By default, the leader server listens on localhost (127.0.0.1) at port 65432, and follower servers listen on ports 65433 and 65434. You can modify these settings in the main.py script if needed.
To start the Distributed Lock System, run the main.py script:
python main.py
This will start one leader server and two follower servers. It will also create multiple clients that will attempt to acquire, release, and check locks.
To interact with the system programmatically, you can create instances of LockClient from the client.py module:
from client import LockClient
# Initialize a client with the server's host and port
client = LockClient(server_host='127.0.0.1', server_port=65432)
# Preempt (acquire) a lock
response = client.preempt_lock('my_lock')
print(response)
# Release a lock
response = client.release_lock('my_lock')
print(response)
# Check the status of a lock
response = client.check_lock('my_lock')
print(response)
While the main.py script will start the servers automatically, you can also run server instances manually using the server.py module:
from server import LockServer
# Start a leader server
leader_server = LockServer(host='127.0.0.1', port=65432, is_leader=True)
leader_server.start()
# Start a follower server
follower_server = LockServer(host='127.0.0.1', port=65433, is_leader=False)
follower_server.start()
Make sure to run each server in a separate process or thread.
To stop the servers and clients, use a keyboard interrupt (Ctrl+C) in the terminal where main.py is running.