【Text-to-Speech × Go】テキストから音声合成し、AWS S3にアップロードする

go get cloud.google.com/go/texttospeech/apiv1

package clocky_be

import (
	"context"
	"log"
	"os"

	texttospeech "cloud.google.com/go/texttospeech/apiv1"
	texttospeechpb "cloud.google.com/go/texttospeech/apiv1/texttospeechpb"
)

func SynthesizeSpeech(text, filename string) error {
	// Instantiates a client.
	ctx := context.Background()

	client, err := texttospeech.NewClient(ctx)
	if err != nil {
		return err
	}
	defer client.Close()

	req := texttospeechpb.SynthesizeSpeechRequest{
		Input: &texttospeechpb.SynthesisInput{
			InputSource: &texttospeechpb.SynthesisInput_Text{Text: text},
		},
		Voice: &texttospeechpb.VoiceSelectionParams{
			LanguageCode: "ja-JP",
			SsmlGender:   texttospeechpb.SsmlVoiceGender_FEMALE,
		},
		AudioConfig: &texttospeechpb.AudioConfig{
			AudioEncoding: texttospeechpb.AudioEncoding_MP3,
		},
	}

	resp, err := client.SynthesizeSpeech(ctx, &req)
	if err != nil {
		return err
	}

	err = os.WriteFile(filename, resp.AudioContent, 0644)
	if err != nil {
		return err
	}

	log.Printf("Audio content written to file: %vn", filename)
	return nil
}

go get github.com/aws/aws-sdk-go/aws
go get github.com/aws/aws-sdk-go/aws/session

import (
    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/service/s3"
)

func UploadFileToS3(sess *session.Session, bucketName, folderPath, fileName string) error {
	// S3サービスクライアントの作成
	s3Svc := s3.New(sess)

	// ファイルを開く
	file, err := os.Open(fileName)
	if err != nil {
		return err
	}
	defer file.Close()

	// フォルダパスを含むキーの作成
	key := folderPath + "/" + fileName

	// S3にファイルをアップロード
	_, err = s3Svc.PutObject(&s3.PutObjectInput{
		Bucket: aws.String(bucketName),
		Key:    aws.String(key),
		Body:   file,
	})
	return err
}

package main

import (
	"log"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/credentials"
	"github.com/aws/aws-sdk-go/aws/session"
)

func main() {
	config := clocky.NewConfig()

	// AWSセッションの作成
	awsSession, err := session.NewSession(&aws.Config{
		Region:      aws.String(config.AWSRegion),
		Credentials: credentials.NewStaticCredentials(config.AWSAccessKey, config.AWSSecretKey, ""),
	})
	if err != nil {
		log.Fatalf("Failed to create AWS session: %v", err)
	}

	// 音声変換とS3アップロードの処理
	text := "おはようございます"
	fileName := "output.mp3"
	folderPath := "weather"
	if err := clocky.SynthesizeSpeech(text, fileName); err != nil {
		log.Fatalf("Failed to synthesize speech: %v", err)
	}
	if err := clocky.UploadFileToS3(awsSession, config.AWSS3Bucket, folderPath, fileName); err != nil {
		log.Fatalf("Failed to upload file to S3: %v", err)
	}

}