@Marvin How do i make the prefect UI ask for input before executing the flow ?

To make the Prefect UI prompt for input before executing a flow, you can use Prefect's interactive workflow features. Specifically, you can pause or suspend a flow until it receives input from a user in the Prefect UI. This approach is often used in "human-in-the-loop" systems where additional information or confirmation is needed before proceeding. Here's a concise guide on how to achieve this: 1. Pause or Suspend the Flow: Use the

pause_flow_run

or

suspend_flow_run

functions to pause the flow execution. 2. Wait for Input: Utilize the

wait_for_input

parameter in these functions. This parameter can accept built-in types like

int

or

str

, collections like

List[int]

, or a

pydantic.BaseModel

subclass to ensure type-checked input. For more details, you can refer to the Prefect documentation on interactive workflows. This approach allows you to create workflows that can pause and wait for user input before continuing, which is perfect for scenarios where user intervention or approval is required.

@Marvin Can the wait_for_input be used for input of password.

The

wait_for_input

feature in Prefect is designed to pause a flow and wait for user input, but it doesn't explicitly mention handling sensitive inputs like passwords securely. However, Prefect provides a mechanism for managing secrets, which is more appropriate for handling sensitive data like passwords. For secure handling of passwords, consider using Prefect's secret management features. You can store sensitive information such as passwords in a secure block (e.g., AWS Secret) and access it programmatically within your flow. Here's an example of how you might approach this: 1. Store Password Securely: Use Prefect's secret management to store your password securely. This can be done through the Prefect UI by creating a secret block. 2. Access Password in Flow: Retrieve the password from the secret block within your flow, ensuring it is not exposed in logs or UI prompts. For more information on managing secrets in Prefect, you can refer to the Prefect documentation on secrets. In summary, while

wait_for_input

is useful for general user inputs, it's not ideal for passwords. Instead, leverage Prefect's secret management for secure handling of sensitive information.