public async override Task Mailbox(
IAsyncStreamReader <ForwardMailMessage> requestStream,
IServerStreamWriter <MailboxMessage> responseStream,
ServerCallContext context)
{
var mailboxName = context.RequestHeaders.Single(e => e.Key == "mailbox-name").Value;
var mailQueue = _messageQueueRepository.GetMailQueue(mailboxName);
_logger.LogInformation($"Connected to {mailboxName}");
mailQueue.Changed += ReportChanges;
try
{
while (await requestStream.MoveNext())
{
if (mailQueue.TryForwardMail(out var message))
{
_logger.LogInformation($"Forwarded mail: {message.Content}");
}
else
{
_logger.LogWarning("No mail to forward.");
}
}
}
finally
{
mailQueue.Changed -= ReportChanges;
}
_logger.LogInformation($"{mailboxName} disconnected");
async Task ReportChanges((int totalCount, int fowardCount, MailboxMessage.Types.Reason reason) state)
{
await responseStream.WriteAsync(new MailboxMessage
{
Forwarded = state.fowardCount,
New = state.totalCount - state.fowardCount,
Reason = state.reason
});
}
}