Since logstash got a zeromq output, you can simply integrate it with zerolog.
Logstash can act like the forwarder, all you need to do is to configure your logstash to output logs to a zeromq pub socket, for example :
input { tcp { port => 6000 } } output { zeromq { address => ["tcp://*:6001"] mode => "server" topology => "pubsub" topic => "apache-logs" } }
Note that in pubsub mode you can also specify a topic to route logs to correct receivers.
Maybe you don't need any forwarder at all and you only want a simple receiver to workers pattern. Logstash can also replaces receiver or sends logs directly to workers, for example :
With this configuration file, all workers will receive tasks directly from logstash, avoiding the use of receiver