Aws::SQS::Model::ReceiveMessageRequest Class Reference

#include <ReceiveMessageRequest.h>

Inheritance diagram for Aws::SQS::Model::ReceiveMessageRequest:

Public Member Functions
	ReceiveMessageRequest ()
virtual const char *	GetServiceRequestName () const override
Aws::String	SerializePayload () const override
const Aws::String &	GetQueueUrl () const
bool	QueueUrlHasBeenSet () const
void	SetQueueUrl (const Aws::String &value)
void	SetQueueUrl (Aws::String &&value)
void	SetQueueUrl (const char *value)
ReceiveMessageRequest &	WithQueueUrl (const Aws::String &value)
ReceiveMessageRequest &	WithQueueUrl (Aws::String &&value)
ReceiveMessageRequest &	WithQueueUrl (const char *value)
const Aws::Vector< QueueAttributeName > &	GetAttributeNames () const
bool	AttributeNamesHasBeenSet () const
void	SetAttributeNames (const Aws::Vector< QueueAttributeName > &value)
void	SetAttributeNames (Aws::Vector< QueueAttributeName > &&value)
ReceiveMessageRequest &	WithAttributeNames (const Aws::Vector< QueueAttributeName > &value)
ReceiveMessageRequest &	WithAttributeNames (Aws::Vector< QueueAttributeName > &&value)
ReceiveMessageRequest &	AddAttributeNames (const QueueAttributeName &value)
ReceiveMessageRequest &	AddAttributeNames (QueueAttributeName &&value)
const Aws::Vector< Aws::String > &	GetMessageAttributeNames () const
bool	MessageAttributeNamesHasBeenSet () const
void	SetMessageAttributeNames (const Aws::Vector< Aws::String > &value)
void	SetMessageAttributeNames (Aws::Vector< Aws::String > &&value)
ReceiveMessageRequest &	WithMessageAttributeNames (const Aws::Vector< Aws::String > &value)
ReceiveMessageRequest &	WithMessageAttributeNames (Aws::Vector< Aws::String > &&value)
ReceiveMessageRequest &	AddMessageAttributeNames (const Aws::String &value)
ReceiveMessageRequest &	AddMessageAttributeNames (Aws::String &&value)
ReceiveMessageRequest &	AddMessageAttributeNames (const char *value)
int	GetMaxNumberOfMessages () const
bool	MaxNumberOfMessagesHasBeenSet () const
void	SetMaxNumberOfMessages (int value)
ReceiveMessageRequest &	WithMaxNumberOfMessages (int value)
int	GetVisibilityTimeout () const
bool	VisibilityTimeoutHasBeenSet () const
void	SetVisibilityTimeout (int value)
ReceiveMessageRequest &	WithVisibilityTimeout (int value)
int	GetWaitTimeSeconds () const
bool	WaitTimeSecondsHasBeenSet () const
void	SetWaitTimeSeconds (int value)
ReceiveMessageRequest &	WithWaitTimeSeconds (int value)
const Aws::String &	GetReceiveRequestAttemptId () const
bool	ReceiveRequestAttemptIdHasBeenSet () const
void	SetReceiveRequestAttemptId (const Aws::String &value)
void	SetReceiveRequestAttemptId (Aws::String &&value)
void	SetReceiveRequestAttemptId (const char *value)
ReceiveMessageRequest &	WithReceiveRequestAttemptId (const Aws::String &value)
ReceiveMessageRequest &	WithReceiveRequestAttemptId (Aws::String &&value)
ReceiveMessageRequest &	WithReceiveRequestAttemptId (const char *value)
Public Member Functions inherited from Aws::SQS::SQSRequest
virtual	~SQSRequest ()
void	AddParametersToRequest (Aws::Http::HttpRequest &httpRequest) const
Aws::Http::HeaderValueCollection	GetHeaders () const override
Public Member Functions inherited from Aws::AmazonSerializableWebServiceRequest
	AmazonSerializableWebServiceRequest ()
virtual	~AmazonSerializableWebServiceRequest ()
std::shared_ptr< Aws::IOStream >	GetBody () const override
Public Member Functions inherited from Aws::AmazonWebServiceRequest
	AmazonWebServiceRequest ()
virtual	~AmazonWebServiceRequest ()=default
virtual void	AddQueryStringParameters (Aws::Http::URI &uri) const
virtual void	PutToPresignedUrl (Aws::Http::URI &uri) const
virtual bool	IsStreaming () const
virtual bool	IsEventStreamRequest () const
virtual bool	SignBody () const
virtual bool	IsChunked () const
virtual void	SetRequestSignedHandler (const RequestSignedHandler &handler)
virtual const RequestSignedHandler &	GetRequestSignedHandler () const
const Aws::IOStreamFactory &	GetResponseStreamFactory () const
void	SetResponseStreamFactory (const Aws::IOStreamFactory &factory)
virtual void	SetDataReceivedEventHandler (const Aws::Http::DataReceivedEventHandler &dataReceivedEventHandler)
virtual void	SetDataSentEventHandler (const Aws::Http::DataSentEventHandler &dataSentEventHandler)
virtual void	SetContinueRequestHandler (const Aws::Http::ContinueRequestHandler &continueRequestHandler)
virtual void	SetDataReceivedEventHandler (Aws::Http::DataReceivedEventHandler &&dataReceivedEventHandler)
virtual void	SetDataSentEventHandler (Aws::Http::DataSentEventHandler &&dataSentEventHandler)
virtual void	SetContinueRequestHandler (Aws::Http::ContinueRequestHandler &&continueRequestHandler)
virtual void	SetRequestRetryHandler (const RequestRetryHandler &handler)
virtual void	SetRequestRetryHandler (RequestRetryHandler &&handler)
virtual const Aws::Http::DataReceivedEventHandler &	GetDataReceivedEventHandler () const
virtual const Aws::Http::DataSentEventHandler &	GetDataSentEventHandler () const
virtual const Aws::Http::ContinueRequestHandler &	GetContinueRequestHandler () const
virtual const RequestRetryHandler &	GetRequestRetryHandler () const
virtual bool	ShouldComputeContentMd5 () const

Protected Member Functions
void	DumpBodyToUrl (Aws::Http::URI &uri) const override
Protected Member Functions inherited from Aws::SQS::SQSRequest
virtual Aws::Http::HeaderValueCollection	GetRequestSpecificHeaders () const

Detailed Description

See Also:

AWS API Reference

Definition at line 26 of file ReceiveMessageRequest.h.

