Create FAKE Nginx Access Log File (for simulation, testing and exercising purposes)

generate_fake_nginx_access_log.py

from datetime import datetime, timedelta
from ipaddress import ip_network
import random

filename = 'fake_access.log'

number_of_lines = 20

ips = list(ip_network('123.25.44.0/28').hosts())
ips += list(ip_network('25.1.4.128/28').hosts())
ips += list(ip_network('13.250.24.0/28').hosts())
ips += list(ip_network('78.21.94.128/28').hosts())

endpoints = ['/api/tasks/', '/api/owners/', '/api/groups/']
uas = ['curl/7.68.0',
       'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:101.0) Gecko/20100101 Firefox/101.0',
       'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.80 Safari/537.36']

http_codes = ['200', '200', '200', '301', '404']

dates = [datetime.now() - timedelta(days=x) for x in range(10)]
random_dates = [random.choice(dates) for d in range(number_of_lines)]
random_dates.sort()


with open(filename, 'w') as f:
    for d in random_dates:
        d = datetime.strftime(d, '%d/%m/%Y:%H:%M:%S')
        f.write(f'{random.choice(ips)} - - [{d}] "POST {random.choice(endpoints)} HTTP/1.1" {random.choice(http_codes)} 162 "-" "{random.choice(uas)}"\n')