Authentication service

Environment variables

Variables are stored in .env file.

• DATABASE_URL - PostgresSQL database URL
• SECRET_KEY - secret key for JWT token generation
• SERVER_IP - server IP in ListenAndServe
• SERVER_PORT server port in ListenAndServe
• MAILTRAP_USERNAME - username from Mailtrap
• MAILTRAP_PASSWORD - password from Mailtrap
• FROM_EMAIL - the email we use to send emails in Mailtrap

Deployment

Dockerfile for server, server and database are deployed with docker-compose.yml.

Module tests

Tests are in database_test.go, services_test.go and handlers_test.go.

80%+ coverage.

Documentation

Documentation is in docs.go, swagger.json and swagger.yaml.

Routes

• /create - the CreateTokens handler generates JWT access and refresh tokens using user's email and guid.
• /refresh - the RefreshTokens handler refreshes access and refresh tokens using the refresh token received in the X-Refresh-Token header.

Database

Database stores:

• token id (the same for access and refresh tokens)
• bcrypt hash of JWT refresh token sign
• status (used, unused, blocked and so on).

Sending email when the user changes IP

When the IP address changes, the email is sent via Mailtrap.