/// <inheritdoc/>
public async Task <StorageObject> Create(string containerName, string objectName, IDictionary <string, string> metadata, Stream content, int numberOfSegments, string segmentsContainer)
{
containerName.AssertIsNotNullOrEmpty("containerName", "Cannot create a large storage object with a null or empty container name.");
objectName.AssertIsNotNullOrEmpty("objectName", "Cannot create a large storage object with a null or empty name.");
metadata.AssertIsNotNull("metadata", "Cannot create a large storage object with null metadata.");
content.AssertIsNotNull("content", "Cannot create a large storage object with null content.");
segmentsContainer.AssertIsNotNullOrEmpty("segmentsContainer", "Cannot create a large object with a null or empty segments container name.");
if (numberOfSegments <= 0)
{
throw new ArgumentException("Cannot create a large object with zero or less segments.", "numberOfSegments");
}
var segmentFolder = await this.GetSegmentsFolder(segmentsContainer, objectName);
var chunkSize = this.GetChunkSize(content.Length, numberOfSegments);
var lastSegmentAndId = this.GetLastSegmentIdAndName(segmentFolder);
var lastSegmentId = lastSegmentAndId.Key;
var lastSegmentFullName = string.Format("{0}/{1}", objectName, lastSegmentAndId.Value);
var offset = lastSegmentId * chunkSize;
if (lastSegmentId > 0)
{
//we should drop the last segment (as it's very possible it was corrupted)
await StorageClient.DeleteStorageObject(segmentsContainer, lastSegmentFullName);
}
//Seek to the correct location based on whatever segments have been uploaded, if any
content.Seek(offset, SeekOrigin.Begin);
while (content.Position < content.Length)
{
//If the remaining data in the stream is less then the chunk size, reset the chunk size to the remaining data size.
if ((content.Length - content.Position) < chunkSize)
{
chunkSize = (content.Length - content.Position);
}
await CreateSegment(content, chunkSize, objectName, lastSegmentId, metadata, segmentsContainer);
lastSegmentId++;
}
var segments = await StorageClient.GetStorageFolder(segmentsContainer, objectName);
return(await CreateLargeObjectManifest(containerName, objectName, metadata, segments.Objects, segmentsContainer));
}
