public class AmazonSQSClient extends AmazonWebServiceClient implements AmazonSQS
Amazon Simple Queue Service
Welcome to the Amazon Simple Queue Service API Reference . This section describes who should read this guide, how the guide is organized, and other resources related to the Amazon Simple Queue Service (Amazon SQS).
Amazon SQS offers reliable and scalable hosted queues for storing messages as they travel between computers. By using Amazon SQS, you can move data between distributed components of your applications that perform different tasks without losing messages or requiring each component to be always available.
Helpful Links:
We also provide SDKs that enable you to access Amazon SQS from your preferred programming language. The SDKs contain functionality that automatically takes care of tasks such as:
For a list of available SDKs, go to Tools for Amazon Web Services .
| Modifier and Type | Field and Description |
|---|---|
protected List<com.amazonaws.transform.Unmarshaller<AmazonServiceException,Node>> |
exceptionUnmarshallers
List of exception unmarshallers for all AmazonSQS exceptions.
|
client, clientConfiguration, endpoint, LOGGING_AWS_REQUEST_METRIC, requestHandler2s, timeOffset| Constructor and Description |
|---|
AmazonSQSClient()
Constructs a new client to invoke service methods on
AmazonSQS.
|
AmazonSQSClient(AWSCredentials awsCredentials)
Constructs a new client to invoke service methods on
AmazonSQS using the specified AWS account credentials.
|
AmazonSQSClient(AWSCredentials awsCredentials,
ClientConfiguration clientConfiguration)
Constructs a new client to invoke service methods on
AmazonSQS using the specified AWS account credentials
and client configuration options.
|
AmazonSQSClient(AWSCredentialsProvider awsCredentialsProvider)
Constructs a new client to invoke service methods on
AmazonSQS using the specified AWS account credentials provider.
|
AmazonSQSClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration)
Constructs a new client to invoke service methods on
AmazonSQS using the specified AWS account credentials
provider and client configuration options.
|
AmazonSQSClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration,
RequestMetricCollector requestMetricCollector)
Constructs a new client to invoke service methods on
AmazonSQS using the specified AWS account credentials
provider, client configuration options, and request metric collector.
|
AmazonSQSClient(ClientConfiguration clientConfiguration)
Constructs a new client to invoke service methods on
AmazonSQS.
|
| Modifier and Type | Method and Description |
|---|---|
void |
addPermission(AddPermissionRequest addPermissionRequest)
Adds a permission to a queue for a specific
principal
.
|
void |
addPermission(String queueUrl,
String label,
List<String> aWSAccountIds,
List<String> actions)
Adds a permission to a queue for a specific
principal
.
|
void |
changeMessageVisibility(ChangeMessageVisibilityRequest changeMessageVisibilityRequest)
Changes the visibility timeout of a specified message in a queue to a
new value.
|
void |
changeMessageVisibility(String queueUrl,
String receiptHandle,
Integer visibilityTimeout)
Changes the visibility timeout of a specified message in a queue to a
new value.
|
ChangeMessageVisibilityBatchResult |
changeMessageVisibilityBatch(ChangeMessageVisibilityBatchRequest changeMessageVisibilityBatchRequest)
Changes the visibility timeout of multiple messages.
|
ChangeMessageVisibilityBatchResult |
changeMessageVisibilityBatch(String queueUrl,
List<ChangeMessageVisibilityBatchRequestEntry> entries)
Changes the visibility timeout of multiple messages.
|
CreateQueueResult |
createQueue(CreateQueueRequest createQueueRequest)
Creates a new queue, or returns the URL of an existing one.
|
CreateQueueResult |
createQueue(String queueName)
Creates a new queue, or returns the URL of an existing one.
|
void |
deleteMessage(DeleteMessageRequest deleteMessageRequest)
Deletes the specified message from the specified queue.
|
void |
deleteMessage(String queueUrl,
String receiptHandle)
Deletes the specified message from the specified queue.
|
DeleteMessageBatchResult |
deleteMessageBatch(DeleteMessageBatchRequest deleteMessageBatchRequest)
Deletes up to ten messages from the specified queue.
|
DeleteMessageBatchResult |
deleteMessageBatch(String queueUrl,
List<DeleteMessageBatchRequestEntry> entries)
Deletes up to ten messages from the specified queue.
|
void |
deleteQueue(DeleteQueueRequest deleteQueueRequest)
Deletes the queue specified by the queue URL , regardless of
whether the queue is empty.
|
void |
deleteQueue(String queueUrl)
Deletes the queue specified by the queue URL , regardless of
whether the queue is empty.
|
ResponseMetadata |
getCachedResponseMetadata(AmazonWebServiceRequest request)
Returns additional metadata for a previously executed successful, request, typically used for
debugging issues where a service isn't acting as expected.
|
GetQueueAttributesResult |
getQueueAttributes(GetQueueAttributesRequest getQueueAttributesRequest)
Gets attributes for the specified queue.
|
GetQueueAttributesResult |
getQueueAttributes(String queueUrl,
List<String> attributeNames)
Gets attributes for the specified queue.
|
GetQueueUrlResult |
getQueueUrl(GetQueueUrlRequest getQueueUrlRequest)
Returns the URL of an existing queue.
|
GetQueueUrlResult |
getQueueUrl(String queueName)
Returns the URL of an existing queue.
|
ListDeadLetterSourceQueuesResult |
listDeadLetterSourceQueues(ListDeadLetterSourceQueuesRequest listDeadLetterSourceQueuesRequest)
Returns a list of your queues that have the RedrivePolicy queue
attribute configured with a dead letter queue.
