Torch Object Storage
Torch Object Storage
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- Documentation
Torch Object StorageSDK Reference.NETObject InterfaceUpload ObjectNormal Upload (.NET SDK)
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Normal Upload (.NET SDK)
Copy pageDownload PDFNormal Upload (.NET SDK)
Standard upload refers to uploading a single object via the PutObject method, which supports four forms: uploading a string (character stream), uploading bytes (byte stream), uploading a network stream, and uploading a local file.
Notes
- Before uploading objects, you must ensure that your account has the tos:PutObject permission. For detailed instructions, please refer to the Permission Configuration Guide.
- When uploading an object, the object name must comply with the naming conventions. For more information, please refer to Object Naming Conventions.
- TOS is a distributed object storage product designed for large-scale storage, with internal partitions that store object index data. To maximize the horizontal scalability of your upload and download throughput and reduce the likelihood of hot partitions, avoid using lexicographically incremental object naming. For more information, please see Performance Optimization.
- If an object with the same name already exists in the bucket, the new object will overwrite the existing one. When multi-versioning is enabled for a bucket, the original object is retained, and a new version number is generated to identify the newly uploaded object.
Sample Code
Upload String
The following code uploads string data to the example.txt file in the example_dir directory of TOS via the PutObject interface.
using System;
using System.IO;
using System.Text;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "https://tos-cn-beijing.volces.com";
var region = "cn-beijing";
var bucketName = "*** Provide your bucket name ***";
var objectContent = "Hello TOS";
var objectKey = "example_dir/example.txt";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
byte[] binaryData = Encoding.UTF8.GetBytes(objectContent);
using (MemoryStream requestContent = new MemoryStream(binaryData))
{
var putObjectInput = new PutObjectInput()
{
Bucket = bucketName,
Key = objectKey,
Content = requestContent
};
var putObjectOutput = client.PutObject(putObjectInput);
Console.WriteLine("Put object succeeded, ETag: {0} ", putObjectOutput.ETag);
}
}
catch (TosServerException ex)
{
Console.WriteLine("Put object failed, request id {0}", ex.RequestID);
Console.WriteLine("Put object failed, status code {0}", ex.StatusCode);
Console.WriteLine("Put object failed, response error code {0}", ex.Code);
Console.WriteLine("Put object failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("Put object failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Put object failed, {0}", ex.Message);
}
}
}
}
Upload Network Stream
The following code uses the PutObject API to upload network stream data to the example.txt file under the example_dir directory in TOS.
using System;
using System.Net;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "https://tos-cn-beijing.volces.com";
var region = "cn-beijing";
var bucketName = "*** Provide your bucket name ***";
var objectKey = "example_dir/example.txt";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
var request = (HttpWebRequest)WebRequest.Create("https://www.volcengine.com/");
request.Method = WebRequestMethods.Http.Get;
var response = (HttpWebResponse)request.GetResponse();
var putObjectInput = new PutObjectInput()
{
Bucket = bucketName,
Key = objectKey,
Content = response.GetResponseStream()
};
var putObjectOutput = client.PutObject(putObjectInput);
Console.WriteLine("Put object succeeded, request id: {0} ", putObjectOutput.RequestID);
response.Close();
}
catch (TosServerException ex)
{
Console.WriteLine("Put object failed, request id {0}", ex.RequestID);
Console.WriteLine("Put object failed, status code {0}", ex.StatusCode);
Console.WriteLine("Put object failed, response error code {0}", ex.Code);
Console.WriteLine("Put object failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("Put object failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Put object failed, {0}", ex.Message);
}
}
}
}
Upload Local File Stream
The following code uploads the specified file stream to the example_dir directory in TOS as the example.txt file using the PutObject API.
using System;
using System.IO;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "https://tos-cn-beijing.volces.com";
var region = "cn-beijing";
var bucketName = "*** Provide your bucket name ***";
var objectKey = "example_dir/example.txt";
var localFileName = "/usr/local/test.txt";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
using (var fileStream = File.OpenRead(localFileName))
{
var putObjectInput = new PutObjectInput()
{
Bucket = bucketName,
Key = objectKey,
Content = fileStream
};
var putObjectOutput = client.PutObject(putObjectInput);
Console.WriteLine("Put object succeeded, request id: {0} ", putObjectOutput.RequestID);
}
}
catch (TosServerException ex)
{
Console.WriteLine("Put object failed, request id {0}", ex.RequestID);
Console.WriteLine("Put object failed, status code {0}", ex.StatusCode);
Console.WriteLine("Put object failed, response error code {0}", ex.Code);
Console.WriteLine("Put object failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("Put object failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Put object failed, {0}", ex.Message);
}
}
}
}
Upload Local File
The following code uses the PutObjectFromFile interface to specify a file path and upload the file to the specified example_dir directory in TOS as example.txt.
using System;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "https://tos-cn-beijing.volces.com";
var region = "cn-beijing";
var bucketName = "*** Provide your bucket name ***";
var objectKey = "example_dir/example.txt";
var localFileName = "/usr/local/test.txt";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
var putObjectFromFileInput = new PutObjectFromFileInput()
{
Bucket = bucketName,
Key = objectKey,
FilePath = localFileName
};
var putObjectFromFileOutput = client.PutObjectFromFile(putObjectFromFileInput);
Console.WriteLine("Put object succeeded, request id: {0} ", putObjectFromFileOutput.RequestID);
}
catch (TosServerException ex)
{
Console.WriteLine("Put object failed, request id {0}", ex.RequestID);
Console.WriteLine("Put object failed, status code {0}", ex.StatusCode);
Console.WriteLine("Put object failed, response error code {0}", ex.Code);
Console.WriteLine("Put object failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("Put object failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Put object failed, {0}", ex.Message);
}
}
}
}
Setting Object Metadata Information During Upload
The following code uploads string data to the example_dir directory's example.txt file using the PutObject API. During upload, the object storage type is set to Infrequent Access Storage, the access permission is configured as private, and file metadata is specified.
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using TOS;
using TOS.Error;
using TOS.Model;
namespace ConsoleApp
{
internal class Program
{
private static void Main(string[] args)
{
var ak = Environment.GetEnvironmentVariable("TOS_ACCESS_KEY");
var sk = Environment.GetEnvironmentVariable("TOS_SECRET_KEY");
var endpoint = "https://tos-cn-beijing.volces.com";
var region = "cn-beijing";
var bucketName = "*** Provide your bucket name ***";
var objectContent = "Hello TOS";
var objectKey = "example_dir/example.txt";
var client = TosClientBuilder.Builder().SetAk(ak).SetSk(sk).SetEndpoint(endpoint).SetRegion(region).Build();
try
{
var binaryData = Encoding.UTF8.GetBytes(objectContent);
using (var requestContent = new MemoryStream(binaryData))
{
var putObjectInput = new PutObjectInput
{
Bucket = bucketName,
Key = objectKey,
ACL = ACLType.ACLPrivate,
StorageClass = StorageClassType.StorageClassIa,
Meta = new Dictionary<string, string> { { "key", "value" } },
Content = requestContent
};
var putObjectOutput = client.PutObject(putObjectInput);
Console.WriteLine("Put object succeeded, ETag: {0} ", putObjectOutput.ETag);
}
}
catch (TosServerException ex)
{
Console.WriteLine("Put object failed, request id {0}", ex.RequestID);
Console.WriteLine("Put object failed, status code {0}", ex.StatusCode);
Console.WriteLine("Put object failed, response error code {0}", ex.Code);
Console.WriteLine("Put object failed, response error message {0}", ex.Message);
}
catch (TosClientException ex)
{
Console.WriteLine("Put object failed, error message {0}", ex.Message);
}
catch (Exception ex)
{
Console.WriteLine("Put object failed, {0}", ex.Message);
}
}
}
}
Last updated: 2025.09.23 11:28:05
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