com.amazonaws.services.sqs.model

Class SetQueueAttributesRequest

java.lang.Object

com.amazonaws.AmazonWebServiceRequest

com.amazonaws.services.sqs.model.SetQueueAttributesRequest

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class SetQueueAttributesRequest
extends AmazonWebServiceRequest
implements java.io.Serializable

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.

In the future, new attributes might be added. When you write code that calls this action, we recommend structuring your code so that it can handle new attributes gracefully.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SetQueueAttributesRequest() Default constructor for SetQueueAttributesRequest object.
SetQueueAttributesRequest(java.lang.String queueUrl, java.util.Map<java.lang.String,java.lang.String> attributes) Constructs a new SetQueueAttributesRequest object.

Method Summary

Modifier and Type	Method and Description
SetQueueAttributesRequest	addAttributesEntry(java.lang.String key, java.lang.String value) A map of attributes to set.
SetQueueAttributesRequest	clearAttributesEntries() Removes all the entries added into Attributes.
boolean	equals(java.lang.Object obj)
java.util.Map<java.lang.String,java.lang.String>	getAttributes() A map of attributes to set.
java.lang.String	getQueueUrl() The URL of the Amazon SQS queue to take action on.
int	hashCode()
void	setAttributes(java.util.Map<java.lang.String,java.lang.String> attributes) A map of attributes to set.
void	setQueueUrl(java.lang.String queueUrl) The URL of the Amazon SQS queue to take action on.
java.lang.String	toString() Returns a string representation of this object; useful for testing and debugging.
SetQueueAttributesRequest	withAttributes(java.util.Map<java.lang.String,java.lang.String> attributes) A map of attributes to set.
SetQueueAttributesRequest	withQueueUrl(java.lang.String queueUrl) The URL of the Amazon SQS queue to take action on.

Methods inherited from class com.amazonaws.AmazonWebServiceRequest

clone, getCloneRoot, getCloneSource, getGeneralProgressListener, getRequestClientOptions, getRequestCredentials, getRequestMetricCollector, setGeneralProgressListener, setRequestCredentials, setRequestMetricCollector, withGeneralProgressListener, withRequestMetricCollector

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SetQueueAttributesRequest

public SetQueueAttributesRequest()

Default constructor for SetQueueAttributesRequest object. Callers should use the setter or fluent setter (with...) methods to initialize any additional object members.

SetQueueAttributesRequest

public SetQueueAttributesRequest(java.lang.String queueUrl,
                                 java.util.Map<java.lang.String,java.lang.String> attributes)

Constructs a new SetQueueAttributesRequest object. Callers should use the setter or fluent setter (with...) methods to initialize any additional object members.

Parameters:

queueUrl -

The URL of the Amazon SQS queue to take action on.

Queue URLs are case-sensitive.

attributes -

A map of attributes to set.

The following lists the names, descriptions, and values of the special request parameters that the SetQueueAttributes action uses:

• DelaySeconds - The number of seconds for which the delivery of all messages in the queue is delayed. An integer from 0 to 900 (15 minutes). The default is 0 (zero).

• MaximumMessageSize - The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1,024 bytes (1 KiB) up to 262,144 bytes (256 KiB). The default is 262,144 (256 KiB).

• MessageRetentionPeriod - The number of seconds for which Amazon SQS retains a message. An integer representing seconds, from 60 (1 minute) to 120,9600 (14 days). The default is 345,600 (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 number of seconds for which a ReceiveMessage action will wait for a message to arrive. An integer from 0 to 20 (seconds). The default is 0.

• RedrivePolicy - The parameters for the dead letter queue functionality of the source queue. For more information about the redrive policy and dead letter queues, see Using Amazon SQS Dead Letter Queues in the Amazon SQS Developer Guide.

  The dead letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead letter queue of a standard queue must also be a standard queue.

• VisibilityTimeout - The visibility timeout for the queue. An integer from 0 to 43200 (12 hours). The default is 30. For more information about the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide.

