public List <Google.Apis.Storage.v1.Data.Object> GetFoldersAndBlobs(string bucketName, string prefix, string delimiter)
{
List <string> folderNames = new List <string>()
{
};
List <Google.Apis.Storage.v1.Data.Object> blobs = new List <Google.Apis.Storage.v1.Data.Object>()
{
};
Google.Apis.Storage.v1.Data.Objects response = GetBlobsRaw(bucketName, prefix, delimiter);
if (response.Prefixes != null)
{
folderNames = response.Prefixes.ToList();
folderNames.ForEach(fn =>
{
Google.Apis.Storage.v1.Data.Object folderObj = GetBlob(bucketName, fn);
if (null != folderObj)
{
blobs.Add(folderObj);
}
});
}
if (response.Items != null)
{
blobs.AddRange(response.Items.ToList());
}
return(blobs);
}
public Google.Apis.Storage.v1.Data.Objects GetBlobsRaw(string bucketName, string prefix, string delimiter)
{
/*
* Gcs folder behavior, by wesly , 20200501
* folder name look likes aaa/ and the size is zero, and then if we put a ojbect in the folder, the folder name aaa/
* will be delete by system automatically, so you can get the object instnce of aaa/ any more.
* if list the bucket with delimiter, we can get all the direct child objects and folders names(as prefixes)
* and only these folders which contains no items can get the object instance.
* if list the bucket with delimiter and IncludeTrailingDelimiter, objects that end in exactly one
* instance of delimiter will have their metadata included in items in addition to prefixes.
* but pls pay attention to the duplicated item both in items and prefixes
*/
StorageService storageService = this.storage.Service;
ObjectsResource.ListRequest request = storageService.Objects.List(bucketName);
if (null != delimiter)
{
request.Delimiter = delimiter;
}
if (null != prefix)
{
request.Prefix = prefix;
}
//request.IncludeTrailingDelimiter = true;
Google.Apis.Storage.v1.Data.Objects response = request.Execute();
return(response);
}
public List <string> GetFolderAndBlobNames(string bucketName, string prefix)
{
List <string> rawNames = new List <string>()
{
};
List <string> folderAndBlobs = new List <string>()
{
};
List <Google.Apis.Storage.v1.Data.Object> blobs = null;
List <string> folders = null;
Google.Apis.Storage.v1.Data.Objects response = GetBlobsRaw(bucketName, prefix, "/");
if (response.Prefixes != null)
{
folders = response.Prefixes.ToList();
rawNames.AddRange(folders);
}
if (response.Items != null)
{
blobs = response.Items.ToList();
blobs.ForEach(b => { rawNames.Add(b.Name); });
}
rawNames.ForEach(b => {
if (!b.Equals(prefix))
{
string bName = (null == prefix) ? b : Utils.TrimPrefix(b, prefix);
folderAndBlobs.Add(bName);
}
});
return(folderAndBlobs);
}
protected override async Task <IReadOnlyCollection <Blob> > ListAtAsync(string path, ListOptions options, CancellationToken cancellationToken)
{
ObjectsResource.ListRequest request = _client.Service.Objects.List(_bucketName);
request.Prefix = StoragePath.IsRootPath(path) ? null : (path + "/");
request.Delimiter = "/";
var page = new List <Blob>();
do
{
Objects serviceObjects = await request.ExecuteAsync().ConfigureAwait(false);
if (serviceObjects.Items != null)
{
page.AddRange(GConvert.ToBlobs(serviceObjects.Items, options));
}
if (serviceObjects.Prefixes != null)
{
//the only info we have about prefixes is it's name
page.AddRange(serviceObjects.Prefixes.Select(p => new Blob(p, BlobItemKind.Folder)));
}
request.PageToken = serviceObjects.NextPageToken;
}while(request.PageToken != null);
return(page);
}
