class_docstr: Datmo Logging singleton
  
  Good info https://fangpenlin.com/posts/2012/08/26/good-logging-practice-in-python/
code: def find_text_in_logs(text_str):
      results = []
      for logfile in DatmoLogger.get_logfiles():
          with open(logfile, "r") as f:
              for r in grep(text_str, f):
                  results.append(
                      {
                          "file": logfile,
                          "line_number": r[0],
                          "line": r[1],
                      }
                  )
      return results
  
file_path: datmo/datmo/core/util/logger.py
imports: import hashlib
  import logging
  import logging.handlers
  import os
  import tempfile
  import time
  from datmo.core.util.misc_functions import grep
label_desc: Use image node_id 5 for calling the DatmoLogger obj's underlying member method code with example usage: obj.find_text_in_logs(text_str) and returns: results