public override async Task PublishMessageAsync(IMessage message, CancellationToken cancellationToken)
{
if (message is IDomainEvent domainEvent && _pubModule.HasChannel(message.GetType()))
{
ChannelMeta channel = _pubModule.GetChannel(domainEvent.GetType());
IDatabase database = _connModule.GetDatabase(channel.DatabaseName);
// Only publish the domain-event if it passes the predicate associated
// with the channel:
if (!channel.Applies(domainEvent))
{
return;
}
byte[] messageValue = _serialization.Serialize(domainEvent, channel.ContentType);
// Build the name of the channel to publish to by combining the static channel
// name with the optional event state data.
string eventStateData = channel.GetEventStateData(domainEvent);
string channelName = $"{channel.ChannelName}.{eventStateData}";
LogChannelPublish(domainEvent, channel.DatabaseName, channelName);
byte[] messageData = ChannelMessageEncoder.Pack(channel.ContentType, messageValue);
await database.PublishAsync(channelName, messageData).ConfigureAwait(false);
}
}
protected ChannelMeta <TDomainEvent> AddChannel <TDomainEvent>(string databaseName, string channel)
where TDomainEvent : IDomainEvent
{
var meta = new ChannelMeta <TDomainEvent>(databaseName, channel);
_channels.Add(meta);
return(meta);
}
