Get a link to an object

You can:

• get a link to an object in a public bucket — all objects are available via public domains of the storage;
• get a link to an object in a private bucket — you can make the link permanent or temporary.

We do not recommend using Cyrillic in object names. If you do use Cyrillic, encode the Cyrillic part of the link when working with links to such objects.

Get a link to an object in a public bucket

1. In the control panel, on the top menu, click Products and select S3.
2. Go to Buckets.
3. Open the bucket page → Objects tab.
4. In the object row, click .
5. In the link row, click .

Get a link to an object in a private bucket

You can:

• create a permanent or temporary link in the control panel. The link will be saved in a special bucket links as an object with the same name as the object the link points to. The object will be accessible via the bucket public domain links;
• obtain a temporary link via a presigned URL;
• obtain a permanent link via a script;
• obtain a permanent or temporary link using tools, for example, Rclone, AWS CLI, Cyberduck and S3 Browser.

Create a link in the control panel

You can get a temporary or permanent link to an object in a private bucket.

An object in a private bucket will be available via a link like https://<bucket_public_domain>/<object_name>, where:

• <bucket_public_domain> — the bucket public domain;
• <object_name> — the object name.

When you create a link to an object in a private bucket for the first time, a public bucket named links is automatically created in the project. The created link is added to it as an object with the same name as the main object. Objects in the links bucket have zero size and do not consume storage volume. If you configure the link as temporary, the object with the link will be automatically deleted from the links bucket once the link stops working.

To create a link:

1. In the control panel, on the top menu, click Products and select S3.

2. Перейдите in раздел Бакеты.

3. Откройте страницу бакета → вкладка Объекты.

4. In the object menu, select Make public.

5. optional: in поле Адрес ссылки измените имя объекта, которое будет отображаться in ссылке, or оставьте текущее.

6. optional: чтобы по ссылке можно было перейти только один раз, отметьте чекбокс Одноразовая ссылка.

7. Optional: to limit the link duration, select the Time limits checkbox and choose one of the options:

   • Delete after — the link will stop working after the selected time interval after creation;
   • Delete at a specified time — the link will stop working at the selected date and time.

8. Click Create link.

9. Чтобы скопировать ссылку, нажмите . Вы сможете скопировать ее позднее in бакете links.

Get a temporary link via a signed URL

С помощью подписанных URL (Presigned URLs) AWS SDK можно получить временную ссылку on объект. Подробнее in инструкции Sharing objects with presigned URLs документации AWS.

Python

Script example:

import boto3

ACCESS_KEY = "<access_key>"      
SECRET_KEY = "<secret_key>"      
ENDPOINT_URL = "<s3_domain>" 
BUCKET_NAME = "<bucket_name>"       
OBJECT_KEY = "<path_to_object>"      
EXPIRES_IN = "<time>"

s3 = boto3.client(
    "s3",
    aws_access_key_id=ACCESS_KEY,
    aws_secret_access_key=SECRET_KEY,
    endpoint_url=ENDPOINT_URL,
)

url = s3.generate_presigned_url(
    ClientMethod="get_object",
    Params={"Bucket": BUCKET_NAME, "Key": OBJECT_KEY},
    ExpiresIn=EXPIRES_IN
)

print("\PresignedUrl
:")
print(url)

Specify:

• <access_key> — the value of the Access key field from the S3 key;
• <secret_key> — the value of the Secret key field from the S3 key;
• <s3_domain> — the S3 API domain depending on the pool where the bucket is located;
• <bucket_name> — the bucket name;
• <path_to_object> — the path to the object in the bucket;
• <time> — the link duration in seconds.

PHP

Script example:

<?php
require 'vendor/autoload.php';

use Aws\S3\S3Client;
use Aws\Exception\AwsException;

$servercoreS3 = new S3Client([
    'version' => 'latest',
    'region'  => '<pool>',
    'endpoint' => '<s3_domain>':,
    'use_path_style_endpoint' => true,
    'credentials' => [
        'key'    => '<access_key>',
        'secret' => '<secret_key>',
    ],
]);

$bucket = '<bucket_name>';
$key = '<path_to_object>';

try {
    $cmd = $servercoreS3->getCommand('GetObject', [
        'Bucket' => $bucket,
        'Key'    => $key
    ]);

    $request = $servercoreS3->createPresignedRequest($cmd, '<time>');
    $presignedUrl = (string)$request->getUri();

    echo "Public link: $presignedUrl\n";
} catch (AwsException $e) {
    echo "Error generating link: " . $e->getMessage() . "\n";
}

Specify:

• <pool> — the pool where the bucket is located;
• <s3_domain> — the S3 API domain depending on the pool where the bucket is located;
• <access_key> — the value of the Access key field from the S3 key;
• <secret_key> — the value of the Secret key field from the S3 key;
• <bucket_name> — the bucket name;
• <path_to_object> — the path to the object in the bucket;
• <time> — время действия ссылки, например +1 hour.