Constructor & Destructor Documentation

ReceiveMessageRequest()

Aws::SQS::Model::ReceiveMessageRequest::ReceiveMessageRequest

(

)

Member Function Documentation

AddAttributeNames() [1/2]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::AddAttributeNames ( const QueueAttributeName &  value )

inline

A list of attributes that need to be returned along with each message. These attributes include:

• All – Returns all values.

• ApproximateFirstReceiveTimestamp – Returns the time the message was first received from the queue (epoch time in milliseconds).

• ApproximateReceiveCount – Returns the number of times a message has been received across all queues but not deleted.

• AWSTraceHeader – Returns the AWS X-Ray trace header string.

• SenderId

  • For an IAM user, returns the IAM user ID, for example ABCDEFGHI1JKLMNOPQ23R.

  • For an IAM role, returns the IAM role ID, for example ABCDE1F2GH3I4JK5LMNOP:i-a123b456.

• SentTimestamp – Returns the time the message was sent to the queue (epoch time in milliseconds).

• MessageDeduplicationId – Returns the value provided by the producer that calls the SendMessage action.

• MessageGroupId – Returns the value provided by the producer that calls the SendMessage action. Messages with the same MessageGroupId are returned in sequence.

• SequenceNumber – Returns the value provided by Amazon SQS.

Definition at line 273 of file ReceiveMessageRequest.h.

AddAttributeNames() [2/2]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::AddAttributeNames ( QueueAttributeName &&  value )

inline

A list of attributes that need to be returned along with each message. These attributes include:

• All – Returns all values.

• ApproximateFirstReceiveTimestamp – Returns the time the message was first received from the queue (epoch time in milliseconds).

• ApproximateReceiveCount – Returns the number of times a message has been received across all queues but not deleted.

• AWSTraceHeader – Returns the AWS X-Ray trace header string.

• SenderId

  • For an IAM user, returns the IAM user ID, for example ABCDEFGHI1JKLMNOPQ23R.

  • For an IAM role, returns the IAM role ID, for example ABCDE1F2GH3I4JK5LMNOP:i-a123b456.

• SentTimestamp – Returns the time the message was sent to the queue (epoch time in milliseconds).

• MessageDeduplicationId – Returns the value provided by the producer that calls the SendMessage action.

• MessageGroupId – Returns the value provided by the producer that calls the SendMessage action. Messages with the same MessageGroupId are returned in sequence.

• SequenceNumber – Returns the value provided by Amazon SQS.

Definition at line 299 of file ReceiveMessageRequest.h.

AddMessageAttributeNames() [1/3]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::AddMessageAttributeNames ( const Aws::String &  value )

inline

The name of the message attribute, where N is the index.

• The name can contain alphanumeric characters and the underscore (_), hyphen (-), and period (.).

• The name is case-sensitive and must be unique among all attribute names for the message.

• The name must not start with AWS-reserved prefixes such as AWS. or Amazon. (or any casing variants).

• The name must not start or end with a period (.), and it should not have periods in succession (..).

• The name can be up to 256 characters long.

When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All or .* in your request. You can also use all message attributes starting with a prefix, for example bar.*.

Definition at line 426 of file ReceiveMessageRequest.h.

AddMessageAttributeNames() [2/3]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::AddMessageAttributeNames ( Aws::String &&  value )

inline

The name of the message attribute, where N is the index.

• The name can contain alphanumeric characters and the underscore (_), hyphen (-), and period (.).

• The name is case-sensitive and must be unique among all attribute names for the message.

• The name must not start with AWS-reserved prefixes such as AWS. or Amazon. (or any casing variants).

• The name must not start or end with a period (.), and it should not have periods in succession (..).

• The name can be up to 256 characters long.

When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All or .* in your request. You can also use all message attributes starting with a prefix, for example bar.*.

Definition at line 444 of file ReceiveMessageRequest.h.

AddMessageAttributeNames() [3/3]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::AddMessageAttributeNames ( const char *  value )

inline

The name of the message attribute, where N is the index.

• The name can contain alphanumeric characters and the underscore (_), hyphen (-), and period (.).

• The name is case-sensitive and must be unique among all attribute names for the message.

• The name must not start with AWS-reserved prefixes such as AWS. or Amazon. (or any casing variants).

• The name must not start or end with a period (.), and it should not have periods in succession (..).

• The name can be up to 256 characters long.

When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All or .* in your request. You can also use all message attributes starting with a prefix, for example bar.*.

Definition at line 462 of file ReceiveMessageRequest.h.

AttributeNamesHasBeenSet()

bool Aws::SQS::Model::ReceiveMessageRequest::AttributeNamesHasBeenSet ( ) const

inline

A list of attributes that need to be returned along with each message. These attributes include:

• All – Returns all values.

• ApproximateFirstReceiveTimestamp – Returns the time the message was first received from the queue (epoch time in milliseconds).

• ApproximateReceiveCount – Returns the number of times a message has been received across all queues but not deleted.

• AWSTraceHeader – Returns the AWS X-Ray trace header string.

• SenderId

  • For an IAM user, returns the IAM user ID, for example ABCDEFGHI1JKLMNOPQ23R.

  • For an IAM role, returns the IAM role ID, for example ABCDE1F2GH3I4JK5LMNOP:i-a123b456.

• SentTimestamp – Returns the time the message was sent to the queue (epoch time in milliseconds).

• MessageDeduplicationId – Returns the value provided by the producer that calls the SendMessage action.

• MessageGroupId – Returns the value provided by the producer that calls the SendMessage action. Messages with the same MessageGroupId are returned in sequence.

• SequenceNumber – Returns the value provided by Amazon SQS.

Definition at line 143 of file ReceiveMessageRequest.h.

DumpBodyToUrl()

void Aws::SQS::Model::ReceiveMessageRequest::DumpBodyToUrl ( Aws::Http::URI &  uri ) const

overrideprotectedvirtual

Default does nothing. Override this to convert what would otherwise be the payload of the request to a query string format.

Reimplemented from Aws::AmazonWebServiceRequest.

GetAttributeNames()

const Aws::Vector<QueueAttributeName>& Aws::SQS::Model::ReceiveMessageRequest::GetAttributeNames ( ) const

inline

A list of attributes that need to be returned along with each message. These attributes include:

• All – Returns all values.

