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/*
* Copyright (c) 2013 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Seth Hoenig
* Allan Stockdill-Mander
* Mike Robertson
*/
package main
import (
"flag"
"fmt"
"os"
MQTT "github.com/eclipse/paho.mqtt.golang"
)
/*
Options:
[-help] Display help
[-a pub|sub] Action pub (publish) or sub (subscribe)
[-m <message>] Payload to send
[-n <number>] Number of messages to send or receive
[-q 0|1|2] Quality of Service
[-clean] CleanSession (true if -clean is present)
[-id <clientid>] CliendID
[-user <user>] User
[-password <password>] Password
[-broker <uri>] Broker URI
[-topic <topic>] Topic
[-store <path>] Store Directory
*/
func main() {
topic := flag.String("topic", "", "The topic name to/from which to publish/subscribe")
broker := flag.String("broker", "tcp://iot.eclipse.org:1883", "The broker URI. ex: tcp://10.10.1.1:1883")
password := flag.String("password", "", "The password (optional)")
user := flag.String("user", "", "The User (optional)")
id := flag.String("id", "testgoid", "The ClientID (optional)")
cleansess := flag.Bool("clean", false, "Set Clean Session (default false)")
qos := flag.Int("qos", 0, "The Quality of Service 0,1,2 (default 0)")
num := flag.Int("num", 1, "The number of messages to publish or subscribe (default 1)")
payload := flag.String("message", "", "The message text to publish (default empty)")
action := flag.String("action", "", "Action publish or subscribe (required)")
store := flag.String("store", ":memory:", "The Store Directory (default use memory store)")
flag.Parse()
if *action != "pub" && *action != "sub" {
fmt.Println("Invalid setting for -action, must be pub or sub")
return
}
if *topic == "" {
fmt.Println("Invalid setting for -topic, must not be empty")
return
}
fmt.Printf("Sample Info:\n")
fmt.Printf("\taction: %s\n", *action)
fmt.Printf("\tbroker: %s\n", *broker)
fmt.Printf("\tclientid: %s\n", *id)
fmt.Printf("\tuser: %s\n", *user)
fmt.Printf("\tpassword: %s\n", *password)
fmt.Printf("\ttopic: %s\n", *topic)
fmt.Printf("\tmessage: %s\n", *payload)
fmt.Printf("\tqos: %d\n", *qos)
fmt.Printf("\tcleansess: %v\n", *cleansess)
fmt.Printf("\tnum: %d\n", *num)
fmt.Printf("\tstore: %s\n", *store)
opts := MQTT.NewClientOptions()
opts.AddBroker(*broker)
opts.SetClientID(*id)
opts.SetUsername(*user)
opts.SetPassword(*password)
opts.SetCleanSession(*cleansess)
if *store != ":memory:" {
opts.SetStore(MQTT.NewFileStore(*store))
}
if *action == "pub" {
client := MQTT.NewClient(opts)
if token := client.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
fmt.Println("Sample Publisher Started")
for i := 0; i < *num; i++ {
fmt.Println("---- doing publish ----")
token := client.Publish(*topic, byte(*qos), false, *payload)
token.Wait()
}
client.Disconnect(250)
fmt.Println("Sample Publisher Disconnected")
} else {
receiveCount := 0
choke := make(chan [2]string)
opts.SetDefaultPublishHandler(func(client MQTT.Client, msg MQTT.Message) {
choke <- [2]string{msg.Topic(), string(msg.Payload())}
})
client := MQTT.NewClient(opts)
if token := client.Connect(); token.Wait() && token.Error() != nil {
panic(token.Error())
}
if token := client.Subscribe(*topic, byte(*qos), nil); token.Wait() && token.Error() != nil {
fmt.Println(token.Error())
os.Exit(1)
}
for receiveCount < *num {
incoming := <-choke
fmt.Printf("RECEIVED TOPIC: %s MESSAGE: %s\n", incoming[0], incoming[1])
receiveCount++
}
client.Disconnect(250)
fmt.Println("Sample Subscriber Disconnected")
}
}
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