public async Task <string> GetReadOnlyBlobSasToken(string containerName, string folderName, string fileName)
{
// container
var container = await StorageUtils.GetBlobContainer(_cloudStorageAccount, containerName);
var blobName = StorageUtils.GetFileName(container, folderName, fileName);
return(StorageUtils.GetReadOnlyBlobSasUri(container, blobName));
}
private async Task <CloudBlockBlob> GetWritableBlob(string containerName, string fileName, string folderName = null)
{
// get/create container
var container = await StorageUtils.GetBlobContainer(_cloudStorageAccount, containerName);
// generate the nested file name
string nestedFileName = folderName != null ? $"{folderName}{container.ServiceClient.DefaultDelimiter}{fileName}" : $"{fileName}";
// get sas token
var sasUri = StorageUtils.GetBlobSasUri(container, nestedFileName, null);
// Return a reference to the blob using the SAS URI. This allows us to upload file contents without having to submit SAS as a query.
return(new CloudBlockBlob(new Uri(sasUri)));
}
private async Task <long> GetBlobSize(CloudBlockBlob blob)
{
return(await StorageUtils.GetBlobSize(blob));
}
public CloudStorageService(IConfiguration configuration)
{
_cloudStorageAccount = StorageUtils.GetCloudStorageAccount(configuration["Azure:Storage:ConnectionString"]);
}
private async Task <bool> UploadBlobToContainer(CloudBlockBlob blob, byte[] fileContent)
{
return(await StorageUtils.UploadBlob(blob, fileContent));
}