manhole

import manhole import time import os import sys def main(): print(f"Manhole will listen on /tmp/manhole-{os.getpid()}\n") manhole.install(sigmask=["USR1"], verbose=True) # Install manhole with default settings print("Manhole installed. Waiting for connection...") # Simulate a running application i = 0 while True: print(f"App running... {i}") time.sleep(2) i += 1 if i == 5: # Optionally demonstrate manual activation/deactivation print("Sending USR1 to self to potentially activate/deactivate manhole if configured as 'activate_on'") try: os.kill(os.getpid(), 10) # SIGUSR1 except AttributeError: print("SIGUSR1 not available on this OS, skipping manual signal.") if __name__ == '__main__': import subprocess # Start the application with manhole installed app_process = subprocess.Popen([sys.executable, __file__]) time.sleep(3) # Connect to the manhole using manhole-cli print(f"\nConnecting to manhole-cli for PID: {app_process.pid}...") try: # The `manhole-cli` attempts to connect to /tmp/manhole-<PID> # Note: 'socat readline' provides a better interactive experience. # 'manhole-cli' is simpler for demonstration. subprocess.run(['manhole-cli', str(app_process.pid)], check=True) except FileNotFoundError: print("manhole-cli not found. Please ensure it's installed and in your PATH.") except subprocess.CalledProcessError as e: print(f"manhole-cli failed: {e}") finally: app_process.terminate() app_process.wait() print("\nApplication terminated.")