How do you consume the latest message from Kafka topic?

Question

I'm using KaafkaJS to connect and consume the kafka messsages. I'm using the following code to consume messages. But it fetches all the messages but I would like to store the last message in the variable messageValue. Can someone help me with it please.

await consumer.run({ 
            eachMessage: async (data) => {
                    messageValue = data.message.value.toString('utf8').trim()
            }
        })
console.log(messageValue)

Answer 1

you just need to add fromBeggining: false

https://kafka.js.org/docs/consuming#a-name-from-beginning-a-frombeginning

Answer 2

This below code worked for me. Reference

const consume = async () => {
    await consumer.connect()
    await consumer.subscribe({ topic, fromBeginning: true })
    await consumer.run({
        eachMessage: ({ message }) => { 
            console.log(`received message: ${message.value}`)
        },
    })
}