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Pure Python wrapper for elock distributed locking server.

Project description


Pure Python wrapper for .

elock is "A simple, fault-tolerant distributed lock server in erlang." Using
it in Python allows you to do all sorts of cool stuff, like ensuring a Celery
task doesn't run more than once simultaneously, even across different Celery

Note, if you are already using Twisted in your project, you should check out
dustin's wrapper at .


Simple single lock:

with pyelock.ELockSingle(('', 11400), 'my_lock'):
# Do some stuff
except pyelock.LockInUse:
print "Can't do stuff, my_lock is in use"

If you want precise control over your locking behavior, or want to acquire
multiple locks, use the following code:

with pyelock.ELock(('', 11400)) as elock:
# Acquire a lock, waiting up to 30 seconds for it
if not elock.lock('my_lock', timeout=30.0):
print "Oh no, can't get my_lock"

# Acquire another lock, without waiting if it's locked
if not elock.lock('my_other_lock'):
print "Can't get my_other_lock"

# Do some stuff...

# Release first lock

# Do some other stuff...

# Note: you don't technically need to release locks right before the end
# of the 'with' block, since all locks held will be automatically released
# when the object is destroyed.

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