public static T checkNotNull()

in hadoop-api-shim/src/main/java/org/apache/hadoop/fs/shim/impl/Preconditions.java [138:157]

• 14 lines of code
• 3 McCabe index (conditional complexity)

  public static <T> T checkNotNull(final T obj,
      final Supplier<String> msgSupplier) {
    if (obj == null) {
      String msg;
      try {
        // note that we can get NPE evaluating the message itself;
        // but we do not want this to override the actual NPE.
        msg = msgSupplier.get();
      } catch (Exception e) {
        // ideally we want to log the error to capture. This may cause log files
        // to bloat. On the other hand, swallowing the exception may hide a bug
        // in the caller. Debug level is a good compromise between the two
        // concerns.
        LOG.debug("Error formatting message", e);
        msg = VALIDATE_IS_NOT_NULL_EX_MESSAGE;
      }
      throw new NullPointerException(msg);
    }
    return obj;
  }