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The AWS Java SDK for Amazon SQS module holds the client classes that are used for communicating with Amazon Simple Queue Service

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/*
 * Copyright 2019-2024 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
 * the License. A copy of the License is located at
 * 
 * http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
 * and limitations under the License.
 */
package com.amazonaws.services.sqs.model;

import java.io.Serializable;
import javax.annotation.Generated;

import com.amazonaws.AmazonWebServiceRequest;

/**
 * 

* * @see AWS API * Documentation */ @Generated("com.amazonaws:aws-java-sdk-code-generator") public class GetQueueAttributesRequest extends com.amazonaws.AmazonWebServiceRequest implements Serializable, Cloneable { /** *

* The URL of the Amazon SQS queue whose attribute information is retrieved. *

*

* Queue URLs and names are case-sensitive. *

*/ private String queueUrl; /** *

* A list of attributes for which to retrieve information. *

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, the * request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, and * ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute after the * producers stop sending messages. This period is required for the queue metadata to reach eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for retrieval * from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue that * are delayed and not available for reading immediately. This can happen when the queue is configured as a delay * queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are in * flight. Messages are considered to be in flight if they have been sent to a client but have not yet been * deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon SQS * rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains a * message. When you change a queue's attributes, the change can take up to 60 seconds for most of the attributes to * propagate throughout the Amazon SQS system. Changes made to the MessageRetentionPeriod attribute can * take up to 15 minutes and will impact existing messages in the queue potentially causing them to be expired and * deleted if the MessageRetentionPeriod is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about the * visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue functionality of * the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon SQS * moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being moved * to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the dead-letter * queue redrive permission and which source queues can specify dead-letter queues as a JSON object. The parameters * are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the current * queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region can * specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify this queue * as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this queue * as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source queue * ARNs. To allow more than 10 source queues to specify dead-letter queues, set the redrivePermission * parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) for * Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS can * reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS encryption using * SQS owned encryption keys. Only one server-side encryption option is supported per queue (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you * can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the queue. * For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high * throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or queue * level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire queue * or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas * related to messages in the Amazon SQS Developer Guide. *

*/ private com.amazonaws.internal.SdkInternalList attributeNames; /** * Default constructor for GetQueueAttributesRequest object. Callers should use the setter or fluent setter * (with...) methods to initialize the object after creating it. */ public GetQueueAttributesRequest() { } /** * Constructs a new GetQueueAttributesRequest object. Callers should use the setter or fluent setter (with...) * methods to initialize any additional object members. * * @param queueUrl * The URL of the Amazon SQS queue whose attribute information is retrieved.

*

* Queue URLs and names are case-sensitive. */ public GetQueueAttributesRequest(String queueUrl) { setQueueUrl(queueUrl); } /** * Constructs a new GetQueueAttributesRequest object. Callers should use the setter or fluent setter (with...) * methods to initialize any additional object members. * * @param queueUrl * The URL of the Amazon SQS queue whose attribute information is retrieved.

*

* Queue URLs and names are case-sensitive. * @param attributeNames * A list of attributes for which to retrieve information. *

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, * the request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, * and ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute * after the producers stop sending messages. This period is required for the queue metadata to reach * eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for * retrieval from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue * that are delayed and not available for reading immediately. This can happen when the queue is configured * as a delay queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are * in flight. Messages are considered to be in flight if they have been sent to a client but have not * yet been deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon * SQS rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains * a message. When you change a queue's attributes, the change can take up to 60 seconds for most of the * attributes to propagate throughout the Amazon SQS system. Changes made to the * MessageRetentionPeriod attribute can take up to 15 minutes and will impact existing messages * in the queue potentially causing them to be expired and deleted if the MessageRetentionPeriod * is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about * the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue * functionality of the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon * SQS moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being * moved to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the * dead-letter queue redrive permission and which source queues can specify dead-letter queues as a JSON * object. The parameters are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the * current queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region * can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify * this queue as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this * queue as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source * queue ARNs. To allow more than 10 source queues to specify dead-letter queues, set the * redrivePermission parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) * for Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS * can reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS * encryption using SQS owned encryption keys. Only one server-side encryption option is supported per queue * (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the * queue. For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or * queue level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire * queue or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas related to messages in the Amazon SQS Developer Guide. */ public GetQueueAttributesRequest(String queueUrl, java.util.List attributeNames) { setQueueUrl(queueUrl); setAttributeNames(attributeNames); } /** *

