Pass parameters to CfnInclude

Allow passing parameters to template included via CfnInclude.

Use Case

It would be nice to be able to reuse existing templates (from quickstarts for example) that rely on parameters being passed to them.

Proposed Solution

Not really sure but my workaround is to remove the parameters and hardcode them.

Perhaps CfnInclude could have a prop for CfnParameters?

Other

Reference example of importing an existing template. Imagine the template has parameters. The drupal quickstart is an example of a quickstart with many parameters.

import cdk = require("@aws-cdk/core");
import fs = require("fs");

new cdk.CfnInclude(this, "ExistingInfrastructure", {
  template: JSON.parse(fs.readFileSync("my-template.json").toString())
});

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

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This is a 🚀 Feature Request

[cmckni3]

cdk-dasm is helpful as well

[joekiller]

When using CfInclude nothing is stopping you from using parameters in that stack. You can even use cdk parameters and then import. As long as the ID is aligned it’ll work. I did something similar here:

https://gist.github.com/joekiller/36f28eeffeeb50d3c0f4373c3d372d9e

Note to parse and then include the stack I had to make the yaml “clean” ie no bang (!Ref) functions. Use Fn::Ref instead. Your yaml module may vary (YYMMV)