JavaScript

Script example:

import { S3Client, GetObjectCommand } from "@aws-sdk/client-s3";
import { getSignedUrl } from "@aws-sdk/s3-request-presigner";

const client = new S3Client({
region: "<pool>",
endpoint: "<s3_domain>",
forcePathStyle: true,
credentials: {
    accessKeyId: "<access_key>",
    secretAccessKey: "<secret_key>",
},
});

async function generatePresignedUrl() {
const bucket = "<bucket_name>";   
const key = "<path_to_object>";          

const command = new GetObjectCommand({ Bucket: bucket, Key: key });

const url = await getSignedUrl(client, command, { expiresIn: <time> });
console.log("Presigned URL:", url);
}

generatePresignedUrl().catch(console.error);

Specify:

• <pool> — the pool where the bucket is located;
• <s3_domain> — the S3 API domain depending on the pool where the bucket is located;
• <access_key> — the value of the Access key field from the S3 key;
• <secret_key> — the value of the Secret key field from the S3 key;
• <bucket_name> — the bucket name;
• <path_to_object> — the path to the object in the bucket;
• <time> — the link duration in seconds.

Java

Script example:

package com.example;

import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.GetObjectRequest;
import software.amazon.awssdk.services.s3.model.S3Exception;
import software.amazon.awssdk.services.s3.presigner.S3Presigner;
import software.amazon.awssdk.services.s3.presigner.model.GetObjectPresignRequest;
import software.amazon.awssdk.services.s3.presigner.model.PresignedGetObjectRequest;

import java.net.URI;
import java.time.Duration;

public class ServercoreS3PresignedUrlGenerator {
    public static void main(String[] args) {

        String endpoint = "<s3_domain>"; 
        String region = "<pool>";
        String accessKey = "<access_key>";
        String secretKey = "<secret_key>";
        String bucketName = "<bucket_name>";
        String objectKey = "<path_to_object>";

        StaticCredentialsProvider credentials = StaticCredentialsProvider.create(
                AwsBasicCredentials.create(accessKey, secretKey)
        );

        S3Client s3Client = S3Client.builder()
                .endpointOverride(URI.create(endpoint))
                .region(Region.of(region))
                .credentialsProvider(credentials)
                .build();

        S3Presigner presigner = S3Presigner.builder()
                .endpointOverride(URI.create(endpoint))
                .region(Region.of(region))
                .credentialsProvider(credentials)
                .build();

        try {
            GetObjectRequest getObjectRequest = GetObjectRequest.builder()
                    .bucket(bucketName)
                    .key(objectKey)
                    .build();

            GetObjectPresignRequest presignRequest = GetObjectPresignRequest.builder()
                    .signatureDuration(Duration.ofMinutes(<time>))
                    .getObjectRequest(getObjectRequest)
                    .build();

            PresignedGetObjectRequest presignedRequest = presigner.presignGetObject(presignRequest);

            System.out.println("Presigned URL: " + presignedRequest.url());
            System.out.println("Expires at: " + presignedRequest.expiration());

        } catch (S3Exception e) {
            System.err.println("Error generating presigned URL: " + e.awsErrorDetails().errorMessage());
        } finally {
            s3Client.close();
            presigner.close();
        }
    }
}

Specify:

• <s3_domain> — the S3 API domain depending on the pool where the bucket is located;
• <pool> — the pool where the bucket is located;
• <access_key> — the value of the Access key field from the S3 key;
• <secret_key> — the value of the Secret key field from the S3 key;
• <bucket_name> — the bucket name;
• <path_to_object> — the path to the object in the bucket;
• <time> — the link duration in minutes.

