iamgoangle / go-rabbitmq

AMQP Client Wrapper support consumer-reconnecting and DLQ

GO AMQP Client Wrapper

About

Implementation is probably straight-forward of the project that aim to follow chain-of-responsiblity and functional options for friendly APIs pattern to solve the complexity and make abstraction layer to a user that use the this library.

Features

• Middlewares for exchange, queue and queue bind.
• Functional options for producer publishing the message.
• Re-establish connection and channel to Publisher and Consumer.
• Consumer retry queue middleware.
• Consumer retry queue middleware with backoff config.
• Closed connection and channel gracefully.

Producer

import (
	"log"

	rabbitmq "github.com/iamgoangle/go-rabbitmq/pkg/rabbitmq"
	middlewares "github.com/iamgoangle/go-rabbitmq/pkg/rabbitmq/middlewares"
)

func main() {
	conf := rabbitmq.Config{
		Host:     "localhost",
		Port:     5672,
		Username: "admin",
		Password: "1234",
		Vhost:    "/",
	}
	connection, err := rabbitmq.NewAMQPConnection(conf)
	if err != nil {
		log.Panic(err)
	}

	connection.Use(middlewares.ExchangeDeclare("exchange_test", middlewares.ExchangeDirect, nil))
	connection.Use(middlewares.QueueDeclare("test", nil))
	connection.Use(middlewares.QueueBind("test", "", "exchange_test", false, nil))
	if err := connection.Run(); err != nil {
		log.Panic(err)
	}

	producer := rabbitmq.NewProducer("exchange_test", "", "", connection)
	err = producer.Publish([]byte(`{"Name":"Alice","Body":"Hello","Time":1294706395881547000}`))
	if err != nil {
		log.Println("unable to publish body")
	}
}

Basic Consumer

import (
	"fmt"
	"log"

	rabbitmq "github.com/iamgoangle/go-rabbitmq/pkg/rabbitmq"
	middlewares "github.com/iamgoangle/go-rabbitmq/pkg/rabbitmq/middlewares"
)

type handler struct {
}

func main() {
	conf := rabbitmq.Config{
		Host:     "localhost",
		Port:     5672,
		Username: "admin",
		Password: "1234",
		Vhost:    "/",
	}
	connection, err := rabbitmq.NewAMQPConnection(conf)
	if err != nil {
		log.Panic(err)
	}

	connection.Use(middlewares.ExchangeDeclare("exchange_test", middlewares.ExchangeDirect, nil))
	connection.Use(middlewares.QueueDeclare("test", nil))
	connection.Use(middlewares.QueueBind("test", "", "exchange_test", false, nil))
	if err := connection.Run(); err != nil {
		log.Panic(err)
	}

	consumer := rabbitmq.NewConsumer("test", "consumer_name", connection)
	consumer.Use(newConsumerHandler())

	if err := consumer.Consume(); err != nil {
		log.Panic(err)
	}
}

func newConsumerHandler() rabbitmq.ConsumerHandler {
	return &handler{}
}

func (h *handler) Do(msg []byte) error {
	fmt.Println(string(msg))

	return nil
}