simplify-codegendeprecated

Simplify Code Generator from OpenAPI 3.0 Specs

Usage no npm install needed!

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  import simplifyCodegen from 'https://cdn.skypack.dev/simplify-codegen';
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README

Simplify Framework - OpenAPI RESTful Based Serverless

This REST API model has moved to npm install simplify-openapi -g from version 0.1.9. With new branch of GraphQL Serverless Model at npm install simplify-graphql -g

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Initial code based on openapi-codegen

Node.js-based codegen for OpenAPI specs. This project was initially by tailoring from openapi-codegen to use the core code generation functionality to generate the lambda based node projects and AWS CloudFormation stack. There was many tailored code to become a powerful tool nowaday. Thanks to the initial openapi-codegen project that has saved time for developing an initial idea.

Divided code capability:

  • Nano function: per individual method (/path/rc: GET) as a lambda function
  • Micro function: per some methods (/path/ac: POST, PUT) as a lambda function
  • Kilo function: per some resources (/path/rc, /path/ac) as a lambda function
  • Mono application: as an application running on a docker-compose service

Deployment mode capability:

  • BlueGreen deployment: run latest version as Blue stage or stable version as Green stage
  • Enforcement deployment: specify to run a custom enforcement version (e.g maintenance package mode)
  • Canary deployment: run one of [latest,stable,enforce] version on-request by x-canary-selection HTTP header

Software development facility:

  • Production ready code skeleton (sanitizer, unit tests, api tests, coverage)
  • Controllable logging verbosity (INFO, WARN, DEBUG, ERROR) using debug package
  • Local and independant development code run (http://localhost:3000) by node express

Install from published NPM packages

  • npm install -g simplify-openapi

Install codegen from github sourcode, link to dependancy system

  • git clone https://github.com/simplify-framework/openapi.git
  • cd openapi && npm install && npm link

Generate Open API specs sample for pets:

  • mkdir pets-project to create project folder for pets
  • cd pets-project && npm link simplify-openapi if you install from github
  • simplify-openapi template -i petsample to create a petsample OpenAPI 3.0 specs
  • simplify-openapi template -i othername to create a othername OpenAPI 3.0 specs

Generate project using command line:

  • simplify-openapi -i openapi.yaml to generate code in the current folder
  • simplify-openapi -i openapi.yaml -o other-folder to specify another folder

Setup AWS configuration profile

  • Create a deployment user in IAM: simplify-user
  • Setup IAM Role Policy using: policy-deployment.json
  • Setup IAM Role Policy using: policy-execute-api.json
  • Configure your machine aws configure --profile simplify-eu

You are in the pets project directory

  • npm install to install project dependancies and tools
  • npm run stack-deploy to provision code containers (AWS Lambda empty functions)
  • npm run push-code to deploy and run code as declared in .env variables (ENV_*)
    • ENV_functionName_DEPLOYMENT_STAGE=(latest|stable|enfoce|canary) to setup running mode
    • ENV_functionName_ENFORCEMENT_PACKAGE=specific-package-name-with-version (enforce mode only)
  • npm run stack-destroy to provision code containers (AWS Lambda empty functions)

Microservices architecture in AWS:

  • AWS API Gateway REST API
    • AWS Lambda function (service #1)
      • AWS Secret Manager (key vault)
      • Custom resource (external setup)
      • Manage Policy Arn (access policy)
    • AWS Lambda function (service #2)
      • AWS Secret Manager (key vault)
      • Custom resource (external setup)
      • Manage Policy Arn (access policy)
    • AWS Lambda function (service #3)
      • AWS Secret Manager (key vault)
      • Custom resource (external setup)
      • Manage Policy Arn (access policy)

OpenAPI specs with Simplify definitions:

  • info.version: define software package version, set for initial packages
  • info.title: define software package description, set for initial packages
  • x-project-name: to define a project which contains other resources (e.g pets-micro-services)
  • x-deployment-name: to define a deployment environment (e.g pets-demo, pets-prod)
  • x-deployment-region: to define where to deploy resources (e.g eu-west-1)
  • x-deployment-profile: to define a profile that hold the deployment access (e.g simplify-eu)
  • x-api-gateway-name: to define an API gateway (Rest API) resource (e.g pets-api-gateway)
  • x-api-authorizer-id: provide an authorizer id that linked to API Authorizer (e.g Cognito Auhtorizer)
  • x-api-burst-limit: The API request burst limit, the maximum rate limit over a time ranging from one to a few seconds
  • x-api-rate-limit: The API request steady-state rate limit.
  • x-api-quota-limit: The maximum number of requests that can be made in a given time period.
  • x-api-quota-unit: The time period in which the limit applies. Valid values are "DAY", "WEEK" or "MONTH".
    • x-[api/event]-service-runtime: specify service runtime to create function (e.g nodejs12.x, python3.8 )
    • x-[api/event]-service-lang: specific runtime language - is one of javascript or python
    • x-[api/event]-service-name: to define lambda functions that host the source code (e.g pets-service)
    • x-[api/event]-service-model-name: to redirect the related routing paths into a service group (e.g pets)
    • x-[api/event]-service-public: expose or dispose this service path through API gateway (public or not)
    • x-[api/event]-service-authorizer: enable or disable using API Authorizer (e.g using Cognito Authorizer)
    • x-[api/event]-service-api-key: enable to use API Key with x-api-key header to authenticate resource
    • x-[api/event]-service-key-vault: enable or disable key vault service (SecretManager in AWS)
    • x-[api/event]-service-schedule: if set to value (e.g rate(10 minutes)) will schedule every 10 mins
    • x-[api/event]-service-policy: external access policy ARN (e.g Policy ARN to DynamoDB, S3, SNS...)
    • x-[api/event]-service-custom: integrate custom ARN function that trigger for external resource creation/deletion
    • x-[api/event]-service-control: enable or disable service fallen control using hystrix circuit breaker (valid only for docker)
    • x-[api/event]-service-validation: validate request parameters using swagger request validator (parseRequest middleware)
    • x-[api/event]-service-passthrough: passthrough original request from API Gateway to service model for backward compatibility
    • method: define a HTTP Rest API method: (get/put/post/delete)
      • x-control-operation-id or standard operationId: to define a friendly name for this operation method: e.g getPetByName
      • x-control-service-timeout: setup circuit break operation timeout (valid only for docker)
      • x-control-service-duration: setup circuit break operation close duration (valid only for docker)
      • x-control-service-threshold: setup circuit break operation threshold (valid only for docker)

The generated Pets Architecture Diagram

PetsDiagram