|
ListQueuesResult |
listQueues()
Returns a list of your queues.
|
ListQueuesResult |
listQueues(ListQueuesRequest listQueuesRequest)
Returns a list of your queues.
|
ListQueuesResult |
listQueues(String queueNamePrefix)
Returns a list of your queues.
|
void |
purgeQueue(PurgeQueueRequest purgeQueueRequest)
Deletes the messages in a queue specified by the queue URL .
|
ReceiveMessageResult |
receiveMessage(ReceiveMessageRequest receiveMessageRequest)
Retrieves one or more messages, with a maximum limit of 10 messages,
from the specified queue.
|
ReceiveMessageResult |
receiveMessage(String queueUrl)
Retrieves one or more messages, with a maximum limit of 10 messages,
from the specified queue.
|
void |
removePermission(RemovePermissionRequest removePermissionRequest)
Revokes any permissions in the queue policy that matches the
specified
Label parameter. |
void |
removePermission(String queueUrl,
String label)
Revokes any permissions in the queue policy that matches the
specified
Label parameter. |
SendMessageResult |
sendMessage(SendMessageRequest sendMessageRequest)
Delivers a message to the specified queue.
|
SendMessageResult |
sendMessage(String queueUrl,
String messageBody)
Delivers a message to the specified queue.
|
SendMessageBatchResult |
sendMessageBatch(SendMessageBatchRequest sendMessageBatchRequest)
Delivers up to ten messages to the specified queue.
|
SendMessageBatchResult |
sendMessageBatch(String queueUrl,
List<SendMessageBatchRequestEntry> entries)
Delivers up to ten messages to the specified queue.
|
void |
setQueueAttributes(SetQueueAttributesRequest setQueueAttributesRequest)
Sets the value of one or more queue attributes.
|
void |
setQueueAttributes(String queueUrl,
Map<String,String> attributes)
Sets the value of one or more queue attributes.
|
addRequestHandler, addRequestHandler, beforeMarshalling, configSigner, configSigner, configureRegion, createExecutionContext, createExecutionContext, createExecutionContext, endClientExecution, endClientExecution, findRequestMetricCollector, getRequestMetricsCollector, getServiceAbbreviation, getServiceName, getServiceNameIntern, getSigner, getSignerByURI, getSignerRegionOverride, getTimeOffset, isProfilingEnabled, isRequestMetricsEnabled, removeRequestHandler, removeRequestHandler, requestMetricCollector, setEndpoint, setEndpoint, setEndpointPrefix, setRegion, setServiceNameIntern, setSignerRegionOverride, setTimeOffset, shutdown, withEndpoint, withRegion, withRegion, withTimeOffsetclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitsetEndpoint, setRegion, shutdownprotected final List<com.amazonaws.transform.Unmarshaller<AmazonServiceException,Node>> exceptionUnmarshallers
public AmazonSQSClient()
All service calls made using this new client object are blocking, and will not return until the service call completes.
DefaultAWSCredentialsProviderChainpublic AmazonSQSClient(ClientConfiguration clientConfiguration)
All service calls made using this new client object are blocking, and will not return until the service call completes.
clientConfiguration - The client configuration options controlling how this
client connects to AmazonSQS
(ex: proxy settings, retry counts, etc.).DefaultAWSCredentialsProviderChainpublic AmazonSQSClient(AWSCredentials awsCredentials)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentials - The AWS credentials (access key ID and secret key) to use
when authenticating with AWS services.public AmazonSQSClient(AWSCredentials awsCredentials, ClientConfiguration clientConfiguration)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentials - The AWS credentials (access key ID and secret key) to use
when authenticating with AWS services.clientConfiguration - The client configuration options controlling how this
client connects to AmazonSQS
(ex: proxy settings, retry counts, etc.).public AmazonSQSClient(AWSCredentialsProvider awsCredentialsProvider)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentialsProvider - The AWS credentials provider which will provide credentials
to authenticate requests with AWS services.public AmazonSQSClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentialsProvider - The AWS credentials provider which will provide credentials
to authenticate requests with AWS services.clientConfiguration - The client configuration options controlling how this
client connects to AmazonSQS
(ex: proxy settings, retry counts, etc.).public AmazonSQSClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration, RequestMetricCollector requestMetricCollector)
All service calls made using this new client object are blocking, and will not return until the service call completes.
awsCredentialsProvider - The AWS credentials provider which will provide credentials
to authenticate requests with AWS services.clientConfiguration - The client configuration options controlling how this
client connects to AmazonSQS
(ex: proxy settings, retry counts, etc.).requestMetricCollector - optional request metric collectorpublic void setQueueAttributes(SetQueueAttributesRequest setQueueAttributesRequest)
Sets the value of one or more queue attributes. When you change a
queue's attributes, the change can take up to 60 seconds for most of
the attributes to propagate throughout the SQS system. Changes made to
the MessageRetentionPeriod attribute can take up to 15
minutes.
NOTE:Going forward, new attributes might be added. If you are writing code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.
setQueueAttributes in interface AmazonSQSsetQueueAttributesRequest - Container for the necessary
parameters to execute the SetQueueAttributes service method on
AmazonSQS.InvalidAttributeNameExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public ChangeMessageVisibilityBatchResult changeMessageVisibilityBatch(ChangeMessageVisibilityBatchRequest changeMessageVisibilityBatchRequest)
Changes the visibility timeout of multiple messages. This is a batch
version of ChangeMessageVisibility. The result of the action on each
message is reported individually in the response. You can send up to
10 ChangeMessageVisibility requests with each
ChangeMessageVisibilityBatch action.
