TestPartitionsWithZKQuorum.java

/*
   Copyright (c) 2012 LinkedIn Corp.

   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.linkedin.d2.discovery;


import com.linkedin.d2.D2BaseTest;
import com.linkedin.d2.balancer.clients.DynamicClient;
import com.linkedin.d2.balancer.util.LoadBalancerClientCli;
import com.linkedin.d2.balancer.util.LoadBalancerEchoServer;
import com.linkedin.d2.balancer.util.LoadBalancerUtil;
import com.linkedin.d2.discovery.stores.PropertyStoreException;
import com.linkedin.d2.quorum.ZKQuorum;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.AfterTest;
import org.testng.annotations.Test;

import static org.testng.Assert.assertEquals;

@Test (groups = {"d2integration"})
public class TestPartitionsWithZKQuorum extends D2BaseTest
{
  private static final Logger           _log = LoggerFactory.getLogger(TestPartitionsWithZKQuorum.class);

  private List<LoadBalancerEchoServer>  _echoServers;
  private String[]                      _zkHosts;
  private ZKQuorum                      _quorum;
  private LoadBalancerClientCli         _cli;
  private DynamicClient                 _client;
  private String                        _zkUriString;

  private void setup() throws IOException, Exception
  {
    // Start _quorum
    _quorum = new ZKQuorum(QUORUM_SIZE);
    _quorum.startAll();

    _zkUriString = "zk://"+_quorum.getHosts();
    _zkHosts = _quorum.getHosts().split(",");
    _quorum.assertAllPeersUp();
  }

  @AfterMethod
  public void teardownMethod() throws Exception
  {
    teardown();
  }

  @AfterTest
  public void teardownTest() throws Exception
  {
    teardown();
  }

  @Test
  public void testRegisterUnregisterDefaultPartitionEchoServers() throws IOException,
                                                URISyntaxException,
                                                PropertyStoreException,
                                                ExecutionException,
                                                TimeoutException,
                                                InterruptedException,
                                                Exception
  {
    _echoServers = new ArrayList<LoadBalancerEchoServer>();
    setup();
    assertEquals(LoadBalancerClientCli.runDiscovery(_quorum.getHosts(), "/d2", D2_CONFIG_DEFAULT_PARTITION_DATA), 0);
    _cli = new LoadBalancerClientCli(_quorum.getHosts(), "/d2");
    _client = _cli.createZKFSTogglingLBClient(_quorum.getHosts(), "/d2", null);
    // Echo servers startup
    startDefaultPartitionEchoServers();
    assertAllEchoServersRunning(_echoServers);
    assertAllEchoServersRegistered(_cli.getZKClient(), _zkUriString, _echoServers);
    assertQuorumProcessAllRequests(D2_CONFIG_DEFAULT_PARTITION_DATA);

    // Markdown echo servers
    stopAllEchoServers(_echoServers);
    assertAllEchoServersUnregistered(_cli.getZKClient(), _zkUriString, _echoServers);
  }

  @Test
  public void testRegisterUnregisterCustomPartitionEchoServers() throws IOException,
                                                URISyntaxException,
                                                PropertyStoreException,
                                                ExecutionException,
                                                TimeoutException,
                                                InterruptedException,
                                                Exception
  {
    _echoServers = new ArrayList<LoadBalancerEchoServer>();
    setup();
    assertEquals(LoadBalancerClientCli.runDiscovery(_quorum.getHosts(), "/d2", D2_CONFIG_CUSTOM_PARTITION_DATA), 0);
    _cli = new LoadBalancerClientCli(_quorum.getHosts(), "/d2");
    _client = _cli.createZKFSTogglingLBClient(_quorum.getHosts(), "/d2", null);
    // Echo servers startup
    Map<Integer, Double> partitionWeight = new HashMap<Integer, Double>();
    partitionWeight.put(new Integer(1), new Double(1.0d));
    startCustomPartitionEchoServers(partitionWeight);
    assertAllEchoServersRegistered(_cli.getZKClient(), _zkUriString, _echoServers);
    assertQuorumProcessAllRequests(D2_CONFIG_CUSTOM_PARTITION_DATA);

