Plugin Name: CounterFilter
Once per ticker interval a CounterFilter will generate a message of type heka .counter-output. The payload will contain text indicating the number of messages that matched the filter’s message_matcher value during that interval (i.e. it counts the messages the plugin received). Every ten intervals an extra message (also of type heka.counter-output) goes out, containing an aggregate count and average per second throughput of messages received.
Interval between generated counter messages, in seconds. Defaults to 5.
[CounterFilter] message_matcher = "Type != 'heka.counter-output'"