kotlin-serverless (API)

• Overview
• Installation
• Deploying
• CI/CD
• Contribute
• Contributors
• Author

Overview

This framework is to be used to generate kotlin serverless based API's To add new API's:

• Update serverless.yml
• Update routes.yml
• Add the appropriate service and unit test
• Add the appropriate controller
• Add the appropriate integration test

Tech stack:

• Serverless, Kotlin, jUnit, exposed (mysql, auroraserverless), circleci, bugsnag

Install

NOTE: Make sure you're using Java 8 (v1.8.*)

1. Install it using npm:

git clone git@github.com:lostcodingsomewhere/kotlin-serverless-v2.git
cd kotlin-serverless-v2
npm install serverless -g
npm init -f
npm install

2. Create your project in serverless.com

3. To configure your AWS credentials execute serverless config credentials --provider aws --key EXAMPLE --secret EXAMPLEKEY

4. mvn clean install

5. ./start.sh local

Deploying

1. Create AWS Serverless Aurora RDS DB
   • Follow [Step 1, Step 2]
   • Note: Aurora serverless DBs can only be accessed from within the VPC, thus you cannot access it from your local server even if you change the inbound capabilities
   • Must access via EC2, Lambda Functions, or Cloud9IDE. EC2 route is described as follows.
2. Create EC2 Instance to Access RDS DB
   • Note: Use same VPC/Security Group as the RDS DB
3. Update Security group to have access between ec2 and rds
   • Follow [Step 4] but note below:
   • Edit inbound to add SSH from all and MYSQL/Aurora from all
4. Add api database to the newly created db
   • Connect to the ec2 instance

   • ssh -i <path to pem file> ec2-user@<ec2 public url>

   • Update yum

   • sudo yum update

   • Install mysql if it doesn’t exist (check by using mysql command)

   • sudo yum install mysql

   • mysql -h <aurora db cluster url> -P 3306 -u <dbusername> -p

   • Create database lostcoders if it doesn’t exist
5. Update serverless.yml
   • Vpc:, securityGroupIds, subnetIds
   • Environment: database_url, database_driver, database_user, database_password
   • For local env use after you have created a mysql database and added a lostcoders db:
     • database_url: jdbc:mysql://localhost:3306/api
     • database_driver: com.mysql.jdbc.Driver
     • database_user: root
     • database_password:
   • For production env use creds from above aws instances
6. Setup env vars in serverless.yml and also add to AWS SMPS (ex: ${ssm:/lostcoders/production/database/user})
7. Install serverless
8. Setup AWS Creds for Serverless Framework
9. Create project in https://dashboard.serverless.com if it doesn’t already exist
10. To deploy ./start.sh

    ./start.sh local
    ./start.sh production

CI/CD

• Using circleci you can setup continuous integration and deployment. Look at /.circleci/config.yml
• Current configuration depends on the following:
  • all new pull requests will auto build and test
  • all pushes to master branch will deploy to development env
  • all pushes to production branch will deploy to production env
  • after any deployment, postman tests will get triggered

Contributing

• Feel free to create pull requests in your own branch, include descriptions and tests.

Contributors

Contributions by:

• Arya Soltanieh

Author

Arya Soltanieh