@Marvin When I am trying to wrap flow.deploy stuff in a flask wrapper api, it just keeps processing and no return is there... Is this some kind of blocking ? It works fine when executed outside of flask...

It seems like there isn't a specific documented issue with

flow.deploy

being blocking when used within a Flask application. However, the behavior you're experiencing could be due to the way Flask handles requests, especially if

flow.deploy

is executing synchronously and waiting for a process that blocks the request from returning. Here are some general suggestions to address this: 1. Asynchronous Execution: Ensure that the deployment process is running asynchronously. You might want to use a task queue like Celery or a background worker to handle the deployment process so that it doesn't block the main Flask thread. 2. Timeouts and Background Processing: Consider setting timeouts or offloading the process to a background worker. Flask's default synchronous nature can lead to blocking if a long-running process is initiated within a request context. 3. Use Prefect's API: Since Prefect deployments expose an API, you might want to interact with Prefect's API directly to trigger deployments asynchronously. For more details on Prefect deployments, you can check their deployment documentation. If the issue persists, consider exploring Flask's documentation for handling long-running processes. If you have specific code snippets or configurations, they might provide more insight into the issue.

@Marvin Can you help me with prefect api and it's payload where I can create a flow and deployment for processing a shell command on my worker pool and also add a schedule

To create a flow and deployment using Prefect's API for executing a shell command on your worker pool with a schedule, follow these steps: 1. Define Your Flow: First, create a flow that defines the shell command you want to execute. 2. Create a Deployment: Use Prefect's deployment capabilities to schedule and manage your flow execution. Here's a basic outline of how you can achieve this:

python
from prefect import flow, task
from prefect.deployments import Deployment
from prefect.infrastructure import Process
from prefect.schedules import CronSchedule

@task
def run_shell_command():
    import subprocess
    result = subprocess.run(["your-shell-command"], capture_output=True, text=True)
    print(result.stdout)

@flow
def my_flow():
    run_shell_command()

# Define a schedule using cron syntax
schedule = CronSchedule(cron="0 9 * * *", timezone="America/Chicago")

# Create a deployment for the flow
deployment = Deployment.build_from_flow(
    flow=my_flow,
    name="My Shell Command Deployment",
    schedule=schedule,
    infrastructure=Process()  # Use Process infrastructure or your specific worker pool
)

deployment.apply()

### Key Points: - Flow and Task: Define a Prefect flow and task to wrap the shell command execution. - Scheduling: Use

CronSchedule

to define when the flow should run. In this example, it runs daily at 9 AM. - Deployment: Create a deployment with the specified schedule and infrastructure. ### Useful Links: - Prefect Deployment Documentation - Adding Schedules to Deployments - Executing Shell Commands Adjust the shell command and schedule according to your needs. If you're using a specific worker pool, make sure to configure it accordingly.