• ApproximateFirstReceiveTimestamp – Returns the time the message was first received from the queue (epoch time in milliseconds).

• ApproximateReceiveCount – Returns the number of times a message has been received across all queues but not deleted.

• AWSTraceHeader – Returns the AWS X-Ray trace header string.

• SenderId

  • For an IAM user, returns the IAM user ID, for example ABCDEFGHI1JKLMNOPQ23R.

  • For an IAM role, returns the IAM role ID, for example ABCDE1F2GH3I4JK5LMNOP:i-a123b456.

• SentTimestamp – Returns the time the message was sent to the queue (epoch time in milliseconds).

• MessageDeduplicationId – Returns the value provided by the producer that calls the SendMessage action.

• MessageGroupId – Returns the value provided by the producer that calls the SendMessage action. Messages with the same MessageGroupId are returned in sequence.

• SequenceNumber – Returns the value provided by Amazon SQS.

Definition at line 117 of file ReceiveMessageRequest.h.

GetMaxNumberOfMessages()

int Aws::SQS::Model::ReceiveMessageRequest::GetMaxNumberOfMessages ( ) const

inline

The maximum number of messages to return. Amazon SQS never returns more messages than this value (however, fewer messages might be returned). Valid values: 1 to 10. Default: 1.

Definition at line 470 of file ReceiveMessageRequest.h.

GetMessageAttributeNames()

const Aws::Vector<Aws::String>& Aws::SQS::Model::ReceiveMessageRequest::GetMessageAttributeNames ( ) const

inline

The name of the message attribute, where N is the index.

• The name can contain alphanumeric characters and the underscore (_), hyphen (-), and period (.).

• The name is case-sensitive and must be unique among all attribute names for the message.

• The name must not start with AWS-reserved prefixes such as AWS. or Amazon. (or any casing variants).

• The name must not start or end with a period (.), and it should not have periods in succession (..).

• The name can be up to 256 characters long.

When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All or .* in your request. You can also use all message attributes starting with a prefix, for example bar.*.

Definition at line 318 of file ReceiveMessageRequest.h.

GetQueueUrl()

const Aws::String& Aws::SQS::Model::ReceiveMessageRequest::GetQueueUrl ( ) const

inline

The URL of the Amazon SQS queue from which messages are received.

Queue URLs and names are case-sensitive.

Definition at line 48 of file ReceiveMessageRequest.h.

GetReceiveRequestAttemptId()

const Aws::String& Aws::SQS::Model::ReceiveMessageRequest::GetReceiveRequestAttemptId ( ) const

inline

This parameter applies only to FIFO (first-in-first-out) queues.

The token used for deduplication of ReceiveMessage calls. If a networking issue occurs after a ReceiveMessage action, and instead of a response you receive a generic error, it is possible to retry the same action with an identical ReceiveRequestAttemptId to retrieve the same set of messages, even if their visibility timeout has not yet expired.

• You can use ReceiveRequestAttemptId only for 5 minutes after a ReceiveMessage action.

• When you set FifoQueue, a caller of the ReceiveMessage action can provide a ReceiveRequestAttemptId explicitly.

• If a caller of the ReceiveMessage action doesn't provide a ReceiveRequestAttemptId, Amazon SQS generates a ReceiveRequestAttemptId.

• It is possible to retry the ReceiveMessage action with the same ReceiveRequestAttemptId if none of the messages have been modified (deleted or had their visibility changes).

• During a visibility timeout, subsequent calls with the same ReceiveRequestAttemptId return the same messages and receipt handles. If a retry occurs within the deduplication interval, it resets the visibility timeout. For more information, see Visibility Timeout in the Amazon Simple Queue Service Developer Guide.

  If a caller of the ReceiveMessage action still processes messages when the visibility timeout expires and messages become visible, another worker consuming from the same queue can receive the same messages and therefore process duplicates. Also, if a consumer whose message processing time is longer than the visibility timeout tries to delete the processed messages, the action fails with an error.

  To mitigate this effect, ensure that your application observes a safe threshold before the visibility timeout expires and extend the visibility timeout as necessary.

• While messages with a particular MessageGroupId are invisible, no more messages belonging to the same MessageGroupId are returned until the visibility timeout expires. You can still receive messages with another MessageGroupId as long as it is also visible.

• If a caller of ReceiveMessage can't track the ReceiveRequestAttemptId, no retries work until the original visibility timeout expires. As a result, delays might occur but the messages in the queue remain in a strict order.

The maximum length of ReceiveRequestAttemptId is 128 characters. ReceiveRequestAttemptId can contain alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[]^_`{|}~).

For best practices of using ReceiveRequestAttemptId, see Using the ReceiveRequestAttemptId Request Parameter in the Amazon Simple Queue Service Developer Guide.

Definition at line 637 of file ReceiveMessageRequest.h.

GetServiceRequestName()

virtual const char* Aws::SQS::Model::ReceiveMessageRequest::GetServiceRequestName ( ) const

inlineoverridevirtual

Implements Aws::AmazonWebServiceRequest.

Definition at line 35 of file ReceiveMessageRequest.h.

GetVisibilityTimeout()

int Aws::SQS::Model::ReceiveMessageRequest::GetVisibilityTimeout ( ) const

inline

The duration (in seconds) that the received messages are hidden from subsequent retrieve requests after being retrieved by a ReceiveMessage request.

Definition at line 499 of file ReceiveMessageRequest.h.

GetWaitTimeSeconds()

int Aws::SQS::Model::ReceiveMessageRequest::GetWaitTimeSeconds ( ) const

inline

The duration (in seconds) for which the call waits for a message to arrive in the queue before returning. If a message is available, the call returns sooner than WaitTimeSeconds. If no messages are available and the wait time expires, the call returns successfully with an empty list of messages.

To avoid HTTP errors, ensure that the HTTP response timeout for ReceiveMessage requests is longer than the WaitTimeSeconds parameter. For example, with the Java SDK, you can set HTTP transport settings using the NettyNioAsyncHttpClient for asynchronous clients, or the ApacheHttpClient for synchronous clients.

Definition at line 537 of file ReceiveMessageRequest.h.

MaxNumberOfMessagesHasBeenSet()

bool Aws::SQS::Model::ReceiveMessageRequest::MaxNumberOfMessagesHasBeenSet ( ) const

inline

The maximum number of messages to return. Amazon SQS never returns more messages than this value (however, fewer messages might be returned). Valid values: 1 to 10. Default: 1.

