Torch Object Storage
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- Documentation
Torch Object StorageSDK ReferenceRustObject interfaceBasic operationPutObject（Rust SDK）
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PutObject（Rust SDK）
Copy pageDownload PDFPutObject（Rust SDK）
The put_object interface uploads objects to a specified bucket, supporting encryption, ACL, storage class, tags, rate limiting, and other configurations. This article explains how to upload using the put_object interface in the Rust SDK.
Notes
- You need to fill in the region and access domain in the sample code according to your actual situation. For details, refer to Regions and Access Domains.
- To prevent key leakage, the sample code in this article reads the Access Key ID and Secret Access Key from environment variables. Therefore, before using the SDK, configure long-term access credentials. For details, refer to Configure Long-Term Access Credentials.
- When a bucket has versioning enabled, the forbid_overwrite setting is invalid, and objects with the same name are always allowed to be overwritten.
Permissions required
The Volcengine main account has all permissions by default, but IAM users have no permissions by default. If you need to use a sub-account to perform the put_object operation, the Volcengine main account must grant the following permissions to the sub-account through IAM policy and bucket policy:
tos:PutObject
Code example
Upload string
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::asynchronous::object::ObjectAPI;
use ve_tos_rust_sdk::common::init_tracing_log;
use ve_tos_rust_sdk::asynchronous::tos::{new_stream, BufferStream};
use ve_tos_rust_sdk::asynchronous::tos::AsyncRuntime;
use ve_tos_rust_sdk::object::{PutObjectInput};
use ve_tos_rust_sdk::asynchronous::tos;
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 bucket = "example-bucket-2";
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();
// Upload String
let data = "Hello, TOS! This is a test string.";
let stream = new_stream(data);
let key = "uploaded_string.txt";
let mut input = PutObjectInput::<BufferStream>::new_with_content(bucket, key, stream);
let output = client.put_object(&input).await;
match output {
Ok(res) => {
println!("Upload string success");
println!("request_id: {}", res.request_id());
println!("etag: {}", res.etag());
println!("hash_crc64ecma: {}", res.hash_crc64ecma());
}
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),
_ => println!("Unknown error: {:?}", err),
}
}
}
}
Set object metadata when uploading
use async_trait::async_trait;
use futures_core::future::BoxFuture;
use std::env;
use std::future::Future;
use std::time::Duration;
use std::collections::HashMap;
use tokio::runtime::Handle;
use ve_tos_rust_sdk::common::init_tracing_log;
use ve_tos_rust_sdk::asynchronous::object::ObjectAPI;
use ve_tos_rust_sdk::asynchronous::tos;
use ve_tos_rust_sdk::asynchronous::tos::AsyncRuntime;
use ve_tos_rust_sdk::object::PutObjectInput;
use ve_tos_rust_sdk::object::BufferStream;
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 bucket = "example-bucket";
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();
// Upload with Metadata
let data = "Data with custom metadata";
let stream = BufferStream::new(data.as_bytes().into());
let key = "file_with_metadata.txt";
let mut input = PutObjectInput::<BufferStream>::new_with_content(bucket, key, stream);
// Set custom metadata
let mut meta = HashMap::new();
meta.insert("author".to_string(), "John Doe".to_string());
meta.insert("project".to_string(), "TOS SDK Example".to_string());
meta.insert("version".to_string(), "1.0".to_string());
input.set_meta(meta);
// Set additional metadata fields
input.set_content_type("text/plain");
input.set_cache_control("max-age=3600");
input.set_content_disposition("attachment; filename=\"metadata_file.txt\"");
let output = client.put_object(&input).await;
match output {
Ok(res) => {
println!("Upload with metadata success");
println!("request_id: {}", res.request_id());
println!("etag: {}", res.etag());
println!("hash_crc64ecma: {}", res.hash_crc64ecma());
}
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),
_ => println!("Unknown error: {{:?}}", err),
}
}
}
}
Upload local file stream
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 tokio::fs::File;
use tokio_util::io::ReaderStream;
use ve_tos_rust_sdk::common::init_tracing_log;
use ve_tos_rust_sdk::asynchronous::object::ObjectAPI;
use ve_tos_rust_sdk::asynchronous::tos::AsyncRuntime;
use ve_tos_rust_sdk::object::PutObjectInput;
use ve_tos_rust_sdk::asynchronous::tos;
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 bucket = "example-bucket-2";
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();
// Upload Local File
let file_path = "test_file.txt"; // Replace with actual path
let file = match tokio::fs::File::open(file_path).await {
Ok(f) => f,
Err(e) => {
println!("Failed to open file: {}", e);
return;
}
};
let stream = ReaderStream::new(file);
let key = "uploaded_file.txt";
let input = PutObjectInput::<ReaderStream<File>>::new_with_content(bucket, key, stream);
let output = client.put_object(&input).await;
match output {
Ok(res) => {
println!("Upload local file success");
println!("request_id: {}", res.request_id());
println!("etag: {}", res.etag());
println!("hash_crc64ecma: {}", res.hash_crc64ecma());
}
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),
_ => println!("Unknown error: {:?}", err),
}
}
}
}
Related documentation
Last updated: 2026.01.06 18:07:29
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