aws cloudformation package - allow taking the file from STDIN

[dnagir]

Currently, if we generate a CloudFormation template, we have to store it in a temporary location so that the aws cloudformation package --template-file=path/to/tempfile.

Can we please add an option to accept the template-file from STDIN to allow this flow:

generate_cloudformation | aws cloudformation package

[JordonPhillips]

Seems reasonable, marking as a feature request

[wknapik]

This is a general problem with aws cli. file:// is required in many places and there's no way to make it work without an actual file.

Related pull request #3209.

[rianwouters]

See also #3209 (comment)

[rianwouters]

@wknapik totally agree with you.
To solve this, why not implement a simple fallback in get_paramfile

replacing return data

by

if data is None:
    prefix = 'file://'
    function, kwargs = cases[prefix]
    data = function(prefix, prefix + path, **kwargs)
return data

[justnance]

Thanks for the updates and referencing #3209. @sanathkr, What are you thoughts?

@justnance any update for this features?