curl -I "https://mybucket.storage.nami.cloud/example.jpg" \
  -H "Authorization: AWS4-HMAC-SHA256 Credential=AKIAIOSFODNN7EXAMPLE/20231028/us-east-1/s3/aws4_request, SignedHeaders=host;x-amz-date, Signature=fe5f80f77d5fa3beca038a248ff027d0445342fe2855ddc963176630326f1024"

import boto3

s3_client = boto3.client('s3',
    endpoint_url='https://storage.nami.cloud',
    aws_access_key_id='YOUR_ACCESS_KEY',
    aws_secret_access_key='YOUR_SECRET_KEY'
)

response = s3_client.head_object(
    Bucket='mybucket',
    Key='example.jpg'
)

print(f"コンテンツの長さ: {response['ContentLength']}")
print(f"最終更新日: {response['LastModified']}")
print(f"ETag: {response['ETag']}")

import { S3Client, HeadObjectCommand } from "@aws-sdk/client-s3";

const client = new S3Client({
  endpoint: "https://storage.nami.cloud",
  credentials: {
    accessKeyId: "YOUR_ACCESS_KEY",
    secretAccessKey: "YOUR_SECRET_KEY",
  },
});

async function getObjectMetadata() {
  const command = new HeadObjectCommand({
    Bucket: "mybucket",
    Key: "example.jpg",
  });

  try {
    const response = await client.send(command);
    console.log("コンテンツの長さ:", response.ContentLength);
    console.log("最終更新日:", response.LastModified);
    console.log("ETag:", response.ETag);
  } catch (err) {
    console.error("エラー:", err);
  }
}

getObjectMetadata();

package main

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

func main() {
    sess := session.Must(session.NewSession(&aws.Config{
        Endpoint:    aws.String("https://storage.nami.cloud"),
        Region:      aws.String("us-east-1"),
        Credentials: credentials.NewStaticCredentials("YOUR_ACCESS_KEY", "YOUR_SECRET_KEY", ""),
    }))

    s3Client := s3.New(sess)

    result, err := s3Client.HeadObject(&s3.HeadObjectInput{
        Bucket: aws.String("mybucket"),
        Key:    aws.String("example.jpg"),
    })
    if err != nil {
        panic(err)
    }

    fmt.Printf("コンテンツの長さ: %d\n", *result.ContentLength)
    fmt.Printf("最終更新日: %v\n", *result.LastModified)
    fmt.Printf("ETag: %s\n", *result.ETag)
}

use aws_sdk_s3::{Client, Config};
use aws_config::credentials::StaticCredentialsProvider;
use aws_types::region::Region;
use tokio;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let credentials = StaticCredentialsProvider::new(
        "YOUR_ACCESS_KEY".to_string(),
        "YOUR_SECRET_KEY".to_string(),
        None,
    );

    let config = Config::builder()
        .endpoint_url("https://storage.nami.cloud")
        .region(Region::new("us-east-1"))
        .credentials_provider(credentials)
        .build();

    let client = Client::from_conf(config);

    let response = client
        .head_object()
        .bucket("mybucket")
        .key("example.jpg")
        .send()
        .await?;

    println!("コンテンツの長さ: {}", response.content_length().unwrap());
    println!("最終更新日: {:?}", response.last_modified().unwrap());
    println!("ETag: {}", response.e_tag().unwrap());

    Ok(())
}