;
    }

  }

  ResourceTrackerService resourceTrackerService;

  @Before
  public void setUp() {
    Configuration conf = new Configuration();
    // Dispatcher that processes events inline
    Dispatcher dispatcher = new InlineDispatcher();

    dispatcher.register(RMNodeEventType.class,
        new TestRMNodeEventDispatcher());

    RMContext context = new RMContextImpl(dispatcher, null,
        null, null, null, null, null, null, null, null);
    dispatcher.register(SchedulerEventType.class,
        new InlineDispatcher.EmptyEventHandler());
    dispatcher.register(RMNodeEventType.class,
        new NodeEventDispatcher(context));
    NMLivelinessMonitor nmLivelinessMonitor = new NMLivelinessMonitor(
        dispatcher);
    nmLivelinessMonitor.init(conf);
    nmLivelinessMonitor.start();
    NodesListManager nodesListManager = new NodesListManager(context);
    nodesListManager.init(conf);
    RMContainerTokenSecretManager containerTokenSecretManager =
        new RMContainerTokenSecretManager(conf);
    containerTokenSecretManager.start();
    NMTokenSecretManagerInRM nmTokenSecretManager =
        new NMTokenSecretManagerInRM(conf);
    nmTokenSecretManager.start();
    resourceTrackerService = new ResourceTrackerService(context,
        nodesListManager, nmLivelinessMonitor, containerTokenSecretManager,
        nmTokenSecretManager);
    
    resourceTrackerService.init(conf);
    resourceTrackerService.start();
  }

  @Test
  public void testReconnect() throws Exception {
    String hostname1 = "localhost1";
    Resource capability = BuilderUtils.newResource(1024, 1);

    RegisterNodeManagerRequest request1 = recordFactory
        .newRecordInstance(RegisterNodeManagerRequest.class);
    NodeId nodeId1 = NodeId.newInstance(hostname1, 0);
    request1.setNodeId(nodeId1);
    request1.setHttpPort(0);
    request1.setResource(capability);
    resourceTrackerService.registerNodeManager(request1);

    Assert.assertEquals(RMNodeEventType.STARTED, rmNodeEvent.getType());

    rmNodeEvent = null;
    resourceTrackerService.registerNodeManager(request1);
    Assert.assertEquals(RMNodeEventType.RECONNECTED, rmNodeEvent.getType());

    rmNodeEvent = null;
    resourceTrackerService.registerNodeManager(request1);
    capability = BuilderUtils.newResource(1024, 2);
    request1.setResource(capability);
    Assert.assertEquals(RMNodeEventType.RECONNECTED, rmNodeEvent.getType());
  }
}