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Cloud Processing Engine (CPE) Decider

What is it ?

This is a generic Decider for AWS SWF. SWF is an Amazon workflow service. To use SWF you need to implement a decider which makes the decisions of "what's next" in your workflow.

This daemon makes these decisions based on a Plan that you write in YAML. This plan defines your workflow and the Decider will follow your plan and will initiate the proper steps in your workflow.

You can use it for your own SWF workflow implementation.

This Decider has been created aspart of a broader project called CPE. The CPE project (https://github.com/sportarchive/CloudProcessingEngine) allows you to process tasks at scale in the Cloud with the use of SWF and SQS.

How to use it ?

You must write your plan. so head to the Decider documentation here for more info: http://sportarchive.github.io/CloudProcessingEngine-Decider

You must understand how SWF works to get going. Read: http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-dev-deciders.html

Install

You will need python installed on your machine.

Then you need to install the dependencies:

sudo ./setup.py install

Then you can run the script:

$> ./decider.py 
usage: decider.py [-h] -d DOMAIN -t TASK_LIST [--plan_name PLAN_NAME]
                  [--plan_version PLAN_VERSION] --plan PLAN
decider.py: error: argument --plan is required

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