/// <summary>
/// List containers by container name prefix
/// </summary>
/// <param name="prefix">Container name prefix</param>
/// <returns>An enumerable collection of cloudblobcontainer</returns>
internal IEnumerable <Tuple <AzureStorageContainer, BlobContinuationToken> > ListContainersByPrefix(string prefix, Func <string, bool> containerFilter = null)
{
BlobServiceClient blobServiceClient = Util.GetTrack2BlobServiceClient(this.Channel.StorageContext, ClientOptions);
BlobContainerTraits traits = BlobContainerTraits.Metadata;
BlobContainerStates states = BlobContainerStates.None;
if (this.IncludeDeleted.IsPresent)
{
states = BlobContainerStates.Deleted;
}
if (!string.IsNullOrEmpty(prefix) && !NameUtil.IsValidContainerPrefix(prefix))
{
throw new ArgumentException(String.Format(Resources.InvalidContainerName, prefix));
}
int listCount = InternalMaxCount;
int MaxListCount = 5000;
int requestCount = MaxListCount;
int realListCount = 0;
string continuationToken = this.ContinuationToken is null ? null : this.ContinuationToken.NextMarker;
do
{
requestCount = Math.Min(listCount, MaxListCount);
realListCount = 0;
IEnumerator <Page <BlobContainerItem> > enumerator = blobServiceClient.GetBlobContainers(traits, states, prefix, this.CmdletCancellationToken)
.AsPages(continuationToken, requestCount)
.GetEnumerator();
Page <BlobContainerItem> page;
enumerator.MoveNext();
page = enumerator.Current;
foreach (BlobContainerItem item in page.Values)
{
if (containerFilter == null || containerFilter(item.Name))
{
yield return(new Tuple <AzureStorageContainer, BlobContinuationToken>(
new AzureStorageContainer(item, Channel.StorageContext, blobServiceClient),
string.IsNullOrEmpty(page.ContinuationToken) ? null : new BlobContinuationToken()
{
NextMarker = page.ContinuationToken
}));
realListCount++;
}
realListCount++;
}
continuationToken = page.ContinuationToken;
if (InternalMaxCount != int.MaxValue)
{
listCount -= realListCount;
}
}while (listCount > 0 && !string.IsNullOrEmpty(continuationToken));
}
/// <summary>
/// List containers by container name prefix
/// </summary>
/// <param name="prefix">Container name prefix</param>
/// <returns>An enumerable collection of cloudblobcontainer</returns>
internal IEnumerable <CloudBlobContainer> ListContainersByPrefix(string prefix)
{
ContainerListingDetails details = ContainerListingDetails.Metadata;
BlobRequestOptions requestOptions = null;
if (!NameUtil.IsValidContainerPrefix(prefix))
{
throw new ArgumentException(String.Format(Resources.InvalidContainerName, prefix));
}
IEnumerable <CloudBlobContainer> containers = Channel.ListContainers(prefix, details, requestOptions, OperationContext);
return(containers);
}
/// <summary>
/// List containers by container name prefix
/// </summary>
/// <param name="prefix">Container name prefix</param>
/// <returns>An enumerable collection of cloudblobcontainer</returns>
internal IEnumerable <Tuple <CloudBlobContainer, BlobContinuationToken> > ListContainersByPrefix(string prefix, Func <CloudBlobContainer, bool> containerFilter = null)
{
ContainerListingDetails details = ContainerListingDetails.Metadata;
BlobRequestOptions requestOptions = RequestOptions;
if (!string.IsNullOrEmpty(prefix) && !NameUtil.IsValidContainerPrefix(prefix))
{
throw new ArgumentException(String.Format(Resources.InvalidContainerName, prefix));
}
int listCount = InternalMaxCount;
int MaxListCount = 5000;
int requestCount = MaxListCount;
int realListCount = 0;
BlobContinuationToken continuationToken = ContinuationToken;
do
{
requestCount = Math.Min(listCount, MaxListCount);
realListCount = 0;
ContainerResultSegment containerResult = Channel.ListContainersSegmented(prefix, details, requestCount, continuationToken, requestOptions, OperationContext);
foreach (CloudBlobContainer container in containerResult.Results)
{
if (containerFilter == null || containerFilter(container))
{
yield return(new Tuple <CloudBlobContainer, BlobContinuationToken>(container, containerResult.ContinuationToken));
realListCount++;
}
}
if (InternalMaxCount != int.MaxValue)
{
listCount -= realListCount;
}
continuationToken = containerResult.ContinuationToken;
}while (listCount > 0 && continuationToken != null);
}