refactor away from a log file, stout only.

nord-checker.py

@@ -3,6 +3,7 @@ import subprocess
 import random
 import time
 import datetime
+import requests
 import re
 import sys
 from psql_utils import connect_to_database, update_or_insert_ip
@@ -12,10 +13,11 @@ from openvpn_manager import establish_vpn_connection, is_vpn_active, disconnect_
 # Variables
 CREDENTIAL_FILE = "nord.creds"
 OVPN_DIR = "ovpn_configs/ovpn_tcp"
-LOG_FILE = "openvpn.log"
+LOG_FILE = "openvpn.log"  # This is not used anymore
 RESULT_FILE = "vpnlist.txt"
+PING_URL = "https://health.ext.ben.io/ping/a1a55915-1051-48ed-bd13-ea3f1717a3ee"
 
-# Check for debug flag
+# Define DEBUG_MODE
 DEBUG_MODE = False
 if len(sys.argv) > 1 and sys.argv[1] == "-d":
     DEBUG_MODE = True
@@ -23,29 +25,58 @@ if len(sys.argv) > 1 and sys.argv[1] == "-d":
 def debug_print(message):
     if DEBUG_MODE:
         print(f"{datetime.datetime.now()} + [Debug Mode]:{message}")
-    else:
-        # log_file.write(f"{datetime.datetime.now()} + [Debug Mode]:{message}\n")
-        log_file.flush()  # Flush the buffer to ensure the message is written
 
-# Open the log file in append mode if not in debug mode
-log_file = None  # Define log_file in the global scope
-if not DEBUG_MODE:
-    log_file = open('nord-checker.log', 'a')
-    # Redirect stdout and stderr to the log file
-    sys.stdout = log_file
-    sys.stderr = log_file
+try:
+    requests.get(PING_URL, timeout=10)
+    print(f"{datetime.datetime.now()} [Main Script]: Ping sent to: %s" % PING_URL)
+except requests.RequestException as e:
+    # Log ping failure here...
+    print(f"{datetime.datetime.now()} [Main Script]: Ping failed: %s" % e)
+
+# Function to check if the script is already running
+def is_script_running():
+    """Checks if another instance of the script is already running."""
+    try:
+        # Use pgrep to find processes with the exact command line of the script
+        command_line = f"/usr/bin/python3 {os.path.abspath(__file__)} >> /var/log/nord-checker.log 2>&1"  # Include redirection
+        process = subprocess.run(["pgrep", "-f", command_line], 
+                                 capture_output=True, text=True)
+
+        # If pgrep finds any matches, it means the script is already running
+        if process.returncode == 0 and process.stdout:
+            # Get the PIDs of the running instances
+            pids = [int(pid) for pid in process.stdout.strip().split("\n")]
+
+            # Exclude the current process's PID
+            pids = [pid for pid in pids if pid != os.getpid()]
+
+            # Only quit if there are two or more other instances running
+            if len(pids) >= 2: 
+                for pid in pids:
+                    try:
+                        # Get the CMD value using ps
+                        process_info = subprocess.check_output(["ps", "-o", "cmd=", "-p", str(pid)], text=True).strip()
+                        print(f"{datetime.datetime.now()} [Main Script]: Another instance of the script is already running (PID: {pid}): {process_info}")
+                    except subprocess.CalledProcessError:
+                        print(f"{datetime.datetime.now()} [Main Script]: Another instance of the script is already running (PID: {pid}), but unable to retrieve process information.")
+                return True
+    except Exception as e:
+        print(f"{datetime.datetime.now()} [Main Script]: Error checking for running instances: {e}")
+    return False
+
+
+
 
 # Get current IP before starting (using get_external_ip)
 CURRENT_IP = get_external_ip()
 if CURRENT_IP is None:
     print(f"{datetime.datetime.now()} [Main Script]: Unable to get current IP. Exiting.")
-    if not DEBUG_MODE:
-        log_file.close()  # Close the log file if it was opened
     sys.exit(1)  # Exit if unable to get current IP
 else:
     print(f"{datetime.datetime.now()} [Main Script]: Current IP before VPN connections: {CURRENT_IP}")
-    if not DEBUG_MODE:
-        log_file.flush()
+
+if is_script_running():
+    sys.exit(1)
 
 # Terminate any existing OpenVPN connections
 try:
@@ -54,8 +85,6 @@ try:
     for pid in pids:
         subprocess.run(["kill", pid])
     print(f"{datetime.datetime.now()} [Main Script]: Existing OpenVPN connections terminated.")
-    if not DEBUG_MODE:
-        log_file.flush()
 except subprocess.CalledProcessError:
     pass  # No openvpn process found
 
@@ -123,22 +152,16 @@ for OVPN_FILE in ovpn_files_to_check:
     # Disconnect VPN 
     disconnect_vpn()
     print(f"{datetime.datetime.now()} [{FILE_NUM}/{total_files}] [{OVPN_FILENAME}]: VPN disconnected.")
-    if not DEBUG_MODE:
-        log_file.flush()
+
     # Wait for a random time between 5 and 8 seconds
     sleep_time = random.randint(5, 8)
     print(f"{datetime.datetime.now()} [{FILE_NUM}/{total_files}] [{OVPN_FILENAME}]: Waiting for {sleep_time} seconds before the next connection...")
     time.sleep(sleep_time)
     print(f"{datetime.datetime.now()} [{FILE_NUM}/{total_files}] [{OVPN_FILENAME}]: Resuming...")
-    if not DEBUG_MODE:
-        log_file.flush()
+
     # Increment file number
     FILE_NUM += 1
 
 # Close the database connection
 cursor.close()
 conn.close()
-
-# Close the log file if it was opened
-if not DEBUG_MODE:
-    log_file.close()