public async Task PublishAsync(Type messageType, object message, TimeSpan?delay = null, MessageOptions options = null, CancellationToken cancellationToken = default)
{
if (messageType == null || message == null)
{
return;
}
await EnsureTopicCreatedAsync(cancellationToken).AnyContext();
await PublishImplAsync(GetMappedMessageType(messageType), message, delay, options ?? new MessageOptions(), cancellationToken).AnyContext();
}
protected abstract Task PublishImplAsync(string messageType, object message, TimeSpan?delay, MessageOptions options, CancellationToken cancellationToken);
public static Task PublishAsync <T>(this IMessagePublisher publisher, T message, TimeSpan?delay = null, MessageOptions options = null) where T : class
{
return(publisher.PublishAsync(typeof(T), message, delay, options));
}
public Task PublishAsync(Type messageType, object message, TimeSpan?delay = null, MessageOptions options = null, CancellationToken cancellationToken = default)
{
return(Task.CompletedTask);
}
protected override async Task PublishImplAsync(string messageType, object message, TimeSpan?delay, MessageOptions options, CancellationToken cancellationToken)
{
Interlocked.Increment(ref _messagesSent);
_messageCounts.AddOrUpdate(messageType, t => 1, (t, c) => c + 1);
var mappedType = GetMappedMessageType(messageType);
if (_subscribers.IsEmpty)
{
return;
}
bool isTraceLogLevelEnabled = _logger.IsEnabled(LogLevel.Trace);
if (delay.HasValue && delay.Value > TimeSpan.Zero)
{
if (isTraceLogLevelEnabled)
{
_logger.LogTrace("Schedule delayed message: {MessageType} ({Delay}ms)", messageType, delay.Value.TotalMilliseconds);
}
SendDelayedMessage(mappedType, message, delay.Value);
return;
}
byte[] body = SerializeMessageBody(messageType, message);
var messageData = new Message(() => DeserializeMessageBody(messageType, body))
{
Type = messageType,
ClrType = mappedType,
Data = body
};
try {
await SendMessageToSubscribersAsync(messageData).AnyContext();
} catch (Exception ex) {
// swallow exceptions from subscriber handlers for the in memory bus
_logger.LogWarning(ex, "Error sending message to subscribers: {ErrorMessage}", ex.Message);
}
}