The following attribute applies only to FIFO (first-in-first-out) queues:

• ContentBasedDeduplication - Enables content-based deduplication. For more information, see Exactly-Once Processing in the Amazon SQS Developer Guide.

  • Every message must have a unique MessageDeduplicationId,

    • You may provide a MessageDeduplicationId explicitly.

    • If you aren't able to provide a MessageDeduplicationId and you enable ContentBasedDeduplication for your queue, Amazon SQS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

    • If you don't provide a MessageDeduplicationId and the queue doesn't have ContentBasedDeduplication set, the action fails with an error.

    • If the queue has ContentBasedDeduplication set, your MessageDeduplicationId overrides the generated one.

  • When ContentBasedDeduplication is in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered.

  • You can also use ContentBasedDeduplication for messages with identical content to be treated as duplicates.

  • If you send one message with ContentBasedDeduplication enabled and then another message with a MessageDeduplicationId that is the same as the one generated for the first MessageDeduplicationId, the two messages are treated as duplicates and only one copy of the message is delivered.

Any other valid special request parameters that are specified (such as ApproximateNumberOfMessages, ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, CreatedTimestamp, LastModifiedTimestamp, and QueueArn) will be ignored.

Method Detail

getQueueUrl

public java.lang.String getQueueUrl()

The URL of the Amazon SQS queue to take action on.

Queue URLs are case-sensitive.

Returns:

The URL of the Amazon SQS queue to take action on.

Queue URLs are case-sensitive.

setQueueUrl

public void setQueueUrl(java.lang.String queueUrl)

The URL of the Amazon SQS queue to take action on.

Queue URLs are case-sensitive.

Parameters:

queueUrl -

The URL of the Amazon SQS queue to take action on.

Queue URLs are case-sensitive.

withQueueUrl

public SetQueueAttributesRequest withQueueUrl(java.lang.String queueUrl)

The URL of the Amazon SQS queue to take action on.

Queue URLs are case-sensitive.

Returns a reference to this object so that method calls can be chained together.

Parameters:

queueUrl -

The URL of the Amazon SQS queue to take action on.

Queue URLs are case-sensitive.

Returns:

A reference to this updated object so that method calls can be chained together.

getAttributes

public java.util.Map<java.lang.String,java.lang.String> getAttributes()

A map of attributes to set.

The following lists the names, descriptions, and values of the special request parameters that the SetQueueAttributes action uses:

• DelaySeconds - The number of seconds for which the delivery of all messages in the queue is delayed. An integer from 0 to 900 (15 minutes). The default is 0 (zero).

• MaximumMessageSize - The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1,024 bytes (1 KiB) up to 262,144 bytes (256 KiB). The default is 262,144 (256 KiB).

• MessageRetentionPeriod - The number of seconds for which Amazon SQS retains a message. An integer representing seconds, from 60 (1 minute) to 120,9600 (14 days). The default is 345,600 (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 number of seconds for which a ReceiveMessage action will wait for a message to arrive. An integer from 0 to 20 (seconds). The default is 0.

• RedrivePolicy - The parameters for the dead letter queue functionality of the source queue. For more information about the redrive policy and dead letter queues, see Using Amazon SQS Dead Letter Queues in the Amazon SQS Developer Guide.

  The dead letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead letter queue of a standard queue must also be a standard queue.

• VisibilityTimeout - The visibility timeout for the queue. An integer from 0 to 43200 (12 hours). The default is 30. For more information about the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide.

The following attribute applies only to FIFO (first-in-first-out) queues:

• ContentBasedDeduplication - Enables content-based deduplication. For more information, see Exactly-Once Processing in the Amazon SQS Developer Guide.

  • Every message must have a unique MessageDeduplicationId,

    • You may provide a MessageDeduplicationId explicitly.

    • If you aren't able to provide a MessageDeduplicationId and you enable ContentBasedDeduplication for your queue, Amazon SQS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

    • If you don't provide a MessageDeduplicationId and the queue doesn't have ContentBasedDeduplication set, the action fails with an error.

    • If the queue has ContentBasedDeduplication set, your MessageDeduplicationId overrides the generated one.

  • When ContentBasedDeduplication is in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered.

