S3 set expires header

[Entegral]

Hi

We would like to be able to set the expires header for files uploaded using the cloudupload, but I could not find any info on this in the Documentation. I am already implementing a Custom Amazon S3 Provider if this is of any use.

Thanks in advance.

[Hristo Valyavicharski]

Hi,

To set expire header of a file you will have to use Custom Amazon Provider and override the UploadFile() method:

public override void UploadFile(string keyName, System.Collections.Specialized.NameValueCollection metaData, System.IO.Stream fileStream)
{

    PutObjectRequest request = new PutObjectRequest() { Key = keyName, BucketName = BucketName, InputStream = fileStream };

    foreach (string key in metaData)
    {
        request.Metadata.Add(key, metaData[key]);
    }

    request.Headers.Expires = new DateTime(2014, 12, 1);

    try
    {
        //_s3Client.PutObject(request);

        AmazonS3Client.PutObject(request);
    }
    catch (AmazonS3Exception e)
    {
        var message = string.Format("Exception thrown for upload operation for file with keyName: {0}", keyName);
        throw new CloudUploadProviderException(message, e, keyName, BucketName);
    }

}

I hope this helps.

Regards,
Hristo Valyavicharski
Telerik

 

 

[Entegral]

Hi Hristo.

Sorry for only coming back to you now. I have tried this method that you have supplied but there is not an expires header after upload.

Code:

Public Overrides Sub UploadFile(keyName As String, metaData As System.Collections.Specialized.NameValueCollection, fileStream As System.IO.Stream)

    Dim request As New PutObjectRequest() With { _
         .Key = keyName, _
         .BucketName = BucketName, _
         .InputStream = fileStream _
    }

    For Each key As String In metaData
        request.Metadata.Add(key, metaData(key))
    Next

    request.Headers.Expires = Date.Now.AddYears(30)

    Try
        '_s3Client.PutObject(request);

        AmazonS3Client.PutObject(request)
    Catch e As AmazonS3Exception
        Dim message = String.Format("Exception thrown for upload operation for file with keyName: {0}", keyName)
        Throw New CloudUploadProviderException(message, e, keyName, BucketName)
    End Try

End Sub

Regards

[Hristo Valyavicharski]

Override the UploadOnSingleRequest method and set the CacheControl property:

public override void UploadFileOnSigleRequest(string keyName, System.Collections.Specialized.NameValueCollection metaData, System.IO.Stream fileStream)
 {
     _container = StorageContainer;
     var blob = _container.GetBlockBlobReference(keyName);

     //blob.Properties.ContentDisposition = "attachment; filename=\"test.pdf\"";
     //blob.Properties.ContentType = "text/plain";

     blob.Properties.CacheControl = "";

     try
     {
         blob.UploadFromStream(fileStream);

         for (int i = 0; i < metaData.AllKeys.Length; i++)
         {
             var key = metaData.GetKey(i);
             blob.Metadata.Add(key, metaData[key]);
         }
         blob.SetMetadata();
     }
     catch (Exception e)
     {
         var message = string.Format("Exception thrown for upload operation for file with keyName: {0}", keyName);
         throw new CloudUploadProviderException(message, e, keyName, BlobContainer);
     }
 }

The difference between cache control and expires header is explained here:
http://stackoverflow.com/questions/5799906/what-s-the-difference-between-expires-and-cache-control-headers

Regards,
Hristo Valyavicharski
Telerik

 

 

[Sypher]

At least in v2015.2.826.45, the Telerik.Web.UI.AmazonS3Provider does not seem to include an UploadOnSingleRequest (or UploadOnSigleRequest) method. UploadFile and UploadChunk are available.