Raise MessageException when using data provider on incompatible data

import abc

import itertools

import logging

import math

import os

import random

from galaxy.visualization.data_providers.basic import BaseDataProvider

from galaxy.visualization.data_providers.cigar import get_ref_based_read_seq_and_cigar

log = logging.getLogger(__name__)

IntWebParam = Union[str, int]

#

        start, end = int(start), int(end)

        with self.open_data_file() as data_file:

            iterator = self.get_iterator(data_file, chrom, start, end, **kwargs)

            try:

                data = self.process_data(iterator, start_val, max_vals, start=start, end=end, **kwargs)

            except ValueError as e:

                err_msg = f"Could not return data, error was '{e}'"

                log.warning(err_msg, exc_info=True)

                raise MessageException(err_msg)

        return data

    def get_genome_data(self, chroms_info, **kwargs):