  • You can also use ContentBasedDeduplication for messages with identical content to be treated as duplicates.

  • If you send one message with ContentBasedDeduplication enabled and then another message with a MessageDeduplicationId that is the same as the one generated for the first MessageDeduplicationId, the two messages are treated as duplicates and only one copy of the message is delivered.

Any other valid special request parameters that are specified (such as ApproximateNumberOfMessages, ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, CreatedTimestamp, LastModifiedTimestamp, and QueueArn) will be ignored.

Returns:

A map of attributes to set.

The following lists the names, descriptions, and values of the special request parameters that the SetQueueAttributes action uses:

• DelaySeconds - The number of seconds for which the delivery of all messages in the queue is delayed. An integer from 0 to 900 (15 minutes). The default is 0 (zero).

• MaximumMessageSize - The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1,024 bytes (1 KiB) up to 262,144 bytes (256 KiB). The default is 262,144 (256 KiB).

• MessageRetentionPeriod - The number of seconds for which Amazon SQS retains a message. An integer representing seconds, from 60 (1 minute) to 120,9600 (14 days). The default is 345,600 (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 number of seconds for which a ReceiveMessage action will wait for a message to arrive. An integer from 0 to 20 (seconds). The default is 0.

• RedrivePolicy - The parameters for the dead letter queue functionality of the source queue. For more information about the redrive policy and dead letter queues, see Using Amazon SQS Dead Letter Queues in the Amazon SQS Developer Guide.

  The dead letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead letter queue of a standard queue must also be a standard queue.

• VisibilityTimeout - The visibility timeout for the queue. An integer from 0 to 43200 (12 hours). The default is 30. For more information about the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide.

The following attribute applies only to FIFO (first-in-first-out) queues:

• ContentBasedDeduplication - Enables content-based deduplication. For more information, see Exactly-Once Processing in the Amazon SQS Developer Guide.

  • Every message must have a unique MessageDeduplicationId,

    • You may provide a MessageDeduplicationId explicitly.

    • If you aren't able to provide a MessageDeduplicationId and you enable ContentBasedDeduplication for your queue, Amazon SQS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

    • If you don't provide a MessageDeduplicationId and the queue doesn't have ContentBasedDeduplication set, the action fails with an error.

    • If the queue has ContentBasedDeduplication set, your MessageDeduplicationId overrides the generated one.

  • When ContentBasedDeduplication is in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered.

  • You can also use ContentBasedDeduplication for messages with identical content to be treated as duplicates.

  • If you send one message with ContentBasedDeduplication enabled and then another message with a MessageDeduplicationId that is the same as the one generated for the first MessageDeduplicationId, the two messages are treated as duplicates and only one copy of the message is delivered.

Any other valid special request parameters that are specified (such as ApproximateNumberOfMessages, ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, CreatedTimestamp, LastModifiedTimestamp , and QueueArn) will be ignored.

setAttributes

public void setAttributes(java.util.Map<java.lang.String,java.lang.String> attributes)

A map of attributes to set.

The following lists the names, descriptions, and values of the special request parameters that the SetQueueAttributes action uses:

• DelaySeconds - The number of seconds for which the delivery of all messages in the queue is delayed. An integer from 0 to 900 (15 minutes). The default is 0 (zero).

• MaximumMessageSize - The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1,024 bytes (1 KiB) up to 262,144 bytes (256 KiB). The default is 262,144 (256 KiB).

• MessageRetentionPeriod - The number of seconds for which Amazon SQS retains a message. An integer representing seconds, from 60 (1 minute) to 120,9600 (14 days). The default is 345,600 (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 number of seconds for which a ReceiveMessage action will wait for a message to arrive. An integer from 0 to 20 (seconds). The default is 0.

• RedrivePolicy - The parameters for the dead letter queue functionality of the source queue. For more information about the redrive policy and dead letter queues, see Using Amazon SQS Dead Letter Queues in the Amazon SQS Developer Guide.

  The dead letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead letter queue of a standard queue must also be a standard queue.