IMPORTANT:Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of 200.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
changeMessageVisibilityBatch in interface AmazonSQSchangeMessageVisibilityBatchRequest - Container for the necessary
parameters to execute the ChangeMessageVisibilityBatch service method
on AmazonSQS.BatchEntryIdsNotDistinctExceptionTooManyEntriesInBatchRequestExceptionInvalidBatchEntryIdExceptionEmptyBatchRequestExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void changeMessageVisibility(ChangeMessageVisibilityRequest changeMessageVisibilityRequest)
Changes the visibility timeout of a specified message in a queue to a new value. The maximum allowed timeout value you can set the value to is 12 hours. This means you can't extend the timeout of a message in an existing queue to more than a total visibility timeout of 12 hours. (For more information visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide .)
For example, let's say you have a message and its default message
visibility timeout is 30 minutes. You could call
ChangeMessageVisiblity with a value of two hours and the
effective timeout would be two hours and 30 minutes. When that time
comes near you could again extend the time out by calling
ChangeMessageVisiblity, but this time the maximum allowed timeout
would be 9 hours and 30 minutes.
NOTE: There is a 120,000 limit for the number of inflight messages per queue. Messages are inflight after they have been received from the queue by a consuming component, but have not yet been deleted from the queue. If you reach the 120,000 limit, you will receive an OverLimit error message from Amazon SQS. To help avoid reaching the limit, you should delete the messages from the queue after they have been processed. You can also increase the number of queues you use to process the messages.
IMPORTANT:If you attempt to set the VisibilityTimeout to an amount more than the maximum time left, Amazon SQS returns an error. It will not automatically recalculate and increase the timeout to the maximum time remaining.
IMPORTANT:Unlike with a queue, when you change the visibility timeout for a specific message, that timeout value is applied immediately but is not saved in memory for that message. If you don't delete a message after it is received, the visibility timeout for the message the next time it is received reverts to the original timeout value, not the value you set with the ChangeMessageVisibility action.
changeMessageVisibility in interface AmazonSQSchangeMessageVisibilityRequest - Container for the necessary
parameters to execute the ChangeMessageVisibility service method on
AmazonSQS.ReceiptHandleIsInvalidExceptionMessageNotInflightExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public GetQueueUrlResult getQueueUrl(GetQueueUrlRequest getQueueUrlRequest)
Returns the URL of an existing queue. This action provides a simple way to retrieve the URL of an Amazon SQS queue.
To access a queue that belongs to another AWS account, use the
QueueOwnerAWSAccountId parameter to specify the account
ID of the queue's owner. The queue's owner must grant you permission
to access the queue. For more information about shared queue access,
see AddPermission or go to
Shared Queues
in the Amazon SQS Developer Guide .
getQueueUrl in interface AmazonSQSgetQueueUrlRequest - Container for the necessary parameters to
execute the GetQueueUrl service method on AmazonSQS.QueueDoesNotExistExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void removePermission(RemovePermissionRequest removePermissionRequest)
Revokes any permissions in the queue policy that matches the
specified Label parameter. Only the owner of the queue
can remove permissions.
removePermission in interface AmazonSQSremovePermissionRequest - Container for the necessary parameters
to execute the RemovePermission service method on AmazonSQS.AmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public GetQueueAttributesResult getQueueAttributes(GetQueueAttributesRequest getQueueAttributesRequest)
Gets attributes for the specified queue. The following attributes are supported:
All - returns all values.ApproximateNumberOfMessages - returns the
approximate number of visible messages in a queue. For more
information, see
Resources Required to Process Messages
in the Amazon SQS Developer Guide .ApproximateNumberOfMessagesNotVisible - returns the
approximate number of messages that are not timed-out and not deleted.
For more information, see
Resources Required to Process Messages
in the Amazon SQS Developer Guide .VisibilityTimeout - returns the visibility timeout
for the queue. For more information about visibility timeout, see
Visibility Timeout
in the Amazon SQS Developer Guide .CreatedTimestamp - returns the time when the queue
was created (epoch time in seconds).LastModifiedTimestamp - returns the time when the
queue was last changed (epoch time in seconds).Policy - returns the queue's policy.MaximumMessageSize - returns the limit of how many
bytes a message can contain before Amazon SQS rejects it.MessageRetentionPeriod - returns the number of
seconds Amazon SQS retains a message.QueueArn - returns the queue's Amazon resource name
(ARN).ApproximateNumberOfMessagesDelayed - returns the
approximate number of messages that are pending to be added to the
queue.DelaySeconds - returns the default delay on the
queue in seconds.ReceiveMessageWaitTimeSeconds - returns the time
for which a ReceiveMessage call will wait for a message to
arrive.RedrivePolicy - returns the parameters for dead
letter queue functionality of the source queue. For more information
about RedrivePolicy and dead letter queues, see
Using Amazon SQS Dead Letter Queues
in the Amazon SQS Developer Guide .NOTE:Going forward, new attributes might be added. If you are writing code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
getQueueAttributes in interface AmazonSQSgetQueueAttributesRequest - Container for the necessary
parameters to execute the GetQueueAttributes service method on
AmazonSQS.InvalidAttributeNameExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public SendMessageBatchResult sendMessageBatch(SendMessageBatchRequest sendMessageBatchRequest)
Delivers up to ten messages to the specified queue. This is a batch version of SendMessage. The result of the send action on each message is reported individually in the response. The maximum allowed individual message size is 256 KB (262,144 bytes).
