Hi there hopefully a quick question about Prefect 2 run cont

Question

Hi there hopefully a quick question about Prefect 2 run context and specifically getting a dict of parameters

Billy McMonagle · Answer

Here is a simple flow showing what I m trying to do basically provide a status update about the flow to Slack including various pieces of metadata including input parameters ``` flow async def show parameters foo=1 bar=2 flow run context = FlowRunContext get parameters = flow run context flow run parameters await send incoming webhook message fn slack webhook=SlackWebhook url=SLACK WEBHOOK URL text=str parameters ``` The parameters are definitely passed into the flow but aren t available from the context When I run a similar flow locally I am able to get the parameters with this method Is it something to do with the execution environment

Mason Menges · Answer

I believe this is likely related to result persistence and how that s configured if it s not enabled or if it s not configured to store the results then we aren t persisting the results of a task within the state at least not in a way that it s retrievable from the api this Includes parameters from my understanding locally when you run a flow the results are persisted on your local machine and therefore still accessible Not 100 sure on this but it s the first thing that comes to mind as to why there might be a difference for a local run versus a cloud run

Billy McMonagle · Answer

I see that is interesting I tried ` flow persist result=True` and it didn t work I ll dig into it a bit more but it s surprising to me that these would be related Everything is happening inside a single kubernetes job nothing is being distributed It s not really worth messing around with persistance this is a relatively small issue and I m sure I can work around it

Billy McMonagle · Answer

Interesting wrinkle if I invoke a flow run with non default parameters they do become available in the context and are included in the Slack message