Typescript REST API Backend Template

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Typescript REST microservice boilerplate using node.js and express and some other cool stuff

This template is intended to be used as single service in a REST multi-service application using Cloud Pub/Sub as message broker

use in local with Skaffold and in cloud with GKE

To know more about how to implement GKE and run with Skaffold please refer to this folder:

./infra

The application uses express as framework and is configured with the following features:

• ECMA2022 features enabled
• Dotenv Load environment variables from .env file
• Eslint Code quality tool
• Prettier to prettify the code
• MongoDB ready to go configuration with mongoose
• MySQL ready to go configuration with mysql2
• CORS feature enabled
• RBAC logic to authorize people with specific roles to use the endpoints.
• Passport logic to add an authentication layer if neeeded.
• Sparkpost email service support with sparkpost.
• Error Handling errors custom middleware and helpers globally configured
• Multer File uploading configured to use in routes as middleware
• Google Cloud Storage middleware configured to use Google Cloud Storage as upload bucket
• Google Cloud Pub/Sub pub/sub support for event driven events added
• Axios globally configured in ./src/utils/api.utils.js
• Swagger documentation reachable at http://localhost:3000/api/v1/docs
• Jest Testing tool support
• Logger Logging support with Winston
• Docker ready configuration with multi-stage option
• Terraform ready configuration to instantiate infrastracture in GCP
• Agenda ready to emit events through agenda jobs
• Best practices in naming files

Basic Information

• App entry point is located in ./src/index.ts

• Server config entrypoint is located in ./src/bin/server.ts

• Prettier config is located at ./.prettierrc.js

• Eslint config is located at ./.eslintrc

• Sparkpost service support is located at ./src/services/email/sparkport.service.ts

  • You can define your own email services in this file

• Mongo config is located at ./src/config/mongodb.config.ts

• MYSQL config is located at ./src/config/mysql.config.ts

• Error Handling middleware is located at ./src/middlewares/errorHandler.middleware.ts

  • You can configure as many errors you need in ./src/errors/

• Multer middleware is located at ./src/middlewares/upload.middleware.ts

  • If you want to use Google Cloud Storage as upload bucket follow instructions at ./src/config/gcloud/README.md

• RBAC logic middleware is located at ./src/middlewares/verifyApiRights.middleware.ts

• Swagger config file is located at ./src/api/swagger/swagger.route.js

  • Swagger routes are defined in ./src/api/swagger/swagger.route.ts

• Docker config is located at ./Dockerfile

• Pub/Sub service is located at ./src/services/pubsub/pub-sub.service.js

Folder Structure

infra/

• For more information about the k8s configuration please check the README file
• k8s - folder contains all production kubernetes manifests
• k8s-dev - folder contains all development kubernetes manifests to run with skaffold
• scripts - older contains all script related to the creation of a cluster or running skaffold or secret creation

src/

• api/ - containing all api logic with model, services, controller and routes
• bin/ - server configuration folder
• config/ - this folder contains all the configs file (database, passport, etc...)
• constants/ - this folder contains all the global constants
• logs/ - the logger file will be stored here
• helpers/ - some helpers func i.e. an error helper that returns json everytime an error comes in
• middlewares/ - here you can find all the custom middlewares
• services/ - here we store all the services; i.e. here we define methods to manipulate a db model entity
• tests/ - here we store all the jest test
• utils/ - containing some utils function to be reused in the code (i.e. axios global configuration)

Getting Started

Copy the .env.example to .env. Be sure to fill all the global variables. Alternatively you can use the script generate-env.sh in the scripts folder. This script will generate a .env.test.local and you can copy this file to .env

cp env.example .env

Then replace:

1. MONGO_URI string with your Mongo connection
   1. MONGO_URI_TEST string with your Mongo Test connection
2. MYSQL_HOST_STAGE string with your mysql host name
   • MYSQL_USER_STAGE string with your mysql username
   • MYSQL_PASSWORD_STAGE string with your mysql password name
   • MYSQL_DB_STAGE string with your mysql db name
   • MYSQL_SOCKET_STAGE string with your mysql socket name
3. GOOGLE_APPLICATION_CREDENTIALS path with yours
4. GOOGLE_PROJECT_ID with yours
5. SENDGRID_API_KEY with yours
6. SENDGRID_SENDER_EMAIL with yours

In order to Google Cloud Storage works follow instructions located in ./src/config/gcloud/README.md

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To get started with this repo npm install in the root folder

npm install

To getting started with a dev environment. Here we use nodemon and babel-node to restart the server asa we change something

npm run start:dev

To compile the code and create a production build

npm run compile

This command will create a build in the root directory

To start with a production ready build you can run this command

# This set the NODE_ENV to production, npm-run-all, create a build and run the server command
npm run start

If you have a build and you want to node the build you can run

# This command launch the node instance inside the ./build/bin/server
npm run server

Docker Ready

Here we use the multistage build to optimize speed and size of the final image

If you use Docker and wanna dockerize the app you can run the command

docker build -t <dockerhubusername>/<docker-image-name>:<tag> .

then

docker run --name <docker-process-name> -d - p 3000:3000 <dockerhubusername>/<docker-image-name>:<tag>