/// <summary>
/// List all objects along with versions non-recursively in a bucket with a given prefix, optionally emulating a directory
/// </summary>
/// <param name="args">ListObjectsArgs Arguments Object with information like Bucket name, prefix, recursive listing, versioning</param>
/// <param name="cancellationToken">Optional cancellation token to cancel the operation</param>
/// <returns>An observable of items that client can subscribe to</returns>
public IObservable <VersionItem> ListObjectVersionsAsync(ListObjectsArgs args, CancellationToken cancellationToken = default(CancellationToken))
{
return(Observable.Create <VersionItem>(
async(obs, ct) =>
{
bool isRunning = true;
var delimiter = (args.Recursive) ? string.Empty : "/";
string marker = string.Empty;
using (var cts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, ct))
{
while (isRunning)
{
GetObjectListArgs goArgs = new GetObjectListArgs()
.WithBucket(args.BucketName)
.WithPrefix(args.Prefix)
.WithDelimiter(delimiter)
.WithVersions(args.Versions)
.WithMarker(marker);
Tuple <ListVersionsResult, List <VersionItem> > objectList = await this.GetObjectVersionsListAsync(goArgs, cts.Token).ConfigureAwait(false);
ListObjectVersionResponse listObjectsItemResponse = new ListObjectVersionResponse(args, objectList, obs);
marker = listObjectsItemResponse.NextMarker;
isRunning = objectList.Item1.IsTruncated;
cts.Token.ThrowIfCancellationRequested();
}
}
}));
}
/// <summary>
/// List all objects non-recursively in a bucket with a given prefix, optionally emulating a directory
/// </summary>
/// <param name="bucketName">Bucket to list objects from</param>
/// <param name="prefix">Filters all objects beginning with a given prefix</param>
/// <param name="recursive">Set to true to recursively list all objects</param>
/// <param name="cancellationToken">Optional cancellation token to cancel the operation</param>
/// <returns>An observable of items that client can subscribe to</returns>
public IObservable <Item> ListObjectsAsync(string bucketName, string prefix = null, bool recursive = false, CancellationToken cancellationToken = default(CancellationToken))
{
ListObjectsArgs args = new ListObjectsArgs()
.WithBucket(bucketName)
.WithPrefix(prefix)
.WithRecursive(recursive);
return(this.ListObjectsAsync(args, cancellationToken));
}
internal ListObjectVersionResponse(ListObjectsArgs args, Tuple <ListVersionsResult, List <Item> > objectList, IObserver <Item> obs)
{
this.ItemObservable = obs;
string marker = string.Empty;
foreach (Item item in objectList.Item2)
{
this.BucketObjectsLastItem = item;
if (objectList.Item1.EncodingType == "url")
{
item.Key = HttpUtility.UrlDecode(item.Key);
}
this.ItemObservable.OnNext(item);
}
if (objectList.Item1.NextMarker != null)
{
if (objectList.Item1.EncodingType == "url")
{
NextMarker = HttpUtility.UrlDecode(objectList.Item1.NextMarker);
NextKeyMarker = HttpUtility.UrlDecode(objectList.Item1.NextKeyMarker);
NextVerMarker = HttpUtility.UrlDecode(objectList.Item1.NextVersionIdMarker);
}
else
{
NextMarker = objectList.Item1.NextMarker;
NextKeyMarker = objectList.Item1.NextKeyMarker;
NextVerMarker = objectList.Item1.NextVersionIdMarker;
}
}
else if (this.BucketObjectsLastItem != null)
{
if (objectList.Item1.EncodingType == "url")
{
NextMarker = HttpUtility.UrlDecode(this.BucketObjectsLastItem.Key);
NextKeyMarker = HttpUtility.UrlDecode(this.BucketObjectsLastItem.Key);
NextVerMarker = HttpUtility.UrlDecode(this.BucketObjectsLastItem.VersionId);
}
else
{
NextMarker = this.BucketObjectsLastItem.Key;
NextKeyMarker = this.BucketObjectsLastItem.Key;
NextVerMarker = this.BucketObjectsLastItem.VersionId;
}
}
}
