public final T build()

in benchmark-java/src/main/java/org/apache/pekko/grpc/benchmarks/qps/AbstractConfigurationBuilder.java [104:142]

32 lines of code
9 McCabe index (conditional complexity)


  public final T build(String[] args) {
    T config = newConfiguration();
    Map<String, Param> paramMap = getParamMap();
    Set<String> appliedParams = new TreeSet<String>(CASE_INSENSITIVE_ORDER);

    for (String arg : args) {
      if (!arg.startsWith("--")) {
        throw new IllegalArgumentException("All arguments must start with '--': " + arg);
      }
      String[] pair = arg.substring(2).split("=", 2);
      String key = pair[0];
      String value = "";
      if (pair.length == 2) {
        value = pair[1];
      }

      // If help was requested, just throw now to print out the usage.
      if (HELP.getName().equalsIgnoreCase(key)) {
        throw new IllegalArgumentException("Help requested");
      }

      Param param = paramMap.get(key);
      if (param == null) {
        throw new IllegalArgumentException("Unsupported argument: " + key);
      }
      param.setValue(config, value);
      appliedParams.add(key);
    }

    // Ensure that all required options have been provided.
    for (Param param : getParams()) {
      if (param.isRequired() && !appliedParams.contains(param.getName())) {
        throw new IllegalArgumentException("Missing required option '--"
            + param.getName() + "'.");
      }
    }

    return build0(config);
  }