Sending a Message to All Amazon SNS Topic Subscribers

The following example sends the message supplied on the command line to all subscribers to the Amazon SNS topic with the ARN specified on the command line.

package main

import (
    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/service/sns"

    "flag"
    "fmt"
    "os"
)

func main() {
    msgPtr := flag.String("m", "", "The message to send to the subscribed users of the topic")
    topicPtr := flag.String("t", "", "The ARN of the topic to which the user subscribes")

    flag.Parse()

    if *msgPtr == "" || *topicPtr == "" {
        fmt.Println("You must supply a message and topic ARN")
        fmt.Println("Usage: go run SnsPublish.go -m MESSAGE -t TOPIC-ARN")
        os.Exit(1)
    }

    // Initialize a session that the SDK will use to load
    // credentials from the shared credentials file. (~/.aws/credentials).
    sess := session.Must(session.NewSessionWithOptions(session.Options{
        SharedConfigState: session.SharedConfigEnable,
    }))

    svc := sns.New(sess)

    result, err := svc.Publish(&sns.PublishInput{
        Message:  msgPtr,
        TopicArn: topicPtr,
    })
    if err != nil {
        fmt.Println(err.Error())
        os.Exit(1)
    }

    fmt.Println(*result.MessageId)
}

See the complete example on GitHub.