Definition at line 477 of file ReceiveMessageRequest.h.

MessageAttributeNamesHasBeenSet()

bool Aws::SQS::Model::ReceiveMessageRequest::MessageAttributeNamesHasBeenSet ( ) const

inline

The name of the message attribute, where N is the index.

• The name can contain alphanumeric characters and the underscore (_), hyphen (-), and period (.).

• The name is case-sensitive and must be unique among all attribute names for the message.

• The name must not start with AWS-reserved prefixes such as AWS. or Amazon. (or any casing variants).

• The name must not start or end with a period (.), and it should not have periods in succession (..).

• The name can be up to 256 characters long.

When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All or .* in your request. You can also use all message attributes starting with a prefix, for example bar.*.

Definition at line 336 of file ReceiveMessageRequest.h.

QueueUrlHasBeenSet()

bool Aws::SQS::Model::ReceiveMessageRequest::QueueUrlHasBeenSet ( ) const

inline

The URL of the Amazon SQS queue from which messages are received.

Queue URLs and names are case-sensitive.

Definition at line 54 of file ReceiveMessageRequest.h.

ReceiveRequestAttemptIdHasBeenSet()

bool Aws::SQS::Model::ReceiveMessageRequest::ReceiveRequestAttemptIdHasBeenSet ( ) const

inline

This parameter applies only to FIFO (first-in-first-out) queues.

The token used for deduplication of ReceiveMessage calls. If a networking issue occurs after a ReceiveMessage action, and instead of a response you receive a generic error, it is possible to retry the same action with an identical ReceiveRequestAttemptId to retrieve the same set of messages, even if their visibility timeout has not yet expired.

• You can use ReceiveRequestAttemptId only for 5 minutes after a ReceiveMessage action.

• When you set FifoQueue, a caller of the ReceiveMessage action can provide a ReceiveRequestAttemptId explicitly.

• If a caller of the ReceiveMessage action doesn't provide a ReceiveRequestAttemptId, Amazon SQS generates a ReceiveRequestAttemptId.

• It is possible to retry the ReceiveMessage action with the same ReceiveRequestAttemptId if none of the messages have been modified (deleted or had their visibility changes).

• During a visibility timeout, subsequent calls with the same ReceiveRequestAttemptId return the same messages and receipt handles. If a retry occurs within the deduplication interval, it resets the visibility timeout. For more information, see Visibility Timeout in the Amazon Simple Queue Service Developer Guide.

  If a caller of the ReceiveMessage action still processes messages when the visibility timeout expires and messages become visible, another worker consuming from the same queue can receive the same messages and therefore process duplicates. Also, if a consumer whose message processing time is longer than the visibility timeout tries to delete the processed messages, the action fails with an error.

  To mitigate this effect, ensure that your application observes a safe threshold before the visibility timeout expires and extend the visibility timeout as necessary.

• While messages with a particular MessageGroupId are invisible, no more messages belonging to the same MessageGroupId are returned until the visibility timeout expires. You can still receive messages with another MessageGroupId as long as it is also visible.

• If a caller of ReceiveMessage can't track the ReceiveRequestAttemptId, no retries work until the original visibility timeout expires. As a result, delays might occur but the messages in the queue remain in a strict order.

The maximum length of ReceiveRequestAttemptId is 128 characters. ReceiveRequestAttemptId can contain alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[]^_`{|}~).

For best practices of using ReceiveRequestAttemptId, see Using the ReceiveRequestAttemptId Request Parameter in the Amazon Simple Queue Service Developer Guide.

Definition at line 688 of file ReceiveMessageRequest.h.

SerializePayload()

Aws::String Aws::SQS::Model::ReceiveMessageRequest::SerializePayload ( ) const

overridevirtual

Convert payload into String.

Implements Aws::AmazonSerializableWebServiceRequest.

SetAttributeNames() [1/2]

void Aws::SQS::Model::ReceiveMessageRequest::SetAttributeNames ( const Aws::Vector< QueueAttributeName > &  value )

inline

A list of attributes that need to be returned along with each message. These attributes include:

• All – Returns all values.

• ApproximateFirstReceiveTimestamp – Returns the time the message was first received from the queue (epoch time in milliseconds).

• ApproximateReceiveCount – Returns the number of times a message has been received across all queues but not deleted.

• AWSTraceHeader – Returns the AWS X-Ray trace header string.

• SenderId

  • For an IAM user, returns the IAM user ID, for example ABCDEFGHI1JKLMNOPQ23R.

  • For an IAM role, returns the IAM role ID, for example ABCDE1F2GH3I4JK5LMNOP:i-a123b456.

• SentTimestamp – Returns the time the message was sent to the queue (epoch time in milliseconds).

• MessageDeduplicationId – Returns the value provided by the producer that calls the SendMessage action.

• MessageGroupId – Returns the value provided by the producer that calls the SendMessage action. Messages with the same MessageGroupId are returned in sequence.

• SequenceNumber – Returns the value provided by Amazon SQS.

Definition at line 169 of file ReceiveMessageRequest.h.

SetAttributeNames() [2/2]

void Aws::SQS::Model::ReceiveMessageRequest::SetAttributeNames ( Aws::Vector< QueueAttributeName > &&  value )

inline

A list of attributes that need to be returned along with each message. These attributes include:

• All – Returns all values.

• ApproximateFirstReceiveTimestamp – Returns the time the message was first received from the queue (epoch time in milliseconds).

• ApproximateReceiveCount – Returns the number of times a message has been received across all queues but not deleted.

• AWSTraceHeader – Returns the AWS X-Ray trace header string.

• SenderId

  • For an IAM user, returns the IAM user ID, for example ABCDEFGHI1JKLMNOPQ23R.

  • For an IAM role, returns the IAM role ID, for example ABCDE1F2GH3I4JK5LMNOP:i-a123b456.

• SentTimestamp – Returns the time the message was sent to the queue (epoch time in milliseconds).

• MessageDeduplicationId – Returns the value provided by the producer that calls the SendMessage action.

• MessageGroupId – Returns the value provided by the producer that calls the SendMessage action. Messages with the same MessageGroupId are returned in sequence.

• SequenceNumber – Returns the value provided by Amazon SQS.

Definition at line 195 of file ReceiveMessageRequest.h.

