@Marvin how can I trigger a flow run from receiving a SQS message?

To trigger a Prefect flow run from an AWS SQS message, you'll need to integrate AWS SQS with Prefect using a work pool and worker setup. Here’s a high-level approach: 1. Set Up AWS SQS: Ensure you have an SQS queue set up in your AWS account. You will need this to receive messages that will trigger your flow. 2. Configure Prefect Work Pool: Create a work pool in Prefect, which can be of type ECS if you prefer using AWS infrastructure. This involves setting up an ECS cluster and configuring a worker to poll the work pool for tasks. For detailed steps, refer to the Prefect ECS Guide. 3. Write a Listener Script: Develop a script that listens to the SQS queue for messages. When a message is received, it should use the Prefect API to trigger a flow run. You can use the

prefect.client.get_client

method to interact with Prefect programmatically. 4. Deploy and Test: Deploy your listener script in an environment where it can continuously monitor the SQS queue, such as an AWS Lambda function or an EC2 instance. This setup leverages AWS services to handle message queuing and Prefect’s infrastructure capabilities to manage flow executions. If you prefer serverless infrastructure, you can explore further serverless deployment examples. Unfortunately, the specific integration of SQS as a trigger isn't detailed in the Prefect documentation, but the described method is a common approach for integrating message queues with Prefect.

@Marvin can I do that using a prefect automation? I'd rather not have to create that listener

Prefect's automation capabilities allow you to trigger actions based on specific events, but they don't natively support AWS SQS as an event source. Automations in Prefect are typically used for internal Prefect events, like flow run state changes or deployment status updates. Here's a brief overview of what Prefect automations can do: - Trigger on Events: Automations can be triggered by events such as flow run state changes, deployment status, work pool status, and custom event triggers. - Actions: When triggered, automations can perform actions like running a deployment, cancelling a flow run, or pausing/resuming schedules. For your specific use case of triggering a flow from an SQS message, you would still need an external mechanism to translate SQS messages into a Prefect event or action. This typically involves a listener or a bridge service that can interpret SQS messages and invoke the Prefect API to trigger a flow run. For more details on Prefect automations, you can refer to the Prefect Automations Documentation. If avoiding a listener is crucial, consider exploring AWS Lambda or other AWS services that can bridge SQS messages to Prefect's API, albeit indirectly.