• VisibilityTimeout - The visibility timeout for the queue. An integer from 0 to 43200 (12 hours). The default is 30. For more information about the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide.

The following attribute applies only to FIFO (first-in-first-out) queues:

• ContentBasedDeduplication - Enables content-based deduplication. For more information, see Exactly-Once Processing in the Amazon SQS Developer Guide.

  • Every message must have a unique MessageDeduplicationId,

    • You may provide a MessageDeduplicationId explicitly.

    • If you aren't able to provide a MessageDeduplicationId and you enable ContentBasedDeduplication for your queue, Amazon SQS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

    • If you don't provide a MessageDeduplicationId and the queue doesn't have ContentBasedDeduplication set, the action fails with an error.

    • If the queue has ContentBasedDeduplication set, your MessageDeduplicationId overrides the generated one.

  • When ContentBasedDeduplication is in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered.

  • You can also use ContentBasedDeduplication for messages with identical content to be treated as duplicates.

  • If you send one message with ContentBasedDeduplication enabled and then another message with a MessageDeduplicationId that is the same as the one generated for the first MessageDeduplicationId, the two messages are treated as duplicates and only one copy of the message is delivered.

Any other valid special request parameters that are specified (such as ApproximateNumberOfMessages, ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, CreatedTimestamp, LastModifiedTimestamp, and QueueArn) will be ignored.

Parameters:

attributes -

A map of attributes to set.

The following lists the names, descriptions, and values of the special request parameters that the SetQueueAttributes action uses:

• DelaySeconds - The number of seconds for which the delivery of all messages in the queue is delayed. An integer from 0 to 900 (15 minutes). The default is 0 (zero).

• MaximumMessageSize - The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1,024 bytes (1 KiB) up to 262,144 bytes (256 KiB). The default is 262,144 (256 KiB).

• MessageRetentionPeriod - The number of seconds for which Amazon SQS retains a message. An integer representing seconds, from 60 (1 minute) to 120,9600 (14 days). The default is 345,600 (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 number of seconds for which a ReceiveMessage action will wait for a message to arrive. An integer from 0 to 20 (seconds). The default is 0.

• RedrivePolicy - The parameters for the dead letter queue functionality of the source queue. For more information about the redrive policy and dead letter queues, see Using Amazon SQS Dead Letter Queues in the Amazon SQS Developer Guide.

  The dead letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead letter queue of a standard queue must also be a standard queue.

• VisibilityTimeout - The visibility timeout for the queue. An integer from 0 to 43200 (12 hours). The default is 30. For more information about the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide.

The following attribute applies only to FIFO (first-in-first-out) queues:

• ContentBasedDeduplication - Enables content-based deduplication. For more information, see Exactly-Once Processing in the Amazon SQS Developer Guide.

  • Every message must have a unique MessageDeduplicationId,

    • You may provide a MessageDeduplicationId explicitly.

    • If you aren't able to provide a MessageDeduplicationId and you enable ContentBasedDeduplication for your queue, Amazon SQS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

    • If you don't provide a MessageDeduplicationId and the queue doesn't have ContentBasedDeduplication set, the action fails with an error.

    • If the queue has ContentBasedDeduplication set, your MessageDeduplicationId overrides the generated one.

  • When ContentBasedDeduplication is in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered.

  • You can also use ContentBasedDeduplication for messages with identical content to be treated as duplicates.

  • If you send one message with ContentBasedDeduplication enabled and then another message with a MessageDeduplicationId that is the same as the one generated for the first MessageDeduplicationId, the two messages are treated as duplicates and only one copy of the message is delivered.

Any other valid special request parameters that are specified (such as ApproximateNumberOfMessages, ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, CreatedTimestamp, LastModifiedTimestamp, and QueueArn) will be ignored.

withAttributes

public SetQueueAttributesRequest withAttributes(java.util.Map<java.lang.String,java.lang.String> attributes)

A map of attributes to set.

The following lists the names, descriptions, and values of the special request parameters that the SetQueueAttributes action uses:

• DelaySeconds - The number of seconds for which the delivery of all messages in the queue is delayed. An integer from 0 to 900 (15 minutes). The default is 0 (zero).

