use futures::stream::StreamExt; // 引入 StreamExt 以使用 next() 方法
use rdkafka::config::ClientConfig;
use rdkafka::consumer::{CommitMode, Consumer, StreamConsumer};
use rdkafka::error::KafkaResult;
use rdkafka::message::{Message};async fn run_consumer() -> KafkaResult<()> {let consumer: StreamConsumer = ClientConfig::new().set("group.id", "test_group").set("bootstrap.servers", "localhost:9092").set("enable.auto.commit", "true").set("session.timeout.ms", "6000").set("auto.offset.reset", "earliest").create().expect("Consumer creation failed");consumer.subscribe(&["test_topic"]).expect("Can't subscribe to specified topics");let mut message_stream = consumer.stream();while let Some(message) = message_stream.next().await {match message {Ok(m) => {match m.payload_view::<str>() {Some(Ok(payload)) => {println!("Key: '{:?}', Payload: '{}'", m.key(), payload);}Some(Err(e)) => {eprintln!("Error while deserializing message payload: {:?}", e);}None => {println!("Key: '{:?}', Payload: <empty>", m.key());}}consumer.commit_message(&m, CommitMode::Async)?;}Err(e) => eprintln!("Kafka error: {}", e),}}Ok(())
}fn main() {let runtime = tokio::runtime::Runtime::new().unwrap();runtime.block_on(run_consumer()).unwrap();
}
[dependencies]
rdkafka = "0.36.2"
tokio = { version = "1.36.0", features = ["full"] }
futures = "0.3.30"
[target.x86_64-unknown-linux-musl]
linker = "x86_64-linux-musl-gcc"
