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#!/usr/bin/env python
"""Simple looped check over provided file for regex content."""
from __future__ import print_function
import argparse
import os
import subprocess
import sys
import time
class check_result:
success = 0
failure = 1
exception = 2
def check_file(check_string, file_path):
print('Checking for:\n{}'.format(check_string))
for _ in range(0, 10):
try:
subprocess.check_call(
['sudo', 'egrep', check_string, file_path])
print('Log content found. No need to continue.')
return check_result.success
except subprocess.CalledProcessError as e:
if e.returncode == 1:
time.sleep(1)
else:
return check_result.exception
print('Unexpected error with file check.')
return check_result.failure
def raise_if_file_not_found(file_path):
if not os.path.exists(file_path):
raise ValueError('File not found: {}'.format(file_path))
def parse_args(argv=None):
parser = argparse.ArgumentParser(
description='File content check.')
parser.add_argument(
'regex', help='Regex string to check file with.')
parser.add_argument(
'file_path', help='Path to file to check.')
return parser.parse_args(argv)
def main(argv=None):
args = parse_args(argv)
try:
raise_if_file_not_found(args.file_path)
except ValueError as e:
print(e)
sys.exit(check_result.exception)
sys.exit(check_file(args.regex, args.file_path))
if __name__ == '__main__':
sys.exit(main())
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