To set the `ReceiveMessageWaitTimeSeconds` parameter in Python using the Boto3 library, you can use the `set_queue_attributes` method of the SQS client. Here is an example:
python
import boto3
# Create SQS client
sqs = boto3.client('sqs')
# Set the queue URL
queue_url = 'https://sqs.us-east-1.amazonaws.com/123456789012/MyQueue'
# Set the attributes
attributes = {
'ReceiveMessageWaitTimeSeconds': '20'
}
# Set the queue attributes
sqs.set_queue_attributes(
QueueUrl=queue_url,
Attributes=attributes
)
print("Queue attributes updated.")
This code sets the `ReceiveMessageWaitTimeSeconds` attribute to 20 seconds for the specified SQS queue. This enables long polling for the queue, allowing the `ReceiveMessage` action to wait for up to 20 seconds for a message to become available before returning an empty response[1][2].
Example with Long Polling
Here is an example of how to use long polling when receiving messages from an SQS queue:
python
import boto3
# Create SQS client
sqs = boto3.client('sqs')
# Set the queue URL
queue_url = 'https://sqs.us-east-1.amazonaws.com/123456789012/MyQueue'
# Receive messages with long polling
response = sqs.receive_message(
QueueUrl=queue_url,
AttributeNames=['SentTimestamp'],
MaxNumberOfMessages=1,
MessageAttributeNames=['All'],
WaitTimeSeconds=20
)
print(response)
This code receives messages from the specified SQS queue with long polling enabled. The `WaitTimeSeconds` parameter is set to 20 seconds, which means the `ReceiveMessage` action will wait for up to 20 seconds for a message to become available before returning an empty response[1][2].
Example with Boto3
Here is an example of how to use Boto3 to set the `ReceiveMessageWaitTimeSeconds` attribute and receive messages with long polling:
python
import boto3
# Create SQS client
sqs = boto3.client('sqs')
# Set the queue URL
queue_url = 'https://sqs.us-east-1.amazonaws.com/123456789012/MyQueue'
# Set the attributes
attributes = {
'ReceiveMessageWaitTimeSeconds': '20'
}
# Set the queue attributes
sqs.set_queue_attributes(
QueueUrl=queue_url,
Attributes=attributes
)
# Receive messages with long polling
response = sqs.receive_message(
QueueUrl=queue_url,
AttributeNames=['SentTimestamp'],
MaxNumberOfMessages=1,
MessageAttributeNames=['All'],
WaitTimeSeconds=20
)
print(response)
This code sets the `ReceiveMessageWaitTimeSeconds` attribute to 20 seconds for the specified SQS queue and then receives messages from the queue with long polling enabled[1][2].
Citations:[1] https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_ReceiveMessage.html
[2] https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_SetQueueAttributes.html
[3] https://camel.apache.org/components/4.4.x/aws2-sqs-component.html
[4] https://hevodata.com/learn/sqs-receivemessage/
[5] https://boto3.amazonaws.com/v1/documentation/api/1.19.0/guide/sqs-example-long-polling.html