add a python example for cdk for terraform (#214)

Author: HarshCasper

cdk-for-terraform/python/.gitignore

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+dist/
+imports/
+terraform.tfstate*

cdk-for-terraform/python/Pipfile

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+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[requires]
+python_version = "3.9"
+
+[packages]
+constructs = "*"

cdk-for-terraform/python/Pipfile.lock

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+# LocalStack Demo: Deploying Resources via CDK
+
+Simple demo application illustrating deployment of AWS resources using [CDK for Terraform](https://developer.hashicorp.com/terraform/cdktf).
+
+## Prerequisites
+
+* LocalStack
+* Docker
+* [`cdktf`](https://developer.hashicorp.com/terraform/tutorials/cdktf/cdktf-install)
+* [Terraform](https://developer.hashicorp.com/terraform/downloads)
+* [`pipenv`](https://pipenv.pypa.io/en/latest/)
+
+## Install dependencies
+
+To install the dependencies, run the following command:
+
+```bash
+pipenv install
+```
+
+## Generate CDK for Terraform
+
+To generate CDK for Terraform constructs for Terraform providers and modules used in the project, run the following command:
+
+```bash
+cdktf get
+```
+
+To compile and generate Terraform configuration, run the following command:
+
+```bash
+cdktf synth
+```
+
+The above command will create a folder called `cdktf.out` that contains all Terraform JSON configuration that was generated.
+
+## Deploy the stack
+
+To deploy the stack, run the following command:
+
+```bash
+cdktf deploy
+```
+
+## Configuration
+
+LocalStack currently does not provide a wrapper (similar to `cdklocal` or `tflocal`) to run CDK for Terraform. Therefore, you need to configure the AWS `provider` to redirect requests to the LocalStack API (`http://localhost:4566` by default), using [Terraform Override mechanism](https://developer.hashicorp.com/terraform/language/files/override). Check the [`localstack_config.py`](./localstack_config.py) file for an example.

cdk-for-terraform/python/README.md

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+{
+    "language": "python",
+    "app": "pipenv run python main.py",
+    "terraformProviders": [
+      "aws@~> 3.0"
+    ],
+    "terraformModules": [
+      "terraform-aws-modules/vpc/[email protected]"
+    ],
+    "codeMakerOutput": "imports",
+    "projectId": "220c9a67-c870-4548-88db-4880e869b1eb"
+  }

cdk-for-terraform/python/cdktf.json

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+========================================================================================================
+
+Your cdktf Python project is ready!
+
+cat help Prints this message
+
+Compile:
+pipenv run ./main.py Compile and run the python code.
+
+Synthesize:
+cdktf synth Synthesize Terraform resources to cdktf.out/
+
+Diff:
+cdktf diff Perform a diff (terraform plan) for the given stack
+
+Deploy:
+cdktf deploy Deploy the given stack
+
+Destroy:
+cdktf destroy Destroy the given stack
+
+========================================================================================================

cdk-for-terraform/python/help

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+AWS_CONFIG = {
+    "region": "us-east-1",
+    "endpoints": [
+        {
+            "s3": "http://localhost:4566",
+            "sts": "http://localhost:4566",
+            "apigateway": "http://localhost:4566",
+            "apigatewayv2": "http://localhost:4566",
+            "cloudformation": "http://localhost:4566",
+            "cloudwatch": "http://localhost:4566",
+            "dynamodb": "http://localhost:4566",
+            "ec2": "http://localhost:4566",
+            "es": "http://localhost:4566",
+            "elasticache": "http://localhost:4566",
+            "firehose": "http://localhost:4566",
+            "iam": "http://localhost:4566",
+            "kinesis": "http://localhost:4566",
+            "lambda": "http://localhost:4566",
+            "rds": "http://localhost:4566",
+            "redshift": "http://localhost:4566",
+            "route53": "http://localhost:4566",
+            "s3": "http://s3.localhost.localstack.cloud:4566",
+            "secretsmanager": "http://localhost:4566",
+            "ses": "http://localhost:4566",
+            "sns": "http://localhost:4566",
+            "sqs": "http://localhost:4566",
+            "ssm": "http://localhost:4566",
+            "stepfunctions": "http://localhost:4566",
+            "sts": "http://localhost:4566",
+        }
+    ],
+}

cdk-for-terraform/python/localstack_config.py

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+from constructs import Construct
+from cdktf import App, TerraformStack
+from imports.aws.provider import AwsProvider
+from imports.aws.sns_topic import SnsTopic
+from imports.aws.dynamodb_table import DynamodbTable
+from imports.terraform_aws_modules.aws import Vpc
+from localstack_config import AWS_CONFIG
+
+
+class MyStack(TerraformStack):
+    def __init__(self, scope: Construct, ns: str):
+        super().__init__(scope, ns)
+
+        AwsProvider(self, "Aws", **AWS_CONFIG)
+
+        Vpc(
+            self,
+            "CustomVpc",
+            name="custom-vpc",
+            cidr="10.0.0.0/16",
+            azs=["us-east-1a", "us-east-1b"],
+            public_subnets=["10.0.1.0/24", "10.0.2.0/24"],
+        )
+
+        SnsTopic(self, "Topic", display_name="my-first-sns-topic")
+
+        DynamodbTable(
+            self,
+            "DynamoDB",
+            name="my-dynamodb-table",
+            read_capacity=1,
+            write_capacity=1,
+            hash_key="Id",
+            attribute=[
+                {"name": "Id", "type": "S"},
+            ],
+        )
+
+
+app = App()
+MyStack(app, "python-aws")
+
+app.synth()

cdk-for-terraform/python/main.py

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+{
+    "name": "localstack-cdk-for-terraform-python",
+    "scripts": {
+      "reinstall": "rm Pipfile.lock && PIPENV_IGNORE_VIRTUALENVS=1 pipenv install ./../../../dist/python/*.whl",
+      "build": "cdktf get",
+      "synth": "cdktf synth"
+    }
+  }