* The URL of the Amazon SQS queue whose attribute information is retrieved. *

*

* Queue URLs and names are case-sensitive. *

* * @param queueUrl * The URL of the Amazon SQS queue whose attribute information is retrieved.

*

* Queue URLs and names are case-sensitive. */ public void setQueueUrl(String queueUrl) { this.queueUrl = queueUrl; } /** *

* The URL of the Amazon SQS queue whose attribute information is retrieved. *

*

* Queue URLs and names are case-sensitive. *

* * @return The URL of the Amazon SQS queue whose attribute information is retrieved.

*

* Queue URLs and names are case-sensitive. */ public String getQueueUrl() { return this.queueUrl; } /** *

* The URL of the Amazon SQS queue whose attribute information is retrieved. *

*

* Queue URLs and names are case-sensitive. *

* * @param queueUrl * The URL of the Amazon SQS queue whose attribute information is retrieved.

*

* Queue URLs and names are case-sensitive. * @return Returns a reference to this object so that method calls can be chained together. */ public GetQueueAttributesRequest withQueueUrl(String queueUrl) { setQueueUrl(queueUrl); return this; } /** *

* A list of attributes for which to retrieve information. *

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, the * request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, and * ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute after the * producers stop sending messages. This period is required for the queue metadata to reach eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for retrieval * from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue that * are delayed and not available for reading immediately. This can happen when the queue is configured as a delay * queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are in * flight. Messages are considered to be in flight if they have been sent to a client but have not yet been * deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon SQS * rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains a * message. When you change a queue's attributes, the change can take up to 60 seconds for most of the attributes to * propagate throughout the Amazon SQS system. Changes made to the MessageRetentionPeriod attribute can * take up to 15 minutes and will impact existing messages in the queue potentially causing them to be expired and * deleted if the MessageRetentionPeriod is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about the * visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue functionality of * the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon SQS * moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being moved * to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the dead-letter * queue redrive permission and which source queues can specify dead-letter queues as a JSON object. The parameters * are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the current * queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region can * specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify this queue * as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this queue * as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source queue * ARNs. To allow more than 10 source queues to specify dead-letter queues, set the redrivePermission * parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) for * Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS can * reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS encryption using * SQS owned encryption keys. Only one server-side encryption option is supported per queue (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you * can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the queue. * For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high * throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or queue * level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire queue * or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas * related to messages in the Amazon SQS Developer Guide. *

* * @return A list of attributes for which to retrieve information.

*

* The AttributeNames parameter is optional, but if you don't specify values for this * parameter, the request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, * and ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute * after the producers stop sending messages. This period is required for the queue metadata to reach * eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for * retrieval from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue * that are delayed and not available for reading immediately. This can happen when the queue is configured * as a delay queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are * in flight. Messages are considered to be in flight if they have been sent to a client but have not * yet been deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon * SQS rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS * retains a message. When you change a queue's attributes, the change can take up to 60 seconds for most of * the attributes to propagate throughout the Amazon SQS system. Changes made to the * MessageRetentionPeriod attribute can take up to 15 minutes and will impact existing messages * in the queue potentially causing them to be expired and deleted if the * MessageRetentionPeriod is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about * the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue * functionality of the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which * Amazon SQS moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before * being moved to the dead-letter queue. Default: 10. When the ReceiveCount for a message * exceeds the maxReceiveCount for a queue, Amazon SQS moves the message to the * dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the * dead-letter queue redrive permission and which source queues can specify dead-letter queues as a JSON * object. The parameters are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the * current queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same * Region can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify * this queue as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify * this queue as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source * queue ARNs. To allow more than 10 source queues to specify dead-letter queues, set the * redrivePermission parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) * for Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS * can reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see * How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS * encryption using SQS owned encryption keys. Only one server-side encryption option is supported per queue * (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see * FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the * queue. For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or * queue level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the * entire queue or per message group. Valid values are perQueue and * perMessageGroupId. The perMessageGroupId value is allowed only when the value * for DeduplicationScope is messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas related to messages in the Amazon SQS Developer Guide. * @see QueueAttributeName */ public java.util.List getAttributeNames() { if (attributeNames == null) { attributeNames = new com.amazonaws.internal.SdkInternalList(); } return attributeNames; } /** *

