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python-etcd-lock
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Distributed lock recipe for etcd
Download README (.md)
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Download README
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README.md
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python-etcd-lock
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Download (.md)
## Python Lock library for ETCD 2.0 Since ETCD 0.4, all [the built in modules were removed](https://groups.google.com/d/msg/etcd-dev/ubcPWuL8wSg/7GeaxSHhIb0J), including the locking module. The API still provides an atomic compare-and-swap method to implement locking, thus providing the core functionality to create semaphores and mutexes. This library is built on top of that, matching the API that was in [python-etcd](https://github.com/jplana/python-etcd) before it was removed as much as possible. [](https://circleci.com/gh/appuri/python-etcd-lock) #### Simple Usage ```python import etcd from etcdlock import Lock lock = Lock(etcd.Client(), 'path/to/my/key') while lock # lock is acquired # lock will renew itself by default until released # do work request = .... # check if we still have the lock if lock.is_locked() is False: return ``` #### Explicit Usage ```python import etcd from etcdlock import Lock client = client = etcd.Client(host='api.example.com', protocol='https', port=443, version_prefix='/etcd') lock = Lock(client, 'path/to/my/key', ttl=30, renewSecondsPrior=) if lock.acquire(timeout=20): t = Thread(target=someheavywork) t.run() t.wait() lock.renew() # some other work lock.release() # not recommended, use a context manager else # failed to acquire the lock in 20 seconds pass ``` Please see [the tests](https://github.com/appuri/python-etcd-lock/blob/master/tests/lock_tests.py) while the documentation is lacking, thanks.
