From 8446b578c271448e2a23f4b2152f2d6311168e82 Mon Sep 17 00:00:00 2001
From: Nam Huynh <namhq.1989@gmail.com>
Date: Sat, 26 Mar 2022 00:00:58 +0700
Subject: [PATCH 1/3] dont create consumer if existed

---
 jetstream_consumer.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/jetstream_consumer.go b/jetstream_consumer.go
index da38249..b59df80 100644
--- a/jetstream_consumer.go
+++ b/jetstream_consumer.go
@@ -14,10 +14,17 @@ func (js JetStream) GetConsumerInfo(stream, name string) (*nats.ConsumerInfo, er
 
 // AddConsumer ...
 func (js JetStream) AddConsumer(stream, subject, name string) error {
+	// Get consumer first, return if existed
+	consumer, err := js.GetConsumerInfo(stream, name)
+	if consumer != nil {
+		return nil
+	}
+
+	// Generate channel name
 	channel := combineStreamAndSubjectName(stream, subject)
 
 	// Add
-	_, err := js.instance.AddConsumer(stream, &nats.ConsumerConfig{
+	_, err = js.instance.AddConsumer(stream, &nats.ConsumerConfig{
 		Durable:       name,
 		AckPolicy:     nats.AckExplicitPolicy,
 		FilterSubject: channel,

From eab463ab57b60c5845e8eadde144b2bb0490bda0 Mon Sep 17 00:00:00 2001
From: Nam Huynh <namhq.1989@gmail.com>
Date: Tue, 12 Apr 2022 17:21:52 +0700
Subject: [PATCH 2/3] update

---
 server_reqres.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server_reqres.go b/server_reqres.go
index 303c954..deb9b88 100644
--- a/server_reqres.go
+++ b/server_reqres.go
@@ -21,7 +21,7 @@ func (sv Server) Reply(msg *nats.Msg, payload []byte) error {
 	err := sv.instance.Publish(msg.Reply, payload)
 
 	// Ack message
-	msg.Ack()
+	// msg.Ack()
 	return err
 }
 

From b5f1a7e93e41030f99d38b492451d83aea6ed7c4 Mon Sep 17 00:00:00 2001
From: Nam Huynh <namhq.1989@gmail.com>
Date: Tue, 12 Apr 2022 17:39:27 +0700
Subject: [PATCH 3/3] remove ack git reply func

---
 server_reqres.go | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/server_reqres.go b/server_reqres.go
index deb9b88..e099a41 100644
--- a/server_reqres.go
+++ b/server_reqres.go
@@ -18,11 +18,7 @@ func (sv Server) Request(subject string, payload []byte) (*nats.Msg, error) {
 
 // Reply ...
 func (sv Server) Reply(msg *nats.Msg, payload []byte) error {
-	err := sv.instance.Publish(msg.Reply, payload)
-
-	// Ack message
-	// msg.Ack()
-	return err
+	return sv.instance.Publish(msg.Reply, payload)
 }
 
 // Subscribe ...