public static async Task <T> AzureStorageDeleteAsync <T>(this Rest restme, string storageRelativePath)
{
MustBeStorageMode(restme);
var container = await restme.GetAzureBlobContainerAsync(storageRelativePath);
var blobItemPath = restme.IdentifyBlobItemPath(storageRelativePath);
if (blobItemPath.IsNullOrEmpty())
{
throw new PranamWebException("Invalid blob item name.");
}
var blockBlob = container.GetBlockBlobReference(blobItemPath);
try
{
await blockBlob.DeleteIfExistsAsync();
if (typeof(T) == typeof(bool))
{
return((T)Convert.ChangeType(true, typeof(T)));
}
}
catch (Exception ex)
{
restme.LogDebug("Unable to delete requested data:\n" + ex.Message, ex);
}
return(default(T));
}
public static async Task <T> AzureStoragePostAsync <T>(this Rest restme, string storageRelativePath, object dataObject)
{
MustBeStorageMode(restme);
if (dataObject == null)
{
throw new PranamWebException(
"Uploading null blob is not supported, use delete method if you intended to delete.");
}
var container = await restme.GetAzureBlobContainerAsync(storageRelativePath);
var blobItemPath = restme.IdentifyBlobItemPath(storageRelativePath);
if (blobItemPath.IsNullOrEmpty())
{
throw new PranamWebException("Invalid blob item name.");
}
var blockBlob = container.GetBlockBlobReference(blobItemPath);
Stream stream = null;
using (stream = new MemoryStream())
{
try
{
var extension = FileUtils.GetFileExtensionName(storageRelativePath);
if (extension.IsNotNullOrEmpty())
{
blockBlob.Properties.ContentType = FileUtils.GetMimeType(extension);
}
if (typeof(Stream).IsAssignableFrom(typeof(T)))
{
stream = dataObject as Stream;
stream.Position = 0;
await blockBlob.UploadFromStreamAsync(stream);
}
else
{
var jsonValue =
dataObject.JsonSerialize(restme.Configuration.UseRestConvertForCollectionSerialization,
restme.Configuration.SerializerSettings);
await
blockBlob.UploadTextAsync(jsonValue, restme.Configuration.DefaultEncoding,
restme.DefaultAzureBlobAccessCondition, restme.DefaultAzureBlobRequestOptions,
restme.DefaultAzureBlobOperationContext);
}
return((T)dataObject);
}
catch (Exception ex)
{
restme.LogDebug("Unable to upload requested data:\n" + ex.Message, ex);
return(default(T));
}
}
}
public static async Task <T> AzureStorageGetAsync <T>(this Rest restme, string storageRelativePath)
{
MustBeStorageMode(restme);
var container = await restme.GetAzureBlobContainerAsync(storageRelativePath);
var blobItemPath = restme.IdentifyBlobItemPath(storageRelativePath);
if (blobItemPath.IsNullOrEmpty())
{
throw new PranamWebException("Invalid blob item name.");
}
var blockBlob = container.GetBlockBlobReference(blobItemPath);
using (var stream = new MemoryStream())
{
try
{
if (!await blockBlob.ExistsAsync())
{
return(default(T));
}
if (typeof(Stream).IsAssignableFrom(typeof(T)))
{
await blockBlob.DownloadToStreamAsync(stream);
var bytes = FileUtils.ReadStreamToEnd(stream);
T result;
if (typeof(T).GetTypeInfo().IsAbstract)
{
result = (T)Activator.CreateInstance(typeof(MemoryStream), bytes);
}
else
{
result = (T)Activator.CreateInstance(typeof(T), bytes);
}
return(result);
}
var jsonStringValue = await blockBlob.DownloadTextAsync();
if (!jsonStringValue.IsNotNullOrEmpty())
{
return(default(T));
}
if (typeof(T) == typeof(string))
{
return((T)Convert.ChangeType(jsonStringValue, typeof(T)));
}
return(jsonStringValue.JsonDeserialize <T>());
}
catch (Exception ex)
{
restme.LogDebug(
$"Unable to fetch requested blob: {storageRelativePath}\n {ex.Message} \n {ex.StackTrace}", ex);
return(default(T));
}
}
}
