# pulsar-client-go

**Repository Path**: yonnhee/pulsar-client-go

## Basic Information

- **Project Name**: pulsar-client-go
- **Description**: No description available
- **Primary Language**: Go
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-01-11
- **Last Updated**: 2022-01-11

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

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# Apache Pulsar Go Client Library

A Go client library for the [Apache Pulsar](https://pulsar.incubator.apache.org/) project.

## Goal

This projects is developing a pure-Go client library for Pulsar that does not
depend on the C++ Pulsar library.

Once feature parity and stability are reached, this will supersede the current
CGo based library.

## Requirements

- Go 1.13+

## Status

Check the Projects page at https://github.com/apache/pulsar-client-go/projects for
tracking the status and the progress.

## Usage

Import the client library:

```go
import "github.com/apache/pulsar-client-go/pulsar"
```

Create a Producer:

```go
client, err := pulsar.NewClient(pulsar.ClientOptions{
    URL: "pulsar://localhost:6650",
})

defer client.Close()

producer, err := client.CreateProducer(pulsar.ProducerOptions{
	Topic: "my-topic",
})

_, err = producer.Send(context.Background(), &pulsar.ProducerMessage{
	Payload: []byte("hello"),
})

defer producer.Close()

if err != nil {
    fmt.Println("Failed to publish message", err)
} else {
    fmt.Println("Published message")
}
```

Create a Consumer:

```go
client, err := pulsar.NewClient(pulsar.ClientOptions{
    URL: "pulsar://localhost:6650",
})

defer client.Close()

consumer, err := client.Subscribe(pulsar.ConsumerOptions{
        Topic:            "my-topic",
        SubscriptionName: "my-sub",
        Type:             pulsar.Shared,
    })

defer consumer.Close()

msg, err := consumer.Receive(context.Background())
    if err != nil {
        log.Fatal(err)
    }

fmt.Printf("Received message msgId: %#v -- content: '%s'\n",
            msg.ID(), string(msg.Payload()))

```

Create a Reader:

```go
client, err := pulsar.NewClient(pulsar.ClientOptions{URL: "pulsar://localhost:6650"})
if err != nil {
	log.Fatal(err)
}

defer client.Close()

reader, err := client.CreateReader(pulsar.ReaderOptions{
	Topic:          "topic-1",
	StartMessageID: pulsar.EarliestMessageID(),
})
if err != nil {
	log.Fatal(err)
}
defer reader.Close()

for reader.HasNext() {
	msg, err := reader.Next(context.Background())
	if err != nil {
		log.Fatal(err)
	}

	fmt.Printf("Received message msgId: %#v -- content: '%s'\n",
		msg.ID(), string(msg.Payload()))
}
```

## Contributing

Contributions are welcomed and greatly appreciated. See [CONTRIBUTING.md](CONTRIBUTING.md) for details on submitting patches and the contribution workflow.

## Contact

##### Mailing lists

| Name                                                                          | Scope                           |                                                                 |                                                                     |                                                                              |
|:------------------------------------------------------------------------------|:--------------------------------|:----------------------------------------------------------------|:--------------------------------------------------------------------|:-----------------------------------------------------------------------------|
| [users@pulsar.apache.org](mailto:users@pulsar.apache.org) | User-related discussions        | [Subscribe](mailto:users-subscribe@pulsar.apache.org) | [Unsubscribe](mailto:users-unsubscribe@pulsar.apache.org) | [Archives](http://mail-archives.apache.org/mod_mbox/pulsar-users/) |
| [dev@pulsar.apache.org](mailto:dev@pulsar.apache.org)     | Development-related discussions | [Subscribe](mailto:dev-subscribe@pulsar.apache.org)   | [Unsubscribe](mailto:dev-unsubscribe@pulsar.apache.org)   | [Archives](http://mail-archives.apache.org/mod_mbox/pulsar-dev/)   |

##### Slack

Pulsar slack channel `#dev-go` at https://apache-pulsar.slack.com/

You can self-register at https://apache-pulsar.herokuapp.com/

## License

Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0