network_monitor.py

import subprocess
import time
import logging
from datetime import datetime

# Set up logging
logging.basicConfig(filename='network_log.txt', level=logging.INFO,
                    format='%(asctime)s - %(message)s', datefmt='%Y-%m-%d %H:%M:%S')

# File to store outages
OUTAGE_FILE = 'network_outages.txt'


def check_network():
    try:
        # Ping Google's DNS server
        subprocess.check_output(
            ["ping", "-c", "1", "8.8.8.8"], stderr=subprocess.STDOUT, universal_newlines=True)
        return True
    except subprocess.CalledProcessError:
        return False


def write_outage(message):
    with open(OUTAGE_FILE, 'a') as f:
        f.write(f"{datetime.now()} - {message}\n")


def monitor_network():
    previous_state = True
    outage_start = None
    while True:
        current_state = check_network()

        if previous_state and not current_state:
            # Connection lost
            outage_start = datetime.now()
            message = "Network connection lost"
            logging.info(message)
            write_outage(message)
            print(f"{outage_start} - {message}")
        elif not previous_state and current_state:
            # Connection restored
            outage_end = datetime.now()
            duration = outage_end - outage_start
            message = f"Network connection restored. Outage duration: {duration}"
            logging.info(message)
            write_outage(message)
            print(f"{outage_end} - {message}")

        previous_state = current_state
        time.sleep(1)  # Wait for 1 seconds before checking again


if __name__ == "__main__":
    print("Network monitoring started. Press Ctrl+C to stop.")
    print(f"Outages will be logged to {OUTAGE_FILE}")
    try:
        monitor_network()
    except KeyboardInterrupt:
        print("\nMonitoring stopped.")