Kafka wrapper on top of kafka-go

go get -u github.com/kazhuravlev/kafka

Consumer

Example with handling messages in json and protobuf format (depends on message header enc). You can write own algorithm to detect which decoder should used or use strict decoder like new(JSONDecoder).

package main

import (
	"context"
	"fmt"
	"github.com/kazhuravlev/kafka/consumer"
)

type Payload struct {
	UserID int64
}

func main() {
	cons, err := consumer.New[Payload](consumer.NewOptions(
		consumer.WithBrokers([]string{"127.0.0.1:9092"}),
		consumer.WithDecoder(&consumer.HeaderDependantDecoder{
			HeaderName: "enc",
			Decoders: map[string]consumer.IDecoder{
				"json":  new(consumer.JSONDecoder),
				"proto": new(consumer.ProtoJSONDecoder),
			},
			DefaultDecoder: new(consumer.AlwaysFailDecoder),
		}),
	))
	if err != nil {
		panic(err)
	}

	if err := cons.Run(context.TODO()); err != nil {
		panic(err)
	}

	for m := range cons.C() {
		fmt.Println(m)
	}
}