Torch Object Storage
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- Documentation
Torch Object StorageSDK ReferenceRustPre-signing mechanismPreSignedURL（Rust SDK）
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Download PDFPre-signing mechanism
PreSignedURL（Rust SDK）
Copy pageDownload PDFPreSignedURL（Rust SDK）
The pre_signed_url interface generates signed temporary upload or download URLs. This article explains how to obtain and directly access the object URL using the pre_signed_url interface in the Rust SDK.
Notes
- You must fill in the region and endpoint in the sample code according to your actual situation. For details, see Regions and endpoints.
- To prevent key leakage, this example reads the Access Key ID and Secret Access Key from environment variables. Before using the SDK, configure long-term access credentials. For details, see Configure long-term access credentials.
- The pre_signed_url validity period is controlled by the expires parameter in seconds, with a maximum of 7 days.
- When uploading with pre_signed_url, the http_method must match the method specified during generation; otherwise, a 403 error is returned.
Code example
Upload objects using a pre-signed URL
use async_trait::async_trait;
use futures_core::future::BoxFuture;
use std::env;
use std::future::Future;
use std::time::Duration;
use tokio::runtime::Handle;
use ve_tos_rust_sdk::common::init_tracing_log;
use ve_tos_rust_sdk::enumeration::{HttpMethodType};
use ve_tos_rust_sdk::asynchronous::tos;
use ve_tos_rust_sdk::asynchronous::tos::AsyncRuntime;
use ve_tos_rust_sdk::auth::{PreSignedURLInput, SignerAPI};
use reqwest::Client as HttpClient;
use ve_tos_rust_sdk::error::TosError;
#[derive(Debug, Default)]
pub struct TokioRuntime {}
#[async_trait]
impl AsyncRuntime for TokioRuntime {
type JoinError = tokio::task::JoinError;
async fn sleep(&self, duration: Duration) {
tokio::time::sleep(duration).await;
}
fn spawn<'a, F>(&self, future: F) -> BoxFuture<'a, Result<F::Output, Self::JoinError>>
where
F: Future + Send + 'static,
F::Output: Send + 'static,
{
Box::pin(Handle::current().spawn(future))
}
fn block_on<F: Future>(&self, future: F) -> F::Output {
Handle::current().block_on(future)
}
}
#[tokio::main]
async fn main() {
let _guard = init_tracing_log("info", "temp/logs", "app.log");
let ak = env::var("TOS_ACCESS_KEY").unwrap_or("".to_string());
let sk = env::var("TOS_SECRET_KEY").unwrap_or("".to_string());
let endpoint = "https://tos-cn-beijing.volces.com";
let region = "cn-beijing";
let client = tos::builder::<TokioRuntime>()
.connection_timeout(3000)
.request_timeout(10000)
.max_retry_count(3)
.ak(ak)
.sk(sk)
.region(region)
.endpoint(endpoint)
.build().unwrap();
// 1. Upload object using pre-signed URL
let bucket = "example-bucket";
let key = "test-upload-object.txt";
let mut upload_input = PreSignedURLInput::new_with_key(bucket, key);
upload_input.set_http_method(HttpMethodType::HttpMethodPut);
upload_input.set_expires(3600); // validity period 1 hour
let upload_output = client.pre_signed_url(&upload_input);
match upload_output {
Ok(output) => {
println!("Pre-signed URL for upload: {}", output.signed_url());
// Upload object using reqwest client
let http_client = HttpClient::new();
let upload_response = http_client.put(output.signed_url())
.body("Hello from pre-signed URL upload")
.send()
.await;
match upload_response {
Ok(resp) if resp.status().is_success() => {
println!("Upload successful with status: {}", resp.status());
}
Ok(resp) => {
println!("Upload failed with status: {}", resp.status());
}
Err(e) => {
println!("Upload request error: {}", e);
}
}
}
Err(err) => {
match err {
TosError::TosClientError { message, .. } => {
println!("Client error: {}", message);
}
TosError::TosServerError { request_id, ec, code, .. } => {
println!("Server error: request_id: {}, ec: {}, code: {}", request_id, ec, code);
}
}
}
}
}
Download objects using pre-signed URL
use async_trait::async_trait;
use futures_core::future::BoxFuture;
use std::env;
use std::future::Future;
use std::time::Duration;
use tokio::runtime::Handle;
use ve_tos_rust_sdk::common::init_tracing_log;
use ve_tos_rust_sdk::enumeration::{HttpMethodType};
use ve_tos_rust_sdk::asynchronous::tos;
use ve_tos_rust_sdk::asynchronous::tos::AsyncRuntime;
use ve_tos_rust_sdk::auth::{PreSignedURLInput, SignerAPI};
use reqwest::Client as HttpClient;
use ve_tos_rust_sdk::error::TosError;
#[derive(Debug, Default)]
pub struct TokioRuntime {}
#[async_trait]
impl AsyncRuntime for TokioRuntime {
type JoinError = tokio::task::JoinError;
async fn sleep(&self, duration: Duration) {
tokio::time::sleep(duration).await;
}
fn spawn<'a, F>(&self, future: F) -> BoxFuture<'a, Result<F::Output, Self::JoinError>>
