├── .github └── workflows │ └── go.yml ├── .gitignore ├── LICENSE ├── Makefile ├── README.md ├── cmd ├── consumer │ └── main.go └── producer │ └── main.go ├── go.mod ├── go.sum ├── header.jpg └── producer.png /.github/workflows/go.yml: -------------------------------------------------------------------------------- 1 | # This workflow will build a golang project 2 | # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go 3 | 4 | name: Go 5 | 6 | on: 7 | push: 8 | branches: [ "master" ] 9 | pull_request: 10 | branches: [ "master" ] 11 | 12 | jobs: 13 | 14 | build: 15 | runs-on: ubuntu-latest 16 | steps: 17 | - uses: actions/checkout@v3 18 | 19 | - name: Set up Go 20 | uses: actions/setup-go@v4 21 | with: 22 | go-version: '1.20' 23 | 24 | - name: Build 25 | run: go build -v ./... 26 | 27 | - name: Test 28 | run: go test -v ./... 29 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.swp 2 | vendor/ 3 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2017 Vinicius Souza 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | NAME=go-kafka-example 2 | VERSION=0.0.1 3 | AUTHOR=vsouza 4 | 5 | .PHONY: run-producer 6 | ## run-producer: Run consumer 7 | run-producer: 8 | @go run cmd/producer/main.go 9 | 10 | .PHONY: run-consumer 11 | ## run-consumer: Run consumer 12 | run-consumer: 13 | @go run cmd/consumer/main.go 14 | 15 | .PHONY: deps-install 16 | ## deps-install: Install packages and dependencies 17 | deps-install: 18 | @go mod download 19 | 20 | .PHONY: help 21 | all: help 22 | # help: show this help message 23 | help: Makefile 24 | @echo 25 | @echo " Choose a command to run in "$(APP_NAME)":" 26 | @echo 27 | @sed -n 's/^##//p' $< | column -t -s ':' | sed -e 's/^/ /' 28 | @echo 29 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 |

