@Marvin i want to trigger prefect job when my s3 export completes. I want event based trigger

To trigger a Prefect job when your S3 export completes, you can use event-based triggers provided by Prefect's automation capabilities. Here's a summary of what you need to do: ### Steps 1. Create a Flow: Define your Prefect flow that you want to trigger. 2. Setup S3 Event Notifications: Configure your S3 bucket to send event notifications to a service like AWS Lambda, SNS, or SQS. 3. Trigger Prefect from Event: Use the event notification to invoke a Prefect flow. For instance, an AWS Lambda function can make an API call to Prefect to start a flow run. ### Example Refer to the documentation on Prefect automations where composite triggers are used: *https://docs.prefect.io/latest/concepts/automations/* For more examples and how to tie these together, here is a related GitHub issue discussing event triggers in depth: *https://github.com/PrefectHQ/prefect/issues/12668* Consider using AWS Lambda in conjunction with Prefect's API to trigger the flow upon receiving the S3 event notification. Do ensure you have proper IAM roles and permissions configured. If you have any further questions, feel free to ask!

the above will definitely work but you can also check out webhooks for this @Marvin can you link some docs on something like •

curl <https://api.prefect.cloud/hooks/xxx>

somehow from aws ◦ this creates an event in the prefect ecosystem • create a deployment with a trigger so that deployment will run when a matching event is received

Setting up a webhook to trigger a Prefect deployment based on an S3 export completion involves a few steps: 1. Create a Webhook in Prefect Cloud: This webhook will be the endpoint that AWS will notify when the S3 export completes. 2. Configure AWS to Call the Webhook: Set up an AWS Lambda function that gets triggered by the S3 event and calls the Prefect webhook. 3. Create a Deployment with a Trigger: Configure the Prefect deployment to run when it receives the webhook event. ### Step-by-Step Instructions: 1. Create a Webhook in Prefect Cloud: Follow the Prefect documentation to create a webhook. This will generate a unique webhook URL. URL: *https://docs.prefect.io/latest/guides/webhooks/* 2. AWS Lambda Function to Call Webhook: Set up an AWS Lambda function that gets triggered by the S3 event and sends a POST request to the Prefect webhook URL using

curl

. Example Lambda Function:

python
   import json
   import urllib3

   def lambda_handler(event, context):
       http = urllib3.PoolManager()
       webhook_url = '<https://api.prefect.cloud/hooks/YourWebhookURL>'
       
       response = http.request('POST', webhook_url, headers={'Content-Type': 'application/json'}, body=json.dumps(event))
       
       return {
           'statusCode': 200,
           'body': response.data
       }

3. Create a Deployment with Trigger: You need to define a deployment that runs when a specific event is received. Use the Prefect CLI or UI to set up this deployment with the required trigger. Example Command to Create Deployment with Trigger:

shell
   prefect deploy -n my-deployment --trigger '{ 
       "enabled": true, 
       "match": {"prefect.resource.id": "prefect.flow-run.*"}, 
       "expect": ["prefect.flow-run.Completed"] }'

### References: - Creating Webhooks: *https://docs.prefect.io/latest/guides/webhooks/* - Automations and Triggers Documentation: *https://docs.prefect.io/latest/concepts/automations/* ### GitHub Issue Mentioning Webhooks and Triggers: - Automate option in Webhooks menu: *https://github.com/PrefectHQ/prefect/issues/13197* This setup ensures that your Prefect job is triggered automatically when your S3 export completes, leveraging AWS and Prefect's webhook capabilities. If you have further queries, feel free to ask!