Moleculer Go

🚀 Progressive microservices framework for Go

Inspired and compatible with Moleculer JS

Simple, fast, light and fun to develop with. Also easy, very easy to test ;)

Get Started

• http://gomicro.services (Official site and Documentation)
• Database examples

Example

package main

import (
	"fmt"

	"github.com/moleculer-go/moleculer"
	"github.com/moleculer-go/moleculer/broker"
)

type MathService struct {
}

func (s MathService) Name() string {
	return "math"
}

func (s *MathService) Add(params moleculer.Payload) int {
	return params.Get("a").Int() + params.Get("b").Int()
}

func (s *MathService) Sub(a int, b int) int {
	return a - b
}

func main() {
	var bkr = broker.New(&moleculer.Config{LogLevel: "error"})
	bkr.Publish(&MathService{})
	bkr.Start()
	result := <-bkr.Call("math.add", map[string]int{
		"a": 10,
		"b": 130,
	})
	fmt.Println("result: ", result.Int())
	//$ result: 140
	bkr.Stop()
}

Roadmap

v0.1.0 (MVP)

Contents:

• Service Broker
• Transit and Transport
• Actions (request-reply)
• Events
• Mixins
• Load balancing for actions and events (random round-robin)
• Service registry & dynamic service discovery
• Versioned services
• Middlewares
• NATS Streaming Transporter
• JSON Serializer
• Examples :)

v0.2.0 (Beta RC1)

• Action validators
• Support for streams
• More Load balancing implementations (cpu-usage, latency)
• Fault tolerance features (Circuit Breaker, Bulkhead, Retry, Timeout, Fallback)
• Built-in caching solution (memory, Redis)
• More transporters (gRPC, TCP, Redis, Kafka)
• More serializers (Avro, MsgPack, Protocol Buffer, Thrift)

v0.3.0 (Beta)

• Performance and Optimization
• More DB Adaptors (Firebase, MySQL)
• CLI for Project Seed Generation

v0.4.0 (Alpha)

• Event Sourcing Mixins

v0.5.0 (Release)

Installation

$ go get github.com/moleculer-go/moleculer

Running examples

# simple moleculer db example with memory adaptor
$ go run github.com/moleculer-go/store/examples/users

# simple moleculer db example with Mongo adaptor
$ go run github.com/moleculer-go/store/examples/usersMongo

# simple moleculer db example with SQLite adaptor
$ go run github.com/moleculer-go/store/examples/usersSQLite

# complex moleculer db example with population of fields by other services
$ go run github.com/moleculer-go/store/examples/populates

Running tests

# integration tests require mongo, nats streaming and rabbitmq

# run mongo
docker run -d -p 27017:27017 mongo

# run nats-streaming
docker run -d -p 4222:4222 nats-streaming -mc 0


# run rabbitmq
docker run -d -p 5672:5672 rabbitmq

# running all tests
go test ./...
# or
ginkgo -r