• MaximumMessageSize - The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1,024 bytes (1 KiB) up to 262,144 bytes (256 KiB). The default is 262,144 (256 KiB).

• MessageRetentionPeriod - The number of seconds for which Amazon SQS retains a message. An integer representing seconds, from 60 (1 minute) to 120,9600 (14 days). The default is 345,600 (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 number of seconds for which a ReceiveMessage action will wait for a message to arrive. An integer from 0 to 20 (seconds). The default is 0.

• RedrivePolicy - The parameters for the dead letter queue functionality of the source queue. For more information about the redrive policy and dead letter queues, see Using Amazon SQS Dead Letter Queues in the Amazon SQS Developer Guide.

  The dead letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead letter queue of a standard queue must also be a standard queue.

• VisibilityTimeout - The visibility timeout for the queue. An integer from 0 to 43200 (12 hours). The default is 30. For more information about the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide.

The following attribute applies only to FIFO (first-in-first-out) queues:

• ContentBasedDeduplication - Enables content-based deduplication. For more information, see Exactly-Once Processing in the Amazon SQS Developer Guide.

  • Every message must have a unique MessageDeduplicationId,

    • You may provide a MessageDeduplicationId explicitly.

    • If you aren't able to provide a MessageDeduplicationId and you enable ContentBasedDeduplication for your queue, Amazon SQS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

    • If you don't provide a MessageDeduplicationId and the queue doesn't have ContentBasedDeduplication set, the action fails with an error.

    • If the queue has ContentBasedDeduplication set, your MessageDeduplicationId overrides the generated one.

  • When ContentBasedDeduplication is in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered.

  • You can also use ContentBasedDeduplication for messages with identical content to be treated as duplicates.

  • If you send one message with ContentBasedDeduplication enabled and then another message with a MessageDeduplicationId that is the same as the one generated for the first MessageDeduplicationId, the two messages are treated as duplicates and only one copy of the message is delivered.

Any other valid special request parameters that are specified (such as ApproximateNumberOfMessages, ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, CreatedTimestamp, LastModifiedTimestamp, and QueueArn) will be ignored.

Returns a reference to this object so that method calls can be chained together.

Parameters:

attributes -

A map of attributes to set.

The following lists the names, descriptions, and values of the special request parameters that the SetQueueAttributes action uses:

• DelaySeconds - The number of seconds for which the delivery of all messages in the queue is delayed. An integer from 0 to 900 (15 minutes). The default is 0 (zero).

• MaximumMessageSize - The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1,024 bytes (1 KiB) up to 262,144 bytes (256 KiB). The default is 262,144 (256 KiB).

• MessageRetentionPeriod - The number of seconds for which Amazon SQS retains a message. An integer representing seconds, from 60 (1 minute) to 120,9600 (14 days). The default is 345,600 (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 number of seconds for which a ReceiveMessage action will wait for a message to arrive. An integer from 0 to 20 (seconds). The default is 0.

• RedrivePolicy - The parameters for the dead letter queue functionality of the source queue. For more information about the redrive policy and dead letter queues, see Using Amazon SQS Dead Letter Queues in the Amazon SQS Developer Guide.

  The dead letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead letter queue of a standard queue must also be a standard queue.

• VisibilityTimeout - The visibility timeout for the queue. An integer from 0 to 43200 (12 hours). The default is 30. For more information about the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide.

The following attribute applies only to FIFO (first-in-first-out) queues:

• ContentBasedDeduplication - Enables content-based deduplication. For more information, see Exactly-Once Processing in the Amazon SQS Developer Guide.

  • Every message must have a unique MessageDeduplicationId,

    • You may provide a MessageDeduplicationId explicitly.

    • If you aren't able to provide a MessageDeduplicationId and you enable ContentBasedDeduplication for your queue, Amazon SQS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

    • If you don't provide a MessageDeduplicationId and the queue doesn't have ContentBasedDeduplication set, the action fails with an error.

    • If the queue has ContentBasedDeduplication set, your MessageDeduplicationId overrides the generated one.

