Torch Object Storage
Torch Object Storage
Torch Object Storage
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The header contains a signature
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Upload Object
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Pre-signature Mechanism
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Pre-signature Mechanism
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Upload object
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Pre-signature Mechanism
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Error Codes
01-SERVICE_ERROR
02-AUTH
03-ACCESS_CONTROL
04-QOS
05-REQUEST
06-BUCKET
07-LIFECYCLE
08-ACL
09-CORS
10-POLICY
11-MIRROR
12-REPLICATION
13-WEBSITE
14-NOTIFICATION
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18-TAG
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21-CALLBACK
22-DATA_PROCESS
23-BATCH
24-STORAGE_LENS
25-INVENTORY
26-DIRECTORY_BUCKET
FAQ
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AIGC-Doubao LLMs
Accessing TOS with third-party tools
Granting temporary access
Data migration
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Checking data integrity
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- Documentation
Torch Object StorageSDK ReferenceNode.jsPre-signature MechanismStandard Presigned URL (Node.js SDK)
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Standard Presigned URL (Node.js SDK)
Copy pageDownload PDFStandard Presigned URL (Node.js SDK)
By default, TosClient includes a signature in the request header when initiating a request to the server. The SDK also supports generating signed URLs, which can be used directly to initiate HTTP requests or shared with third parties to enable access authorization.
Sample Code
Uploading Objects Using Pre-Signed URLs
The following code is used to upload objects to a specified bucket via a pre-signed URL.
import { TosClient, TosClientError, TosServerError } from '@volcengine/tos-sdk';
import axios from 'axios';
const client = new TosClient({
accessKeyId: process.env['TOS_ACCESS_KEY'],
accessKeySecret: process.env['TOS_SECRET_KEY'],
region: "Provide your region",
endpoint: "Provide your endpoint",
});
function handleError(error) {
if (error instanceof TosClientError) {
console.log('Client Err Msg:', error.message);
console.log('Client Err Stack:', error.stack);
} else if (error instanceof TosServerError) {
console.log('Request ID:', error.requestId);
console.log('Response Status Code:', error.statusCode);
console.log('Response Header:', error.headers);
console.log('Response Err Code:', error.code);
console.log('Response Err Msg:', error.message);
} else {
console.log('unexpected exception, message: ', error);
}
}
async function main() {
try {
const bucketName = 'node-sdk-test-bucket';
const objectName = 'putObject-from-PreSignedUrl-test';
const url = client.getPreSignedUrl({
method: 'PUT',
bucket: bucketName,
key: objectName,
});
console.log('PreSignedUrl:', url);
const uploadResult = await axios.put(url, 'hello world from PreSignedUrl');
const { data } = await client.headObject({
bucket: bucketName,
key: objectName,
});
console.log('object size:', data['content-length']);
} catch (error) {
handleError(error);
}
}
main();
Downloading Objects Using Pre-Signed URLs
The following code is used to download an object from the specified bucket using a pre-signed URL.
import { TosClient, TosClientError, TosServerError } from '@volcengine/tos-sdk';
import axios from 'axios';
const client = new TosClient({
accessKeyId: process.env['TOS_ACCESS_KEY'],
accessKeySecret: process.env['TOS_SECRET_KEY'],
region: "Provide your region",
endpoint: "Provide your endpoint",
});
function handleError(error) {
if (error instanceof TosClientError) {
console.log('Client Err Msg:', error.message);
console.log('Client Err Stack:', error.stack);
} else if (error instanceof TosServerError) {
console.log('Request ID:', error.requestId);
console.log('Response Status Code:', error.statusCode);
console.log('Response Header:', error.headers);
console.log('Response Err Code:', error.code);
console.log('Response Err Msg:', error.message);
} else {
console.log('unexpected exception, message: ', error);
}
}
async function main() {
try {
const bucketName = 'node-sdk-test-bucket';
const objectName = 'putObject-from-PreSignedUrl-test';
const url = client.getPreSignedUrl({
method: 'GET',
bucket: bucketName,
key: objectName,
});
console.log('PreSignedUrl:', url);
const result = await axios.get(url);
console.log('get result:', result.data);
} catch (error) {
handleError(error);
}
}
main();
Deleting Objects Using Pre-Signed URLs
The following code is used to delete objects in a specified bucket via a pre-signed URL.
import { TosClient, TosClientError, TosServerError } from '@volcengine/tos-sdk';
import axios from 'axios';
const client = new TosClient({
accessKeyId: process.env['TOS_ACCESS_KEY'],
accessKeySecret: process.env['TOS_SECRET_KEY'],
region: "Provide your region",
endpoint: "Provide your endpoint",
});
function handleError(error) {
if (error instanceof TosClientError) {
console.log('Client Err Msg:', error.message);
console.log('Client Err Stack:', error.stack);
} else if (error instanceof TosServerError) {
console.log('Request ID:', error.requestId);
console.log('Response Status Code:', error.statusCode);
console.log('Response Header:', error.headers);
console.log('Response Err Code:', error.code);
console.log('Response Err Msg:', error.message);
} else {
console.log('unexpected exception, message: ', error);
}
}
async function main() {
try {
const bucketName = 'node-sdk-test-bucket';
const objectName = 'putObject-from-PreSignedUrl-test';
const url = client.getPreSignedUrl({
method: 'DELETE',
bucket: bucketName,
key: objectName,
});
console.log('PreSignedUrl:', url);
const result = await axios.delete(url);
console.log('delete result:', result);
} catch (error) {
handleError(error);
}
}
main();
Last updated: 2025.09.22 18:35:44
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