Template file without parameters fails in v2

[kkvinjam]

The resource.paramter_file is passing Null value when there is no parameter file for a given template. The manifest.yaml is inherited from version 1 repo.

This forces the template files to have a parameter.

2021-03-23T23:49:48.883-07:00	parameters = self._load_params_from_file(resource.parameter_file)
2021-03-23T23:49:48.883-07:00	File "/codebuild/output/src377331526/src/manifest/manifest_parser.py", line 373, in _load_params_from_file
2021-03-23T23:49:48.883-07:00	with open(parameter_file, 'r') as content_file:
2021-03-23T23:49:48.883-07:00	IsADirectoryError: [Errno 21] Is a directory: '/codebuild/output/src377331526/src/'

[groverlalit]

One of the properties parameter_files or parameters is required for the pipeline to generate an event with the parameters for the state machine.
We can add this as a feature request to make these properties optional. I think this may add burden on the user to validate the template has default value for all the parameters in the template.

Please give a thumbs up this comment if this feature is applicable to you. Thanks.

[trevorlatson]

We should have the ability to deploy templates using only the default values contained within.

[mcripps9]

Not only that, but we currently have a stack in our manifest that has no parameters, so we'll have to add one just to get it to deploy.

We just went through an exercise to leverage SSM for organization specific parameters so that we can deploy the same customizations package to multiple organizations, and since most of our parameters were organization related, we are increasingly using fewer parameters in the stacks.

[cabjas01]

Updating the manifest version to 2021-03-15 seemed to solve this for us.

[groverlalit]

Thanks @cabjas01 for confirming.
The new manifest version supports deploying StackSet without parameters or parameter_file property.