  • When ContentBasedDeduplication is in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered.

  • You can also use ContentBasedDeduplication for messages with identical content to be treated as duplicates.

  • If you send one message with ContentBasedDeduplication enabled and then another message with a MessageDeduplicationId that is the same as the one generated for the first MessageDeduplicationId, the two messages are treated as duplicates and only one copy of the message is delivered.

Any other valid special request parameters that are specified (such as ApproximateNumberOfMessages, ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, CreatedTimestamp, LastModifiedTimestamp, and QueueArn) will be ignored.

Returns:

A reference to this updated object so that method calls can be chained together.

addAttributesEntry

public SetQueueAttributesRequest addAttributesEntry(java.lang.String key,
                                                    java.lang.String value)

A map of attributes to set.

The following lists the names, descriptions, and values of the special request parameters that the SetQueueAttributes action uses:

• DelaySeconds - The number of seconds for which the delivery of all messages in the queue is delayed. An integer from 0 to 900 (15 minutes). The default is 0 (zero).

• MaximumMessageSize - The limit of how many bytes a message can contain before Amazon SQS rejects it. An integer from 1,024 bytes (1 KiB) up to 262,144 bytes (256 KiB). The default is 262,144 (256 KiB).

• MessageRetentionPeriod - The number of seconds for which Amazon SQS retains a message. An integer representing seconds, from 60 (1 minute) to 120,9600 (14 days). The default is 345,600 (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 number of seconds for which a ReceiveMessage action will wait for a message to arrive. An integer from 0 to 20 (seconds). The default is 0.

• RedrivePolicy - The parameters for the dead letter queue functionality of the source queue. For more information about the redrive policy and dead letter queues, see Using Amazon SQS Dead Letter Queues in the Amazon SQS Developer Guide.

  The dead letter queue of a FIFO queue must also be a FIFO queue. Similarly, the dead letter queue of a standard queue must also be a standard queue.

• VisibilityTimeout - The visibility timeout for the queue. An integer from 0 to 43200 (12 hours). The default is 30. For more information about the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide.

The following attribute applies only to FIFO (first-in-first-out) queues:

• ContentBasedDeduplication - Enables content-based deduplication. For more information, see Exactly-Once Processing in the Amazon SQS Developer Guide.

  • Every message must have a unique MessageDeduplicationId,

    • You may provide a MessageDeduplicationId explicitly.

    • If you aren't able to provide a MessageDeduplicationId and you enable ContentBasedDeduplication for your queue, Amazon SQS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

    • If you don't provide a MessageDeduplicationId and the queue doesn't have ContentBasedDeduplication set, the action fails with an error.

    • If the queue has ContentBasedDeduplication set, your MessageDeduplicationId overrides the generated one.

  • When ContentBasedDeduplication is in effect, messages with identical content sent within the deduplication interval are treated as duplicates and only one copy of the message is delivered.

  • You can also use ContentBasedDeduplication for messages with identical content to be treated as duplicates.

  • If you send one message with ContentBasedDeduplication enabled and then another message with a MessageDeduplicationId that is the same as the one generated for the first MessageDeduplicationId, the two messages are treated as duplicates and only one copy of the message is delivered.

Any other valid special request parameters that are specified (such as ApproximateNumberOfMessages, ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, CreatedTimestamp, LastModifiedTimestamp, and QueueArn) will be ignored.

The method adds a new key-value pair into Attributes parameter, and returns a reference to this object so that method calls can be chained together.

Parameters:

key - The key of the entry to be added into Attributes.

value - The corresponding value of the entry to be added into Attributes.

Returns:

A reference to this updated object so that method calls can be chained together.

clearAttributesEntries

public SetQueueAttributesRequest clearAttributesEntries()

Removes all the entries added into Attributes.

Returns a reference to this object so that method calls can be chained together.

toString

public java.lang.String toString()

Returns a string representation of this object; useful for testing and debugging.

Overrides:

toString in class java.lang.Object

Returns:

A string representation of this object.

See Also:

Object.toString()

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object