Microservice

The framework for the creation of microservices, written in Golang. This package is implemented using clean architecture principles. A good article on implementing these principles in Golang: http://manuel.kiessling.net/2012/09/28/applying-the-clean-architecture-to-go-applications/

Endpoints

Code in /services/gateways/gatein/gatein.go

• / welcome handler
• /health_check for SRE
• /readyness for kubernetes
• /metrics prometheus metrics
• /piblic/v1/bar/:key public route (example)

Using

Build and run main.go

Example requests:

• localhost:8080/piblic/v1/bar/one
• localhost:8080/piblic/v1/bar/123
• localhost:8080/piblic/v1/bar/secret -> response 404
• localhost:8080/piblic/v1/bar/looonnngggggkkkeeyyyyyyy

Clean architecture

Distribution of architectural entities by layers

Entity

Path /domain

Usecases

Path /usecases

Interfaces

Path /service

Infrastructure

Path /app , /config and core

Config

Types of variables that support the use of environment variables in the configuration (a pointer is required, or will be ignored!) :

• string
• float32, float64
• int, int8, int16, int32, int64
• uint, uint8, uint16, uint32, uint64

The default configuration file:

• config/config.toml

Specify in the command line another file:

• yourservice -config other.toml

Use environment variables in configuration:

• yourservice -env true

Command line xample:

• foo -config stage.toml -env true

Configuration with environment tag example:

type Config struct {
	MaxIDLenght *int `env:"FOO_MAX_ID_LENGHT"`
}

Dependencies

• github.com/BurntSushi/toml
• github.com/claygod/tools
• github.com/google/uuid
• github.com/julienschmidt/httprouter
• github.com/pborman/getopt
• github.com/prometheus/client_golang
• github.com/prometheus/tsdb
• github.com/sirupsen/logrus

ToDo

• [x] Use environment variables in configuration
• [x] Add support for metrics
• [ ] Use protocol gRPC

Conclusion

Microservice does not claim the laurels of the only true solution, but on occasion, I hope, will help you create your own micro-architecture of the service, becoming the prototype for future applications.

Give us a star!

If you like or are using this project to learn or start your solution, please give it a star. Thank you!

License

GNU GENERAL PUBLIC LICENSE Version 3

Copyright © 2017-2022 Eduard Sesigin. All rights reserved. Contacts: [email protected]