First version

v1.go

package main

import (
	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/polly"
	"github.com/chzyer/readline"
	"io/ioutil"
	"os"
	"os/exec"
)

func main() {
	// Create  readline instance
	l, err := readline.New(" > ")
	if err != nil {
		panic(err)
	}
	defer l.Close()

	// Create amazon polly client
	sess, err := session.NewSessionWithOptions(session.Options{
		Config: aws.Config{
			Region: aws.String("eu-central-1"),
		},
		Profile: "amazon-polly-profile",
		SharedConfigState: session.SharedConfigEnable,
	})
	if err != nil {
		panic(err)
	}
	client := polly.New(sess)

	// Do forever
	for {
		// Read a line from the user
		line, err := l.Readline()
		if err != nil {
			panic(err)
		}
		// Use amazon polly to synthesize speach
		input := &polly.SynthesizeSpeechInput{
			OutputFormat:    aws.String("ogg_vorbis"),
			Text:            aws.String(line),
			VoiceId:         aws.String("Marlene"),
		}
		result, err := client.SynthesizeSpeech(input)

		if err != nil {
			panic(err)
		}
		defer result.AudioStream.Close()

		// Write the resulting ogg to /tmp/test.ogg
		bytes, _ := ioutil.ReadAll(result.AudioStream)
		ioutil.WriteFile("/tmp/test.ogg", bytes, os.ModePerm)

		// Play the ogg using mplayer
		cmd := exec.Command("mplayer", "/tmp/test.ogg")
		cmd.Run()
	}
}