SetMaxNumberOfMessages()

void Aws::SQS::Model::ReceiveMessageRequest::SetMaxNumberOfMessages ( int  value )

inline

The maximum number of messages to return. Amazon SQS never returns more messages than this value (however, fewer messages might be returned). Valid values: 1 to 10. Default: 1.

Definition at line 484 of file ReceiveMessageRequest.h.

SetMessageAttributeNames() [1/2]

void Aws::SQS::Model::ReceiveMessageRequest::SetMessageAttributeNames ( const Aws::Vector< Aws::String > &  value )

inline

The name of the message attribute, where N is the index.

• The name can contain alphanumeric characters and the underscore (_), hyphen (-), and period (.).

• The name is case-sensitive and must be unique among all attribute names for the message.

• The name must not start with AWS-reserved prefixes such as AWS. or Amazon. (or any casing variants).

• The name must not start or end with a period (.), and it should not have periods in succession (..).

• The name can be up to 256 characters long.

When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All or .* in your request. You can also use all message attributes starting with a prefix, for example bar.*.

Definition at line 354 of file ReceiveMessageRequest.h.

SetMessageAttributeNames() [2/2]

void Aws::SQS::Model::ReceiveMessageRequest::SetMessageAttributeNames ( Aws::Vector< Aws::String > &&  value )

inline

The name of the message attribute, where N is the index.

• The name can contain alphanumeric characters and the underscore (_), hyphen (-), and period (.).

• The name is case-sensitive and must be unique among all attribute names for the message.

• The name must not start with AWS-reserved prefixes such as AWS. or Amazon. (or any casing variants).

• The name must not start or end with a period (.), and it should not have periods in succession (..).

• The name can be up to 256 characters long.

When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All or .* in your request. You can also use all message attributes starting with a prefix, for example bar.*.

Definition at line 372 of file ReceiveMessageRequest.h.

SetQueueUrl() [1/3]

void Aws::SQS::Model::ReceiveMessageRequest::SetQueueUrl ( const Aws::String &  value )

inline

The URL of the Amazon SQS queue from which messages are received.

Queue URLs and names are case-sensitive.

Definition at line 60 of file ReceiveMessageRequest.h.

SetQueueUrl() [2/3]

void Aws::SQS::Model::ReceiveMessageRequest::SetQueueUrl ( Aws::String &&  value )

inline

The URL of the Amazon SQS queue from which messages are received.

Queue URLs and names are case-sensitive.

Definition at line 66 of file ReceiveMessageRequest.h.

SetQueueUrl() [3/3]

void Aws::SQS::Model::ReceiveMessageRequest::SetQueueUrl ( const char *  value )

inline

The URL of the Amazon SQS queue from which messages are received.

Queue URLs and names are case-sensitive.

Definition at line 72 of file ReceiveMessageRequest.h.

SetReceiveRequestAttemptId() [1/3]

void Aws::SQS::Model::ReceiveMessageRequest::SetReceiveRequestAttemptId ( const Aws::String &  value )

inline

This parameter applies only to FIFO (first-in-first-out) queues.

The token used for deduplication of ReceiveMessage calls. If a networking issue occurs after a ReceiveMessage action, and instead of a response you receive a generic error, it is possible to retry the same action with an identical ReceiveRequestAttemptId to retrieve the same set of messages, even if their visibility timeout has not yet expired.

• You can use ReceiveRequestAttemptId only for 5 minutes after a ReceiveMessage action.

• When you set FifoQueue, a caller of the ReceiveMessage action can provide a ReceiveRequestAttemptId explicitly.

• If a caller of the ReceiveMessage action doesn't provide a ReceiveRequestAttemptId, Amazon SQS generates a ReceiveRequestAttemptId.

• It is possible to retry the ReceiveMessage action with the same ReceiveRequestAttemptId if none of the messages have been modified (deleted or had their visibility changes).

• During a visibility timeout, subsequent calls with the same ReceiveRequestAttemptId return the same messages and receipt handles. If a retry occurs within the deduplication interval, it resets the visibility timeout. For more information, see Visibility Timeout in the Amazon Simple Queue Service Developer Guide.

  If a caller of the ReceiveMessage action still processes messages when the visibility timeout expires and messages become visible, another worker consuming from the same queue can receive the same messages and therefore process duplicates. Also, if a consumer whose message processing time is longer than the visibility timeout tries to delete the processed messages, the action fails with an error.

  To mitigate this effect, ensure that your application observes a safe threshold before the visibility timeout expires and extend the visibility timeout as necessary.

• While messages with a particular MessageGroupId are invisible, no more messages belonging to the same MessageGroupId are returned until the visibility timeout expires. You can still receive messages with another MessageGroupId as long as it is also visible.

• If a caller of ReceiveMessage can't track the ReceiveRequestAttemptId, no retries work until the original visibility timeout expires. As a result, delays might occur but the messages in the queue remain in a strict order.

The maximum length of ReceiveRequestAttemptId is 128 characters. ReceiveRequestAttemptId can contain alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[]^_`{|}~).

For best practices of using ReceiveRequestAttemptId, see Using the ReceiveRequestAttemptId Request Parameter in the Amazon Simple Queue Service Developer Guide.

Definition at line 739 of file ReceiveMessageRequest.h.

SetReceiveRequestAttemptId() [2/3]

void Aws::SQS::Model::ReceiveMessageRequest::SetReceiveRequestAttemptId ( Aws::String &&  value )

inline

This parameter applies only to FIFO (first-in-first-out) queues.

The token used for deduplication of ReceiveMessage calls. If a networking issue occurs after a ReceiveMessage action, and instead of a response you receive a generic error, it is possible to retry the same action with an identical ReceiveRequestAttemptId to retrieve the same set of messages, even if their visibility timeout has not yet expired.

• You can use ReceiveRequestAttemptId only for 5 minutes after a ReceiveMessage action.

• When you set FifoQueue, a caller of the ReceiveMessage action can provide a ReceiveRequestAttemptId explicitly.

• If a caller of the ReceiveMessage action doesn't provide a ReceiveRequestAttemptId, Amazon SQS generates a ReceiveRequestAttemptId.

• It is possible to retry the ReceiveMessage action with the same ReceiveRequestAttemptId if none of the messages have been modified (deleted or had their visibility changes).

