How do I run my CDK app?

How do I run my CDK app?

I created and built a new CDK project:

mkdir myproj cd myproj cdk init --language typescript npm run build

If I try to run the resulting javascript, I see the following:

PS C:reposmyproj> node .binmyproj.js CloudExecutable/1.0 Usage: C:reposmyprojbinmyproj.js REQUEST REQUEST is a JSON-encoded request object.

What is the right way to run my app?

2 Answers
2

You don't need to run your CDK programs directly, but rather use the CDK Toolkit instead.

To synthesize an AWS CloudFormation from your app:

cdk synth --app "node .binmyproj.js"

To avoid re-typing the --app switch every time, you can setup a cdk.json file with:

--app

cdk.json

{ "app": "node .appmyproj.js" }

You can also use the toolkit to deploy your app into an AWS environment:

cdk deploy

Or list all the stacks in your app:

cdk ls

The CDK application expects a request to be provided as a positional CLI argument when you're using the low-level API (aka running the app directly), for example:

node .binmyproj.js '{"type":"list"}'

It can also be passed as a Base64-encoded blob instead (that can make quoting the JSON less painful in a number of cases) - the Base64 needs to be prefixed with base64: in this case.

base64:

node .binmyproj.js base64:eyAidHlwZSI6ICJsaXN0IiB9Cg==

In order to determine what are the APIs that are available, and what arguments they expect, you can refer to the @aws-cdk/cx-api specification.

@aws-cdk/cx-api

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