private static List getTodoList()

in bigtop-manager-server/src/main/java/org/apache/bigtop/manager/server/command/helper/ComponentStageHelper.java [135:181]
38 lines of code
8 McCabe index (conditional complexity)

    private static List<String> getTodoList(List<String> componentNames, List<Command> commands) {
        try {
            List<String> orderedList =
                    StackUtils.DAG.getAllNodesList().isEmpty() ? new ArrayList<>() : StackUtils.DAG.topologicalSort();
            orderedList.replaceAll(String::toUpperCase);
            List<String> componentCommandNames = new ArrayList<>();
            for (String componentName : componentNames) {
                for (Command command : commands) {
                    String name =
                            componentName.toUpperCase() + "-" + command.name().toUpperCase();
                    componentCommandNames.add(name);
                }
            }

            // Re-order the commands, since order.json does not contain all commands,
            // only contains which has dependencies, we need to add the rest to the end.
            if (commands.size() == 1) {
                orderedList.retainAll(componentCommandNames);
                componentCommandNames.removeAll(orderedList);
                orderedList.addAll(componentCommandNames);
                return orderedList;
            } else {
                // TODO, order.json currently only contains start/stop dependencies of major components, the situation
                // of commands size greater than 1 is only with init/start/prepare commands, we see this as a special
                // situation and use special logic for it, should use a better solution in the future.
                orderedList.retainAll(componentCommandNames);
                componentCommandNames.removeAll(orderedList);

                List<String> res = new ArrayList<>();
                List<String> commandOrder = List.of("ADD", "CONFIGURE", "INIT", "START", "PREPARE", "CHECK");
                for (String command : commandOrder) {
                    List<String> filtered = componentCommandNames.stream()
                            .filter(s -> s.endsWith(command))
                            .toList();
                    res.addAll(filtered);
                    if (command.equals("START")) {
                        res.addAll(orderedList);
                    }
                }

                return res;
            }

        } catch (Exception e) {
            throw new ServerException(e);
        }
    }