cdk-from-cfn

cdk-from-cfn is a command-line tool that converts AWS CloudFormation templates into AWS CDK code. It supports multiple programming languages including TypeScript, Python, Java, Go, and C#.

Installation

cargo install cdk-from-cfn

Usage

cdk-from-cfn [INPUT] [OUTPUT] --language <LANGUAGE> --stack-name <STACK_NAME>

• INPUT is the input file path (STDIN by default).
• OUTPUT is the output file path; if not specified, output will be printed on your command line (STDOUT by default).

Node.js Module Usage

cdk-from-cfn leverages WebAssembly (WASM) bindings to provide a cross-platform npm module, which exposes apis to be used in Node.js projects. Simply take a dependency on cdk-from-cfn in your package.json and utilize it as you would a normal module. i.e.

import * as cdk_from_cfn from 'cdk-from-cfn';

// get supported languages
cdk_from_cfn.supported_languages();

// transmute cfn template into cdk app
cdk_from_cfn.transmute(template, language, stackName)

Language and Feature support

You can enable experimental languages (not enabled by default) by enabling the relevant feature:

$ cargo build --release --features=<feature-name>
Finished release [optimized] target(s) in 0.17s

If you want to disable on-by-default languages, you can pass --no-default-features:

$ cargo build --release --no-default-features --features=golang
Finished release [optimized] target(s) in 0.17s

Implemented

• Fn::FindInMap
• Fn::Join
• Fn::Sub
• Ref
• Fn::And
• Fn::Equals
• Fn::If
• Fn::Not
• Fn::Or
• Fn::GetAtt
• Fn::Base64 support
• Fn::ImportValue support
• Fn::Select support
• Resource ordering based on dependencies
• Conditions are emitted in ts but not attached to resource conditions
• Metadata emission for updates to asgs / lambda functions.
• Emission of outputs / exports
• Fn::GetAZs support
• Adding depends-on, and ordering based on it too.
• Deletion policy
• Fn::Cidr support

Remaining

There are known unsupported features. Working on them in priority order:

• Create policy
• ssm metadata references
• secretsmanager references