/// <summary>
/// Wrapped function of downloading partial file with timeout
/// </summary>
/// <param name="filename">The file name to download to.</param>
/// <param name="offset">Start offset of the download.</param>
/// <param name="length">The lenth of content to download.</param>
/// <param name="timeout">The timeout for performing the download operation.</param>
public void DownloadPartToFile(string filename, int offset, int length, TimeSpan timeout)
{
UpDownloadParams downloadParam = new UpDownloadParams(this.blob, filename, offset, length) as UpDownloadParams;
int caluatedTimeout = GetTimeOutInSeconds(downloadParam.Length);
this.reqOption.MaximumExecutionTime = (timeout == TimeSpan.MaxValue || timeout.Seconds < caluatedTimeout)
? new TimeSpan(0, 0, caluatedTimeout)
: timeout;
using (FileStream fs = FabricFile.Open(downloadParam.Filename, FileMode.OpenOrCreate, FileAccess.Write, FileShare.None))
{
// Create the Blob and upload the file
#if !DotNetCoreClr
using (Stream blobStream = downloadParam.Blob.OpenRead(null, this.reqOption))
#else
using (Stream blobStream = downloadParam.Blob.OpenReadAsync(null, this.reqOption, null).Result)
#endif
{
int len = 0;
byte[] buffer = new byte[PartialDownloadBufferLen];
while (len < downloadParam.Length)
{
blobStream.Position = downloadParam.Offset + len;
int count = blobStream.Read(buffer, 0, Math.Min(PartialDownloadBufferLen, downloadParam.Length - len));
fs.Write(buffer, 0, count);
len += count;
}
}
}
}
/// <summary>
/// Wrapped function of downloading file with timeout
/// </summary>
/// <param name="filename">The filename to which to download.</param>
/// <param name="length">The length of the content to be downloaded</param>
/// <param name="timeout">The timeout for performing the download operation.</param>
/// <param name="operContext">Represents the context for a request operation.</param>
public void DownloadToFile(string filename, int length, TimeSpan timeout, OperationContext operContext)
{
UpDownloadParams downloadParam = new UpDownloadParams(this.blob, filename, 0, length);
int caluatedTimeout = GetTimeOutInSeconds(downloadParam.Length);
this.reqOption.MaximumExecutionTime = (timeout == TimeSpan.MaxValue || timeout.Seconds < caluatedTimeout)
? new TimeSpan(0, 0, caluatedTimeout)
: timeout;
#if !DotNetCoreClr
downloadParam.Blob.DownloadToFile(downloadParam.Filename, FileMode.CreateNew, null, this.reqOption, operContext);
#else
downloadParam.Blob.DownloadToFileAsync(downloadParam.Filename, FileMode.CreateNew, null, this.reqOption, operContext).Wait();
#endif
}
/// <summary>
/// Wrapped function of uploading file with timeout
/// </summary>
/// <param name="filename">The file name to upload.</param>
/// <param name="length">The part of the file to upload.</param>
/// <param name="timeout">The timeout for performing the uploading operation.</param>
public void UploadFromFile(string filename, int length, TimeSpan timeout)
{
UpDownloadParams uploadParam = new UpDownloadParams(this.blob, filename, 0, length);
int caluatedTimeout = GetTimeOutInSeconds(uploadParam.Length);
this.reqOption.MaximumExecutionTime = (timeout == TimeSpan.MaxValue || timeout.Seconds < caluatedTimeout)
? new TimeSpan(0, 0, caluatedTimeout)
: timeout;
using (var stream = FabricFile.Open(uploadParam.Filename, FileMode.Open, FileAccess.Read, FileShare.Read))
{
#if !DotNetCoreClr
uploadParam.Blob.UploadFromStream(stream, null, this.reqOption);
#else
uploadParam.Blob.UploadFromStreamAsync(stream, null, this.reqOption, null).Wait();
#endif
}
}
