Delete a flow

[neumann-nico]

Hi there,

Is there a way to delete a flow using Python?
In the Prefect Cloud UI you can simply go to the flow and click on delete.

I am using prefect 1.0.0

from prefect import Flow

flow = Flow(...)
flow_id = flow.register(...)  # flow is registered now e.g. in prefect cloud 
flow.run(...)

# ...

delete_flow(flow_id)  # is something like this possible?

[zanieb]

You can make a request to the GraphQL API

mutation {
  delete_flow(input: {flow_id: "..."}) {
    success
  }
}

e.g.

from prefect.client import Client

flow_id = "..."

client = Client()
client.graphql(
    """
    mutation {
    delete_flow(input: {flow_id: "%s"}) {
        success
    }
    }
    """ % flow_id
)

[lucascr91]

One can also delete all versions of a given flow using delete_flow_group instead of delete_flow. In this case though, one needs to use the flow_group_id instead of flow_id.

[mzayer-coveo]

How can you retrieve the flow_id or flow_group_id? In my code repository, I only have flow names. (In my infra code, I want to ensure when I remove a flow script from my codebase, it gets deleted on Prefect Cloud)

[zanieb]

from prefect.backend import FlowView

flow = FlowView.from_flow_name("your-name")
print(flow.flow_id)

[KayJey-Krayen]

This does not seem to be working in prefect 2.0
There is not prefect.backend ..
Is there an alternative for this in prefect 2.0 ?

[zanieb]

Hi! We have not yet exposed a method in the OrionClient to delete a flow in 2.0. Feel free to contribute the change or open an issue to track it.

You can make requests to to the API though, https://docs.prefect.io/api-ref/rest-api/#/Flows/delete_flow_flows__id__delete

[neumann-nico]

@madkinsz thanks that works!