    // Markdown echo servers
    stopAllEchoServers(_echoServers);
    assertAllEchoServersUnregistered(_cli.getZKClient(), _zkUriString, _echoServers);
  }

  @Test
  public void testRegisterUnregisterAllEchoServers() throws IOException,
                                                URISyntaxException,
                                                PropertyStoreException,
                                                ExecutionException,
                                                TimeoutException,
                                                InterruptedException,
                                                Exception
  {
    _echoServers = new ArrayList<LoadBalancerEchoServer>();
    setup();
    assertEquals(LoadBalancerClientCli.runDiscovery(_quorum.getHosts(), "/d2", D2_CONFIG_DATA), 0);
    _cli = new LoadBalancerClientCli(_quorum.getHosts(), "/d2");
    _client = _cli.createZKFSTogglingLBClient(_quorum.getHosts(), "/d2", null);
    // Echo servers startup
    Map<Integer, Double> partitionWeight = new HashMap<Integer, Double>();
    partitionWeight.put(new Integer(1), new Double(1.0d));
    startAllEchoServers(partitionWeight);
    assertAllEchoServersRegistered(_cli.getZKClient(), _zkUriString, _echoServers);
    assertQuorumProcessAllRequests(D2_CONFIG_DATA);

    // Markdown echo servers
    stopAllEchoServers(_echoServers);
    assertAllEchoServersUnregistered(_cli.getZKClient(), _zkUriString, _echoServers);
  }

  private void assertQuorumProcessAllRequests(String clustersData) throws Exception
  {
    assertQuorumProcessAllRequests(1, clustersData, _zkUriString, _cli, _client, null);
  }

  private void startDefaultPartitionEchoServers() throws Exception
  {
    _echoServers.add(startEchoServer(getHost(_zkHosts[0]), getPort(_zkHosts[0]), ECHO_SERVER_HOST, ECHO_SERVER_PORT1_1, "cluster-1", "service-1_1", "service-1_2", "service-1_3" ));
    _echoServers.add(startEchoServer(getHost(_zkHosts[0]), getPort(_zkHosts[0]), ECHO_SERVER_HOST, ECHO_SERVER_PORT1_2, "cluster-1", "service-1_1", "service-1_2", "service-1_3" ));
    _echoServers.add(startEchoServer(getHost(_zkHosts[0]), getPort(_zkHosts[0]), ECHO_SERVER_HOST, ECHO_SERVER_PORT2_1, "cluster-2", "service-2_1", "service-2_2", "service-2_3" ));
    _echoServers.add(startEchoServer(getHost(_zkHosts[0]), getPort(_zkHosts[0]), ECHO_SERVER_HOST, ECHO_SERVER_PORT2_2, "cluster-2", "service-2_1", "service-2_2", "service-2_3" ));
    _echoServers.add(startEchoServer(getHost(_zkHosts[0]), getPort(_zkHosts[0]), ECHO_SERVER_HOST, ECHO_SERVER_PORT3, "cluster-3", "service-3_1", "service-3_2", "service-3_3" ));
  }

  private void startCustomPartitionEchoServers(Map<Integer, Double> partitionWeight) throws Exception
  {
    _echoServers.add(startEchoServer(getHost(_zkHosts[0]), getPort(_zkHosts[0]), ECHO_SERVER_HOST, ECHO_SERVER_PORT4, "cluster-4", partitionWeight, "service-4_11", "service-4_12", "service-4_13" ));
    _echoServers.add(startEchoServer(getHost(_zkHosts[0]), getPort(_zkHosts[0]), ECHO_SERVER_HOST, ECHO_SERVER_PORT5, "cluster-4", partitionWeight, "service-4_11", "service-4_12", "service-4_13" ));
  }

  private void startAllEchoServers(Map<Integer, Double> partitionWeight) throws Exception
  {
    startDefaultPartitionEchoServers();
    startCustomPartitionEchoServers(partitionWeight);
  }

  private void teardown() throws Exception
  {
    try
    {
    _quorum.shutdownAll(true);
    }
    catch (Exception e)
    {
    }
    try
    {
      LoadBalancerUtil.syncShutdownClient(_client, _log);
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
    try
    {
      _cli.shutdown();
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
    try
    {
      stopAllEchoServers(_echoServers);
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
  }
}