From 72f7fec2a4096a6c2b3359df6622bda2d419665b Mon Sep 17 00:00:00 2001
From: Jarema <melgaer@gmail.com>
Date: Thu, 17 Jun 2021 09:00:23 +0200
Subject: [PATCH] Add utility function for setting domain

---
 js.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/js.go b/js.go
index f4b532b0b..a3fa70f22 100644
--- a/js.go
+++ b/js.go
@@ -35,6 +35,9 @@ const (
 	// defaultAPIPrefix is the default prefix for the JetStream API.
 	defaultAPIPrefix = "$JS.API."
 
+	// jsDomainT is used to create JetStream API prefix by specifying only Domain
+	jsDomainT = "$JS.%s.API."
+
 	// apiAccountInfo is for obtaining general information about JetStream.
 	apiAccountInfo = "INFO"
 
@@ -200,6 +203,11 @@ func (opt jsOptFn) configureJSContext(opts *jsOpts) error {
 	return opt(opts)
 }
 
+// Domain changes the domain part of JetSteam API prefix.
+func Domain(domain string) JSOpt {
+	return APIPrefix(fmt.Sprintf(jsDomainT, domain))
+}
+
 // APIPrefix changes the default prefix used for the JetStream API.
 func APIPrefix(pre string) JSOpt {
 	return jsOptFn(func(js *jsOpts) error {