Go Clean Architecture

Clean Architecture with Gin Web Framework

Features ⭐

• Clean Architecture written in Go
• Application backbone with Gin Web Framework
• Dependency injection using uber-go/fx
• API endpoints documentation with Swagger-UI
• Uses fully featured GORM

Linter setup

Need Python3 to setup linter in git pre-commit hook.

make lint-setup

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Run application

• Setup environment variables

cp .env.example .env

• Update your database credentials environment variables in .env file
• Setup serviceAccountKey.json. To get one create a firebase project. Go to Settings > Service Accounts and then click "Generate New Private Key". and then confirm by clicking "Generate Key". Copy the key to serviceAccountKey.json file. You can see the example at serviceAccountKey.json.example file.

Locally

• Run go run main.go app:serve to start the server.
• There are other commands available as well. You can run go run main.go -help to know about other commands available.

Using Docker

Ensure Docker is already installed in the machine.

• Start server using command docker-compose up -d or sudo docker-compose up -d if there are permission issues.

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Folder Structure 📁

Folder Path	Description
/api	contains all the middlwares, controllers and routes of the server in their respective folders
/api-errors	server error handlers
/bootstrap	contains modules required to start the application
/console	server commands, run go run main.go -help for all the available server commands
/constants	global application constants
/docker	docker files required for docker compose
/docs	API endpoints documentation using swagger
/hooks	git hooks
/infrastructure	third-party services connections like gmail, firebase, s3-bucket, ...
/lib	contains library code
/migration	database migration files
/models	ORM models
/repository	contains repository part of clean architecture. Mainly database queries are added here.
/seeds	seeds for already migrated tables
/services	service layers, contains the functionality that compounds the core of the application
/tests	includes application tests
/utils	global utility/helper functions
.env.example	sample environment variables
dbconfig.yml	database configuration file for sql-migrate command
docker-compose.yml	docker compose file for service application via Docker
main.go	entry-point of the server
Makefile	stores frequently used commands; can be invoked using make command
serviceAccountKey.json.example	sample credentials file for accessing Google Cloud

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Migration Commands

⚓️   If you want to run the migration runner from the host environment instead of the docker environment; ensure that sql-migrate is installed on your local machine.

Install sql-migrate

You can skip this step if sql-migrate has already been installed on your local machine.

Note: Starting in Go 1.17, installing executables with go get is deprecated. go install may be used instead. Read more

go install github.com/rubenv/sql-migrate/...@latest

If you're using Go version below 1.18

go get -v github.com/rubenv/sql-migrate/...

Running migration

Add argument p=host after make command to run migration commands on local environment

Example:

make p=host migrate-up

Available migration commands

Command	Desc
make migrate-status	Show migration status
make migrate-up	Migrates the database to the most recent version available
make migrate-down	Undo a database migration
make redo	Reapply the last migration
make create	Create new migration file

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Testing

The framework comes with unit and integration testing support out of the box. You can check examples written in tests directory.

To run the test just run:

go test ./... -v

For test coverage

go test ./... -v -coverprofile cover.txt -coverpkg=./...
go tool cover -html=cover.txt -o index.html

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Checking API documents with swagger UI

Browse to http://localhost:${SWAGGER_PORT}

• You can see all the documented endpoints in Swagger-UI from the API specification
• You can execute/test endpoint. Read article

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Update Dependencies

Steps to Update Dependencies

1. go get -u
2. Remove all the dependencies packages that has // indirect from the modules
3. go mod tidy

Discovering available updates

List all of the modules that are dependencies of your current module, along with the latest version available for each:

go list -m -u all

Display the latest version available for a specific module:

go list -m -u example.com/theirmodule

Example:

go list -m -u cloud.google.com/go/firestore
cloud.google.com/go/firestore v1.2.0 [v1.6.1]

Getting a specific dependency version

To get a specific numbered version, append the module path with an @ sign followed by the version you want:

go get example.com/theirmodule@v1.3.4

To get the latest version, append the module path with @latest:

go get example.com/theirmodule@latest

Synchronizing your code’s dependencies

go mod tidy