From 24a487a4a9b7c001f60aeb38fc423f8e6de0a252 Mon Sep 17 00:00:00 2001
From: Rafael Bonin <rafabonin04@gmail.com>
Date: Wed, 25 Sep 2024 18:57:05 -0300
Subject: [PATCH] reverts changes

---
 internal/events/rabbitmq/consumer/declares.go | 123 +++---------------
 1 file changed, 17 insertions(+), 106 deletions(-)

diff --git a/internal/events/rabbitmq/consumer/declares.go b/internal/events/rabbitmq/consumer/declares.go
index 840316e..8311afd 100644
--- a/internal/events/rabbitmq/consumer/declares.go
+++ b/internal/events/rabbitmq/consumer/declares.go
@@ -1,79 +1,28 @@
 package consumer
 
 import (
-	"math"
-	"strings"
-	"time"
-
 	"github.com/rabbitmq/amqp091-go"
 	"github.com/rotisserie/eris"
 )
 
 func (r *rabbitmqConsumer) declare(routingKeys []string) error {
-	err := r.declareAttempt(routingKeys, true)
-	if err == nil {
-		// If there is no error, then the declaration was successful
-		r.logger.Info().Msg("successfully declared queues with DLX")
-		return nil
-	}
+	r.chManager.ChannelMux.RLock()
+	defer r.chManager.ChannelMux.RUnlock()
 
-	err = r.closeChannelAndWaitForReconnect()
+	dlxName := r.config.QueueName + "_dlx"
+	err := r.deadLetterDeclare(dlxName)
 	if err != nil {
-		return eris.Wrap(err, "closeChannelAndWaitForReconnect")
+		return eris.Wrap(err, "failed to declare dead letter")
 	}
 
-	err = r.declareAttempt(routingKeys, false)
+	err = r.queueDeclare(dlxName)
 	if err != nil {
-		return eris.Wrap(err, "declareAttempt - second attempt")
-	}
-
-	r.logger.Info().Msg("successfully declared queues without DLX")
-	return nil
-}
-
-func (r *rabbitmqConsumer) closeChannelAndWaitForReconnect() error {
-	// Wait for the channel to close - this is a workaround for the channel not closing immediately
-	// Check if the channel is open with backoff
-
-	r.chManager.Channel.Close()
-	time.Sleep(2 * time.Second)
-
-	const maxAttempts = 5
-	const backoffFactor = 2
-	for i := 1; i <= maxAttempts; i++ {
-		if r.chManager.Channel.IsClosed() {
-			x := math.Pow(backoffFactor, float64(i))
-			time.Sleep(time.Duration(x) * time.Second)
-
-			i++
-		}
-	}
-	if r.chManager.Channel.IsClosed() {
-		return eris.New("failed to reconnect to the amqp channel in time for subscriber")
-	}
-
-	return nil
-}
-
-func (r *rabbitmqConsumer) declareAttempt(routingKeys []string, useDLX bool) error {
-	r.chManager.ChannelMux.RLock()
-	defer r.chManager.ChannelMux.RUnlock()
-
-	if useDLX {
-		err := r.declareQueuesWithDLX()
-		if err != nil {
-			return eris.Wrap(err, "declareQueuesWithDLX")
-		}
-	} else {
-		err := r.declareQueuesWithoutDLX()
-		if err != nil {
-			return eris.Wrap(err, "declareQueuesWithoutDLX")
-		}
+		return eris.Wrap(err, "failed to declare queue")
 	}
 
-	err := r.queueBindDeclare(routingKeys)
+	err = r.queueBindDeclare(routingKeys)
 	if err != nil {
-		return eris.Wrap(err, "queueBindDeclare")
+		return eris.Wrap(err, "failed to declare queue bind")
 	}
 
 	err = r.chManager.Channel.Qos(
@@ -86,31 +35,7 @@ func (r *rabbitmqConsumer) declareAttempt(routingKeys []string, useDLX bool) err
 	return nil
 }
 
-func (r *rabbitmqConsumer) declareQueuesWithDLX() error {
-	dlxName := r.config.QueueName + "_dlx"
-	err := r.deadLetterDeclare(dlxName)
-	if err != nil {
-		return eris.Wrap(err, "deadLetterDeclare")
-	}
-
-	err = r.queueDeclare(&dlxName)
-	if err != nil {
-		return eris.Wrap(err, "queueDeclare")
-	}
-
-	return nil
-}
-
-func (r *rabbitmqConsumer) declareQueuesWithoutDLX() error {
-	err := r.queueDeclare(nil)
-	if err != nil {
-		return eris.Wrap(err, "queueDeclare")
-	}
-
-	return nil
-}
-
-func (r *rabbitmqConsumer) queueDeclare(dlxName *string) error {
+func (r *rabbitmqConsumer) queueDeclare(dlxName string) error {
 	err := r.chManager.Channel.ExchangeDeclare(
 		r.config.ExchangeName,
 		"topic",
@@ -124,32 +49,18 @@ func (r *rabbitmqConsumer) queueDeclare(dlxName *string) error {
 		return eris.Wrap(err, "failed to declare exchange")
 	}
 
-	args := amqp091.Table{
-		amqp091.QueueTypeArg: amqp091.QueueTypeQuorum,
-	}
-	if dlxName != nil && *dlxName != "" {
-		args["x-dead-letter-exchange"] = dlxName
-	}
-
 	_, err = r.chManager.Channel.QueueDeclare(
 		r.config.QueueName,
 		true,
 		false,
 		false,
 		false,
-		args,
+		amqp091.Table{
+			"x-queue-type":           "quorum",
+			"x-dead-letter-exchange": dlxName,
+		},
 	)
 	if err != nil {
-		if strings.Contains(err.Error(), "PRECONDITION_FAILED") {
-			// Queue already exists - no need to redeclare
-			// RabbitMQ will force close, we want to wait for the channel to open again
-			err = r.closeChannelAndWaitForReconnect()
-			if err != nil {
-				return eris.Wrap(err, "closeChannelAndWaitForReconnect")
-			}
-
-			return nil
-		}
 		return eris.Wrap(err, "failed to declare queue")
 	}
 
@@ -184,7 +95,7 @@ func (r *rabbitmqConsumer) deadLetterDeclare(dlxName string) error {
 		nil,
 	)
 	if err != nil {
-		return eris.Wrap(err, "failed to declare DLX exchange")
+		return eris.Wrap(err, "failed to declare exchange")
 	}
 
 	_, err = r.chManager.Channel.QueueDeclare(
@@ -199,7 +110,7 @@ func (r *rabbitmqConsumer) deadLetterDeclare(dlxName string) error {
 		},
 	)
 	if err != nil {
-		return eris.Wrap(err, "failed to declare DLX queue")
+		return eris.Wrap(err, "failed to declare queue")
 	}
 
 	err = r.chManager.Channel.QueueBind(
@@ -210,7 +121,7 @@ func (r *rabbitmqConsumer) deadLetterDeclare(dlxName string) error {
 		nil,
 	)
 	if err != nil {
-		return eris.Wrap(err, "failed to bind DLX queue")
+		return eris.Wrap(err, "failed to bind queue")
 	}
 
 	return nil