The maximum total payload size (i.e., the sum of all a batch's individual message lengths) is also 256 KB (262,144 bytes).
If the DelaySeconds parameter is not specified for an
entry, the default for the queue is used.
IMPORTANT:The following list shows the characters (in Unicode) that are allowed in your message, according to the W3C XML specification. For more information, go to http://www.faqs.org/rfcs/rfc1321.html. If you send any characters that are not included in the list, your request will be rejected. #x9 | #xA | #xD | [#x20 to #xD7FF] | [#xE000 to #xFFFD] | [#x10000 to #x10FFFF]
IMPORTANT: Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of 200.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
sendMessageBatch in interface AmazonSQSsendMessageBatchRequest - Container for the necessary parameters
to execute the SendMessageBatch service method on AmazonSQS.BatchEntryIdsNotDistinctExceptionTooManyEntriesInBatchRequestExceptionBatchRequestTooLongExceptionUnsupportedOperationExceptionInvalidBatchEntryIdExceptionEmptyBatchRequestExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void purgeQueue(PurgeQueueRequest purgeQueueRequest)
Deletes the messages in a queue specified by the queue URL .
IMPORTANT:When you use the PurgeQueue API, the deleted messages in the queue cannot be retrieved.
When you purge a queue, the message deletion process takes up to 60
seconds. All messages sent to the queue before calling
PurgeQueue will be deleted; messages sent to the queue
while it is being purged may be deleted. While the queue is being
purged, messages sent to the queue before PurgeQueue was
called may be received, but will be deleted within the next minute.
purgeQueue in interface AmazonSQSpurgeQueueRequest - Container for the necessary parameters to
execute the PurgeQueue service method on AmazonSQS.PurgeQueueInProgressExceptionQueueDoesNotExistExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public ListDeadLetterSourceQueuesResult listDeadLetterSourceQueues(ListDeadLetterSourceQueuesRequest listDeadLetterSourceQueuesRequest)
Returns a list of your queues that have the RedrivePolicy queue attribute configured with a dead letter queue.
For more information about using dead letter queues, see Using Amazon SQS Dead Letter Queues .
listDeadLetterSourceQueues in interface AmazonSQSlistDeadLetterSourceQueuesRequest - Container for the necessary
parameters to execute the ListDeadLetterSourceQueues service method on
AmazonSQS.QueueDoesNotExistExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void deleteQueue(DeleteQueueRequest deleteQueueRequest)
Deletes the queue specified by the queue URL , regardless of whether the queue is empty. If the specified queue does not exist, Amazon SQS returns a successful response.
IMPORTANT: Use DeleteQueue with care; once you delete your queue, any messages in the queue are no longer available.
When you delete a queue, the deletion process takes up to 60 seconds. Requests you send involving that queue during the 60 seconds might succeed. For example, a SendMessage request might succeed, but after the 60 seconds, the queue and that message you sent no longer exist. Also, when you delete a queue, you must wait at least 60 seconds before creating a queue with the same name.
We reserve the right to delete queues that have had no activity for more than 30 days. For more information, see How Amazon SQS Queues Work in the Amazon SQS Developer Guide .
deleteQueue in interface AmazonSQSdeleteQueueRequest - Container for the necessary parameters to
execute the DeleteQueue service method on AmazonSQS.AmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public SendMessageResult sendMessage(SendMessageRequest sendMessageRequest)
Delivers a message to the specified queue. With Amazon SQS, you now have the ability to send large payload messages that are up to 256KB (262,144 bytes) in size. To send large payloads, you must use an AWS SDK that supports SigV4 signing. To verify whether SigV4 is supported for an AWS SDK, check the SDK release notes.
IMPORTANT: The following list shows the characters (in Unicode) allowed in your message, according to the W3C XML specification. For more information, go to http://www.w3.org/TR/REC-xml/#charsets If you send any characters not included in the list, your request will be rejected. #x9 | #xA | #xD | [#x20 to #xD7FF] | [#xE000 to #xFFFD] | [#x10000 to #x10FFFF]
sendMessage in interface AmazonSQSsendMessageRequest - Container for the necessary parameters to
execute the SendMessage service method on AmazonSQS.InvalidMessageContentsExceptionUnsupportedOperationExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public ReceiveMessageResult receiveMessage(ReceiveMessageRequest receiveMessageRequest)
Retrieves one or more messages, with a maximum limit of 10 messages,
from the specified queue. Long poll support is enabled by using the
WaitTimeSeconds parameter. For more information, see
Amazon SQS Long Poll
in the Amazon SQS Developer Guide .
Short poll is the default behavior where a weighted random set of
machines is sampled on a ReceiveMessage call. This means
only the messages on the sampled machines are returned. If the number
of messages in the queue is small (less than 1000), it is likely you
will get fewer messages than you requested per
ReceiveMessage call. If the number of messages in the
queue is extremely small, you might not receive any messages in a
particular ReceiveMessage response; in which case you
should repeat the request.
For each message returned, the response includes the following:
Message body
MD5 digest of the message body. For information about MD5, go to http://www.faqs.org/rfcs/rfc1321.html .
Message ID you received when you sent the message to the queue.
Receipt handle.
Message attributes.
MD5 digest of the message attributes.
The receipt handle is the identifier you must provide when deleting the message. For more information, see Queue and Message Identifiers in the Amazon SQS Developer Guide .
