rabbitmq golang

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package helpers

import (
	"context"
	"log"
	"os"
	"time"

	"github.com/google/uuid"
	jsoniter "github.com/json-iterator/go"
	ampq "github.com/rabbitmq/amqp091-go"
)

type queueResponse struct {
	Items interface{}
}

type rabbitmqInterface interface {
	Publisher(ctx context.Context, eventName string, eventMessage interface{}) bool
}

type rabbitmq struct {
	connection *ampq.Connection
}

var (
	rbConfig     = ampq.Config{}
	rbResponse   = queueResponse{}
	exchangeName = "idrm.direct"
	routingKey   = "a.b.c"
	isPublished  = true
	isConsumed   = true
	json         = jsoniter.ConfigCompatibleWithStandardLibrary
)

func NewRabbitMQ() rabbitmqInterface {
	var (
		protocol = os.Getenv("RABBITMQ_PROTOCOL")
		vhost    = os.Getenv("RABBITMQ_VHOST")
		host     = os.Getenv("RABBITMQ_HOST")
		port     = os.Getenv("RABBITMQ_PORT")
		user     = os.Getenv("RABBITMQ_USER")
		pass     = os.Getenv("RABBITMQ_PASSWORD")
	)

	rbns := protocol + "://" + user + ":" + pass + "@" + host + ":" + port + vhost // example url host like this -> amqp://admin:admin@localhost:5672/
	rbConfig.Heartbeat = time.Duration(time.Second * 30)                           // before rabbitmq connection is closed, try connecting again if rabbitmq connection disconnected

	connection, err := ampq.DialConfig(rbns, rbConfig)
	if err != nil {
		defer log.Fatalf("RABBITMQ NOT CONNECTED: %s", err.Error())
		defer connection.Close()
		return nil
	}

	defer log.Println("RABBITMQ CONNECTED")
	return &rabbitmq{connection: connection}
}

/**
*===============================================
* HANDLER METHOD - Publisher
* ==============================================
* Publisher used it for sending data into queue
*===============================================
**/

func (h *rabbitmq) Publisher(ctx context.Context, eventName string, eventMessage interface{}) bool {
	channel, err := h.connection.Channel()
	if err != nil {
		defer func() {
			log.Printf("Rabbitmq channel error: %s", err.Error())
			channel.Close() // close connection if rabbitmq not connected after heartbeat
		}()
		isPublished = false
	}

	// overwrite routing key default name
	routingKey = eventName

	if err := channel.ExchangeDeclare(exchangeName, ampq.ExchangeDirect, true, false, false, false, nil); err != nil {
		defer log.Printf("Prepare exchange into broker error: %s", err.Error())
		isPublished = false
	}

	queue, err := channel.QueueDeclare(eventName, true, false, false, false, nil)
	if err != nil {
		defer log.Printf("Prepare queue into broker error: %s", err.Error())
		isPublished = false
	}

	if err := channel.QueueBind(queue.Name, routingKey, exchangeName, false, nil); err != nil {
		defer log.Printf("Binding queue into routing key error: %s", err.Error())
		isPublished = false
	}

	bodyRequest, err := json.Marshal(eventMessage)
	if err != nil {
		defer log.Printf("Parse request body into request queue error: %s", err.Error())
		isPublished = false
	}

	pubRequest := ampq.Publishing{
		AppId:           uuid.NewString(),
		ContentType:     "application/json",
		ContentEncoding: "application/json",
		Timestamp:       time.Now().Local(),
		Body:            bodyRequest,
	}

	if err := channel.PublishWithContext(ctx, exchangeName, routingKey, false, false, pubRequest); err != nil {
		defer log.Printf("Published data into queue error: %s", err.Error())
		isPublished = false
	}

	// talk to server when published msg is not delivery, then requeue message
	if err := channel.Nack(0, true, true); err != nil {
		defer log.Printf("Published data into queue error: %s", err.Error())
		isPublished = false
	}

	defer log.Printf(`RABBITMQ PUBLISHER LOGS:
	Exchange Name: %s
	Routing Name: %s
	Event Name: %s
	Request: %v
`, exchangeName, routingKey, eventName, eventMessage)

	return isPublished
}

Popularity 9/10 Helpfulness 3/10 Language go

Source: Grepper

Tags: go rabbitmq

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Contributed on Dec 27 2022

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

golang rabbit mq

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package main

import (
	"fmt"
	"log"

	amqp "github.com/rabbitmq/amqp091-go"
)

const url = "amqp://root:root@localhost:5672/"

func main() {
	// var exchange = "exchange-1"
	// var routingKey = "a.b.c"

	conn, err := amqp.Dial(url)
	if err != nil {
		log.Fatalf("cannot (re)dial: %v: %q", err, url)
	}

	ch, err := conn.Channel()
	if err != nil {
		log.Fatalln(err)
	}
	defer ch.Close()

	q, err := ch.QueueDeclare(
		"queue-1", // name
		false,     // durable
		false,     // delete when unused
		false,     // exclusive
		false,     // no-wait
		nil,       // arguments
	)
	if err != nil {
		log.Fatalln(err)
	}

	msgs, err := ch.Consume(
		q.Name, // queue
		"",     // consumer
		true,   // auto-ack
		false,  // exclusive
		false,  // no-local
		false,  // no-wait
		nil,    // args
	)
	if err != nil {
		log.Fatalln(err)
	}

	message := <-msgs
	fmt.Println("message: ", string(message.Body))
}

Popularity 9/10 Helpfulness 2/10 Language whatever

Source: Grepper

Tags: mq whatever whateve

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Contributed on Nov 10 2022

Alifudin Alfarizi

0 Answers Avg Quality 2/10

golang rabbit mq

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package main

import (
	"log"