• During a visibility timeout, subsequent calls with the same ReceiveRequestAttemptId return the same messages and receipt handles. If a retry occurs within the deduplication interval, it resets the visibility timeout. For more information, see Visibility Timeout in the Amazon Simple Queue Service Developer Guide.

  If a caller of the ReceiveMessage action still processes messages when the visibility timeout expires and messages become visible, another worker consuming from the same queue can receive the same messages and therefore process duplicates. Also, if a consumer whose message processing time is longer than the visibility timeout tries to delete the processed messages, the action fails with an error.

  To mitigate this effect, ensure that your application observes a safe threshold before the visibility timeout expires and extend the visibility timeout as necessary.

• While messages with a particular MessageGroupId are invisible, no more messages belonging to the same MessageGroupId are returned until the visibility timeout expires. You can still receive messages with another MessageGroupId as long as it is also visible.

• If a caller of ReceiveMessage can't track the ReceiveRequestAttemptId, no retries work until the original visibility timeout expires. As a result, delays might occur but the messages in the queue remain in a strict order.

The maximum length of ReceiveRequestAttemptId is 128 characters. ReceiveRequestAttemptId can contain alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[]^_`{|}~).

For best practices of using ReceiveRequestAttemptId, see Using the ReceiveRequestAttemptId Request Parameter in the Amazon Simple Queue Service Developer Guide.

Definition at line 790 of file ReceiveMessageRequest.h.

SetReceiveRequestAttemptId() [3/3]

void Aws::SQS::Model::ReceiveMessageRequest::SetReceiveRequestAttemptId ( const char *  value )

inline

This parameter applies only to FIFO (first-in-first-out) queues.

The token used for deduplication of ReceiveMessage calls. If a networking issue occurs after a ReceiveMessage action, and instead of a response you receive a generic error, it is possible to retry the same action with an identical ReceiveRequestAttemptId to retrieve the same set of messages, even if their visibility timeout has not yet expired.

• You can use ReceiveRequestAttemptId only for 5 minutes after a ReceiveMessage action.

• When you set FifoQueue, a caller of the ReceiveMessage action can provide a ReceiveRequestAttemptId explicitly.

• If a caller of the ReceiveMessage action doesn't provide a ReceiveRequestAttemptId, Amazon SQS generates a ReceiveRequestAttemptId.

• It is possible to retry the ReceiveMessage action with the same ReceiveRequestAttemptId if none of the messages have been modified (deleted or had their visibility changes).

• During a visibility timeout, subsequent calls with the same ReceiveRequestAttemptId return the same messages and receipt handles. If a retry occurs within the deduplication interval, it resets the visibility timeout. For more information, see Visibility Timeout in the Amazon Simple Queue Service Developer Guide.

  If a caller of the ReceiveMessage action still processes messages when the visibility timeout expires and messages become visible, another worker consuming from the same queue can receive the same messages and therefore process duplicates. Also, if a consumer whose message processing time is longer than the visibility timeout tries to delete the processed messages, the action fails with an error.

  To mitigate this effect, ensure that your application observes a safe threshold before the visibility timeout expires and extend the visibility timeout as necessary.

• While messages with a particular MessageGroupId are invisible, no more messages belonging to the same MessageGroupId are returned until the visibility timeout expires. You can still receive messages with another MessageGroupId as long as it is also visible.

• If a caller of ReceiveMessage can't track the ReceiveRequestAttemptId, no retries work until the original visibility timeout expires. As a result, delays might occur but the messages in the queue remain in a strict order.

The maximum length of ReceiveRequestAttemptId is 128 characters. ReceiveRequestAttemptId can contain alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[]^_`{|}~).

For best practices of using ReceiveRequestAttemptId, see Using the ReceiveRequestAttemptId Request Parameter in the Amazon Simple Queue Service Developer Guide.

Definition at line 841 of file ReceiveMessageRequest.h.

SetVisibilityTimeout()

void Aws::SQS::Model::ReceiveMessageRequest::SetVisibilityTimeout ( int  value )

inline

The duration (in seconds) that the received messages are hidden from subsequent retrieve requests after being retrieved by a ReceiveMessage request.

Definition at line 513 of file ReceiveMessageRequest.h.

SetWaitTimeSeconds()

void Aws::SQS::Model::ReceiveMessageRequest::SetWaitTimeSeconds ( int  value )

inline

The duration (in seconds) for which the call waits for a message to arrive in the queue before returning. If a message is available, the call returns sooner than WaitTimeSeconds. If no messages are available and the wait time expires, the call returns successfully with an empty list of messages.

To avoid HTTP errors, ensure that the HTTP response timeout for ReceiveMessage requests is longer than the WaitTimeSeconds parameter. For example, with the Java SDK, you can set HTTP transport settings using the NettyNioAsyncHttpClient for asynchronous clients, or the ApacheHttpClient for synchronous clients.

Definition at line 569 of file ReceiveMessageRequest.h.

VisibilityTimeoutHasBeenSet()

bool Aws::SQS::Model::ReceiveMessageRequest::VisibilityTimeoutHasBeenSet ( ) const

inline

The duration (in seconds) that the received messages are hidden from subsequent retrieve requests after being retrieved by a ReceiveMessage request.

Definition at line 506 of file ReceiveMessageRequest.h.

WaitTimeSecondsHasBeenSet()

bool Aws::SQS::Model::ReceiveMessageRequest::WaitTimeSecondsHasBeenSet ( ) const

inline

The duration (in seconds) for which the call waits for a message to arrive in the queue before returning. If a message is available, the call returns sooner than WaitTimeSeconds. If no messages are available and the wait time expires, the call returns successfully with an empty list of messages.

To avoid HTTP errors, ensure that the HTTP response timeout for ReceiveMessage requests is longer than the WaitTimeSeconds parameter. For example, with the Java SDK, you can set HTTP transport settings using the NettyNioAsyncHttpClient for asynchronous clients, or the ApacheHttpClient for synchronous clients.

Definition at line 553 of file ReceiveMessageRequest.h.

WithAttributeNames() [1/2]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithAttributeNames ( const Aws::Vector< QueueAttributeName > &  value )

inline

A list of attributes that need to be returned along with each message. These attributes include:

• All – Returns all values.

• ApproximateFirstReceiveTimestamp – Returns the time the message was first received from the queue (epoch time in milliseconds).

• ApproximateReceiveCount – Returns the number of times a message has been received across all queues but not deleted.

• AWSTraceHeader – Returns the AWS X-Ray trace header string.