* A list of attributes for which to retrieve information. *

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, the * request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, and * ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute after the * producers stop sending messages. This period is required for the queue metadata to reach eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for retrieval * from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue that * are delayed and not available for reading immediately. This can happen when the queue is configured as a delay * queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are in * flight. Messages are considered to be in flight if they have been sent to a client but have not yet been * deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon SQS * rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains a * message. When you change a queue's attributes, the change can take up to 60 seconds for most of the attributes to * propagate throughout the Amazon SQS system. Changes made to the MessageRetentionPeriod attribute can * take up to 15 minutes and will impact existing messages in the queue potentially causing them to be expired and * deleted if the MessageRetentionPeriod is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about the * visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue functionality of * the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon SQS * moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being moved * to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the dead-letter * queue redrive permission and which source queues can specify dead-letter queues as a JSON object. The parameters * are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the current * queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region can * specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify this queue * as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this queue * as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source queue * ARNs. To allow more than 10 source queues to specify dead-letter queues, set the redrivePermission * parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) for * Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS can * reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS encryption using * SQS owned encryption keys. Only one server-side encryption option is supported per queue (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you * can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the queue. * For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high * throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or queue * level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire queue * or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas * related to messages in the Amazon SQS Developer Guide. *

* * @param attributeNames * A list of attributes for which to retrieve information.

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, * the request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, * and ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute * after the producers stop sending messages. This period is required for the queue metadata to reach * eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for * retrieval from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue * that are delayed and not available for reading immediately. This can happen when the queue is configured * as a delay queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are * in flight. Messages are considered to be in flight if they have been sent to a client but have not * yet been deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon * SQS rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains * a message. When you change a queue's attributes, the change can take up to 60 seconds for most of the * attributes to propagate throughout the Amazon SQS system. Changes made to the * MessageRetentionPeriod attribute can take up to 15 minutes and will impact existing messages * in the queue potentially causing them to be expired and deleted if the MessageRetentionPeriod * is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about * the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue * functionality of the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon * SQS moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being * moved to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the * dead-letter queue redrive permission and which source queues can specify dead-letter queues as a JSON * object. The parameters are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the * current queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region * can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify * this queue as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this * queue as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source * queue ARNs. To allow more than 10 source queues to specify dead-letter queues, set the * redrivePermission parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) * for Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS * can reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS * encryption using SQS owned encryption keys. Only one server-side encryption option is supported per queue * (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the * queue. For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or * queue level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire * queue or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas related to messages in the Amazon SQS Developer Guide. * @see QueueAttributeName */ public void setAttributeNames(java.util.Collection attributeNames) { if (attributeNames == null) { this.attributeNames = null; return; } this.attributeNames = new com.amazonaws.internal.SdkInternalList(attributeNames); } /** *

