[Bug]: Regression in `/beacons` endpoints: `BeaconState.model_validate(TortoiseModel)` raises 500 when DB has rows

[jmpereztorres]

Before proceeding, is there an existing issue or discussion for this?

• I have done a search for similar issues and discussions.

OS and version

macOS (local dev), running Kubernetes on Colima + kind

Open-RMF installation type

Docker

Other Open-RMF installation methods

rmf-web/api-server running in container on kind (local test stack)

Open-RMF version or commit hash

rmf-web commit: f33e755 Suspected regression introduced around: 88ab5b5 (routes/beacons.py migration from from_tortoise_orm to model_validate on ORM objects)

ROS distribution

Rolling

ROS installation type

Others

Other ROS installation methods

Containerized runtime inside api-server image

Package or library, if applicable

api-server (routes/beacons.py)

Description of the bug

/beacons endpoints return 500 Internal Server Error when the beaconstate table contains rows.

This appears to be a regression in packages/api-server/api_server/routes/beacons.py, where beacon ORM objects are passed directly to BeaconState.model_validate(...). With real DB rows, this raises a Pydantic validation error.

Affected endpoints:

• GET /beacons
• GET /beacons/{beacon_id}

Steps to reproduce the bug

1. Run rmf-web api-server with DB backend (Docker deployment is fine).
2. Insert at least one row into beaconstate, for example:
   • id='beacon_1'
   • online=true
   • category='elevator'
   • activated=true
   • level='L1'
3. Call:
   • GET /beacons
   • GET /beacons/beacon_1

Observed result:

• both endpoints return 500.

Relevant runtime error:
ValidationError: Input should be a valid dictionary or instance of BeaconState [input_value=<BeaconState: beacon_1>]

Expected behavior

• GET /beacons should return 200 with a list of beacons.
• GET /beacons/{beacon_id} should return 200 with the beacon payload.
• No server-side validation exception should occur for valid rows in beaconstate.

Actual behavior

When the beaconstate table has at least one row:

• GET /beacons returns 500 Internal Server Error
• GET /beacons/{beacon_id} returns 500 Internal Server Error

Observed traceback (api-server logs):
pydantic_core._pydantic_core.ValidationError: Input should be a valid dictionary or instance of BeaconState [input_value=<BeaconState: beacon_1>, input_type=BeaconState]

This happens in:
packages/api-server/api_server/routes/beacons.py
when calling:
BeaconState.model_validate(db_beacon_row)

Additional information or screenshots

• Affected file:
  https://github.com/open-rmf/rmf-web/blob/main/packages/api-server/api_server/routes/beacons.py
• Likely regression introduced around:
  88ab5b59e7d93661c7625d4b0ccec08ea36d182e
• Tested affected state on:
  f33e755b4d7c111f3b31ecf53e24ba876b9fb595
• Historical note:
  older implementation (fd92cb32...) used Tortoise-to-Pydantic conversion (from_tortoise_orm) and did not have this failure mode.

[aaronchongth]

Thanks for flagging this, #1074 should fix it