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Creating a Kafka theme in Sarama

Can i create a kafka theme in sarama? I know the java API allows you to create themes, but I couldn't find any information on how to do this in sarama. if possible an example or explanation on which api i should use would be great thanks in advance

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3 answers


Can use Sarama to manage themes in Kafka. I am writing a terraform provider to manage Kafka themes and use sarama to do the heavy lifting in the backend.

You have to use the sarama.Broker apis to do this. for example



// Set broker configuration
broker := sarama.NewBroker("localhost:9092")

// Additional configurations. Check sarama doc for more info
config := sarama.NewConfig()
config.Version = sarama.V1_0_0_0

// Open broker connection with configs defined above
broker.Open(config)

// check if the connection was OK
connected, err := broker.Connected()
if err != nil {
    log.Print(err.Error())
}
log.Print(connected)

// Setup the Topic details in CreateTopicRequest struct
topic := "blah25s"
topicDetail := &sarama.TopicDetail{}
topicDetail.NumPartitions = int32(1)
topicDetail.ReplicationFactor = int16(1)
topicDetail.ConfigEntries = make(map[string]*string)

topicDetails := make(map[string]*sarama.TopicDetail)
topicDetails[topic] = topicDetail

request := sarama.CreateTopicsRequest{
    Timeout:      time.Second * 15,
    TopicDetails: topicDetails,
}

// Send request to Broker
response, err := broker.CreateTopics(&request)

// handle errors if any
if err != nil {
    log.Printf("%#v", &err)
}
t := response.TopicErrors
for key, val := range t {
    log.Printf("Key is %s", key)
    log.Printf("Value is %#v", val.Err.Error())
    log.Printf("Value3 is %#v", val.ErrMsg)
}
log.Printf("the response is %#v", response)

// close connection to broker
broker.Close()

You can take a look at the working code on github . Don't forget to start the kafka broker and import all golang dependencies before running the code.

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Better to use: https://github.com/Shopify/sarama/blob/master/admin.go instead of connecting directly to the broker.

This handles a lot of cases like:



  1. You can add multiple broker addresses for cluster configuration.
  2. Determining which broker acts as a controller is done automatically.
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Indeed, in newer versions of Sarama, you can use ClusterAdmin to create themes. Below you can find some sample code:

package main

import (
    "github.com/Shopify/sarama" // Sarama 1.22.0
    "log"
)

func main() {
    brokerAddrs := []string{"localhost:9092"}
    config := sarama.NewConfig()
    config.Version = sarama.V2_1_0_0
    admin, err := sarama.NewClusterAdmin(brokerAddrs, config)
    if err != nil {
        log.Fatal("Error while creating cluster admin: ", err.Error())
    }
    defer func() { _ = admin.Close() }()
    err = admin.CreateTopic("topic.test.1", &sarama.TopicDetail{
        NumPartitions:     1,
        ReplicationFactor: 1,
    }, false)
    if err != nil {
        log.Fatal("Error while creating topic: ", err.Error())
    }
}
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