* A list of attributes for which to retrieve information. *

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, the * request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, and * ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute after the * producers stop sending messages. This period is required for the queue metadata to reach eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for retrieval * from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue that * are delayed and not available for reading immediately. This can happen when the queue is configured as a delay * queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are in * flight. Messages are considered to be in flight if they have been sent to a client but have not yet been * deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon SQS * rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains a * message. When you change a queue's attributes, the change can take up to 60 seconds for most of the attributes to * propagate throughout the Amazon SQS system. Changes made to the MessageRetentionPeriod attribute can * take up to 15 minutes and will impact existing messages in the queue potentially causing them to be expired and * deleted if the MessageRetentionPeriod is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about the * visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue functionality of * the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon SQS * moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being moved * to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the dead-letter * queue redrive permission and which source queues can specify dead-letter queues as a JSON object. The parameters * are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the current * queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region can * specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify this queue * as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this queue * as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source queue * ARNs. To allow more than 10 source queues to specify dead-letter queues, set the redrivePermission * parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) for * Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS can * reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS encryption using * SQS owned encryption keys. Only one server-side encryption option is supported per queue (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you * can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the queue. * For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high * throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or queue * level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire queue * or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas * related to messages in the Amazon SQS Developer Guide. *

*

* NOTE: This method appends the values to the existing list (if any). Use * {@link #setAttributeNames(java.util.Collection)} or {@link #withAttributeNames(java.util.Collection)} if you want * to override the existing values. *

* * @param attributeNames * A list of attributes for which to retrieve information.

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, * the request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, * and ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute * after the producers stop sending messages. This period is required for the queue metadata to reach * eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for * retrieval from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue * that are delayed and not available for reading immediately. This can happen when the queue is configured * as a delay queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are * in flight. Messages are considered to be in flight if they have been sent to a client but have not * yet been deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon * SQS rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains * a message. When you change a queue's attributes, the change can take up to 60 seconds for most of the * attributes to propagate throughout the Amazon SQS system. Changes made to the * MessageRetentionPeriod attribute can take up to 15 minutes and will impact existing messages * in the queue potentially causing them to be expired and deleted if the MessageRetentionPeriod * is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about * the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue * functionality of the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon * SQS moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being * moved to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the * dead-letter queue redrive permission and which source queues can specify dead-letter queues as a JSON * object. The parameters are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the * current queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region * can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify * this queue as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this * queue as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source * queue ARNs. To allow more than 10 source queues to specify dead-letter queues, set the * redrivePermission parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) * for Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS * can reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS * encryption using SQS owned encryption keys. Only one server-side encryption option is supported per queue * (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the * queue. For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or * queue level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire * queue or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas related to messages in the Amazon SQS Developer Guide. * @return Returns a reference to this object so that method calls can be chained together. * @see QueueAttributeName */ public GetQueueAttributesRequest withAttributeNames(String... attributeNames) { if (this.attributeNames == null) { setAttributeNames(new com.amazonaws.internal.SdkInternalList(attributeNames.length)); } for (String ele : attributeNames) { this.attributeNames.add(ele); } return this; } /** *

* A list of attributes for which to retrieve information. *

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, the * request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, and * ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute after the * producers stop sending messages. This period is required for the queue metadata to reach eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for retrieval * from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue that * are delayed and not available for reading immediately. This can happen when the queue is configured as a delay * queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are in * flight. Messages are considered to be in flight if they have been sent to a client but have not yet been * deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon SQS * rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains a * message. When you change a queue's attributes, the change can take up to 60 seconds for most of the attributes to * propagate throughout the Amazon SQS system. Changes made to the MessageRetentionPeriod attribute can * take up to 15 minutes and will impact existing messages in the queue potentially causing them to be expired and * deleted if the MessageRetentionPeriod is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about the * visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue functionality of * the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon SQS * moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being moved * to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the dead-letter * queue redrive permission and which source queues can specify dead-letter queues as a JSON object. The parameters * are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the current * queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region can * specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify this queue * as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this queue * as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source queue * ARNs. To allow more than 10 source queues to specify dead-letter queues, set the redrivePermission * parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) for * Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS can * reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS encryption using * SQS owned encryption keys. Only one server-side encryption option is supported per queue (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you * can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the queue. * For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high * throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or queue * level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire queue * or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas * related to messages in the Amazon SQS Developer Guide. *

* * @param attributeNames * A list of attributes for which to retrieve information.

