@Marvin How an external system can launch a deployment on Prefect Cloud?

To launch a deployment on Prefect Cloud from an external system, you can use the Prefect API. Here are the key details and relevant documentation: 1. Prefect 2.x: - Automations: Prefect supports creating automations that can trigger deployments based on specific events. - Documentation: Automations in Prefect 2.x 2. Prefect 3.x: - Deployment Triggers: Prefect provides deployment triggers which link specific deployments to event-driven automation. - Documentation: Automations and Triggers in Prefect 3.x - CI/CD Integration: You can also integrate Prefect deployments with CI/CD pipelines such as GitHub Actions. - Documentation: CI/CD Deployments in Prefect 3.x For initiating the deployment via API, here is a simplified example using Prefect’s Python client:

python
from prefect.client import OrionClient
import asyncio

async def trigger_deployment(deployment_id, parameters):
    async with OrionClient() as client:
        await client.create_flow_run_from_deployment(deployment_id=deployment_id, parameters=parameters)

deployment_id = "your_deployment_id_here"
parameters = {} # any parameters needed for the deployment

asyncio.run(trigger_deployment(deployment_id, parameters))

Replace

"your_deployment_id_here"

with the actual deployment ID you wish to trigger. The

parameters

dictionary contains any parameters required by your deployment. For more detailed information based on your Prefect version, check out the links provided. If you need further assistance or have specific questions regarding the example, feel free to ask!

@Marvin How can my webhook automate a deployment to run via Prefect Cloud with Prefect v2?

To automate a deployment on Prefect Cloud using a webhook with Prefect v2, you can follow this process: 1. Set Up Webhook: Create a webhook to send events to Prefect Cloud. 2. Create Custom Events: Associate these webhook events with Prefect's custom events. 3. Automate Deployment: Use Prefect's automation features to trigger deployments in response to these events. Here's a step-by-step example: ### Step 1: Create a Webhook Your external system needs to send a POST request to a Prefect Cloud webhook endpoint whenever an event occurs. Here's a sample curl command to send event data to Prefect Cloud:

sh
curl -X POST <https://api.prefect.cloud/hooks/YOUR_WEBHOOK_ID> \
-d "model_id=adhoc_model" \
-d "run_count=10" \
-d "friendly_name=test_input"

### Step 2: Define the Event Payload Define the structure of the events that you will send to the webhook:

json
{
  "event": "model-update",
  "resource": {
    "prefect.resource.id": "product.models.{{ body.model_id }}",
    "prefect.resource.name": "{{ body.friendly_name }}",
    "run_count": "{{body.run_count}}"
  }
}

This JSON specifies that the webhook will create dynamic events using the provided data. ### Step 3: Automate Deployment in Prefect Cloud In Prefect Cloud, configure an automation that will trigger a deployment based on the custom event created by the webhook. You can do this through the Prefect UI by following these steps: 1. Go to the Automations section in the Prefect UI. 2. Create a new automation and specify the custom event (e.g.,

model-update

) as the trigger. 3. Define the deployment to be triggered by this event in your automation configuration. For more detailed information, refer to Prefect's automations documentation: - Automations Guide: Automations in Prefect v2 - Event Triggers: Event Triggers in Prefect v2 If you have any other questions or need further assistance, feel free to ask!