static async Task <string> LoadAttachment(IDataBus dataBus, string id)
{
using (var destination = new MemoryStream())
{
using (var source = await dataBus.OpenRead(id))
{
await source.CopyToAsync(destination);
}
return(Encoding.UTF8.GetString(destination.ToArray()));
}
}
/// <summary>
/// Hydrates the message, if it was dehydrated
/// </summary>
public async Task Process(IncomingStepContext context, Func <Task> next)
{
var transportMessage = context.Load <TransportMessage>();
if (transportMessage.Headers.TryGetValue(Headers.MessagePayloadAttachmentId, out var attachmentId))
{
using (var destination = new MemoryStream())
{
using (var source = await _dataBus.OpenRead(attachmentId))
{
await source.CopyToAsync(destination);
}
var body = destination.ToArray();
var headers = transportMessage.Headers.Clone();
headers.Remove(Headers.MessagePayloadAttachmentId);
context.Save(new TransportMessage(headers, body));
}
}
await next();
}