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, * the request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, * and ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute * after the producers stop sending messages. This period is required for the queue metadata to reach * eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for * retrieval from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue * that are delayed and not available for reading immediately. This can happen when the queue is configured * as a delay queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are * in flight. Messages are considered to be in flight if they have been sent to a client but have not * yet been deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon * SQS rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains * a message. When you change a queue's attributes, the change can take up to 60 seconds for most of the * attributes to propagate throughout the Amazon SQS system. Changes made to the * MessageRetentionPeriod attribute can take up to 15 minutes and will impact existing messages * in the queue potentially causing them to be expired and deleted if the MessageRetentionPeriod * is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about * the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue * functionality of the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon * SQS moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being * moved to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the * dead-letter queue redrive permission and which source queues can specify dead-letter queues as a JSON * object. The parameters are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the * current queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region * can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify * this queue as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this * queue as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source * queue ARNs. To allow more than 10 source queues to specify dead-letter queues, set the * redrivePermission parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) * for Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS * can reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS * encryption using SQS owned encryption keys. Only one server-side encryption option is supported per queue * (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the * queue. For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or * queue level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire * queue or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas related to messages in the Amazon SQS Developer Guide. * @return Returns a reference to this object so that method calls can be chained together. * @see QueueAttributeName */ public GetQueueAttributesRequest withAttributeNames(java.util.Collection attributeNames) { setAttributeNames(attributeNames); return this; } /** *

* A list of attributes for which to retrieve information. *

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, the * request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, and * ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute after the * producers stop sending messages. This period is required for the queue metadata to reach eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for retrieval * from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue that * are delayed and not available for reading immediately. This can happen when the queue is configured as a delay * queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are in * flight. Messages are considered to be in flight if they have been sent to a client but have not yet been * deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon SQS * rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains a * message. When you change a queue's attributes, the change can take up to 60 seconds for most of the attributes to * propagate throughout the Amazon SQS system. Changes made to the MessageRetentionPeriod attribute can * take up to 15 minutes and will impact existing messages in the queue potentially causing them to be expired and * deleted if the MessageRetentionPeriod is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about the * visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue functionality of * the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon SQS * moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being moved * to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the dead-letter * queue redrive permission and which source queues can specify dead-letter queues as a JSON object. The parameters * are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the current * queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region can * specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify this queue * as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this queue * as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source queue * ARNs. To allow more than 10 source queues to specify dead-letter queues, set the redrivePermission * parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) for * Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS can * reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS encryption using * SQS owned encryption keys. Only one server-side encryption option is supported per queue (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you * can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the queue. * For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high * throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or queue * level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire queue * or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas * related to messages in the Amazon SQS Developer Guide. *

* * @param attributeNames * A list of attributes for which to retrieve information.

*

* The AttributeNames parameter is optional, but if you don't specify values for this parameter, * the request returns empty results. *

* *

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

*
*

* The following attributes are supported: *

* *

* The ApproximateNumberOfMessagesDelayed, ApproximateNumberOfMessagesNotVisible, * and ApproximateNumberOfMessages metrics may not achieve consistency until at least 1 minute * after the producers stop sending messages. This period is required for the queue metadata to reach * eventual consistency. *

*
*
    *
  • *

    * All – Returns all values. *

    *
  • *
  • *

    * ApproximateNumberOfMessages – Returns the approximate number of messages available for * retrieval from the queue. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesDelayed – Returns the approximate number of messages in the queue * that are delayed and not available for reading immediately. This can happen when the queue is configured * as a delay queue or when a message has been sent with a delay parameter. *

