Created
February 29, 2024 07:49
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SQS messages processing using long polling, it a very lightweight alternative for Celery
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| import json | |
| import threading | |
| import boto3 | |
| from configurations.config_store import Config | |
| from src.routes.frontapp.tasks import ( | |
| add_tags_to_conversation, | |
| reply_to_front_message, | |
| ) | |
| from src.utils.aws import get_queue_url_by_name | |
| sqs = boto3.client("sqs", region_name=Config.AWS_REGION) | |
| message_handler_map = { | |
| reply_to_front_message.__name__: reply_to_front_message, | |
| add_tags_to_conversation.__name__: add_tags_to_conversation, | |
| } | |
| def process_and_delete_message(message: dict, queue_url: str): | |
| message_body = json.loads(message["Body"]) | |
| function_name = message_body["handler_function"] | |
| payload = message_body["payload"] | |
| # actual processing | |
| message_handler_map[function_name](payload) | |
| sqs.delete_message(QueueUrl=queue_url, ReceiptHandle=message["ReceiptHandle"]) | |
| def long_poll_sqs(): | |
| queue_url = get_queue_url_by_name(Config.FRONTAPP_QUEUE, sqs) | |
| while True: | |
| response = sqs.receive_message( | |
| QueueUrl=queue_url, | |
| MaxNumberOfMessages=10, | |
| WaitTimeSeconds=20, | |
| ) | |
| messages = response.get("Messages", []) | |
| for message in messages: | |
| threading.Thread( | |
| target=process_and_delete_message, args=(message, queue_url) | |
| ).start() |
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