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/

Install

git clone ginhub.com/claygod/microservice
cd microservice
make build
make run

Go to localhost:8080 in your web browser

Endpoints

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

• / welcome handler
• /healthz/ready for SRE
• /healthz for kubernetes
• /readyness for kubernetes
• /metrics prometheus metrics
• /swagger generate swagger fo api
• /piblic/v1/bar/:key public route (example)

[!CAUTION] Requests from an external balancer should be forwarded not to the root of endpoints, but to /public. Then service routes with metrics and other private information will be inaccessible to external users.

Using

Build and run main.go

Example requests:

• localhost:8080/piblic/v1/bar/one -> {"Data":"three"}
• localhost:8080/piblic/v1/bar/secret -> response 404
• localhost:8080/piblic/v1/bar/looonnngggggkkkeeyyyyyyy -> response 404
• localhost:8080/healthz/ready -> minute first 5 sec - 503 after 200 (for example!)
• localhost:8080/healthz -> minute first 5 sec - 503 after 200 (for example!)
• localhost:8080/readyness -> response 200
• localhost:8080/swagger -> json-swagger

Swagger

After starting the application, the first time route /swagger is called, the swagger file config/swagger.yaml is regenerated.

Environment

Add to ENV export GATE_IN_TITLE=Yo-ho-ho! :+1: ang open in browser http://localhost:8080/ :tada:

Clean architecture

[!IMPORTANT] Distribution of architectural entities by layers

Entity

Path /domain

Usecases

Path /usecases

Interfaces

Path /service

Infrastructure

Path /app , /config and core

Config

The default configuration file:

• config/config.yaml

Specify in the command line another file:

• yourservice -config other.yaml

Dependencies

github.com/claygod/tools v0.0.0-20211122181936-bab1329a2e3d
github.com/dsbasko/go-cfg v1.2.0
github.com/google/uuid v1.3.0
github.com/julienschmidt/httprouter v1.3.0
github.com/pborman/getopt v1.1.0
github.com/prometheus/client_golang v1.11.0
github.com/savaki/swag v0.0.0-20170722173931-3a75479e44a3
sigs.k8s.io/yaml v1.4.0

github.com/BurntSushi/toml v1.3.2 // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/caarlos0/env/v10 v10.0.0 // indirect
github.com/cespare/xxhash/v2 v2.1.1 // indirect
github.com/golang/protobuf v1.4.3 // indirect
github.com/joho/godotenv v1.5.1 // indirect
github.com/kr/text v0.2.0 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
github.com/prometheus/client_model v0.2.0 // indirect
github.com/prometheus/common v0.26.0 // indirect
github.com/prometheus/procfs v0.6.0 // indirect
github.com/spf13/pflag v1.0.5 // indirect
golang.org/x/sys v0.15.0 // indirect
google.golang.org/protobuf v1.26.0-rc.1 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect

ToDo

• Use environment variables in configuration
• Add support for metrics
• Input validate
• Swagger 2.0
• 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!

[!TIP] 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

Copyright © 2017-2024 Eduard Sesigin. All rights reserved. Contacts: [email protected]