forked from phoenix-oss/llama-stack-mirror
99f331f5c8
# What does this PR do? **Why** - When AgentConfig has no `input_shields` / `output_shields` defined, we still outputs a shield_call step with violation=None. This is impossible to distinguish the case b/w (1) no violation from running shields v.s. (2) no shields call **What** - We should not have a shield_call step when no `input_shields` / `output_shields` are defined. - Also removes a never reached try/catch code block in agent loop. `run_multiple_shields` is never called in the try block (verified by stacktrace print) **Side Note** - pre-commit fix ## Test Plan Tested w/ DirectClient via: https://gist.github.com/yanxi0830/b48f2a53b6f5391b9ff1e39992bc05b3 **No Shields** <img width="858" alt="image" src="https://github.com/user-attachments/assets/67319370-329f-4954-bd16-d21ce54c6ebf" /> **With Input + Output Shields** <img width="854" alt="image" src="https://github.com/user-attachments/assets/75ab1bee-3ba9-4549-ab51-23210be83da7" /> **Input Shields Only** <img width="858" alt="image" src="https://github.com/user-attachments/assets/1897206b-13dd-4ea5-92c2-b39bf68e9286" /> E2E pytest ``` LLAMA_STACK_BASE_URL=http://localhost:5000 pytest -v ./tests/client-sdk/agents/test_agents.py ``` ## Sources Please link relevant resources if necessary. ## Before submitting - [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case). - [ ] Ran pre-commit to handle lint / formatting issues. - [ ] Read the [contributor guideline](https://github.com/meta-llama/llama-stack/blob/main/CONTRIBUTING.md), Pull Request section? - [ ] Updated relevant documentation. - [ ] Wrote necessary unit or integration tests. |
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