dynamodb-lock is based on https://github.com/joeabrams026/dynamo-lock, a node.js and dynamodb based locking client. It supports autoexpiring locks, spinning for a lock and manually releasing a lock. It's designed primarily for use in AWS Lambda code, but can be used elsewhere without modification.
It needs better docs, exception handling and testing, but the guts are currently there. Patches welcome!
Forked from: https://github.com/Elethiomel/dynamodb-lock
pip3 install dynamo_lock
from dynamo_lock import LockerClient
lock = Lockerclient('mylocktable')Or with credentials:
lock = LockerClient(
config.DYN_TABLE_NAME,
config.DYN_ACCESS_KEY,
config.DYN_SECRET_KEY
)If necessary, create the lock table.
lock.create_lock_table()Attempt to aquire a lock. Returns True or False if succeeded.
lock_expiry_ms = 1000 # Milliseconds after which the lock expires
lock.acquire('mylock', lock_expiry_ms)Alternatively, spin for a lock if locks are bound to be short lived and you can spare the cpu.
lock.spinlock('mylock', 10)Finally, release your lock
lock.release('mylock', 10)