	amqp "github.com/rabbitmq/amqp091-go"
)

const url = "amqp://root:root@localhost:5672/"

func main() {
	var exchange = "exchange-1"
	var routingKey = "a.b.c"

	conn, err := amqp.Dial(url)
	if err != nil {
		log.Fatalf("cannot (re)dial: %v: %q", err, url)
	}

	ch, err := conn.Channel()
	if err != nil {
		log.Fatalln(err)
	}
	defer ch.Close()

	err = ch.ExchangeDeclare(exchange, "direct", true, false, false, false, nil)
	if err != nil {
		log.Fatalln(err)
	}

	q, err := ch.QueueDeclare(
		"queue-1", // name
		false,     // durable
		false,     // delete when unused
		false,     // exclusive
		false,     // no-wait
		nil,       // arguments
	)
	if err != nil {
		log.Fatalln(err)
	}

	err = ch.QueueBind(q.Name, routingKey, exchange, false, nil)
	if err != nil {
		log.Fatalln(err)
	}

	err = ch.Publish(
		exchange,   // exchange
		routingKey, // routing key
		false,      // mandatory
		false,      // immediate
		amqp.Publishing{
			ContentType: "text",
			Body:        []byte("halo"),
		})
	if err != nil {
		log.Fatalln(err)
	}
}

Popularity 9/10 Helpfulness 1/10 Language whatever

Source: Grepper

Tags: mq whatever w

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Contributed on Nov 10 2022

Alifudin Alfarizi

0 Answers Avg Quality 2/10

rabbitmq golang

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0

package helpers

import (
	"context"
	"log"
	"os"
	"time"

	"github.com/google/uuid"
	jsoniter "github.com/json-iterator/go"
	ampq "github.com/rabbitmq/amqp091-go"
)

type queueResponse struct {
	Items interface{}
}

type rabbitmqInterface interface {
	Consumer(eventName string) (queueResponse, bool)
}

type rabbitmq struct {
	connection *ampq.Connection
}

var (
	rbConfig     = ampq.Config{}
	rbResponse   = queueResponse{}
	exchangeName = "idrm.direct"
	routingKey   = "a.b.c"
	isPublished  = true
	isConsumed   = true
	json         = jsoniter.ConfigCompatibleWithStandardLibrary
)

func NewRabbitMQ() rabbitmqInterface {
	var (
		protocol = os.Getenv("RABBITMQ_PROTOCOL")
		vhost    = os.Getenv("RABBITMQ_VHOST")
		host     = os.Getenv("RABBITMQ_HOST")
		port     = os.Getenv("RABBITMQ_PORT")
		user     = os.Getenv("RABBITMQ_USER")
		pass     = os.Getenv("RABBITMQ_PASSWORD")
	)

	rbns := protocol + "://" + user + ":" + pass + "@" + host + ":" + port + vhost // example url host like this -> amqp://admin:admin@localhost:5672/
	rbConfig.Heartbeat = time.Duration(time.Second * 30)                           // before rabbitmq connection is closed, try connecting again if rabbitmq connection disconnected

	connection, err := ampq.DialConfig(rbns, rbConfig)
	if err != nil {
		defer log.Fatalf("RABBITMQ NOT CONNECTED: %s", err.Error())
		defer connection.Close()
		return nil
	}

	defer log.Println("RABBITMQ CONNECTED")
	return &rabbitmq{connection: connection}
}

/**
*===========================================
* HANDLER METHOD - Consumer
* ===========================================
* Consume every data publishe from publisher
*============================================
**/

func (h *rabbitmq) Consumer(eventName string) (queueResponse, bool) {
	channel, err := h.connection.Channel()
	if err != nil {
		defer func() {
			log.Printf("Rabbitmq channel error: %s", err.Error())
			channel.Close() // close connection if rabbitmq not connected after heartbeat
		}()
		isConsumed = false
	}

	// overwrite routing key default name
	routingKey = eventName

	queue, err := channel.QueueDeclare(exchangeName, true, false, true, false, nil)
	if err != nil {
		defer log.Printf("Prepare queue into broker error: %s", err.Error())
		isConsumed = false
	}

	if err := channel.QueueBind(queue.Name, routingKey, exchangeName, false, nil); err != nil {
		defer log.Printf("Binding queue into routing key error: %s", err.Error())
		isConsumed = false
	}

	res, err := channel.Consume(eventName, "", true, true, false, false, nil)
	if err != nil {
		defer log.Printf("Consumed message from publisher error: %s", err.Error())
		isConsumed = false
	}

	// check publishing data from queue is exist or not before consuming
	if err := channel.Ack(0, true); err != nil {
		defer log.Printf("Consumed data into queue error: %s", err.Error())
		isPublished = false
	}

	msg := <-res
	if err := json.Unmarshal(msg.Body, &rbResponse.Items); err != nil {
		defer log.Printf("Parse response queue into queueResponse error: %s", err.Error())
		isConsumed = false
	}

	defer log.Printf(`RABBITMQ CONSUMER LOGS:
	Exchange Name: %s
	Routing Name: %s
	Event Name: %s
	Response: %v
`, exchangeName, routingKey, eventName, rbResponse.Items)

	return rbResponse, isConsumed
}

Popularity 9/10 Helpfulness 1/10 Language go

Source: Grepper

Tags: go rabbitmq rabbitm

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Contributed on Dec 27 2022

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

golang rabbitmq rpc

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golang rabbitmq rpc

https://pastebin.com/p9RpgTYN

Popularity 7/10 Helpfulness 1/10 Language whatever

Source: Grepper

Tags: rabbitmq rpc whatever whate

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Contributed on Feb 25 2023

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

rabbitmq golang

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