You can provide the VisibilityTimeout parameter in your
request, which will be applied to the messages that Amazon SQS returns
in the response. If you do not include the parameter, the overall
visibility timeout for the queue is used for the returned messages.
For more information, see
Visibility Timeout
in the Amazon SQS Developer Guide .
NOTE: Going forward, new attributes might be added. If you are writing code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.
receiveMessage in interface AmazonSQSreceiveMessageRequest - Container for the necessary parameters to
execute the ReceiveMessage service method on AmazonSQS.OverLimitExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public ListQueuesResult listQueues(ListQueuesRequest listQueuesRequest)
Returns a list of your queues. The maximum number of queues that can
be returned is 1000. If you specify a value for the optional
QueueNamePrefix parameter, only queues with a name
beginning with the specified value are returned.
listQueues in interface AmazonSQSlistQueuesRequest - Container for the necessary parameters to
execute the ListQueues service method on AmazonSQS.AmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public DeleteMessageBatchResult deleteMessageBatch(DeleteMessageBatchRequest deleteMessageBatchRequest)
Deletes up to ten messages from the specified queue. This is a batch version of DeleteMessage. The result of the delete action on each message is reported individually in the response.
IMPORTANT: Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of 200.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
deleteMessageBatch in interface AmazonSQSdeleteMessageBatchRequest - Container for the necessary
parameters to execute the DeleteMessageBatch service method on
AmazonSQS.BatchEntryIdsNotDistinctExceptionTooManyEntriesInBatchRequestExceptionInvalidBatchEntryIdExceptionEmptyBatchRequestExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public CreateQueueResult createQueue(CreateQueueRequest createQueueRequest)
Creates a new queue, or returns the URL of an existing one. When you
request CreateQueue , you provide a name for the queue.
To successfully create a new queue, you must provide a name that is
unique within the scope of your own queues.
NOTE: If you delete a queue, you must wait at least 60 seconds before creating a queue with the same name.
You may pass one or more attributes in the request. If you do not provide a value for any attribute, the queue will have the default value for that attribute. Permitted attributes are the same that can be set using SetQueueAttributes.
NOTE: Use GetQueueUrl to get a queue's URL. GetQueueUrl requires only the QueueName parameter.
If you provide the name of an existing queue, along with the exact
names and values of all the queue's attributes,
CreateQueue returns the queue URL for the existing queue.
If the queue name, attribute names, or attribute values do not match
an existing queue, CreateQueue returns an error.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
createQueue in interface AmazonSQScreateQueueRequest - Container for the necessary parameters to
execute the CreateQueue service method on AmazonSQS.QueueNameExistsExceptionQueueDeletedRecentlyExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void addPermission(AddPermissionRequest addPermissionRequest)
Adds a permission to a queue for a specific principal . This allows for sharing access to the queue.
When you create a queue, you have full control access rights for the queue. Only you (as owner of the queue) can grant or deny permissions to the queue. For more information about these permissions, see Shared Queues in the Amazon SQS Developer Guide .
NOTE: AddPermission writes an Amazon SQS-generated policy. If you want to write your own policy, use SetQueueAttributes to upload your policy. For more information about writing your own policy, see Using The Access Policy Language in the Amazon SQS Developer Guide.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
addPermission in interface AmazonSQSaddPermissionRequest - Container for the necessary parameters to
execute the AddPermission service method on AmazonSQS.OverLimitExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void deleteMessage(DeleteMessageRequest deleteMessageRequest)
Deletes the specified message from the specified queue. You specify
the message by using the message's receipt handle and not
the message ID you received when you sent the message.
Even if the message is locked by another reader due to the visibility
timeout setting, it is still deleted from the queue. If you leave a
message in the queue for longer than the queue's configured retention
period, Amazon SQS automatically deletes it.
NOTE: The receipt handle is associated with a specific instance of receiving the message. If you receive a message more than once, the receipt handle you get each time you receive the message is different. When you request DeleteMessage, if you don't provide the most recently received receipt handle for the message, the request will still succeed, but the message might not be deleted.
IMPORTANT: It is possible you will receive a message even after you have deleted it. This might happen on rare occasions if one of the servers storing a copy of the message is unavailable when you request to delete the message. The copy remains on the server and might be returned to you again on a subsequent receive request. You should create your system to be idempotent so that receiving a particular message more than once is not a problem.
deleteMessage in interface AmazonSQSdeleteMessageRequest - Container for the necessary parameters to
execute the DeleteMessage service method on AmazonSQS.ReceiptHandleIsInvalidExceptionInvalidIdFormatExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public ListQueuesResult listQueues() throws AmazonServiceException, AmazonClientException
Returns a list of your queues. The maximum number of queues that can
be returned is 1000. If you specify a value for the optional
QueueNamePrefix parameter, only queues with a name
beginning with the specified value are returned.
listQueues in interface AmazonSQSAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void setQueueAttributes(String queueUrl, Map<String,String> attributes)
Sets the value of one or more queue attributes. When you change a
queue's attributes, the change can take up to 60 seconds for most of
the attributes to propagate throughout the SQS system. Changes made to
the MessageRetentionPeriod attribute can take up to 15
minutes.
