how to retrieve aws batch parameter value in python?

Question

Flow :- Dynamo DB --> Lambda --> Batch

If a role arn is inserted in dynamo DB, it is retrieved from lambda event, it is then submitted to batch using submit_job API with role arn being passed as

parameters={
    'role_arn': 'arn:aws:iam::accountid:role/role_name'
}

How to read the parameter value in python running in batch?

Mohan Shanmugam · Accepted Answer · 2018-02-11 08:42:06Z

8

First you need to specify the parameter reference in your docker file or in AWS Batch job definition command like this

/usr/bin/python/pythoninbatch.py Ref::role_arn

In your Python file pythoninbatch.py handle the argument variable using sys package or argparse libray.

sys.argv[1]

answered Feb 11, 2018 at 8:42

Mohan Shanmugam

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2 Comments

Gowtham Chand Over a year ago

Thanks, it worked, I tried adding the argument in job definition and used sys package to retrieve the role_arn.

Vito Over a year ago

Finally, someone makes this very clear. This was not at all obvious to me from the AWS Batch documentation. Thank you!

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