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Golang Clean architecture REST API example with a comprehensive real project. It uses docker, docker compose, redis, elasticsearch, kibana, filebeat, postgresql, prometheus, grafana. also use gin, gorm, viper, zerolog, zap, validator, dynamic search, swagger and JWT

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Golang Clean Web API (Dockerize) with a full sample project (Car Sale project)

System Design Diagram

Golang Web API System Design Diagram

Database Design Diagram

Golang Web API System Design Diagram

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Used Tools

  1. Gin as web framework
  2. JWT for authentication and authorization
  3. Redis for caching
  4. Elasticsearch for logging database
  5. Beat for log shipping
  6. Kibana as log viewer
  7. Postgresql as main database engine
  8. PgAdmin as database management tool
  9. Prometheus for metric database
  10. Grafana for metric dashboards
  11. Validator for endpoint input Validation
  12. Viper for configurations
  13. Zap for logging
  14. Zerolog for logging
  15. Gorm as ORM
  16. Swagger for documentation
  17. Docker compose to run project with all dependencies in docker

How to run

Run on local system

Start dependencies on docker

docker compose -f "docker/docker-compose.yml" up -d setup elasticsearch kibana filebeat postgres pgadmin redis prometheus node-exporter alertmanager grafana

Install swagger and run app

cd src
go install github.com/swaggo/swag/cmd/swag@latest
cd src/cmd
go run main.go

Stop

docker compose -f "docker/docker-compose.yml" down

Examples

Login
curl -X 'POST' \
  'http://localhost:5005/api/v1/users/login-by-username' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
  "password": "12345678",
  "username": "admin"
}'
Sample filters request body
City filter and sort
{
  "filter": {
    "Name": {
      "filterType": "text",
      "from": "t", 
      "type": "contains"
    } 
  },
  "pageNumber": 1,
  "pageSize": 10,
  "sort": [
    {
      "colId": "name",
      "sort": "desc"
    }
  ]
}
City in range filter
{
  "filter": {
    "Id": { // Column name
      "filterType": "number", // number, text,...
      "from": "1", 
      "to": "7", 
      "type": "inRange" // contains, equals,...
    } 
  },
  "pageNumber": 1,
  "pageSize": 10,
  "sort": [
    {
      "colId": "name",
      "sort": "desc"
    }
  ]
}

Run project with dependencies on Docker

docker compose -f "docker/docker-compose.yml" up -d --build

Web API Run in docker http://localhost:9001

Token Url: http://localhost:9001/api/v1/users/login-by-username
Username: admin
Password: 12345678
Username: elastic
Password: @aA123456
Username: admin
Password: foobar
Username: [email protected]
Password: 123456

Postgres Server info:

Host: postgres_container
Port: 5432
Username: postgres
Password: admin

Docker Stop

docker compose -f 'docker/docker-compose.yml' --project-name 'docker' down

Linux

  1. build Project and copy configuration
/src > go build -o ../prod/server ./cmd/main.go
/src > mkdir ../prod/config/ && cp config/config-production.yml ../prod/config/config-production.yml
  1. Create systemd unit
sudo vi /lib/systemd/system/go-api.service
  1. Service config
[Unit]
Description=go-api

[Service]
Type=simple
Restart=always
RestartSec=20s
ExecStart=/home/hamed/github/golang-clean-web-api/prod/server
Environment="APP_ENV=production"
WorkingDirectory=/home/hamed/github/golang-clean-web-api/prod
[Install]
WantedBy=multi-user.target
  1. Start service
sudo systemctl start go-api
  1. Stop service
sudo systemctl stop go-api
  1. Show service logs
sudo journalctl -u go-api -e

Project preview

Swagger

Golang Web API preview

Grafana

Golang Web API grafana dashboard

Kibana

Golang Web API grafana dashboard

About

Golang Clean architecture REST API example with a comprehensive real project. It uses docker, docker compose, redis, elasticsearch, kibana, filebeat, postgresql, prometheus, grafana. also use gin, gorm, viper, zerolog, zap, validator, dynamic search, swagger and JWT

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