NOTE:Going forward, new attributes might be added. If you are writing code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.
setQueueAttributes in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.attributes - A map of attributes to set. The following lists
the names, descriptions, and values of the special request parameters
the SetQueueAttributes action uses:
DelaySeconds - The time in seconds that the delivery
of all messages in the queue will be delayed. An integer from 0 to 900
(15 minutes). The default for this attribute is 0 (zero).MaximumMessageSize - The limit of how many bytes a
message can contain before Amazon SQS rejects it. An integer from 1024
bytes (1 KiB) up to 262144 bytes (256 KiB). The default for this
attribute is 262144 (256 KiB).MessageRetentionPeriod - The number of seconds Amazon
SQS retains a message. Integer representing seconds, from 60 (1
minute) to 1209600 (14 days). The default for this attribute is 345600
(4 days).Policy - The queue's policy. A valid
AWS policy. For more information about policy structure, see Overview
of AWS IAM Policies in the Amazon IAM User Guide.ReceiveMessageWaitTimeSeconds - The time for which a
ReceiveMessage call will wait for a message to arrive. An integer from
0 to 20 (seconds). The default for this attribute is 0. VisibilityTimeout - The visibility timeout for the
queue. An integer from 0 to 43200 (12 hours). The default for this
attribute is 30. For more information about visibility timeout, see
Visibility Timeout in the Amazon SQS Developer Guide.RedrivePolicy - The parameters for dead letter queue
functionality of the source queue. For more information about
RedrivePolicy and dead letter queues, see Using Amazon SQS Dead Letter
Queues in the Amazon SQS Developer Guide.InvalidAttributeNameExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public ChangeMessageVisibilityBatchResult changeMessageVisibilityBatch(String queueUrl, List<ChangeMessageVisibilityBatchRequestEntry> entries)
Changes the visibility timeout of multiple messages. This is a batch
version of ChangeMessageVisibility. The result of the action on each
message is reported individually in the response. You can send up to
10 ChangeMessageVisibility requests with each
ChangeMessageVisibilityBatch action.
IMPORTANT:Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of 200.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
changeMessageVisibilityBatch in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.entries - A list of receipt handles of the messages for which the
visibility timeout must be changed.BatchEntryIdsNotDistinctExceptionTooManyEntriesInBatchRequestExceptionInvalidBatchEntryIdExceptionEmptyBatchRequestExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void changeMessageVisibility(String queueUrl, String receiptHandle, Integer visibilityTimeout)
Changes the visibility timeout of a specified message in a queue to a new value. The maximum allowed timeout value you can set the value to is 12 hours. This means you can't extend the timeout of a message in an existing queue to more than a total visibility timeout of 12 hours. (For more information visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide .)
For example, let's say you have a message and its default message
visibility timeout is 30 minutes. You could call
ChangeMessageVisiblity with a value of two hours and the
effective timeout would be two hours and 30 minutes. When that time
comes near you could again extend the time out by calling
ChangeMessageVisiblity, but this time the maximum allowed timeout
would be 9 hours and 30 minutes.
NOTE: There is a 120,000 limit for the number of inflight messages per queue. Messages are inflight after they have been received from the queue by a consuming component, but have not yet been deleted from the queue. If you reach the 120,000 limit, you will receive an OverLimit error message from Amazon SQS. To help avoid reaching the limit, you should delete the messages from the queue after they have been processed. You can also increase the number of queues you use to process the messages.
IMPORTANT:If you attempt to set the VisibilityTimeout to an amount more than the maximum time left, Amazon SQS returns an error. It will not automatically recalculate and increase the timeout to the maximum time remaining.
IMPORTANT:Unlike with a queue, when you change the visibility timeout for a specific message, that timeout value is applied immediately but is not saved in memory for that message. If you don't delete a message after it is received, the visibility timeout for the message the next time it is received reverts to the original timeout value, not the value you set with the ChangeMessageVisibility action.
changeMessageVisibility in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.receiptHandle - The receipt handle associated with the message
whose visibility timeout should be changed. This parameter is returned
by the ReceiveMessage action.visibilityTimeout - The new value (in seconds - from 0 to 43200 -
maximum 12 hours) for the message's visibility timeout.ReceiptHandleIsInvalidExceptionMessageNotInflightExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public GetQueueUrlResult getQueueUrl(String queueName)
Returns the URL of an existing queue. This action provides a simple way to retrieve the URL of an Amazon SQS queue.
To access a queue that belongs to another AWS account, use the
QueueOwnerAWSAccountId parameter to specify the account
ID of the queue's owner. The queue's owner must grant you permission
to access the queue. For more information about shared queue access,
see AddPermission or go to
Shared Queues
in the Amazon SQS Developer Guide .
getQueueUrl in interface AmazonSQSqueueName - The name of the queue whose URL must be fetched.
Maximum 80 characters; alphanumeric characters, hyphens (-), and
underscores (_) are allowed.QueueDoesNotExistExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void removePermission(String queueUrl, String label)
Revokes any permissions in the queue policy that matches the
specified Label parameter. Only the owner of the queue
can remove permissions.
removePermission in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.label - The identification of the permission to remove. This is
the label added with the AddPermission action.AmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public GetQueueAttributesResult getQueueAttributes(String queueUrl, List<String> attributeNames)
Gets attributes for the specified queue. The following attributes are supported:
All - returns all values.ApproximateNumberOfMessages - returns the
approximate number of visible messages in a queue. For more
information, see
Resources Required to Process Messages
in the Amazon SQS Developer Guide .ApproximateNumberOfMessagesNotVisible - returns the
approximate number of messages that are not timed-out and not deleted.
