Hey guys I have following dummy code which saves the values

Question

Hey guys I have following dummy code which saves the values to the database and returns a value to the client I use prefect flow and task Change the code so the flow url upload and url upload will not wait for the long task save to db The task save to db should be just pushed to some queue and the function flow url upload should not wait for its execution Is there some way ```import fastapi from prefect import flow task import time task def save to db a b time sleep 100 print Saving to db print Saved to DB flow def flow my endpoint a b save to db a b suma = a + b return suma suma router post csv url async def my endpoint a b return flow my endpoint a b ```

Deceivious · Answer

Isnt this basically the same as <https prefect community slack com archives CL09KU1K7 p1680700602145139>

Deceivious · Answer

if ur task was converted into a subflow

Patrik Fejda · Answer

Maybe it would solve the issue but how can I run the code with this deployment

Deceivious · Answer

`prefect deployments run deployment`

Patrik Fejda · Answer

If I get it correctly you suggest that the save to db task should be transfered to a flow which will be created as a deployment and this deployment can be called without waiting for the flow to be executed right

Deceivious · Answer

I am learning it myself right now But from what i know `task` runs within the context of a `flow` A task cannot persist outside its parent flow context Because you want ur flow to not be dependent on the `save to db` task which is not possible you could convert the `save to db` to a different deployed flow and trigger the deployment from your `flow my endpoint` flow

Patrik Fejda · Answer

and how can I deploy this flow ``` flow def save to db a b time sleep 100 print Saving to db print Saved to DB ```

Deceivious · Answer

``` from prefect deployments import Deployment Deployment build from flow save to db name= NAME FOR DEPLOYMENT apply ```

Patrik Fejda · Answer

Okay and now I should run it like this right ```def flow my endpoint a b run deployment name= NAME FOR DEPLOYMENT parameter= a a b b return suma suma ```

Deceivious · Answer

Yes

Patrik Fejda · Answer

By any change do you know how can this be solved ``` File app src routers connector py line 573 in lt module gt Deployment build from flow data analysis name= NAME FOR DEPLOYMENT apply File pydantic main py line 342 in pydantic main BaseModel init pydantic error wrappers ValidationError 1 validation error for Deployment name field required type=value error missing ```

Deceivious · Answer

Maybe it s Deployment build from flow

Deceivious · Answer

No initialization on the deployment class

Patrik Fejda · Answer

Yeah lt I get it now Have you tried deploying from the code I tried ```dep = Deployment build from flow data analysis name= NAME FOR DEPLOYMENT dep apply ``` And got this error ```File app src routers connector py line 576 in lt module gt dep apply AttributeError coroutine object has no attribute apply ```

Deceivious · Answer

Yes all my cicd uses it

Deceivious · Answer

Maybe u need to await the build from flow M not on my workstation so i can t provide the codes

Patrik Fejda · Answer

Can this be ran like this ```import fastapi from prefect import flow task import time flow def save to db a b time sleep 100 print Saving to db print Saved to DB Deployment build from flow save to db name= NAME FOR DEPLOYMENT apply flow def flow my endpoint a b save to db a b suma = a + b return suma suma router post csv url async def my endpoint a b return flow my endpoint a b ```

Patrik Fejda · Answer

this works for you

Deceivious · Answer

Don t bundle the deployment code with ur main code You should only deploy once when the code is changed or deployed for the first time