Bug51400DUnitTest.java example

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to You 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.
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/**
 * 
 */
package org.apache.geode.internal.cache.partitioned;

import static org.apache.geode.distributed.ConfigurationProperties.*;
import static org.junit.Assert.*;

import java.util.Properties;

import org.junit.Ignore;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.RegionFactory;
import org.apache.geode.cache.RegionShortcut;
import org.apache.geode.cache.client.ClientCacheFactory;
import org.apache.geode.cache.client.ClientRegionFactory;
import org.apache.geode.cache.client.ClientRegionShortcut;
import org.apache.geode.cache.server.CacheServer;
import org.apache.geode.distributed.DistributedSystem;
import org.apache.geode.internal.AvailablePort;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import org.apache.geode.internal.cache.tier.sockets.CacheClientNotifier;
import org.apache.geode.internal.cache.tier.sockets.CacheClientProxy;
import org.apache.geode.internal.cache.tier.sockets.CacheClientProxyStats;
import org.apache.geode.test.dunit.AsyncInvocation;
import org.apache.geode.test.dunit.DistributedTestUtils;
import org.apache.geode.test.dunit.Host;
import org.apache.geode.test.dunit.NetworkUtils;
import org.apache.geode.test.dunit.VM;
import org.apache.geode.test.dunit.internal.JUnit4DistributedTestCase;
import org.apache.geode.test.junit.categories.DistributedTest;

@Category(DistributedTest.class)
public class Bug51400DUnitTest extends JUnit4DistributedTestCase {

  private static VM server0 = null;
  private static VM server1 = null;
  private static VM client0 = null;
  private static VM client1 = null;

  private static GemFireCacheImpl cache;

  public static final String REGION_NAME = "Bug51400DUnitTest_region";

  @Override
  public final void postSetUp() throws Exception {
    Host host = Host.getHost(0);
    server0 = host.getVM(0);
    server1 = host.getVM(1);
    client0 = host.getVM(2);
    client1 = host.getVM(3);
  }

  @Override
  public final void preTearDown() throws Exception {
    closeCache();

    client0.invoke(() -> Bug51400DUnitTest.closeCache());
    client1.invoke(() -> Bug51400DUnitTest.closeCache());

    server0.invoke(() -> Bug51400DUnitTest.closeCache());
    server1.invoke(() -> Bug51400DUnitTest.closeCache());
  }

  public static void closeCache() throws Exception {
    if (cache != null) {
      cache.close();
    }
  }

  public static Integer createServerCache(Integer mcastPort, Integer maxMessageCount)
      throws Exception {
    Properties props = new Properties();
    props.setProperty(LOCATORS, "localhost[" + DistributedTestUtils.getDUnitLocatorPort() + "]");

    Bug51400DUnitTest test = new Bug51400DUnitTest();
    DistributedSystem ds = test.getSystem(props);
    ds.disconnect();
    cache = (GemFireCacheImpl) CacheFactory.create(test.getSystem());
    // cache = (GemFireCacheImpl) new CacheFactory(props).create();

    RegionFactory<String, String> rf = cache.createRegionFactory(RegionShortcut.REPLICATE);

    rf.setConcurrencyChecksEnabled(false);

    Region<String, String> region = rf.create(REGION_NAME);

    CacheServer server = cache.addCacheServer();
    server.setMaximumMessageCount(maxMessageCount);
    server.setPort(AvailablePort.getRandomAvailablePort(AvailablePort.SOCKET));
    server.start();
    return server.getPort();
  }

  public static void createClientCache(String hostName, Integer[] ports, Integer interval)
      throws Exception {
    Properties props = new Properties();

    DistributedSystem ds = new Bug51400DUnitTest().getSystem(props);
    ds.disconnect();
    ClientCacheFactory ccf = new ClientCacheFactory(props);
    ccf.setPoolSubscriptionEnabled(true);
    ccf.setPoolSubscriptionAckInterval(interval);
    for (int port : ports) {
      ccf.addPoolServer(hostName, port);
    }
    cache = (GemFireCacheImpl) ccf.create();

    ClientRegionFactory<String, String> crf =
        cache.createClientRegionFactory(ClientRegionShortcut.CACHING_PROXY);

    Region<String, String> region = crf.create(REGION_NAME);

    region.registerInterest("ALL_KEYS");
  }

  public static void verifyQueueSize(Boolean isPrimary, Integer numOfEvents) throws Exception {
    CacheClientProxyStats stats =
        ((CacheClientProxy) CacheClientNotifier.getInstance().getClientProxies().toArray()[0])
            .getStatistics();

    if (isPrimary) {
      numOfEvents = numOfEvents + 1; // marker
    }
    long qSize = stats.getMessageQueueSize();
    assertEquals("Expected queue size: " + numOfEvents + " but actual size: " + qSize + " at "
        + (isPrimary ? "primary." : "secondary."), numOfEvents.intValue(), qSize);
  }


  @Ignore("ticket51932")
  @Test
  public void testDeadlock() throws Throwable {
    int maxQSize = 5;
    // Set infinite ack interval so that the queue will not be drained.
    int ackInterval = Integer.MAX_VALUE;

    fail("Invoking bad method");
    int port1 = 0;
    // int port1 = (Integer) server0.invoke(() -> Bug51400DUnitTest.createServerCache( maxQSize));

    client1.invoke(Bug51400DUnitTest.class, "createClientCache", new Object[] {
        NetworkUtils.getServerHostName(Host.getHost(0)), new Integer[] {port1}, ackInterval});

    // Do puts from server as well as from client on the same key.
    AsyncInvocation ai1 = server0.invokeAsync(() -> Bug51400DUnitTest.updateKey(2 * maxQSize));
    AsyncInvocation ai2 = client1.invokeAsync(() -> Bug51400DUnitTest.updateKey(2 * maxQSize));
    ai1.getResult();
    ai2.getResult();
    // Verify that the queue has crossed its limit of maxQSize
    server0.invoke(() -> Bug51400DUnitTest.verifyQueueSize(true, 2 * maxQSize));
  }

  public static void updateKey(Integer num) {
    try {
      String k = "51400_KEY";
      Region r = cache.getRegion(REGION_NAME);
      for (int i = 0; i < num; ++i) {
        r.put(k, "VALUE_" + i);
      }
    } catch (Exception e) {
      fail("Failed in updateKey()" + e);
    }
  }

}