Golang Kafka Example

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8 | 9 | 10 | 11 | 12 | 13 |

14 | 15 | >Sample Golang Kafka Consumer and Producer 16 | 17 | 18 | ## Setup 19 | 20 | [Apache Kafka Quickstart](https://kafka.apache.org/quickstart) 21 | 22 | __Producer__ 23 | 24 | `go run cmd/producer/main.go` 25 | 26 | ![](producer.png) 27 | 28 | __Consumer__ 29 | 30 | flags: 31 | 32 | * brokerList 33 | * topic 34 | * partition (default: 0) 35 | * offsetType 36 | * messageCountStart (default: 0) 37 | 38 | `go run cmd/consumer/main.go` 39 | 40 | ``` 41 | Received messages Something Cool #1 42 | Received messages Something Cool #2 43 | Received messages Something Cool #3 44 | Received messages Something Cool #4 45 | Received messages Something Cool #5 46 | ``` 47 | 48 | ## Contribute 49 | 50 | We would love you for the contribution to **go-kafka-example**, check the ``LICENSE`` file for more info. 51 | 52 | ## Meta 53 | 54 | Vinicius Souza – [@iamvsouza](https://twitter.com/iamvsouza) – hi@vsouza.com 55 | [https://github.com/vsouza/go-kafka-example](https://github.com/vsouza/go-kafka-example) 56 | 57 | 58 | [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fvsouza%2Fgo-kafka-example.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2Fvsouza%2Fgo-kafka-example?ref=badge_large) 59 | -------------------------------------------------------------------------------- /cmd/consumer/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "log" 5 | "os" 6 | "os/signal" 7 | 8 | kingpin "gopkg.in/alecthomas/kingpin.v2" 9 | 10 | "github.com/Shopify/sarama" 11 | ) 12 | 13 | var ( 14 | brokerList = kingpin.Flag("brokerList", "List of brokers to connect").Default("localhost:9092").Strings() 15 | topic = kingpin.Flag("topic", "Topic name").Default("important").String() 16 | partition = kingpin.Flag("partition", "Partition number").Default("0").String() 17 | offsetType = kingpin.Flag("offsetType", "Offset Type (OffsetNewest | OffsetOldest)").Default("-1").Int() 18 | messageCountStart = kingpin.Flag("messageCountStart", "Message counter start from:").Int() 19 | ) 20 | 21 | func main() { 22 | kingpin.Parse() 23 | config := sarama.NewConfig() 24 | config.Consumer.Return.Errors = true 25 | brokers := *brokerList 26 | master, err := sarama.NewConsumer(brokers, config) 27 | if err != nil { 28 | log.Panic(err) 29 | } 30 | defer func() { 31 | if err := master.Close(); err != nil { 32 | log.Panic(err) 33 | } 34 | }() 35 | consumer, err := master.ConsumePartition(*topic, 0, sarama.OffsetOldest) 36 | if err != nil { 37 | log.Panic(err) 38 | } 39 | signals := make(chan os.Signal, 1) 40 | signal.Notify(signals, os.Interrupt) 41 | doneCh := make(chan struct{}) 42 | go func() { 43 | for { 44 | select { 45 | case err := <-consumer.Errors(): 46 | log.Println(err) 47 | case msg := <-consumer.Messages(): 48 | *messageCountStart++ 49 | log.Println("Received messages", string(msg.Key), string(msg.Value)) 50 | case <-signals: 51 | log.Println("Interrupt is detected") 52 | doneCh <- struct{}{} 53 | } 54 | } 55 | }() 56 | <-doneCh 57 | log.Println("Processed", *messageCountStart, "messages") 58 | } 59 | -------------------------------------------------------------------------------- /cmd/producer/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "log" 5 | 6 | kingpin "gopkg.in/alecthomas/kingpin.v2" 7 | 8 | "github.com/Shopify/sarama" 9 | ) 10 | 11 | var ( 12 | brokerList = kingpin.Flag("brokerList", "List of brokers to connect").Default("localhost:9092").Strings() 13 | topic = kingpin.Flag("topic", "Topic name").Default("important").String() 14 | maxRetry = kingpin.Flag("maxRetry", "Retry limit").Default("5").Int() 15 | ) 16 | 17 | func main() { 18 | kingpin.Parse() 19 | config := sarama.NewConfig() 20 | config.Producer.RequiredAcks = sarama.WaitForAll 21 | config.Producer.Retry.Max = *maxRetry 22 | config.Producer.Return.Successes = true 23 | producer, err := sarama.NewSyncProducer(*brokerList, config) 24 | if err != nil { 25 | log.Panic(err) 26 | } 27 | defer func() { 28 | if err := producer.Close(); err != nil { 29 | log.Panic(err) 30 | } 31 | }() 32 | msg := &sarama.ProducerMessage{ 33 | Topic: *topic, 34 | Value: sarama.StringEncoder("Something Cool"), 35 | } 36 | partition, offset, err := producer.SendMessage(msg) 37 | if err != nil { 38 | log.Panic(err) 39 | } 40 | log.Printf("Message is stored in topic(%s)/partition(%d)/offset(%d)\n", *topic, partition, offset) 41 | } 42 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/vsouza/go-kafka/example 2 | 3 | go 1.14 4 | 5 | require ( 6 | github.com/Shopify/sarama v1.28.0 7 | github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38 // indirect 8 | github.com/alecthomas/colour v0.1.0 // indirect 9 | github.com/alecthomas/repr v0.0.0-20210301060118-828286944d6a // indirect 10 | github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc // indirect 11 | github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect 12 | github.com/mattn/go-isatty v0.0.12 // indirect 13 | github.com/sergi/go-diff v1.1.0 // indirect 14 | gopkg.in/alecthomas/kingpin.v2 v2.2.4 15 | ) 16 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | github.com/Shopify/sarama v1.28.0 h1:lOi3SfE6OcFlW9Trgtked2aHNZ2BIG/d6Do+PEUAqqM= 2 | github.com/Shopify/sarama v1.28.0/go.mod h1:j/2xTrU39dlzBmsxF1eQ2/DdWrxyBCl6pzz7a81o/ZY= 3 | github.com/Shopify/toxiproxy v2.1.4+incompatible h1:TKdv8HiTLgE5wdJuEML90aBgNWsokNbMijUGhmcoBJc= 4 | github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod 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