• SenderId

  • For an IAM user, returns the IAM user ID, for example ABCDEFGHI1JKLMNOPQ23R.

  • For an IAM role, returns the IAM role ID, for example ABCDE1F2GH3I4JK5LMNOP:i-a123b456.

• SentTimestamp – Returns the time the message was sent to the queue (epoch time in milliseconds).

• MessageDeduplicationId – Returns the value provided by the producer that calls the SendMessage action.

• MessageGroupId – Returns the value provided by the producer that calls the SendMessage action. Messages with the same MessageGroupId are returned in sequence.

• SequenceNumber – Returns the value provided by Amazon SQS.

Definition at line 221 of file ReceiveMessageRequest.h.

WithAttributeNames() [2/2]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithAttributeNames ( Aws::Vector< QueueAttributeName > &&  value )

inline

A list of attributes that need to be returned along with each message. These attributes include:

• All – Returns all values.

• ApproximateFirstReceiveTimestamp – Returns the time the message was first received from the queue (epoch time in milliseconds).

• ApproximateReceiveCount – Returns the number of times a message has been received across all queues but not deleted.

• AWSTraceHeader – Returns the AWS X-Ray trace header string.

• SenderId

  • For an IAM user, returns the IAM user ID, for example ABCDEFGHI1JKLMNOPQ23R.

  • For an IAM role, returns the IAM role ID, for example ABCDE1F2GH3I4JK5LMNOP:i-a123b456.

• SentTimestamp – Returns the time the message was sent to the queue (epoch time in milliseconds).

• MessageDeduplicationId – Returns the value provided by the producer that calls the SendMessage action.

• MessageGroupId – Returns the value provided by the producer that calls the SendMessage action. Messages with the same MessageGroupId are returned in sequence.

• SequenceNumber – Returns the value provided by Amazon SQS.

Definition at line 247 of file ReceiveMessageRequest.h.

WithMaxNumberOfMessages()

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithMaxNumberOfMessages ( int  value )

inline

The maximum number of messages to return. Amazon SQS never returns more messages than this value (however, fewer messages might be returned). Valid values: 1 to 10. Default: 1.

Definition at line 491 of file ReceiveMessageRequest.h.

WithMessageAttributeNames() [1/2]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithMessageAttributeNames ( const Aws::Vector< Aws::String > &  value )

inline

The name of the message attribute, where N is the index.

• The name can contain alphanumeric characters and the underscore (_), hyphen (-), and period (.).

• The name is case-sensitive and must be unique among all attribute names for the message.

• The name must not start with AWS-reserved prefixes such as AWS. or Amazon. (or any casing variants).

• The name must not start or end with a period (.), and it should not have periods in succession (..).

• The name can be up to 256 characters long.

When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All or .* in your request. You can also use all message attributes starting with a prefix, for example bar.*.

Definition at line 390 of file ReceiveMessageRequest.h.

WithMessageAttributeNames() [2/2]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithMessageAttributeNames ( Aws::Vector< Aws::String > &&  value )

inline

The name of the message attribute, where N is the index.

• The name can contain alphanumeric characters and the underscore (_), hyphen (-), and period (.).

• The name is case-sensitive and must be unique among all attribute names for the message.

• The name must not start with AWS-reserved prefixes such as AWS. or Amazon. (or any casing variants).

• The name must not start or end with a period (.), and it should not have periods in succession (..).

• The name can be up to 256 characters long.

When using ReceiveMessage, you can send a list of attribute names to receive, or you can return all of the attributes by specifying All or .* in your request. You can also use all message attributes starting with a prefix, for example bar.*.

Definition at line 408 of file ReceiveMessageRequest.h.

WithQueueUrl() [1/3]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithQueueUrl ( const Aws::String &  value )

inline

The URL of the Amazon SQS queue from which messages are received.

Queue URLs and names are case-sensitive.

Definition at line 78 of file ReceiveMessageRequest.h.

WithQueueUrl() [2/3]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithQueueUrl ( Aws::String &&  value )

inline

The URL of the Amazon SQS queue from which messages are received.

Queue URLs and names are case-sensitive.

Definition at line 84 of file ReceiveMessageRequest.h.

WithQueueUrl() [3/3]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithQueueUrl ( const char *  value )

inline

The URL of the Amazon SQS queue from which messages are received.

Queue URLs and names are case-sensitive.

Definition at line 90 of file ReceiveMessageRequest.h.

WithReceiveRequestAttemptId() [1/3]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithReceiveRequestAttemptId ( const Aws::String &  value )

inline

This parameter applies only to FIFO (first-in-first-out) queues.

The token used for deduplication of ReceiveMessage calls. If a networking issue occurs after a ReceiveMessage action, and instead of a response you receive a generic error, it is possible to retry the same action with an identical ReceiveRequestAttemptId to retrieve the same set of messages, even if their visibility timeout has not yet expired.

• You can use ReceiveRequestAttemptId only for 5 minutes after a ReceiveMessage action.

• When you set FifoQueue, a caller of the ReceiveMessage action can provide a ReceiveRequestAttemptId explicitly.

• If a caller of the ReceiveMessage action doesn't provide a ReceiveRequestAttemptId, Amazon SQS generates a ReceiveRequestAttemptId.

• It is possible to retry the ReceiveMessage action with the same ReceiveRequestAttemptId if none of the messages have been modified (deleted or had their visibility changes).

• During a visibility timeout, subsequent calls with the same ReceiveRequestAttemptId return the same messages and receipt handles. If a retry occurs within the deduplication interval, it resets the visibility timeout. For more information, see Visibility Timeout in the Amazon Simple Queue Service Developer Guide.

  If a caller of the ReceiveMessage action still processes messages when the visibility timeout expires and messages become visible, another worker consuming from the same queue can receive the same messages and therefore process duplicates. Also, if a consumer whose message processing time is longer than the visibility timeout tries to delete the processed messages, the action fails with an error.

  To mitigate this effect, ensure that your application observes a safe threshold before the visibility timeout expires and extend the visibility timeout as necessary.

• While messages with a particular MessageGroupId are invisible, no more messages belonging to the same MessageGroupId are returned until the visibility timeout expires. You can still receive messages with another MessageGroupId as long as it is also visible.

• If a caller of ReceiveMessage can't track the ReceiveRequestAttemptId, no retries work until the original visibility timeout expires. As a result, delays might occur but the messages in the queue remain in a strict order.

