Files
weave-scope/vendor/github.com/nats-io/nats/examples/nats-rply.go
Tom Wilkie a7b34f1601 Use NATS for shortcut reports in the service. (#1568)
* Vendor nats-io/nats

* Use NATS for shortcut reports.

* Review feedback.

* Rejig shortcut subscriptions, so they work.

* Review feedback
2016-06-09 12:48:41 +01:00

56 lines
1.0 KiB
Go

// Copyright 2012-2016 Apcera Inc. All rights reserved.
// +build ignore
package main
import (
"flag"
"log"
"runtime"
"github.com/nats-io/nats"
)
// NOTE: Use tls scheme for TLS, e.g. nats-rply -s tls://demo.nats.io:4443 foo hello
func usage() {
log.Fatalf("Usage: nats-rply [-s server][-t] <subject> <reponse>\n")
}
func printMsg(m *nats.Msg, i int) {
log.Printf("[#%d] Received on [%s]: '%s'\n", i, m.Subject, string(m.Data))
}
func main() {
var urls = flag.String("s", nats.DefaultURL, "The nats server URLs (separated by comma)")
var showTime = flag.Bool("t", false, "Display timestamps")
log.SetFlags(0)
flag.Usage = usage
flag.Parse()
args := flag.Args()
if len(args) < 2 {
usage()
}
nc, err := nats.Connect(*urls)
if err != nil {
log.Fatalf("Can't connect: %v\n", err)
}
subj, reply, i := args[0], args[1], 0
nc.Subscribe(subj, func(msg *nats.Msg) {
i++
printMsg(msg, i)
nc.Publish(msg.Reply, []byte(reply))
})
log.Printf("Listening on [%s]\n", subj)
if *showTime {
log.SetFlags(log.LstdFlags)
}
runtime.Goexit()
}