isabella232 / mq-go

SQS Consumer Server for Go

MQ - A package for consuming SQS message queues

The goal of this project is to provide tooling to utilize SQS effectively in Go.

Features

• Familiar net/http Handler interface.
• Retry with expontial backoff via visibility timeouts and dead letter queues.
• Router Handler for multiplexing messages over a single queue.
• Server with configurable concurrency and graceful shutdown.
• Automatic batch fetching and deletion.
• Publisher for batch sending.
• Opentracing support

Documentation

https://godoc.org/github.com/remind101/mq-go

QuickStart

func main() {
	queueURL := "https://sqs.us-east-2.amazonaws.com/123456789012/MyQueue"

	h := mq.HandlerFunc(func(m *mq.Message) error {
		fmt.Printf("Received message: %s", aws.StringValue(m.SQSMessage.Body))

		// Returning no error signifies the message was processed successfully.
		// The Server will queue the message for deletion.
		return nil
	})

	// Configure mq.Server
	s := mq.NewServer(queueURL, h)

	// Start a loop to receive SQS messages and pass them to the Handler.
	s.Start()
	defer s.Shutdown(context.Background())

	// Start a publisher
	p := mq.NewPublisher(queueURL)
	p.Start()
	defer p.Shutdown(context.Background())

	// Publish messages (will be batched).
	p.Publish(&sqs.SendMessageBatchRequestEntry{
		MessageBody: aws.String("Hello"),
	})
	p.Publish(&sqs.SendMessageBatchRequestEntry{
		MessageBody: aws.String("World!"),
	})
}