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use protobuf::Message;
use statefun_proto::kafka_egress::KafkaProducerRecord;
use crate::{Effects, EgressIdentifier};
pub trait KafkaEgress {
fn kafka_egress<M: Message>(&mut self, identifier: EgressIdentifier, topic: &str, message: M);
fn kafka_keyed_egress<M: Message>(
&mut self,
identifier: EgressIdentifier,
topic: &str,
key: &str,
message: M,
);
}
impl KafkaEgress for Effects {
fn kafka_egress<M: Message>(&mut self, identifier: EgressIdentifier, topic: &str, message: M) {
let kafka_record = egress_record(topic, message);
self.egress(identifier, kafka_record);
}
fn kafka_keyed_egress<M: Message>(
&mut self,
identifier: EgressIdentifier,
topic: &str,
key: &str,
message: M,
) {
let mut kafka_record = egress_record(topic, message);
kafka_record.set_key(key.to_owned());
self.egress(identifier, kafka_record);
}
}
fn egress_record<M: Message>(topic: &str, value: M) -> KafkaProducerRecord {
let mut result = KafkaProducerRecord::new();
result.set_topic(topic.to_owned());
result.set_value_bytes(value.write_to_bytes().expect("Could not serialize value."));
result
}