python-client

Publishing to PyPI

This package is ready for PyPI. The setup.py uses your README.md as the long description, so your PyPI page will show this documentation.

To publish:

1. Make sure you have build and twine installed:

   pip install --upgrade build twine

2. Build the package:

   python3 -m build

3. Upload to PyPI:

   python3 -m twine upload dist/*

4. Check your package at https://pypi.org/project/lockserver-client/

If you update the README, rebuild and re-upload to update the PyPI description.

lockserver-client (Python)

A Python client SDK for lockserver, a distributed lock server for coordinating access to shared resources.

Install

pip install requests

Usage

from lockserver_client import LockserverClient

client = LockserverClient(
    addr='127.0.0.1:8080',  # or from env LOCKSERVER_ADDR
    owner='worker1',        # or from env LOCKSERVER_OWNER
    secret='your-strong-secret' # or from env LOCKSERVER_SECRET
)

# Blocking acquire
client.acquire('my-resource')
# ... critical section ...
client.release('my-resource')

# Non-blocking acquire
if client.acquire('my-resource', blocking=False):
    # ... critical section ...
    client.release('my-resource')

Example: Multiple workers writing to S3

from lockserver_client import LockserverClient

def upload_to_s3(bucket, file):
    print(f"Uploading {file} to {bucket}...")

client = LockserverClient(owner='worker-123', secret='your-strong-secret')

if client.acquire('s3-upload-lock'):
    try:
        upload_to_s3('my-bucket', 'file.txt')
    finally:
        client.release('s3-upload-lock')

API

LockserverClient(addr=None, owner=None, secret=None)

• addr: lockserver address (default: 127.0.0.1:8080)
• owner: unique owner id (default: default_owner)
• secret: shared secret (default: changeme)

acquire(resource, blocking=True, expire=None)

• Acquires a lock on resource. If blocking is False, returns immediately if lock is held.
• expire (optional): lock expiration in seconds. After this time, the lock is auto-released by the server.
• Returns True (lock acquired) or False (non-blocking, lock not acquired).

release(resource)

• Releases the lock on resource.

License

MIT