Fix lambda function logic when all detections are filtered out

[SpecLad]

Motivation and context

Currently, if all detected shapes have labels that aren't mapped, then the mapping is not applied at all.

How has this been tested?

Manual testing.

Checklist

• I submit my changes into the develop branch
• I have created a changelog fragment
• [ ] I have updated the documentation accordingly
• I have added tests to cover my changes
• [ ] I have linked related issues (see GitHub docs)
• [ ] I have increased versions of npm packages if it is necessary
  (cvat-canvas,
  cvat-core,
  cvat-data and
  cvat-ui)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.

Summary by CodeRabbit

• Bug Fixes

  • Improved lambda function response handling to correctly filter out detections with unmapped labels.

• Tests

  • Added a new test case to validate handling of unmapped shapes in detector functions.

[coderabbitai]

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Walkthrough

The changes address a specific issue in the lambda function handling within the CVAT (Computer Vision Annotation Tool) application. The modification focuses on improving the filtering mechanism for detector functions, ensuring that only shapes with mapped labels are processed and returned. A new test case has been added to validate the behavior when all detected shapes have unmapped labels, resulting in an empty response.

Changes

File	Change Summary
cvat/apps/lambda_manager/tests/test_lambda.py	Added new test method test_api_v2_lambda_functions_create_detector_all_shapes_unmapped to verify handling of unmapped shapes
cvat/apps/lambda_manager/views.py	Enhanced response filtering for detector functions to process only shapes with mapped labels
changelog.d/20250113_122208_roman_filter_out_all_detections.md	Documented the fix for lambda function behavior with unmapped shapes

Sequence Diagram

sequenceDiagram
    participant Client
    participant LambdaFunction
    participant Detector
    participant ResponseFilter

    Client->>LambdaFunction: Invoke detector
    LambdaFunction->>Detector: Request detection
    Detector-->>LambdaFunction: Return all detections
    LambdaFunction->>ResponseFilter: Filter detections by mapping
    ResponseFilter-->>LambdaFunction: Return filtered detections
    LambdaFunction-->>Client: Send filtered response

Loading

Poem

🐰 In the realm of lambda's might,
Where shapes dance in detection's light,
No label left behind, no shape astray,
Our filter works its magic today!
Mapping shapes with rabbit's grace,
Code hops forward with a smile on its face! 🌟

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.85%. Comparing base (42bc345) to head (3a3d523).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #8931   +/-   ##
========================================
  Coverage    73.85%   73.85%           
========================================
  Files          412      412           
  Lines        44262    44258    -4     
  Branches      3993     3993           
========================================
- Hits         32688    32686    -2     
+ Misses       11574    11572    -2     

Components	Coverage Δ
cvat-ui	78.39% <ø> (-0.03%)	⬇️
cvat-server	70.00% <100.00%> (+0.02%)	⬆️

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud