Question

Uploading File to DO Spaces using AWS SDK .NET/.NET Core

Posted on October 31, 2019
DigitalOcean Spaces
Asked by Eyad Al-Akkad

I was searching for a code snippet on how to upload a file to DO Spaces but cloud not found anything. After many attempts, I found the solution.

After downloading AWS SDK from nuget manager,

Upload Class:

public static  class UploadFileMPUHighLevelAPITest
    {
        public static  string bucketName = "your spaces name";
        //public static string filePath = "d:\\test upload.txt";
        public static string endpoingURL = "https://fra1.digitaloceanspaces.com";
        public static IAmazonS3 s3Client;

        public static  bool UploadFile(string filePath, string fileName, string folderName)
        {
            var s3ClientConfig = new AmazonS3Config
            {
                ServiceURL = endpoingURL
            };
            s3Client = new AmazonS3Client(s3ClientConfig);
            try
            {
                var fileTransferUtility = new TransferUtility(s3Client);
                var fileTransferUtilityRequest = new TransferUtilityUploadRequest
                {
                    BucketName = bucketName+ @"/" + folderName,
                    FilePath = filePath,
                    StorageClass = S3StorageClass.StandardInfrequentAccess,
                    PartSize = 6291456, // 6 MB
                    Key = fileName,
                    CannedACL = S3CannedACL.PublicRead
                };
                fileTransferUtility.Upload(fileTransferUtilityRequest);
                return true;
            }
            catch (AmazonS3Exception e)
            {
                Console.WriteLine("Error encountered ***. Message:'{0}' when writing an object", e.Message);
            }
            catch (Exception e)
            {
                Console.WriteLine("Unknown encountered on server. Message:'{0}' when writing an object", e.Message);
                if (e.Message.Contains("disposed"))
                    return true;
            }
            return false;
         }
    }

appsettings.json

  "AWS": {
    "AccessKey": "your access key",
    "SecretKey": "your secret key"
  }

Startup.cs

        public void ConfigureServices(IServiceCollection services)
        {
            //enable cors
            services.AddCors(c =>
            {
                c.AddPolicy("AllowOrigin", options => options.AllowAnyOrigin());
            });

            services.AddDbContext<onusshoppingContext>(options => options.UseMySql(Configuration.GetConnectionString("myContext")));
            services.Configure<HostingDetails>(Configuration.GetSection("Hosting"));
            services.Configure<AppSetting>(Configuration.GetSection("AppSetting"));

            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
            Environment.SetEnvironmentVariable("AWS_ACCESS_KEY_ID", Configuration["AWS:AccessKey"]);
            Environment.SetEnvironmentVariable("AWS_SECRET_ACCESS_KEY", Configuration["AWS:SecretKey"]);
           
        }

I hope it is useful!

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Eyad Al-Akkad • October 31, 2019

Accepted Answer

The answer is above.

cauterfix • July 21, 2022

[Route("api/[controller]")]
[ApiController]
public class ImageController : ControllerBase
{
    private const int TIMEOUT = 2500;

    // Digital Ocean settings
    private static readonly string S3LoginRoot = "https://nyc3.digitaloceanspaces.com/";
    private static readonly string S3BucketName = "";
    private static readonly string AccessKey = "";
    private static readonly string AccessKeySecret = "";
    private static readonly string S3FolderName = "";

    [HttpPost]
    public IActionResult Post([FromForm] IFormFile file)
    {
        bool Sucesso = false;

        try
        {
            AmazonS3Client? s3Client = new(new BasicAWSCredentials(AccessKey, AccessKeySecret), new AmazonS3Config
            {
                ServiceURL = S3LoginRoot,
                Timeout = TimeSpan.FromSeconds(TIMEOUT),
                MaxErrorRetry = 8,
            });

            TransferUtility fileTransferUtility = new(s3Client);

            TransferUtilityUploadRequest? fileTransferUtilityRequest = new()
            {
                BucketName = S3BucketName + @"/" + S3FolderName,
                Key = file.FileName,
                InputStream = file.OpenReadStream(),
                ContentType = file.ContentType,
                StorageClass = S3StorageClass.StandardInfrequentAccess,
                PartSize = 6291456,
                CannedACL = S3CannedACL.PublicRead,
            };

            fileTransferUtility.Upload(fileTransferUtilityRequest);

            Sucesso = true;
        }
        catch (Exception Ex)
        {
            Console.WriteLine(Ex.Message);
        }

        return Ok(new { Sucesso });
    }

}

Updating