    *
  • *
  • *

    * ApproximateNumberOfMessagesNotVisible – Returns the approximate number of messages that are * in flight. Messages are considered to be in flight if they have been sent to a client but have not * yet been deleted or have not yet reached the end of their visibility window. *

    *
  • *
  • *

    * CreatedTimestamp – Returns the time when the queue was created in seconds (epoch time). *

    *
  • *
  • *

    * DelaySeconds – Returns the default delay on the queue in seconds. *

    *
  • *
  • *

    * LastModifiedTimestamp – Returns the time when the queue was last changed in seconds (epoch time). *

    *
  • *
  • *

    * MaximumMessageSize – Returns the limit of how many bytes a message can contain before Amazon * SQS rejects it. *

    *
  • *
  • *

    * MessageRetentionPeriod – Returns the length of time, in seconds, for which Amazon SQS retains * a message. When you change a queue's attributes, the change can take up to 60 seconds for most of the * attributes to propagate throughout the Amazon SQS system. Changes made to the * MessageRetentionPeriod attribute can take up to 15 minutes and will impact existing messages * in the queue potentially causing them to be expired and deleted if the MessageRetentionPeriod * is reduced below the age of existing messages. *

    *
  • *
  • *

    * Policy – Returns the policy of the queue. *

    *
  • *
  • *

    * QueueArn – Returns the Amazon resource name (ARN) of the queue. *

    *
  • *
  • *

    * ReceiveMessageWaitTimeSeconds – Returns the length of time, in seconds, for which the * ReceiveMessage action waits for a message to arrive. *

    *
  • *
  • *

    * VisibilityTimeout – Returns the visibility timeout for the queue. For more information about * the visibility timeout, see Visibility Timeout in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to dead-letter queues: *

*
    *
  • *

    * RedrivePolicy – The string that includes the parameters for the dead-letter queue * functionality of the source queue as a JSON object. The parameters are as follows: *

    *
      *
    • *

      * deadLetterTargetArn – The Amazon Resource Name (ARN) of the dead-letter queue to which Amazon * SQS moves messages after the value of maxReceiveCount is exceeded. *

      *
    • *
    • *

      * maxReceiveCount – The number of times a message is delivered to the source queue before being * moved to the dead-letter queue. Default: 10. When the ReceiveCount for a message exceeds the * maxReceiveCount for a queue, Amazon SQS moves the message to the dead-letter-queue. *

      *
    • *
    *
  • *
  • *

    * RedriveAllowPolicy – The string that includes the parameters for the permissions for the * dead-letter queue redrive permission and which source queues can specify dead-letter queues as a JSON * object. The parameters are as follows: *

    *
      *
    • *

      * redrivePermission – The permission type that defines which source queues can specify the * current queue as the dead-letter queue. Valid values are: *

      *
        *
      • *

        * allowAll – (Default) Any source queues in this Amazon Web Services account in the same Region * can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * denyAll – No source queues can specify this queue as the dead-letter queue. *

        *
      • *
      • *

        * byQueue – Only queues specified by the sourceQueueArns parameter can specify * this queue as the dead-letter queue. *

        *
      • *
      *
    • *
    • *

      * sourceQueueArns – The Amazon Resource Names (ARN)s of the source queues that can specify this * queue as the dead-letter queue and redrive messages. You can specify this parameter only when the * redrivePermission parameter is set to byQueue. You can specify up to 10 source * queue ARNs. To allow more than 10 source queues to specify dead-letter queues, set the * redrivePermission parameter to allowAll. *

      *
    • *
    *
  • *
* *

* 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. *

*
*

* The following attributes apply only to server-side-encryption: *

*
    *
  • *

    * KmsMasterKeyId – Returns the ID of an Amazon Web Services managed customer master key (CMK) * for Amazon SQS or a custom CMK. For more information, see Key Terms. *

    *
  • *
  • *

    * KmsDataKeyReusePeriodSeconds – Returns the length of time, in seconds, for which Amazon SQS * can reuse a data key to encrypt or decrypt messages before calling KMS again. For more information, see How Does the Data Key Reuse Period Work?. *

