update json encoder

constant.go

@@ -1,13 +1,15 @@
 package natsio
 
 var AllStreams = struct {
-	ChangeStream string
+	MongoCDC string
+	Export   string
 }{
-	ChangeStream: "change_stream",
+	MongoCDC: "mongo_cdc",
+	Export:   "export",
 }
 
 var AllServers = struct {
-	MongoCDC string
+	Main string
 }{
-	MongoCDC: "mongo_cdc",
+	Main: "main",
 }

json_encoder.go

@@ -0,0 +1,44 @@
+package natsio
+
+import (
+	"log"
+
+	"github.com/nats-io/nats.go"
+)
+
+// JSONEncoder ...
+type JSONEncoder struct {
+	encConn *nats.EncodedConn
+}
+
+// Subscribe ...
+func (e JSONEncoder) Subscribe(subject string, cb nats.Handler) (*nats.Subscription, error) {
+	sub, err := e.encConn.Subscribe(subject, cb)
+	if err != nil {
+		log.Printf("natsio.JSONEncoder.Subscribe err: %v\n", err)
+	} else {
+		log.Printf("natsio.JSONEncoder - subscribed to subject %s successfully\n", subject)
+	}
+	return sub, err
+}
+
+// QueueSubscribe ...
+func (e JSONEncoder) QueueSubscribe(subject, queue string, cb nats.Handler) (*nats.Subscription, error) {
+	sub, err := e.encConn.QueueSubscribe(subject, queue, cb)
+	if err != nil {
+		log.Printf("natsio.JSONEncoder.QueueSubscribe err: %v\n", err)
+	} else {
+		log.Printf("natsio.JSONEncoder.QueueSubscribe - subscribed to subject %s successfully\n", subject)
+	}
+	return sub, err
+}
+
+// Publish ...
+func (e JSONEncoder) Publish(reply string, data interface{}) error {
+	return e.encConn.Publish(reply, data)
+}
+
+// Request ...
+func (e JSONEncoder) Request(subject string, data interface{}, res interface{}) error {
+	return e.encConn.Request(subject, data, res, requestTimeout)
+}