Author Pulumi Packages in YAML

[AaronFriel]

It's possible to create component provider packages in every language except YAML.

To design and implement support for component providers in YAML, we may pursue:

• Supporting running a YAML Program via, or as, a resource plugin

  Perhaps by modifying the pulumi-language-yaml binary to execute in a resource plugin mode as well as the current language plugin mode. This would require changes to pulumi-language-yaml and to the engine.

• Package schema generation for the YAML Program

  Either by direct generation of schema.json or as a consequence of implementing GetSchema for a YAML component provider.

• SDK generation in the Pulumi CLI

  A method for generating SDKs without requiring writing Go programs.

Aspirational goals that the design for the above should not preclude:

• CLI and language plugin support to have a one-command authoring experience to create a package from a YAML program

  To be determined, but ideally there would be an authoring experience as simple as pulumi plugin create --language yaml --dir .. This would require coordination between the engine and the language plugin to support a user experience on par with pulumi convert.

• Enable combining multiple YAML component resources in one package

  Perhaps by enabling a foo.yaml to define a Foo resource, a bar.yaml to define a Bar resource, etc. Each would be a YAML Program, which when hosted by the YAML resource provider shim, combined into a schema that supports Foo, Bar, ... etc. resources.