API - UI Handle pools with "-1" infinity slots.

[pierrejeambrun]

Body

The Pool db models accepts "-1" to specify unlimited slots on a pool.

If we currently try to do that on the API side, it will error and result in a 500.

This issue is to fix this behavior so the API can actually serialize and return pools with -1/infinity specified as slots. (same for create and patch).

Then when the backend returns -1 or infinity for those slots, update the UI to take it into account in the chats. (PoolSummary, PoolBar). (infinity should take over the graph)

Committer

• I acknowledge that I am a maintainer/committer of the Apache Airflow project.

[pierrejeambrun]

This can be split into backend and UI effort if necessary.

[KamranImaaz]

@pierrejeambrun I Would Like to work on it

[shubhamkoti]

@pierrejeambrun If it is okay, may I work on this PR? I am interested in this issue . It's my first Contribution and i have done all Local set up for this

[pierrejeambrun]

@KamranImaaz thanks for your interest, please go ahead. I just assigned you.

[pierrejeambrun]

@shubhamkoti To not duplicate the work here I'd suggest to work on a different issue.