well-architected-constructs 0.1.2

CDK constructs based on the Well Architected Framework

Well Architected

Python Well-Architected CDK Patterns from https://cdkpatterns.com/patterns/well-architected/

Available Constructs

• Api
• ApiLambda
• ApiLambdaDynamodb
• DynamodbTable
• HttpApiStepFunctions
• LambdaFunction
• RestApi
• RestApiSns
• SnsLambda
• WebApplicationFirewall

Examples

Creating a Stack using Well Architected Constructs

import constructs
import well_architected_constructs.web_application_firewall
import well_architected_constructs.api_lambda_dynamodb

import well_architected_stack


class WafApiLambdaDynamodb(well_architected_stack.Stack):

    def __init__(
        self, scope: constructs.Construct, id: str,
        partition_key='path',
        sort_key=None,
        **kwargs
    ):
        super().__init__(scope, id, **kwargs)
        self.name = self.camel_to_snake(id)
        self.api_lambda_dynamodb = well_architected_constructs.api_lambda_dynamodb.ApiLambdaDynamodbConstruct(
            self, 'ApiLambdaDynamoDb',
            function_name=self.name,
            partition_key=partition_key,
            error_topic=self.error_topic,
        )

        self.web_application_firewall = well_architected_constructs.web_application_firewall.WebApplicationFirewall(
            self, 'WebApplicationFirewall',
            error_topic=self.error_topic,
            target_arn= f"arn:aws:apigateway:region::/restapis/{self.api_lambda_dynamodb.rest_api.api_id}/stages/{self.api_lambda_dynamodb.rest_api.api.deployment_stage.stage_name}",
        )

    @staticmethod
    def camel_to_snake(text):
        return ''.join([
            '_'+character.lower()
            if character.isupper()
            else character
            for character in text
        ]).lstrip('_')