    *
  • *
  • *

    * SqsManagedSseEnabled – Returns information about whether the queue is using SSE-SQS * encryption using SQS owned encryption keys. Only one server-side encryption option is supported per queue * (for example, SSE-KMS or SSE-SQS). *

    *
  • *
*

* The following attributes apply only to FIFO * (first-in-first-out) queues: *

*
    *
  • *

    * FifoQueue – Returns information about whether the queue is FIFO. For more information, see FIFO queue logic in the Amazon SQS Developer Guide. *

    * *

    * To determine whether a queue is FIFO, you can check whether QueueName ends with the .fifo suffix. *

    *
  • *
  • *

    * ContentBasedDeduplication – Returns whether content-based deduplication is enabled for the * queue. For more information, see Exactly-once processing in the Amazon SQS Developer Guide. *

    *
  • *
*

* The following attributes apply only to high throughput for FIFO queues: *

*
    *
  • *

    * DeduplicationScope – Specifies whether message deduplication occurs at the message group or * queue level. Valid values are messageGroup and queue. *

    *
  • *
  • *

    * FifoThroughputLimit – Specifies whether the FIFO queue throughput quota applies to the entire * queue or per message group. Valid values are perQueue and perMessageGroupId. The * perMessageGroupId value is allowed only when the value for DeduplicationScope is * messageGroup. *

    *
  • *
*

* To enable high throughput for FIFO queues, do the following: *

*
    *
  • *

    * Set DeduplicationScope to messageGroup. *

    *
  • *
  • *

    * Set FifoThroughputLimit to perMessageGroupId. *

    *
  • *
*

* If you set these attributes to anything other than the values shown for enabling high throughput, normal * throughput is in effect and deduplication occurs as specified. *

*

* For information on throughput quotas, see Quotas related to messages in the Amazon SQS Developer Guide. * @return Returns a reference to this object so that method calls can be chained together. * @see QueueAttributeName */ public GetQueueAttributesRequest withAttributeNames(QueueAttributeName... attributeNames) { com.amazonaws.internal.SdkInternalList attributeNamesCopy = new com.amazonaws.internal.SdkInternalList(attributeNames.length); for (QueueAttributeName value : attributeNames) { attributeNamesCopy.add(value.toString()); } if (getAttributeNames() == null) { setAttributeNames(attributeNamesCopy); } else { getAttributeNames().addAll(attributeNamesCopy); } return this; } /** * Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be * redacted from this string using a placeholder value. * * @return A string representation of this object. * * @see java.lang.Object#toString() */ @Override public String toString() { StringBuilder sb = new StringBuilder(); sb.append("{"); if (getQueueUrl() != null) sb.append("QueueUrl: ").append(getQueueUrl()).append(","); if (getAttributeNames() != null) sb.append("AttributeNames: ").append(getAttributeNames()); sb.append("}"); return sb.toString(); } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (obj instanceof GetQueueAttributesRequest == false) return false; GetQueueAttributesRequest other = (GetQueueAttributesRequest) obj; if (other.getQueueUrl() == null ^ this.getQueueUrl() == null) return false; if (other.getQueueUrl() != null && other.getQueueUrl().equals(this.getQueueUrl()) == false) return false; if (other.getAttributeNames() == null ^ this.getAttributeNames() == null) return false; if (other.getAttributeNames() != null && other.getAttributeNames().equals(this.getAttributeNames()) == false) return false; return true; } @Override public int hashCode() { final int prime = 31; int hashCode = 1; hashCode = prime * hashCode + ((getQueueUrl() == null) ? 0 : getQueueUrl().hashCode()); hashCode = prime * hashCode + ((getAttributeNames() == null) ? 0 : getAttributeNames().hashCode()); return hashCode; } @Override public GetQueueAttributesRequest clone() { return (GetQueueAttributesRequest) super.clone(); } }





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