golang-rest-api-template

🚀 Template Repository

This is a template repository for building REST APIs with Go. Click the "Use this template" button above to create your own repository based on this template.

Overview

This template includes everything you need to build a REST API with Go - logging, middleware, database setup, testing, and deployment configs.

Features

• Structured logging
• Middleware (auth, CORS, etc.)
• Config management
• API docs with Swagger
• Docker setup
• GitHub Actions CI/CD
• Database migrations
• Tests
• Makefile for common tasks

The main ones are:

• gorilla/mux for routing
• go-playground/validator for request validation
• go-sql-driver/mysql for MySQL database access
• jmoiron/sqlx for enhanced database access
• Masterminds/squirrel for SQL builder
• golang-migrate/migrate for database migrations
• swaggo/swag for API documentation generation
• strechr/testify for writing easier test assertions
• mockery for generating mock interfaces
• uber/zap for structured logging
• prometheus/client_golang for metrics
• otel for observability
• jaeger for distributed tracing

🎯 Quick Start (Using Template)

1. Create Repository from Template

Click the "Use this template" button at the top of this repository, or use GitHub CLI:

gh repo create my-go-api --template MitulShah1/golang-rest-api-template

2. Clone Your New Repository

git clone https://github.com/YOUR_USERNAME/my-go-api.git
cd my-go-api

3. Update Project Details

After creating your repository, update these files:

• go.mod - Update module name
• README.md - Update project name and description
• .github/workflows/go.yml - Update repository references if needed
• docker-compose.yml - Update service names if needed

4. Start Development

make help          # See all available commands
make env           # Create .env file
make docker_up     # Start with Docker
make test          # Run tests

Project Structure

golang-microservice-template/
│── cmd/
│   ├── server/                # Main entry point for the service
│   │   ├── main.go
│── config/
│   ├── config.go              # Application configuration
│── docs/                      # API documentation
│── internal/
│   ├── handlers/              # HTTP handlers
│   │   ├── server.go          # HTTP server
│   ├── services/              # Business logic
│   ├── repository/            # Data access layer
│── package/                   # Utility packages (database, logging, middleware, etc.)
│   ├── database/
│   │   ├── database.go
│── │   ├──migrations/         # Database migrations
│   ├── logger/
│   │   ├── logger.go
│   ├── middleware/
│   │   ├── basic_auth.go       # Basic authentication middleware
│   │   ├── cors.go             # CORS middleware
│   ├── ├── promotheus.go       # Prometheus metrics
│── test/
│   ├── e2e/                    # End-to-end tests
│── Dockerfile                  # Docker build configuration
│── docker-compose.yml          # Docker Compose setup
│── Makefile                    # Build automation
│── go.mod                      # Go module dependencies
│── go.sum                      # Dependencies lock file
│── README.md                   # Project documentation

Getting Started

Prerequisites

• Go 1.21+
• Docker and Docker Compose
• Make

All Make Commands

To Check All Commands:

make help

Running the Application

1; Clone the repository

git clone https://github.com/MitulShah1/golang-rest-api-template.git

2; Create .env file from .env.example add details

make env

3; Start the application using Docker Compose

make docker_up

Development

Build the application:

make build

Run tests:

make test

Generate API documentation:

make generate_docs

DB Migrations

Create Migration:

make create_migration

Run Migrations:

make migration_up

Down Migrations:

make migration_down

Configuration

Configuration is managed through .env. Environment variables can override these settings.

API Documentation

API documentation is generated using Swagger. The documentation is available at http://localhost:8080/swagger/index.html.

Prometheus Metrics

Prometheus metrics are exposed at http://localhost:8080/metrics.

Testing

• Unit tests are alongside the code
• Integration tests are in the test/ directory
• Run all tests with make test

Deployment

The project includes:

• Dockerfile for containerization
• docker-compose.yml for local development
• GitHub Actions for CI/CD pipeline

Contributing

1. Fork the repository
2. Create your feature branch
3. Commit your changes
4. Push to the branch
5. Create a new Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details