For more information, see
Resources Required to Process Messages
in the Amazon SQS Developer Guide .VisibilityTimeout - returns the visibility timeout
for the queue. For more information about visibility timeout, see
Visibility Timeout
in the Amazon SQS Developer Guide .CreatedTimestamp - returns the time when the queue
was created (epoch time in seconds).LastModifiedTimestamp - returns the time when the
queue was last changed (epoch time in seconds).Policy - returns the queue's policy.MaximumMessageSize - returns the limit of how many
bytes a message can contain before Amazon SQS rejects it.MessageRetentionPeriod - returns the number of
seconds Amazon SQS retains a message.QueueArn - returns the queue's Amazon resource name
(ARN).ApproximateNumberOfMessagesDelayed - returns the
approximate number of messages that are pending to be added to the
queue.DelaySeconds - returns the default delay on the
queue in seconds.ReceiveMessageWaitTimeSeconds - returns the time
for which a ReceiveMessage call will wait for a message to
arrive.RedrivePolicy - returns the parameters for dead
letter queue functionality of the source queue. For more information
about RedrivePolicy and dead letter queues, see
Using Amazon SQS Dead Letter Queues
in the Amazon SQS Developer Guide .NOTE:Going forward, new attributes might be added. If you are writing code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
getQueueAttributes in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.attributeNames - A list of attributes to retrieve information
for.InvalidAttributeNameExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public SendMessageBatchResult sendMessageBatch(String queueUrl, List<SendMessageBatchRequestEntry> entries)
Delivers up to ten messages to the specified queue. This is a batch version of SendMessage. The result of the send action on each message is reported individually in the response. The maximum allowed individual message size is 256 KB (262,144 bytes).
The maximum total payload size (i.e., the sum of all a batch's individual message lengths) is also 256 KB (262,144 bytes).
If the DelaySeconds parameter is not specified for an
entry, the default for the queue is used.
IMPORTANT:The following list shows the characters (in Unicode) that are allowed in your message, according to the W3C XML specification. For more information, go to http://www.faqs.org/rfcs/rfc1321.html. If you send any characters that are not included in the list, your request will be rejected. #x9 | #xA | #xD | [#x20 to #xD7FF] | [#xE000 to #xFFFD] | [#x10000 to #x10FFFF]
IMPORTANT: Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of 200.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
sendMessageBatch in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.entries - A list of SendMessageBatchRequestEntry items.BatchEntryIdsNotDistinctExceptionTooManyEntriesInBatchRequestExceptionBatchRequestTooLongExceptionUnsupportedOperationExceptionInvalidBatchEntryIdExceptionEmptyBatchRequestExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void deleteQueue(String queueUrl)
Deletes the queue specified by the queue URL , regardless of whether the queue is empty. If the specified queue does not exist, Amazon SQS returns a successful response.
IMPORTANT: Use DeleteQueue with care; once you delete your queue, any messages in the queue are no longer available.
When you delete a queue, the deletion process takes up to 60 seconds. Requests you send involving that queue during the 60 seconds might succeed. For example, a SendMessage request might succeed, but after the 60 seconds, the queue and that message you sent no longer exist. Also, when you delete a queue, you must wait at least 60 seconds before creating a queue with the same name.
We reserve the right to delete queues that have had no activity for more than 30 days. For more information, see How Amazon SQS Queues Work in the Amazon SQS Developer Guide .
deleteQueue in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.AmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public SendMessageResult sendMessage(String queueUrl, String messageBody)
Delivers a message to the specified queue. With Amazon SQS, you now have the ability to send large payload messages that are up to 256KB (262,144 bytes) in size. To send large payloads, you must use an AWS SDK that supports SigV4 signing. To verify whether SigV4 is supported for an AWS SDK, check the SDK release notes.
IMPORTANT: The following list shows the characters (in Unicode) allowed in your message, according to the W3C XML specification. For more information, go to http://www.w3.org/TR/REC-xml/#charsets If you send any characters not included in the list, your request will be rejected. #x9 | #xA | #xD | [#x20 to #xD7FF] | [#xE000 to #xFFFD] | [#x10000 to #x10FFFF]
sendMessage in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.messageBody - The message to send. String maximum 256 KB in size.
For a list of allowed characters, see the preceding important note.InvalidMessageContentsExceptionUnsupportedOperationExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public ReceiveMessageResult receiveMessage(String queueUrl)
Retrieves one or more messages, with a maximum limit of 10 messages,
from the specified queue. Long poll support is enabled by using the
WaitTimeSeconds parameter. For more information, see
Amazon SQS Long Poll
in the Amazon SQS Developer Guide .
Short poll is the default behavior where a weighted random set of
machines is sampled on a ReceiveMessage call. This means
only the messages on the sampled machines are returned. If the number
of messages in the queue is small (less than 1000), it is likely you
will get fewer messages than you requested per
ReceiveMessage call. If the number of messages in the
queue is extremely small, you might not receive any messages in a
particular ReceiveMessage response; in which case you
should repeat the request.
For each message returned, the response includes the following:
Message body
MD5 digest of the message body. For information about MD5, go to http://www.faqs.org/rfcs/rfc1321.html .
Message ID you received when you sent the message to the queue.
Receipt handle.
Message attributes.
MD5 digest of the message attributes.
The receipt handle is the identifier you must provide when deleting the message. For more information, see Queue and Message Identifiers in the Amazon SQS Developer Guide .
You can provide the VisibilityTimeout parameter in your
request, which will be applied to the messages that Amazon SQS returns
in the response. If you do not include the parameter, the overall
visibility timeout for the queue is used for the returned messages.
For more information, see
Visibility Timeout
in the Amazon SQS Developer Guide .
