tools: add --auto flag to replay and cabana for loading routes from auto source

[deanlee]

Added the --auto flag to cabana and replay, allowing routes to be loaded from the most suitable source based on logreader.py's auto-sourcing logic.

Usage example for loading a specified route with auto-sourcing:

cabana --auto <route>
replay --auto <route>

[greatgitsby]

could this instead be default behavior instead of behind a flag?

[sshane]

I agree, can we replace the C++ implementation of finding sources with this?

[deanlee]

It's better to hide this feature behind a flag for now. While --auto offers a convenient option, it doesn’t replace the default route-loading behavior in replay&cabana.

The current auto-sourcing implementation has significant limitations. It only loads rlogs and fails to manage non-contiguous segments, which undermines its compatibility with key replay and Cabana features. These require smooth transitions between rlog/qlog, HEVC/qcam, and reliable handling of segment gaps.

Additionally, the auto-sourcing process is inefficient. It validates every source file with file_exists, triggering excessive HTTP calls that slow down startup—often taking more than 10 seconds on my laptop. I've also encountered frequent DNS errors, even when using a VPN.

The --auto flag should be removed once these issues and limitations are resolved.

[sshane]

Using /a handles missing rlogs in the middle of segments btw

[sshane]

Getting

  File "/home/batman/openpilot/tools/cabana/../lib/logreader.py", line 240, in auto_source
    raise LogsUnavailable("auto_source could not find any valid source, exceptions for sources:\n  - " +
LogsUnavailable: auto_source could not find any valid source, exceptions for sources:
  - internal_source: Exception('unable to get max_segment_number. ensure you have access to this route or the route is public.')
  - internal_source_zst: Exception('unable to get max_segment_number. ensure you have access to this route or the route is public.')
  - openpilotci_source: Exception('unable to get max_segment_number. ensure you have access to this route or the route is public.')
  - openpilotci_source_zst: Exception('unable to get max_segment_number. ensure you have access to this route or the route is public.')
  - comma_api_source: UnauthorizedError('Unauthorized. Authenticate with tools/lib/auth.py')
  - comma_car_segments_source: Exception('unable to get max_segment_number. ensure you have access to this route or the route is public.')
  - testing_closet_source: Exception('Internal source not available')

but I'm authenticated

[deanlee]

@sshane fixed. cabana use OPENPILOT_PREFIX to run multiple instances simultaneously. This was causing the path to auth.json to be prefixed, making it unreadable.

[sshane]

Tried it with a route from test_models:

batman@workstation-shane:~/openpilot$ cabana 0c94aa1e1296d7c6/2021-05-05--19-48-37/2 --auto
active services: can, carParams, driverEncodeIdx, roadEncodeIdx, wideRoadEncodeIdx
loading route 
terminate called after throwing an instance of 'std::out_of_range'
  what():  basic_string::substr: __pos (which is 5) > this->size() (which is 4)
Aborted (core dumped)