feat: enforce configurable tool timeouts - #1015
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Pull request overview
This PR makes configured tool timeouts actually take effect in the LangGraph runtime integration by extending the durable interrupt mechanism to support time-bounded waits (via WaitUntil) and ensuring timeout resumes fail the agent execution rather than being returned as tool error messages.
Changes:
- Add optional
timeout(ms) support to@durable_interrupt, emitting a composite interrupt payload[value, WaitUntil(...)]and raisingUiPathTimeoutErrorwhen resumed by a timer. - Apply the configured timeout to Process, IXP Extraction, DeepRAG, and Batch Transform durable interrupts.
- Update tool-node error handling and tests so
UiPathTimeoutErrorbubbles up (failing the agent) and composite interrupts are validated.
Reviewed changes
Copilot reviewed 13 out of 14 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| uv.lock | Bumps package version to 0.14.17 in the lockfile. |
| pyproject.toml | Bumps package version to 0.14.17. |
| src/uipath_langchain/_utils/durable_interrupt/decorator.py | Adds timeout-aware interrupt/resume helpers and overloads for durable_interrupt(timeout=...). |
| src/uipath_langchain/agent/tools/tool_node.py | Re-raises UiPathTimeoutError to fail agent execution instead of converting to ToolMessage. |
| src/uipath_langchain/agent/tools/process_tool.py | Passes configured tool timeout into @durable_interrupt for process invocation. |
| src/uipath_langchain/agent/tools/extraction_tool.py | Switches IXP extraction to @durable_interrupt(timeout=...) to support timeouts. |
| src/uipath_langchain/agent/tools/internal_tools/deeprag_tool.py | Applies optional resource timeout to DeepRAG durable interrupts. |
| src/uipath_langchain/agent/tools/internal_tools/batch_transform_tool.py | Applies optional resource timeout to Batch Transform durable interrupts. |
| tests/agent/tools/test_tool_node.py | Adds a timeout tool test ensuring UiPathTimeoutError is re-raised. |
| tests/agent/tools/test_process_tool.py | Validates composite interrupt includes WaitUntil when timeout is configured. |
| tests/agent/tools/test_extraction_tool.py | Updates interrupt patching and validates WaitUntil is included when timeout is configured. |
| tests/agent/tools/test_durable_interrupt.py | Adds coverage for timeout behavior: composite interrupts and timer-resume rejection. |
| tests/agent/tools/internal_tools/test_deeprag_tool.py | Validates composite interrupt behavior with WaitUntil when timeout is configured. |
| tests/agent/tools/internal_tools/test_batch_transform_tool.py | Validates composite interrupt behavior with WaitUntil when timeout is configured. |
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Summary
Why
configured tool timeouts were stored but not applied by the runtime.