AWS infrastructure sample with cdktf

main.go

package main

import (
	"encoding/json"
	"github.com/aws/constructs-go/constructs/v10"
	"github.com/aws/jsii-runtime-go"
	"github.com/hashicorp/terraform-cdk-go/cdktf"
	"github.com/jcdan3/cdktf-provider-aws-go"
	"github.com/jcdan3/cdktf-provider-aws-go/iam"
	"github.com/jcdan3/cdktf-provider-aws-go/lambdafunction"
	"io/ioutil"
	"path"
	"runtime"
)

func findCDKTFRootDir() string {
	_, mainFile, _, ok := runtime.Caller(0)
	if !ok {
		panic("could find file")
	}
	return path.Dir(mainFile)
}

func makeIAMRole(stack cdktf.TerraformStack) (iam.IamRole, error) {
	policyFile := path.Join(findCDKTFRootDir(), "policies", "lambda_policy.json")

	file, err := ioutil.ReadFile(policyFile)
	if err != nil {
		return nil, err
	}

	return iam.NewIamRole(stack, jsii.String(roleName), &iam.IamRoleConfig{
		AssumeRolePolicy: jsii.String(string(file)),
		Name:             jsii.String("lambdaExecutionRole"),
	}), nil

}


func NewMyStack(scope constructs.Construct, id string) cdktf.TerraformStack {
	stack := cdktf.NewTerraformStack(scope, &id)

	aws.NewAwsProvider(stack, jsii.String("aws"), &aws.AwsProviderConfig{
		Region: jsii.String("us-west-1"),
	})

	//Creating the role
	lambdaRole, err := makeIAMRole(stack)

	if err != nil{
		return nil
	}
	// here should be compiled binary
	filename := path.Join(findCDKTFRootDir(), "bin", "main.zip")

	// Creating the lambda
	lambdafunction.NewLambdaFunction(stack, jsii.String("Terraform-LambdaFunction"), &lambdafunction.LambdaFunctionConfig{
		FunctionName: jsii.String("Hello-world"),
		Runtime:      jsii.String("go1.x"),
		Handler:      jsii.String("main"),
		Role:	      lambdaRole.Arn(),
		Filename:     &filename,
	})

	return stack
}

func main() {
	app := cdktf.NewApp(nil)

	NewMyStack(app, "CDKTF-tutorial")

	app.Synth()
}