PulsarEx.ConsumerCallback behaviour (pulsar_ex v0.1.1)
Always handle messages in batch. If the batch_size is set to 1, then only up to 1 message will be handled. If batch_size is n, then handle_messages will handle 0 < messages <= n.
Expect the return of a list of [{:ack | :nack, msg}], as the consumer genserver will use it to ack back to pulsar
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state()
Specs
state() :: map()
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handle_messages(list, state)
Specs
handle_messages( [ %PulsarEx.Pulserl.Structures.ConsumerMessage{ consumer: term(), event_time: term(), id: term(), ordering_key: term(), partition_key: term(), payload: term(), properties: term(), publish_time: term(), redelivery_count: term(), topic: term() } ], state() ) :: [ {:ack | :nack, %PulsarEx.Pulserl.Structures.ConsumerMessage{ consumer: term(), event_time: term(), id: term(), ordering_key: term(), partition_key: term(), payload: term(), properties: term(), publish_time: term(), redelivery_count: term(), topic: term() }} ]