// Perform concat with retries. Currently retries only once. If the concat fails, checks whether it can be retried based on HttpStatuscode,
// If true then check whether the destiantion already exists and the source is deleted. If there is no intermediate state then returns true.
private bool PerformConcatWithRetries(out AdlsException excep)
{
var retryPolicy = new ExponentialRetryPolicy();
string destGuid = ChunkSegmentFolder + FileUploader.DestTempGuidForConcat;
var chunkList = new List <string>((int)_totalChunks);
for (int i = 0; i < _totalChunks; i++)
{
chunkList.Add(ChunkSegmentFolder + "/" + i);
}
int retries = 0;
do
{
excep = PerformConcatSingle(chunkList, destGuid);
if (excep == null)
{
return(true);
}
if (!retryPolicy.ShouldRetryBasedOnHttpOutput((int)excep.HttpStatus, excep.Ex))
{
return(false);
}
if (VerifyAdlExists(destGuid))
{
if (Client.CheckExists(ChunkSegmentFolder))
{
// If both destination and source folder exist then end-no way to recover
return(false);
}
return(true);
}
} while (retries++ < UploadRetryTime);
return(false);
}