private void finaliseBuilder()

in src/main/java/org/apache/cassandra/distributed/shared/AbstractBuilder.java [409:452]
41 lines of code
14 McCabe index (conditional complexity)

    private void finaliseBuilder()
    {
        if (finalised)
            return;
        finalised = true;

        boolean log = logTopology();
        if (!racks.isEmpty())
        {
            setRacks();
        }
        else if (nodeIdTopology != null)
        {
            if (nodeIdTopology.size() < nodeCount)
            {
                if (log) System.out.println("Adjusting node count since nodeIdTopology contains fewer nodes");
                nodeCount = nodeIdTopology.size();
            }
            else if (nodeIdTopology.size() > nodeCount)
            {
                if (nodeCount == 0)
                    nodeCount = nodeIdTopology.size();
                else
                if (log) System.out.printf("nodeIdTopology configured for %d nodes while nodeCount is %d%n", nodeIdTopology.size(), nodeCount);
            }
        }
        else
        {
            nodeIdTopology = IntStream.rangeClosed(1, nodeCount).boxed()
                                      .collect(Collectors.toMap(nodeId -> nodeId,
                                                                nodeId -> NetworkTopology.dcAndRack(dcName(0), rackName(0))));
        }

        if (nodeCount <= 0)
            throw new IllegalStateException("Cluster must have at least one node");

        if (log) System.out.println("Node id topology:");
        for (int i = 1; i <= nodeIdTopology.size(); i++)
        {
            NetworkTopology.DcAndRack dcAndRack = nodeIdTopology.get(i);
            if (log) System.out.printf("node %d: dc = %s, rack = %s%n", i, dcAndRack.dc, dcAndRack.rack);
        }
        if (log) System.out.printf("Configured node count: %d, nodeIdTopology size: %d%n", nodeCount, nodeIdTopology.size());
    }