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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
/**
* Before running this C++ code example, set up your development environment, including your credentials.
*
* For more information, see the following documentation topic:
*
* https://docs.aws.amazon.com/sdk-for-cpp/v1/developer-guide/getting-started.html
*
* For information on the structure of the code examples and how to build and run the examples, see
* https://docs.aws.amazon.com/sdk-for-cpp/v1/developer-guide/getting-started-code-examples.html.
*
**/
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// snippet-start:[sqs.cpp.receive_message.inc]
# include <aws/core/Aws.h>
# include <aws/sqs/SQSClient.h>
# include <aws/sqs/model/ReceiveMessageRequest.h>
# include <iostream>
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// snippet-end:[sqs.cpp.receive_message.inc]
# include "sqs_samples.h"
// snippet-start:[cpp.example_code.sqs.ReceiveMessage]
//! Receive a message from an Amazon Simple Queue Service (Amazon SQS) queue.
/*!
\param queueUrl: An Amazon SQS queue URL.
\param clientConfiguration: AWS client configuration.
\return bool: Function succeeded.
*/
bool AwsDoc : : SQS : : receiveMessage ( const Aws : : String & queueUrl ,
const Aws : : Client : : ClientConfiguration & clientConfiguration ) {
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// snippet-start:[sqs.cpp.receive_message.code]
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Aws : : SQS : : SQSClient sqsClient ( clientConfiguration ) ;
Aws : : SQS : : Model : : ReceiveMessageRequest request ;
request . SetQueueUrl ( queueUrl ) ;
request . SetMaxNumberOfMessages ( 1 ) ;
const Aws : : SQS : : Model : : ReceiveMessageOutcome outcome = sqsClient . ReceiveMessage (
request ) ;
if ( outcome . IsSuccess ( ) ) {
const Aws : : Vector < Aws : : SQS : : Model : : Message > & messages =
outcome . GetResult ( ) . GetMessages ( ) ;
if ( ! messages . empty ( ) ) {
const Aws : : SQS : : Model : : Message & message = messages [ 0 ] ;
std : : cout < < " Received message: " < < std : : endl ;
std : : cout < < " MessageId: " < < message . GetMessageId ( ) < < std : : endl ;
std : : cout < < " ReceiptHandle: " < < message . GetReceiptHandle ( ) < < std : : endl ;
std : : cout < < " Body: " < < message . GetBody ( ) < < std : : endl < < std : : endl ;
}
else {
std : : cout < < " No messages received from queue " < < queueUrl < <
std : : endl ;
}
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}
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else {
std : : cerr < < " Error receiving message from queue " < < queueUrl < < " : "
< < outcome . GetError ( ) . GetMessage ( ) < < std : : endl ;
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}
// snippet-end:[sqs.cpp.receive_message.code]
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return outcome . IsSuccess ( ) ;
}
// snippet-end:[cpp.example_code.sqs.ReceiveMessage]
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/*
*
* main function
*
* Usage: 'run_receive_message <queue_url>'
*
* Prerequisites: An existing Amazon SQS queue.
*
*/
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# ifndef TESTING_BUILD
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int main ( int argc , char * * argv ) {
if ( argc ! = 2 ) {
std : : cout < < " Usage: run_receive_message <queue_url> " < < std : : endl ;
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return 1 ;
}
Aws : : SDKOptions options ;
Aws : : InitAPI ( options ) ;
{
Aws : : String queue_url = argv [ 1 ] ;
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// snippet-start:[cpp.example_code.sqs.ReceiveMessage.config]
Aws : : Client : : ClientConfiguration clientConfig ;
// Optional: Set to the AWS Region (overrides config file).
// clientConfig.region = "us-east-1";
// snippet-end:[cpp.example_code.sqs.ReceiveMessage.config]
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AwsDoc : : SQS : : receiveMessage ( queue_url , clientConfig ) ;
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}
Aws : : ShutdownAPI ( options ) ;
return 0 ;
}
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# endif // TESTING_BUILD