where
F: Future + Send + 'static,
F::Output: Send + 'static,
{
Box::pin(Handle::current().spawn(future))
}
fn block_on<F: Future>(&self, future: F) -> F::Output {
Handle::current().block_on(future)
}
}
#[tokio::main]
async fn main() {
let _guard = init_tracing_log("info", "temp/logs", "app.log");
let ak = env::var("TOS_ACCESS_KEY").unwrap_or("".to_string());
let sk = env::var("TOS_SECRET_KEY").unwrap_or("".to_string());
let endpoint = "https://tos-cn-beijing.volces.com";
let region = "cn-beijing";
let client = tos::builder::<TokioRuntime>()
.connection_timeout(3000)
.request_timeout(10000)
.max_retry_count(3)
.ak(ak)
.sk(sk)
.region(region)
.endpoint(endpoint)
.build().unwrap();
// 2. Download objects using pre-signed URL
let bucket = "example-bucket";
let key = "test-download-object.txt";
let mut download_input = PreSignedURLInput::new_with_key(bucket, key);
download_input.set_http_method(HttpMethodType::HttpMethodGet);
download_input.set_expires(3600);
let download_output = client.pre_signed_url(&download_input);
match download_output {
Ok(output) => {
println!("Pre-signed URL for download: {}", output.signed_url());
// Download objects using reqwest client
let http_client = HttpClient::new();
let download_response = http_client.get(output.signed_url())
.send()
.await;
match download_response {
Ok(resp) if resp.status().is_success() => {
let content = resp.text().await.unwrap();
println!("Download successful, content: {}", content);
}
Ok(resp) => {
println!("Download failed with status: {}", resp.status());
}
Err(e) => {
println!("Download request error: {}", e);
}
}
}
Err(err) => {
match err {
TosError::TosClientError { message, .. } => {
println!("Client error: {}", message);
}
TosError::TosServerError { request_id, ec, code, .. } => {
println!("Server error: request_id: {}, ec: {}, code: {}", request_id, ec, code);
}
}
}
}
}
Delete objects using pre-signed URL
use async_trait::async_trait;
use futures_core::future::BoxFuture;
use std::env;
use std::future::Future;
use std::time::Duration;
use tokio::runtime::Handle;
use ve_tos_rust_sdk::common::init_tracing_log;
use ve_tos_rust_sdk::enumeration::{HttpMethodType};
use ve_tos_rust_sdk::asynchronous::tos;
use ve_tos_rust_sdk::asynchronous::tos::AsyncRuntime;
use ve_tos_rust_sdk::auth::{PreSignedURLInput, SignerAPI};
use reqwest::Client as HttpClient;
use ve_tos_rust_sdk::error::TosError;
#[derive(Debug, Default)]
pub struct TokioRuntime {}
#[async_trait]
impl AsyncRuntime for TokioRuntime {
type JoinError = tokio::task::JoinError;
async fn sleep(&self, duration: Duration) {
tokio::time::sleep(duration).await;
}
fn spawn<'a, F>(&self, future: F) -> BoxFuture<'a, Result<F::Output, Self::JoinError>>
where
F: Future + Send + 'static,
F::Output: Send + 'static,
{
Box::pin(Handle::current().spawn(future))
}
fn block_on<F: Future>(&self, future: F) -> F::Output {
Handle::current().block_on(future)
}
}
#[tokio::main]
async fn main() {
let _guard = init_tracing_log("info", "temp/logs", "app.log");
let ak = env::var("TOS_ACCESS_KEY").unwrap_or("".to_string());
let sk = env::var("TOS_SECRET_KEY").unwrap_or("".to_string());
let endpoint = "https://tos-cn-beijing.volces.com";
let region = "cn-beijing";
let client = tos::builder::<TokioRuntime>()
.connection_timeout(3000)
.request_timeout(10000)
.max_retry_count(3)
.ak(ak)
.sk(sk)
.region(region)
.endpoint(endpoint)
.build().unwrap();
// 3. Delete object using pre-signed URL
let bucket = "example-bucket";
let key = "test-delete-object.txt";
let mut delete_input = PreSignedURLInput::new_with_key(bucket, key);
delete_input.set_http_method(HttpMethodType::HttpMethodDelete);
delete_input.set_expires(3600);
let delete_output = client.pre_signed_url(&delete_input);
match delete_output {
Ok(output) => {
println!("Pre-signed URL for delete: {}", output.signed_url());
// Delete object using reqwest client
let http_client = HttpClient::new();
let delete_response = http_client.delete(output.signed_url())
.send()
.await;
match delete_response {
Ok(resp) if resp.status().is_success() => {
println!("Delete successful with status: {}", resp.status());
}
Ok(resp) => {
println!("Delete failed with status: {}", resp.status());
}
Err(e) => {
println!("Delete request error: {}", e);
}
}
}
Err(err) => {
match err {
TosError::TosClientError { message, .. } => {
println!("Client error: {}", message);
}
TosError::TosServerError { request_id, ec, code, .. } => {
println!("Server error: request_id: {}, ec: {}, code: {}", request_id, ec, code);
}
}
}
}
}
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Last updated: 2026.01.06 18:07:31
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