Terraform + Cloudformation Working Sample

delete.sh

#!/bin/bash
set -e
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

DEFAULT_ENVNAME="BCX$(whoami | awk '{ print toupper($0) }')"
BC_ENVNAME=${BC_ENVNAME:-$DEFAULT_ENVNAME}

BC_DISTBKT=$(aws cloudformation list-exports --query "Exports[?Name=='BC::${BC_ENVNAME}::DISTBKT'].Value" --output=text)
BC_DISTBKT_URL="s3://${BC_DISTBKT}/"

echo "Emptying $BC_DISTBKT_URL"
aws s3 rm "$BC_DISTBKT_URL" --recursive

echo "Destroying"
pushd "$DIR"
terraform destroy -auto-approve
popd

echo "Done"

redeploy.sh

#!/bin/bash
#
# Deploys a storage tier
set -e
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

DEFAULT_ENVNAME="BCX$(whoami | awk '{ print toupper($0) }')"
BC_ENVNAME=${BC_ENVNAME:-$DEFAULT_ENVNAME}

echo "Deploying storage for environment $BC_ENVNAME ..."
sleep 3

echo "Deploying storage"
pushd "$DIR"
terraform init -upgrade
terraform apply -var="env_name=$BC_ENVNAME" -auto-approve
popd

echo "Storage deployed"

storage.tf

terraform {
  required_providers {
    aws = {
      version = "~> 3.0"
    }
  }
}

provider "aws" {
  region  = "us-west-2"
}

variable "env_name" {
  type    = string
  default = "tfenv"
}

resource "aws_cloudformation_stack" "bcstorage" {
  name = "${var.env_name}-STORAGE"

  parameters = {
    EnvName = var.env_name
  }

  template_body = file("${path.module}/storage.yaml")
}

storage.yaml

Description:  Sample for storage of artifacts in different services

Parameters:
  EnvName:
    Description: An environment name that is prefixed to resource names
    Type: String
    Default: DEVENV

Resources:
  ArtifactsBucket:
    Type: 'AWS::S3::Bucket'
    DeletionPolicy: Retain
    Properties:
      PublicAccessBlockConfiguration:
        BlockPublicAcls: true
        BlockPublicPolicy: true
        IgnorePublicAcls: true
        RestrictPublicBuckets: true

  ContainerRepository: 
    Type: 'AWS::ECR::Repository'
  
  ContainerFS:
    Type: 'AWS::EFS::FileSystem'

Outputs:
  ArtifactsBucketName:
    Value: !Ref ArtifactsBucket
    Export:
      Name: !Sub "BC::${EnvName}::DISTBKT"
      
  ContainerRepositoryName:
    Value: !Ref ContainerRepository
    Export:
      Name: !Sub "BC::${EnvName}::ECR"

  ContainerFSId:
    Value: !Ref ContainerFS
    Export:
      Name: !Sub "BC::${EnvName}::EFS"
      
  ContainerFSArn:
    Value: !GetAtt ContainerFS.Arn
    Export:
      Name: !Sub "BC::${EnvName}::EFSARN"

# Cheat Sheet

# Deploy using CloudFormation
# export ENV_NAME="CFN1" 
# aws cloudformation deploy --template-file storage.yaml --stack-name "${ENV_NAME}-STORAGE" --parameter-overrides "EnvName=$ENV_NAME"