box-o-sand/sylvilagus/go/sylvilagus-ch02-hello-world-producer/main.go

package main

import (
	"log"
	"os"
	"time"
)

import (
	"github.com/meatballhat/box-o-sand/sylvilagus/go/sylvilagus"
	"github.com/streadway/amqp"
)

func main() {
	if len(os.Args) < 2 {
		log.Fatal("You must provide a message as first arg!")
	}

	msgBody := string(os.Args[1])

	connection, err := amqp.Dial(sylvilagus.AMQP_URI)
	if err != nil {
		log.Fatal("Failed to connect!: ", err)
	}

	defer connection.Close()

	channel, err := sylvilagus.CreateHelloTopology(connection)
	if err != nil {
		log.Fatal("Failed to build topology!: ", err)
	}

	msg := amqp.Publishing{
		DeliveryMode: amqp.Persistent,
		Timestamp:    time.Now(),
		ContentType:  "text/plain",
		Body:         []byte(msgBody),
	}

	err = channel.Publish("hello-exchange", "hola", false, false, msg)
	if err != nil {
		log.Fatal("Failed to publish message!: ", err)
	} else {
		log.Printf("Published '%v'\n", msgBody)
	}
}