The maximum length of ReceiveRequestAttemptId is 128 characters. ReceiveRequestAttemptId can contain alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[]^_`{|}~).

For best practices of using ReceiveRequestAttemptId, see Using the ReceiveRequestAttemptId Request Parameter in the Amazon Simple Queue Service Developer Guide.

Definition at line 892 of file ReceiveMessageRequest.h.

WithReceiveRequestAttemptId() [2/3]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithReceiveRequestAttemptId ( Aws::String &&  value )

inline

This parameter applies only to FIFO (first-in-first-out) queues.

The token used for deduplication of ReceiveMessage calls. If a networking issue occurs after a ReceiveMessage action, and instead of a response you receive a generic error, it is possible to retry the same action with an identical ReceiveRequestAttemptId to retrieve the same set of messages, even if their visibility timeout has not yet expired.

• You can use ReceiveRequestAttemptId only for 5 minutes after a ReceiveMessage action.

• When you set FifoQueue, a caller of the ReceiveMessage action can provide a ReceiveRequestAttemptId explicitly.

• If a caller of the ReceiveMessage action doesn't provide a ReceiveRequestAttemptId, Amazon SQS generates a ReceiveRequestAttemptId.

• It is possible to retry the ReceiveMessage action with the same ReceiveRequestAttemptId if none of the messages have been modified (deleted or had their visibility changes).

• During a visibility timeout, subsequent calls with the same ReceiveRequestAttemptId return the same messages and receipt handles. If a retry occurs within the deduplication interval, it resets the visibility timeout. For more information, see Visibility Timeout in the Amazon Simple Queue Service Developer Guide.

  If a caller of the ReceiveMessage action still processes messages when the visibility timeout expires and messages become visible, another worker consuming from the same queue can receive the same messages and therefore process duplicates. Also, if a consumer whose message processing time is longer than the visibility timeout tries to delete the processed messages, the action fails with an error.

  To mitigate this effect, ensure that your application observes a safe threshold before the visibility timeout expires and extend the visibility timeout as necessary.

• While messages with a particular MessageGroupId are invisible, no more messages belonging to the same MessageGroupId are returned until the visibility timeout expires. You can still receive messages with another MessageGroupId as long as it is also visible.

• If a caller of ReceiveMessage can't track the ReceiveRequestAttemptId, no retries work until the original visibility timeout expires. As a result, delays might occur but the messages in the queue remain in a strict order.

The maximum length of ReceiveRequestAttemptId is 128 characters. ReceiveRequestAttemptId can contain alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[]^_`{|}~).

For best practices of using ReceiveRequestAttemptId, see Using the ReceiveRequestAttemptId Request Parameter in the Amazon Simple Queue Service Developer Guide.

Definition at line 943 of file ReceiveMessageRequest.h.

WithReceiveRequestAttemptId() [3/3]

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithReceiveRequestAttemptId ( const char *  value )

inline

This parameter applies only to FIFO (first-in-first-out) queues.

The token used for deduplication of ReceiveMessage calls. If a networking issue occurs after a ReceiveMessage action, and instead of a response you receive a generic error, it is possible to retry the same action with an identical ReceiveRequestAttemptId to retrieve the same set of messages, even if their visibility timeout has not yet expired.

• You can use ReceiveRequestAttemptId only for 5 minutes after a ReceiveMessage action.

• When you set FifoQueue, a caller of the ReceiveMessage action can provide a ReceiveRequestAttemptId explicitly.

• If a caller of the ReceiveMessage action doesn't provide a ReceiveRequestAttemptId, Amazon SQS generates a ReceiveRequestAttemptId.

• It is possible to retry the ReceiveMessage action with the same ReceiveRequestAttemptId if none of the messages have been modified (deleted or had their visibility changes).

• During a visibility timeout, subsequent calls with the same ReceiveRequestAttemptId return the same messages and receipt handles. If a retry occurs within the deduplication interval, it resets the visibility timeout. For more information, see Visibility Timeout in the Amazon Simple Queue Service Developer Guide.

  If a caller of the ReceiveMessage action still processes messages when the visibility timeout expires and messages become visible, another worker consuming from the same queue can receive the same messages and therefore process duplicates. Also, if a consumer whose message processing time is longer than the visibility timeout tries to delete the processed messages, the action fails with an error.

  To mitigate this effect, ensure that your application observes a safe threshold before the visibility timeout expires and extend the visibility timeout as necessary.

• While messages with a particular MessageGroupId are invisible, no more messages belonging to the same MessageGroupId are returned until the visibility timeout expires. You can still receive messages with another MessageGroupId as long as it is also visible.

• If a caller of ReceiveMessage can't track the ReceiveRequestAttemptId, no retries work until the original visibility timeout expires. As a result, delays might occur but the messages in the queue remain in a strict order.

The maximum length of ReceiveRequestAttemptId is 128 characters. ReceiveRequestAttemptId can contain alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[]^_`{|}~).

For best practices of using ReceiveRequestAttemptId, see Using the ReceiveRequestAttemptId Request Parameter in the Amazon Simple Queue Service Developer Guide.

Definition at line 994 of file ReceiveMessageRequest.h.

WithVisibilityTimeout()

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithVisibilityTimeout ( int  value )

inline

The duration (in seconds) that the received messages are hidden from subsequent retrieve requests after being retrieved by a ReceiveMessage request.

Definition at line 520 of file ReceiveMessageRequest.h.

WithWaitTimeSeconds()

ReceiveMessageRequest& Aws::SQS::Model::ReceiveMessageRequest::WithWaitTimeSeconds ( int  value )

inline

The duration (in seconds) for which the call waits for a message to arrive in the queue before returning. If a message is available, the call returns sooner than WaitTimeSeconds. If no messages are available and the wait time expires, the call returns successfully with an empty list of messages.

To avoid HTTP errors, ensure that the HTTP response timeout for ReceiveMessage requests is longer than the WaitTimeSeconds parameter. For example, with the Java SDK, you can set HTTP transport settings using the NettyNioAsyncHttpClient for asynchronous clients, or the ApacheHttpClient for synchronous clients.

Definition at line 585 of file ReceiveMessageRequest.h.

---

The documentation for this class was generated from the following file:

• aws-cpp-sdk-sqs/include/aws/sqs/model/ReceiveMessageRequest.h