Go

Script example:

package main 
import (
    "context"
    "fmt"
    "log"
    "time"
    "github.com/aws/aws-sdk-go-v2/aws"
    "github.com/aws/aws-sdk-go-v2/config"
    "github.com/aws/aws-sdk-go-v2/credentials"
    "github.com/aws/aws-sdk-go-v2/service/s3"
)
func main() {
    cfg, err := config.LoadDefaultConfig(context.TODO(),
        config.WithCredentialsProvider(
            credentials.NewStaticCredentialsProvider("<access_key>", "<secret_key>", ""),
        ),
    )
    if err != nil {
        log.Fatal(err.Error())
    }
    client := s3.NewFromConfig(cfg, func(o *s3.Options) {
        o.BaseEndpoint = aws.String("<s3_domain>")
        o.Region = "<pool>"
    })
    presignClient := s3.NewPresignClient(client)
    req, err := presignClient.PresignGetObject(context.TODO(), &s3.GetObjectInput{
        Bucket: aws.String("<bucket_name>"),
        Key:    aws.String("<path_to_object>"),
    }, s3.WithPresignExpires(<time>))
    if err != nil {
        log.Fatal(err.Error())
    }
    fmt.Println("Public link:", req.URL)
}

Specify:

• <access_key> — the value of the Access key field from the S3 key;
• <secret_key> — the value of the Secret key field from the S3 key;
• <s3_domain> — the S3 API domain depending on the pool where the bucket is located;
• <pool> — the pool where the bucket is located;
• <bucket_name> — the bucket name;
• <path_to_object> — the path to the object in the bucket;
• <time> — the link duration, for example, 24*time.Hour.

Get a permanent link via a script

Python

Script example:

import boto3

def get_public_url(bucket_uuid: str, object_key: str) -> str:
    
    return f"https://{bucket_uuid}.selstorage.ru/{object_key}"

if __name__ == "<file_name>":
    bucket_uuid = "<uuid>"
    object_key = "<path_to_object>"
    url = get_public_url(bucket_uuid, object_key)
    print("Public URL:", url)

Specify:

• <file_name> — the Python file name;
• <uuid> — the unique bucket identifier, can be viewed in the bucket public domain;
• <path_to_object> — the path to the object in the bucket.

PHP

Script example:

<?php
function get_public_url(string $bucket_uuid, string $object_key): string {
    return "https://{$bucket_uuid}.selstorage.ru/{$object_key}";
}

$bucket_uuid = "<uuid>";
$object_key = "<path_to_object>";

$public_url = get_public_url($bucket_uuid, $object_key);
echo "Public URL: " . $public_url . PHP_EOL;

Specify:

• <uuid> — the unique bucket identifier, can be viewed in the bucket public domain;
• <path_to_object> — путь к объекту in бакете.

JavaScript

Script example:

function getPublicUrl(bucketUuid, objectKey) {
    return `https://${bucketUuid}.selstorage.ru/${objectKey}`;
}

const bucketUuid = "<uuid>";
const objectKey = "<path_to_object>";

const publicUrl = getPublicUrl(bucketUuid, objectKey);
console.log("Public URL:", publicUrl);

Specify:

• <uuid> — the unique bucket identifier, can be viewed in the bucket public domain;
• <path_to_object> — путь к объекту in бакете.

Java

Script example:

public class ServercorePublicLink {

    public static String getPublicUrl(String bucketUuid, String objectKey) {
        return "https://" + bucketUuid + ".selstorage.ru/" + objectKey;
    }

    public static void main(String[] args) {

        String bucketUuid = "<uuid>";
        String objectKey = "<path_to_object>";

        String publicUrl = getPublicUrl(bucketUuid, objectKey);
        System.out.println("Public URL: " + publicUrl);
    }
}

Specify:

• <uuid> — the unique bucket identifier, can be viewed in the bucket public domain;
• <path_to_object> — путь к объекту in бакете.

Go

Script example:

package main

import (
    "fmt"
)

func getPublicURL(bucketUUID, objectKey string) string {
    return fmt.Sprintf("https://%s.selstorage.ru/%s", bucketUUID, objectKey)
}

func main() {

    bucketUUID := "<uuid>"
    objectKey := "<path_to_object>"

    publicURL := getPublicURL(bucketUUID, objectKey)
    fmt.Println("Public URL:", publicURL)
}

Specify:

• <uuid> — the unique bucket identifier, can be viewed in the bucket public domain;
• <path_to_object> — путь к объекту in бакете.