graph interrupts #1350
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graph interrupts #1350
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added 2 commits
December 16, 2025 14:14
Add comprehensive interrupt handling and resume functionality to the Graph class: - Import and initialize _InterruptState to track interrupt state across invocations - Call interrupt_state.resume() at the start of invoke() to properly resume interrupted tasks - Track MultiAgentNodeInterruptEvent occurrences during graph execution - Pass interrupts to _build_result() for inclusion in final result - Fix resume state management by only clearing flags on COMPLETED/FAILED status - Create a copy of _resume_next_nodes to prevent clearing the list being iterated - Add detailed debug logging for resume state at execution start - Detect interrupts during batch execution and break out early when detected This enables graphs to be properly interrupted mid-execution and resumed from the exact point of interruption, maintaining state consistency across session boundaries.
msalehan
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Description
Here's the completed PR description:
Description
Add interrupt support for Graph multi-agent pattern, following the same implementation pattern as Swarm (PR #1193).
Implementation Changes:
src/strands/multiagent/graph.py:graphreference toGraphNodefor interrupt state restorationGraphNode.reset_executor_state()to restore from interrupt context (messages, state, interrupt_state)Graph.__init__()to set graph reference on all nodes_execute_node()to distinguish between hook interrupts (activated=False) and agent interrupts (activated=True)_activate_interrupt()to save agent's actual activated flag (not hardcoded True)_execute_node()to properly restore node stateTest Coverage:
tests/strands/multiagent/test_graph.py:test_graph_interrupt_on_before_node_call_event- Hook-based interrupttest_graph_interrupt_on_agent- Agent tool interrupttests_integ/interrupts/multiagent/test_hook.py:test_graph_interrupt- Full end-to-end with approvaltest_graph_interrupt_reject- Rejection with cancellationThis enables graphs to be properly interrupted mid-execution (via hooks or agent tools) and resumed from the exact point of interruption, maintaining state consistency.
Related Issues
#204
Documentation PR
None
Type of Change
New feature
Testing
How have you tested the change? Verify that the changes do not break functionality or introduce warnings in consuming repositories: agents-docs, agents-tools, agents-cli
hatch run prepareChecklist
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