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Apache Pulsar Go Client Library
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ggx-trade/pulsar-client-go
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A Go client library forApache Pulsar. For the supported Pulsar features, seeClient Feature Matrix.
This project is a pure-Go client library for Pulsar that does notdepend on the C++ Pulsar library.
Once feature parity and stability are reached, this will supersede the currentCGo-based library.
- Go 1.18+
Note:
While this library should work with Golang versions as early as 1.16, any bugs specific to versions earlier than 1.18 may not be fixed.
Check the Projects page athttps://github.com/apache/pulsar-client-go/projects fortracking the status and the progress.
Import the client library:
import"github.com/apache/pulsar-client-go/pulsar"
Create a Producer:
client,err:=pulsar.NewClient(pulsar.ClientOptions{URL:"pulsar://localhost:6650",})deferclient.Close()producer,err:=client.CreateProducer(pulsar.ProducerOptions{Topic:"my-topic",})_,err=producer.Send(context.Background(),&pulsar.ProducerMessage{Payload: []byte("hello"),})deferproducer.Close()iferr!=nil {fmt.Println("Failed to publish message",err)}else {fmt.Println("Published message")}
Create a Consumer:
client,err:=pulsar.NewClient(pulsar.ClientOptions{URL:"pulsar://localhost:6650",})deferclient.Close()consumer,err:=client.Subscribe(pulsar.ConsumerOptions{Topic:"my-topic",SubscriptionName:"my-sub",Type:pulsar.Shared, })deferconsumer.Close()msg,err:=consumer.Receive(context.Background())iferr!=nil {log.Fatal(err) }fmt.Printf("Received message msgId: %#v -- content: '%s'\n",msg.ID(),string(msg.Payload()))
Create a Reader:
client,err:=pulsar.NewClient(pulsar.ClientOptions{URL:"pulsar://localhost:6650"})iferr!=nil {log.Fatal(err)}deferclient.Close()reader,err:=client.CreateReader(pulsar.ReaderOptions{Topic:"topic-1",StartMessageID:pulsar.EarliestMessageID(),})iferr!=nil {log.Fatal(err)}deferreader.Close()forreader.HasNext() {msg,err:=reader.Next(context.Background())iferr!=nil {log.Fatal(err)}fmt.Printf("Received message msgId: %#v -- content: '%s'\n",msg.ID(),string(msg.Payload()))}
Build the sources:
make buildRun the tests:
make testRun the tests with specific versions of GOLANG and PULSAR:
make test GOLANG_VERSION=1.18 PULSAR_VERSION=2.10.0Contributions are welcomed and greatly appreciated. SeeCONTRIBUTING.md for details on submitting patches and the contribution workflow.
If your contribution adds Pulsar features for Go clients, you need to update both thePulsar docs and theClient Feature Matrix. SeeContribution Guide for more details.
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Pulsar slack channel#dev-go athttps://apache-pulsar.slack.com/
You can self-register athttps://apache-pulsar.herokuapp.com/
Licensed under the Apache License, Version 2.0:http://www.apache.org/licenses/LICENSE-2.0
If you've upgraded from a previous version of this library, you may run into an 'ambiguous import' error when building.
github.com/apache/pulsar-client-go/oauth2: ambiguous import: found package github.com/apache/pulsar-client-go/oauth2 in multiple modulesThe fix for this is to make sure you don't have any references in yourgo.mod file to the old oauth2 module path. So remove any linessimilar to the following, and then rungo mod tidy.
github.com/apache/pulsar-client-go/oauth2 v0.0.0-20220630195735-e95cf0633348 // indirect