turn 0.1.1

Turn is a distributed resource locking queue system using python and redis.

Turn

Introduction

Turn is a distributed resource locking queue system using python and redis. With it a process thread can request a lock on a shared resource and wait for green light to do its work safely.

Turn comes with a number of tools for inspection of the queues or the pubsub system for one or more resources.

Installation

::

$ pip install turn

Usage

Basic usage goes like this:

import turn
server = turn.Server()

resource = 'my_valuable_resource'
label = 'This shows up in status reports and messages.'

with server.lock(resource=resource, label=label):
    pass  # do your careful work on the resource here

Inspection can be done using the console script:

$ turn status my_valuable_resource
my_valuable_resource                                       5
------------------------------------------------------------
This shows up in status reports and messages.              5

$ turn follow my_valuable_resource
my_valuable_resource: 5 drawn by "This shows up in status reports and messages."
my_valuable_resource: 5 starts
my_valuable_resource: 5 completed by "This shows up in status reports and messages."
my_valuable_resource: 6 can start now

Credits

• Arjan Verkerk started this library

Changelog of turn

0.1.1 (2015-04-23)

• U can use pip now.

0.1 (2015-04-23)

• Initial project structure created with nensskel 1.36.dev0.

• First working version.