aws.go

package main

import (
	"context"
	"log"

	"github.com/aws/aws-sdk-go-v2/aws"
	"github.com/aws/aws-sdk-go-v2/config"
	"github.com/aws/aws-sdk-go-v2/service/s3"
)

func main() {
	cfg, err := config.LoadDefaultConfig(context.TODO(), config.WithRegion("us-east-1"))
	if err != nil {
		log.Fatal(err)
	}

	client := s3.NewFromConfig(cfg)

	output, err := client.ListObjectsV2(
		context.TODO(),
		&s3.ListObjectsV2Input{
			Bucket: aws.String("バケットの名前"),
		})

	if err != nil {
		log.Fatal(err)
	}

	log.Println("result")
	log.Printf("count %d", len(output.Contents))
	for _, object := range output.Contents {
		log.Printf("key=%s size=%d", aws.ToString(object.Key), object.Size)
	}
}

read.md

事前

AWS CLIとかでaws configureの設定をしておく。

goで必要なモジュールをinstallしておく

github.com/aws/aws-sdk-go-v2/aws
github.com/aws/aws-sdk-go-v2/config
github.com/aws/aws-sdk-go-v2/service/s3