DeleteMessagev2

DeleteMessagev2.go

This example deletes a message from an Amazon SQS queue.

go run DeleteMessagev2.go -q QUEUE-NAME -m MESSAGE-HANDLE

  • QUEUE-NAME is the name of the queue from which the message is deleted.
  • MESSAGE-HANDLE is the handle of the message to delete.

The unit test accepts similar values in config.json.

Source code

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX - License - Identifier: Apache - 2.0
package main

import (
	"context"
	"flag"
	"fmt"

	"github.com/aws/aws-sdk-go-v2/config"
	"github.com/aws/aws-sdk-go-v2/service/sqs"
)

// SQSDeleteMessageAPI defines the interface for the GetQueueUrl and DeleteMessage functions.
// We use this interface to test the functions using a mocked service.
type SQSDeleteMessageAPI interface {
	GetQueueUrl(ctx context.Context,
		params *sqs.GetQueueUrlInput,
		optFns ...func(*sqs.Options)) (*sqs.GetQueueUrlOutput, error)

	DeleteMessage(ctx context.Context,
		params *sqs.DeleteMessageInput,
		optFns ...func(*sqs.Options)) (*sqs.DeleteMessageOutput, error)
}

// GetQueueURL gets the URL of an Amazon SQS queue.
// Inputs:
//     c is the context of the method call, which includes the AWS Region.
//     api is the interface that defines the method call.
//     input defines the input arguments to the service call.
// Output:
//     If success, a GetQueueUrlOutput object containing the result of the service call and nil.
//     Otherwise, nil and an error from the call to GetQueueUrl.
func GetQueueURL(c context.Context, api SQSDeleteMessageAPI, input *sqs.GetQueueUrlInput) (*sqs.GetQueueUrlOutput, error) {
	return api.GetQueueUrl(c, input)
}

// RemoveMessage deletes a message from an Amazon SQS queue.
// Inputs:
//     c is the context of the method call, which includes the AWS Region.
//     api is the interface that defines the method call.
//     input defines the input arguments to the service call.
// Output:
//     If success, a DeleteMessageOutput object containing the result of the service call and nil.
//     Otherwise, nil and an error from the call to DeleteMessage.
func RemoveMessage(c context.Context, api SQSDeleteMessageAPI, input *sqs.DeleteMessageInput) (*sqs.DeleteMessageOutput, error) {
	return api.DeleteMessage(c, input)
}

func main() {
	queue := flag.String("q", "", "The name of the queue")
	messageHandle := flag.String("m", "", "The receipt handle of the message")
	flag.Parse()

	if *queue == "" || *messageHandle == "" {
		fmt.Println("You must supply a queue name (-q QUEUE) and message receipt handle (-m MESSAGE-HANDLE)")
		return
	}

	cfg, err := config.LoadDefaultConfig(context.TODO())
	if err != nil {
		panic("configuration error, " + err.Error())
	}

	client := sqs.NewFromConfig(cfg)

	qUInput := &sqs.GetQueueUrlInput{
		QueueName: queue,
	}

	// Get URL of queue
	result, err := GetQueueURL(context.TODO(), client, qUInput)
	if err != nil {
		fmt.Println("Got an error getting the queue URL:")
		fmt.Println(err)
		return
	}

	queueURL := result.QueueUrl

	dMInput := &sqs.DeleteMessageInput{
		QueueUrl:      queueURL,
		ReceiptHandle: messageHandle,
	}

	_, err = RemoveMessage(context.TODO(), client, dMInput)
	if err != nil {
		fmt.Println("Got an error deleting the message:")
		fmt.Println(err)
		return
	}

	fmt.Println("Deleted message from queue with URL " + *queueURL)
}

See the complete example in GitHub.