feat: Governance runtime implementation#899
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Pull request overview
Adds a LangChain/LangGraph governance integration layer to uipath-langchain, wiring UiPath’s governance evaluator into LangChain callbacks and exposing registration via an entry point so uipath-runtime can discover the adapter.
Changes:
- Introduces a
LangChainAdapter+ governed proxy wrapper and a callback handler that callsEvaluatorProtocolhooks for model/tool events. - Adds governance adapter registration (
uipath.governance.adaptersentry point) with import-time idempotent self-registration. - Updates dependency/lock configuration to pull in updated
uipath-coreand a dev/test build ofuipath-runtime(currently with non-portable lockfile sources).
Reviewed changes
Copilot reviewed 3 out of 4 changed files in this pull request and generated 9 comments.
| File | Description |
|---|---|
src/uipath_langchain/governance/adapter.py |
Implements the LangChain/LangGraph adapter, wrapper, and callback handler that triggers governance evaluations. |
src/uipath_langchain/governance/__init__.py |
Registers the governance adapter on import and exposes an entry-point registration function. |
pyproject.toml |
Adds governance adapter entry point; bumps uipath-core; pins uipath-runtime to a dev build and adds a uv TestPyPI source override. |
uv.lock |
Updates locked dependencies, but currently includes a machine-local Windows editable uipath-runtime source. |
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| "uipath>=2.10.79, <2.11.0", | ||
| "uipath-core>=0.5.17, <0.6.0", | ||
| "uipath-core>=0.5.18, <0.6.0", | ||
| "uipath-platform>=0.1.61, <0.2.0", | ||
| "uipath-runtime>=0.11.0, <0.12.0", | ||
| "uipath-runtime==0.11.0.dev1001180441", | ||
| "langgraph>=1.1.8, <2.0.0", | ||
| "langchain-core>=1.2.11, <2.0.0", |
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| [tool.uv.sources] | ||
| uipath-runtime = { index = "testpypi" } | ||
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Registers a LangChain/LangGraph adapter with the uipath-core adapter registry so GovernanceRuntime can attach BEFORE_MODEL / AFTER_MODEL / TOOL_CALL / AFTER_TOOL hooks via LangChain's callback system. Exposed as a uipath.governance.adapters entry point and self-registers on import. Bumps uipath-core to 0.6.x and uipath-runtime to 0.11.x to pick up the new adapter contracts. Key behaviour: - BEFORE_MODEL is scoped to the latest message only. Earlier passes concatenated the entire prompt history, which re-fired violations from older turns on every subsequent LLM call. The callback now takes the last entry of the last batched prompt (mirrors the BEFORE_AGENT latest_only contract in uipath-runtime). - List-of-blocks content (multimodal, OpenAI function-call, Anthropic tool_use, Claude extended thinking) is walked via _extract_block_text instead of str(msg.content), so structured shapes produce clean text with no dict-repr noise that breaks regex/field rules. - Both on_chat_model_start and on_llm_start cap extracted input at _BEFORE_MODEL_TEXT_CAP = 64000 (matches the runtime side). - register_governance_adapter is idempotent — uses the AdapterRegistry instance state as the single source of truth (no module-level flag). Packaging: - prerelease = "allow" plus override-dependencies for uipath-runtime under [tool.uv] so the dev pin can satisfy the umbrella's stable-only constraint. Re-locked so uipath-runtime resolves from testpypi rather than the local editable Windows path. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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TEST IN PROGRESS: Changes for lang-chain adapter to support governance
Development Package
uipath pack --nolockto get the latest dev build from this PR (requires version range).