NOTE: Going forward, new attributes might be added. If you are writing code that calls this action, we recommend that you structure your code so that it can handle new attributes gracefully.
receiveMessage in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.OverLimitExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public ListQueuesResult listQueues(String queueNamePrefix)
Returns a list of your queues. The maximum number of queues that can
be returned is 1000. If you specify a value for the optional
QueueNamePrefix parameter, only queues with a name
beginning with the specified value are returned.
listQueues in interface AmazonSQSqueueNamePrefix - A string to use for filtering the list results.
Only those queues whose name begins with the specified string are
returned.AmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public DeleteMessageBatchResult deleteMessageBatch(String queueUrl, List<DeleteMessageBatchRequestEntry> entries)
Deletes up to ten messages from the specified queue. This is a batch version of DeleteMessage. The result of the delete action on each message is reported individually in the response.
IMPORTANT: Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of 200.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
deleteMessageBatch in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.entries - A list of receipt handles for the messages to be
deleted.BatchEntryIdsNotDistinctExceptionTooManyEntriesInBatchRequestExceptionInvalidBatchEntryIdExceptionEmptyBatchRequestExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public CreateQueueResult createQueue(String queueName)
Creates a new queue, or returns the URL of an existing one. When you
request CreateQueue , you provide a name for the queue.
To successfully create a new queue, you must provide a name that is
unique within the scope of your own queues.
NOTE: If you delete a queue, you must wait at least 60 seconds before creating a queue with the same name.
You may pass one or more attributes in the request. If you do not provide a value for any attribute, the queue will have the default value for that attribute. Permitted attributes are the same that can be set using SetQueueAttributes.
NOTE: Use GetQueueUrl to get a queue's URL. GetQueueUrl requires only the QueueName parameter.
If you provide the name of an existing queue, along with the exact
names and values of all the queue's attributes,
CreateQueue returns the queue URL for the existing queue.
If the queue name, attribute names, or attribute values do not match
an existing queue, CreateQueue returns an error.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
createQueue in interface AmazonSQSqueueName - The name for the queue to be created.QueueNameExistsExceptionQueueDeletedRecentlyExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void addPermission(String queueUrl, String label, List<String> aWSAccountIds, List<String> actions)
Adds a permission to a queue for a specific principal . This allows for sharing access to the queue.
When you create a queue, you have full control access rights for the queue. Only you (as owner of the queue) can grant or deny permissions to the queue. For more information about these permissions, see Shared Queues in the Amazon SQS Developer Guide .
NOTE: AddPermission writes an Amazon SQS-generated policy. If you want to write your own policy, use SetQueueAttributes to upload your policy. For more information about writing your own policy, see Using The Access Policy Language in the Amazon SQS Developer Guide.
NOTE:Some API actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:
&Attribute.1=this
&Attribute.2=that
addPermission in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.label - The unique identification of the permission you're
setting (e.g., AliceSendMessage). Constraints: Maximum 80
characters; alphanumeric characters, hyphens (-), and underscores (_)
are allowed.aWSAccountIds - The AWS account number of the principal
who will be given permission. The principal must have an AWS account,
but does not need to be signed up for Amazon SQS. For information
about locating the AWS account identification, see Your
AWS Identifiers in the Amazon SQS Developer Guide.actions - The action the client wants to allow for the specified
principal. The following are valid values: * | SendMessage |
ReceiveMessage | DeleteMessage | ChangeMessageVisibility |
GetQueueAttributes | GetQueueUrl. For more information about
these actions, see Understanding
Permissions in the Amazon SQS Developer Guide.
Specifying SendMessage, DeleteMessage, or
ChangeMessageVisibility for the ActionName.n
also grants permissions for the corresponding batch versions of those
actions: SendMessageBatch,
DeleteMessageBatch, and
ChangeMessageVisibilityBatch.
OverLimitExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public void deleteMessage(String queueUrl, String receiptHandle)
Deletes the specified message from the specified queue. You specify
the message by using the message's receipt handle and not
the message ID you received when you sent the message.
Even if the message is locked by another reader due to the visibility
timeout setting, it is still deleted from the queue. If you leave a
message in the queue for longer than the queue's configured retention
period, Amazon SQS automatically deletes it.
NOTE: The receipt handle is associated with a specific instance of receiving the message. If you receive a message more than once, the receipt handle you get each time you receive the message is different. When you request DeleteMessage, if you don't provide the most recently received receipt handle for the message, the request will still succeed, but the message might not be deleted.
IMPORTANT: It is possible you will receive a message even after you have deleted it. This might happen on rare occasions if one of the servers storing a copy of the message is unavailable when you request to delete the message. The copy remains on the server and might be returned to you again on a subsequent receive request. You should create your system to be idempotent so that receiving a particular message more than once is not a problem.
deleteMessage in interface AmazonSQSqueueUrl - The URL of the Amazon SQS queue to take action on.receiptHandle - The receipt handle associated with the message to
delete.ReceiptHandleIsInvalidExceptionInvalidIdFormatExceptionAmazonClientException - If any internal errors are encountered inside the client while
attempting to make the request or handle the response. For example
if a network connection is not available.AmazonServiceException - If an error response is returned by AmazonSQS indicating
either a problem with the data in the request, or a server side issue.public ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request)
Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic information for an executed request, you should use this method to retrieve it as soon as possible after executing the request.
getCachedResponseMetadata in interface AmazonSQSrequest - The originally executed requestCopyright © 2015. All rights reserved.