philiprehberger-lock-run 0.1.4

Prevent duplicate script execution using file-based locking

philiprehberger-lock-run

Prevent duplicate script execution using file-based locking.

Installation

pip install philiprehberger-lock-run

Usage

Context Manager

from philiprehberger_lock_run import lock

with lock("my-job"):
    do_work()

Decorator

from philiprehberger_lock_run import locked

@locked("my-job")
def scheduled_task():
    ...

Timeout

Wait up to 10 seconds for the lock to become available:

with lock("my-job", timeout=10):
    do_work()

Custom Lock Directory

with lock("my-job", lock_dir="/var/lock"):
    do_work()

API

Name	Description
lock(name, *, timeout=0, lock_dir=None)	Context manager that acquires a file lock. Raises LockError on failure.
locked(name, **kwargs)	Decorator that wraps the function body in a file lock.
LockError	Raised when a lock cannot be acquired. Extends RuntimeError.

Development

pip install -e .
python -m pytest tests/ -v

License

MIT