public override async Task <Message> BeforeMessageSend(Message message)
{
if (AttachmentBlobAssociated(message.UserProperties))
{
return(message);
}
if (!configuration.MessageMaxSizeReachedCriteria(message))
{
return(message);
}
var containerUri = new Uri($"{configuration.BlobEndpoint}{configuration.ContainerName}");
var container = new CloudBlobContainer(containerUri, configuration.StorageCredentials);
try
{
// Will only work for Shared Key or Account SAS. For Container SAS will throw an exception.
if (!await container.ExistsAsync().ConfigureAwait(false))
{
await container.CreateIfNotExistsAsync().ConfigureAwait(false);
}
}
catch (StorageException)
{
// swallow in case a container SAS is used
}
var blobUri = new Uri($"{containerUri}/{Guid.NewGuid().ToString()}");
var blob = new CloudBlockBlob(blobUri, configuration.StorageCredentials);
SetValidMessageId(blob, message.MessageId);
SetValidUntil(blob, message.TimeToLive);
await blob.UploadFromByteArrayAsync(message.Body, 0, message.Body.Length).ConfigureAwait(false);
message.Body = null;
message.UserProperties[configuration.MessagePropertyToIdentifyAttachmentBlob] = blob.Name;
if (!configuration.BlobSasTokenValidationTime.HasValue)
{
return(message);
}
// TODO: only possible if connection string is used
// configuration.StorageCredentials.IsSharedKey
var sasUri = TokenGenerator.GetBlobSasUri(blob, configuration.BlobSasTokenValidationTime.Value);
message.UserProperties[configuration.MessagePropertyForBlobSasUri] = sasUri;
return(message);
}
public override async Task <Message> BeforeMessageSend(Message message)
{
ThrowIfDisposed();
if (AttachmentBlobAssociated(message.UserProperties))
{
return(message);
}
if (!configuration.MessageMaxSizeReachedCriteria(message))
{
return(message);
}
await InitializeClient().ConfigureAwait(false);
var container = client.GetContainerReference(configuration.ContainerName);
if (!await container.ExistsAsync().ConfigureAwait(false))
{
await container.CreateIfNotExistsAsync().ConfigureAwait(false);
}
var blob = container.GetBlockBlobReference(Guid.NewGuid().ToString());
SetValidMessageId(blob, message.MessageId);
SetValidUntil(blob, message.TimeToLive);
await blob.UploadFromByteArrayAsync(message.Body, 0, message.Body.Length).ConfigureAwait(false);
message.Body = null;
message.UserProperties[configuration.MessagePropertyToIdentifyAttachmentBlob] = blob.Name;
if (!configuration.SasTokenValidationTime.HasValue)
{
return(message);
}
var sasUri = TokenGenerator.GetBlobSasUri(blob, configuration.SasTokenValidationTime.Value);
message.UserProperties[configuration.MessagePropertyForSasUri] = sasUri;
return(message);
}