Hi, I'm trying to find out how I can set up a flow...
# prefect-communitys
Sander
05/10/2022, 7:53 PMHi, I'm trying to find out how I can set up a flow that depends on some other flow , but where the other flow is defined elsewhere say in a separate repo. Can I for example reference the flow id in the dependent flow? Or how should I do that?
k
Kevin Kho
05/10/2022, 7:55 PM
It would be easiest if you had a parent flow that triggered the children flows so that you have the flow id. Have you seen this page?
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s
Sander
05/10/2022, 7:58 PMThis collects the state of the flow that needs to run first?
flow_a = create_flow_run(flow_name="A", project_name="examples")Sander
05/10/2022, 7:58 PM?
Sander
05/10/2022, 8:04 PMMaybe a different but related question: if I have a continuous loop that stores some state and some other process picks up that state in a separate flow. Is there a way to automatically check how old the state is of the first flow? Ideally I would like to know that the state of the first process is up-to-date (definition depends a bit on the individual case)
Sander
05/10/2022, 8:12 PM@Kevin Kho I think I missed that page. Thanks!
k
Kevin Kho
05/10/2022, 8:26 PM
flow_a will be an id there. not a state. you need wait_for_flow_run to get the state. There is an argument like raise_final_state
Kevin Kho
05/10/2022, 8:27 PM
maybe you can write the update time of the state in the KV Store ?
s
Sander
05/10/2022, 8:33 PMLet me think about that. Thanks!
Sander
05/10/2022, 8:34 PMI can't use the completed time of the Loop task (referring to the prefect 1 setup atm)
k
Kevin Kho
05/10/2022, 8:39 PM
You can if you query it from the GraphQL API
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