ratis-examples/src/test/java/org/apache/ratis/TestMultiRaftGroup.java

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 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
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 * Unless required by applicable law or agreed to in writing, software
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package org.apache.ratis;

import org.apache.ratis.client.RaftClient;
import org.apache.ratis.examples.ParameterizedBaseTest;
import org.apache.ratis.examples.arithmetic.ArithmeticStateMachine;
import org.apache.ratis.examples.arithmetic.TestArithmetic;
import org.apache.ratis.protocol.RaftGroup;
import org.apache.ratis.server.RaftServer;
import org.apache.ratis.server.impl.GroupManagementBaseTest;
import org.apache.ratis.server.impl.MiniRaftCluster;
import org.apache.ratis.util.Slf4jUtils;
import org.apache.ratis.util.function.CheckedBiConsumer;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.slf4j.event.Level;

import java.io.IOException;
import java.util.Collection;
import java.util.concurrent.atomic.AtomicInteger;

public class TestMultiRaftGroup extends BaseTest {
  static {
    Slf4jUtils.setLogLevel(RaftServer.Division.LOG, Level.DEBUG);
  }

  public static Collection<Object[]> data() throws IOException {
    return ParameterizedBaseTest.getMiniRaftClusters(ArithmeticStateMachine.class, 0);
  }

  @ParameterizedTest
  @MethodSource("data")
  public void testMultiRaftGroup(MiniRaftCluster cluster) throws Exception {
    runTestMultiRaftGroup(cluster, 3, 6, 9, 12, 15);
  }

  private void runTestMultiRaftGroup(MiniRaftCluster cluster, int... idIndex) throws Exception {
    runTestMultiRaftGroup(cluster, idIndex, -1);
  }

  private final AtomicInteger start = new AtomicInteger(3);
  private final int count = 10;

  private void runTestMultiRaftGroup(MiniRaftCluster cluster, int[] idIndex, int chosen) throws Exception {

    final CheckedBiConsumer<MiniRaftCluster, RaftGroup, IOException> checker = (c, group) -> {
      try (final RaftClient client = c.createClient(group)) {
        TestArithmetic.runTestPythagorean(client, start.getAndAdd(2*count), count);
      }
    };

    GroupManagementBaseTest.runMultiGroupTest(
        cluster, idIndex, chosen, checker);
  }
}