old_contents: from flask import Flask
  import logging
  from logging.handlers import RotatingFileHandler
  import os
  
  # construct the application object and apply configurations to the environment
  # setting "instance_relative_config=True" loads the configuration from the 'instance' folder
  app = Flask(__name__, instance_relative_config=True)
  app.config.from_pyfile('config.py')
  
  # set up logging
  app.logger.setLevel(logging.INFO)
  
  # configuration validation
  # make sure that the role specified for this instance is something that is recognized
  valid_roles = ['Injector', 'Processor', 'Terminator']
  if app.config['ROLE'] not in valid_roles:
    raise ValueError("The role specified in the configuration '{}' is not valid - must be one of '{}'".format(app.config['ROLE'], valid_roles))
  
  # create a service log directory if one does not yet exist
  # this is useful if you wish to run multiple services on the same host
  log_directory = "logs/{}".format(app.config['LISTEN_PATH'])
  if not os.path.exists(log_directory):
    os.makedirs(log_directory)
  
  # set up the custom log to record transaction IDs
  log_file = "{}/{}.log".format(log_directory, app.config['LISTEN_PATH'])
  formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(role)s - %(event)s - Trans. ID [%(transaction_id)s] - %(message)s")
  handler = RotatingFileHandler(log_file, maxBytes=10000, backupCount=20)
  handler.setLevel(logging.INFO)
  handler.setFormatter(formatter)
  app.logger.addHandler(handler)
  
  # load routes/views
  from app import views
  
new_contents: from flask import Flask
  import logging
  from logging.handlers import RotatingFileHandler
  import os
  
  # construct the application object and apply configurations to the environment
  # setting "instance_relative_config=True" loads the configuration from the 'instance' folder
  app = Flask(__name__, instance_relative_config=True)
  app.config.from_pyfile('config.py')
  
  # set up logging
  app.logger.setLevel(logging.INFO)
  
  # configuration validation
  # make sure that the role specified for this instance is something that is recognized
  valid_roles = ['Injector', 'Processor', 'Terminator']
  if app.config['ROLE'] not in valid_roles:
    raise ValueError("The role specified in the configuration '{}' is not valid - must be one of '{}'".format(app.config['ROLE'], valid_roles))
  
  # create a service log directory if one does not yet exist
  # this is useful if you wish to run multiple services on the same host
  log_directory = "logs/{}".format(app.config['LISTEN_PATH'])
  if not os.path.exists(log_directory):
    os.makedirs(log_directory)
  
  # set up the custom log to record transaction IDs
  log_file = "{}/{}.log".format(log_directory, app.config['LISTEN_PATH'])
  formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - Role: %(role)s - Event: %(event)s - Trans. ID: [%(transaction_id)s] - %(message)s")
  handler = RotatingFileHandler(log_file, maxBytes=10000, backupCount=20)
  handler.setLevel(logging.INFO)
  handler.setFormatter(formatter)
  app.logger.addHandler(handler)
  
  # load routes/views
  from app import views
  
subject: Enhance Parsing for Logs