test/distributed/org/apache/cassandra/distributed/test/ring/AutoBootstrapTest.java

/*
 * 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
 *
 * 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
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package org.apache.cassandra.distributed.test.ring;

import java.util.Map;

import org.junit.Assert;
import org.junit.Test;

import org.apache.cassandra.distributed.Cluster;
import org.apache.cassandra.distributed.api.TokenSupplier;
import org.apache.cassandra.distributed.shared.NetworkTopology;
import org.apache.cassandra.distributed.test.TestBaseImpl;

import static org.apache.cassandra.distributed.api.Feature.GOSSIP;
import static org.apache.cassandra.distributed.api.Feature.NETWORK;
import static org.apache.cassandra.distributed.test.ring.BootstrapTest.count;
import static org.apache.cassandra.distributed.test.ring.BootstrapTest.populate;

public class AutoBootstrapTest extends TestBaseImpl
{
    // Originally part of BootstrapTest. Broken out into separate test as the in-JVM dtests fail
    // if too many instances are created in the same JVM. Bug in the JVM is suspected.
    @Test
    public void autoBootstrapTest() throws Throwable
    {
        int originalNodeCount = 2;
        int expandedNodeCount = originalNodeCount + 1;

        try (Cluster cluster = builder().withNodes(originalNodeCount)
                                        .withTokenSupplier(TokenSupplier.evenlyDistributedTokens(expandedNodeCount))
                                        .withNodeIdTopology(NetworkTopology.singleDcNetworkTopology(expandedNodeCount, "dc0", "rack0"))
                                        .withConfig(config -> config.with(NETWORK, GOSSIP))
                                        .start())
        {
            populate(cluster,0, 100);
            bootstrapAndJoinNode(cluster);

            for (Map.Entry<Integer, Long> e : count(cluster).entrySet())
                Assert.assertEquals("Node " + e.getKey() + " has incorrect row state", e.getValue().longValue(), 100L);
        }
    }
}