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fix(plan-executor): wire SubplanService and SubplanExecutionService into Execute phase #3619

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freemo merged 1 commit from fix/m5-plan-executor-subplan-spawning into master

2026-04-05 21:06:48 +00:00

freemo commented

2026-04-05 20:49:07 +00:00

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Summary

This PR fixes a critical gap in PlanExecutor where subplan spawning was entirely absent from the Execute phase — meaning any plan that recorded subplan_spawn or subplan_parallel_spawn decisions during Strategize would silently skip child plan creation and execution. The fix wires SubplanService and SubplanExecutionService into PlanExecutor, fully realising the hierarchical plan execution model defined in the specification.

Changes

Injected SubplanService and SubplanExecutionService as optional constructor parameters into PlanExecutor.__init__(). Both default to None to preserve full backward compatibility with all existing callers and tests that do not use subplan functionality.
Implemented _spawn_subplans() helper that queries recorded spawn decisions via SubplanService.get_spawn_decisions() and calls SubplanService.spawn() for each decision, creating the child plan records. When no spawn decisions are present, the method is a no-op.
Implemented _execute_subplans() helper that calls SubplanExecutionService.execute_all(), correctly routing sequential subplan_spawn decisions through ordered execution and subplan_parallel_spawn groups through concurrent execution.
Implemented _apply_subplan_results_to_plan() to propagate child plan failure information back to the parent plan. When one or more child plans fail, the parent plan's error_details field is annotated with a failed_subplan_ids list so failures are surfaced rather than silently swallowed.
Wired _spawn_subplans() and _execute_subplans() into both execute paths — _run_execute_with_runtime() and _run_execute_with_stub() — so that subplan spawning occurs after actor completion regardless of whether a live runtime or a test stub is in use.
Exposed subplan_service and subplan_execution_service properties on PlanExecutor for introspection and testability.
Added Behave feature file with 6 scenarios covering: sequential subplan_spawn realisation, concurrent subplan_parallel_spawn group execution, no-op behaviour when no spawn decisions are recorded, and parent plan failure tracking when a child plan fails.
Added Robot Framework integration test suite with 6 test cases validating end-to-end subplan spawning.

Design Decisions

Optional service injection (backward compatibility): Both services are injected as optional parameters (None by default). When either is absent, all spawning logic is skipped entirely.
No-op on empty spawn decisions: _spawn_subplans() returns early when no spawn decisions are found.
Failure annotation rather than immediate abort: When child plans fail, the parent plan's error_details is annotated with failed_subplan_ids rather than immediately raising an exception.
Shared spawning logic across runtime and stub paths: Both _run_execute_with_runtime() and _run_execute_with_stub() delegate to the same helpers.

Testing

Unit tests (Behave): ✅ 6 scenarios — all pass
Integration tests (Robot Framework): ✅ 6 test cases — all pass
Lint: ✅ All checks pass
Typecheck: ✅ 0 errors

Closes #3561

Automated by CleverAgents Bot
Supervisor: Implementation | Agent: ca-issue-worker

Automated by CleverAgents Bot
Supervisor: Implementation | Agent: ca-pr-api-creator

## Summary This PR fixes a critical gap in `PlanExecutor` where subplan spawning was entirely absent from the Execute phase — meaning any plan that recorded `subplan_spawn` or `subplan_parallel_spawn` decisions during Strategize would silently skip child plan creation and execution. The fix wires `SubplanService` and `SubplanExecutionService` into `PlanExecutor`, fully realising the hierarchical plan execution model defined in the specification. ## Changes - **Injected `SubplanService` and `SubplanExecutionService` as optional constructor parameters** into `PlanExecutor.__init__()`. Both default to `None` to preserve full backward compatibility with all existing callers and tests that do not use subplan functionality. - **Implemented `_spawn_subplans()` helper** that queries recorded spawn decisions via `SubplanService.get_spawn_decisions()` and calls `SubplanService.spawn()` for each decision, creating the child plan records. When no spawn decisions are present, the method is a no-op. - **Implemented `_execute_subplans()` helper** that calls `SubplanExecutionService.execute_all()`, correctly routing sequential `subplan_spawn` decisions through ordered execution and `subplan_parallel_spawn` groups through concurrent execution. - **Implemented `_apply_subplan_results_to_plan()`** to propagate child plan failure information back to the parent plan. When one or more child plans fail, the parent plan's `error_details` field is annotated with a `failed_subplan_ids` list so failures are surfaced rather than silently swallowed. - **Wired `_spawn_subplans()` and `_execute_subplans()` into both execute paths** — `_run_execute_with_runtime()` and `_run_execute_with_stub()` — so that subplan spawning occurs after actor completion regardless of whether a live runtime or a test stub is in use. - **Exposed `subplan_service` and `subplan_execution_service` properties** on `PlanExecutor` for introspection and testability. - **Added Behave feature file** with 6 scenarios covering: sequential `subplan_spawn` realisation, concurrent `subplan_parallel_spawn` group execution, no-op behaviour when no spawn decisions are recorded, and parent plan failure tracking when a child plan fails. - **Added Robot Framework integration test suite** with 6 test cases validating end-to-end subplan spawning. ## Design Decisions - **Optional service injection (backward compatibility):** Both services are injected as optional parameters (`None` by default). When either is absent, all spawning logic is skipped entirely. - **No-op on empty spawn decisions:** `_spawn_subplans()` returns early when no spawn decisions are found. - **Failure annotation rather than immediate abort:** When child plans fail, the parent plan's `error_details` is annotated with `failed_subplan_ids` rather than immediately raising an exception. - **Shared spawning logic across runtime and stub paths:** Both `_run_execute_with_runtime()` and `_run_execute_with_stub()` delegate to the same helpers. ## Testing - **Unit tests (Behave):** ✅ 6 scenarios — all pass - **Integration tests (Robot Framework):** ✅ 6 test cases — all pass - **Lint:** ✅ All checks pass - **Typecheck:** ✅ 0 errors Closes #3561 --- **Automated by CleverAgents Bot** Supervisor: Implementation | Agent: ca-issue-worker --- **Automated by CleverAgents Bot** Supervisor: Implementation | Agent: ca-pr-api-creator

freemo added 1 commit

2026-04-05 20:49:07 +00:00

fix(plan-executor): wire SubplanService and SubplanExecutionService into Execute phase

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8608584e99

Implemented optional SubplanService and SubplanExecutionService wiring in PlanExecutor.__init__() (None = no-op).
- Added _spawn_subplans() helper:
  - Queries spawn decisions via SubplanService.get_spawn_decisions() and calls SubplanService.spawn() for each decision.
  - No-ops when there are no spawn decisions.
- Added _execute_subplans() helper:
  - Delegates to SubplanExecutionService.execute_all() to run spawned subplans, handling both sequential and parallel groups as dictated by decisions.
- Added _apply_subplan_results_to_plan() helper:
  - Updates parent plan status tracking when child subplans fail.
  - Annotates error_details with failed_subplan_ids when appropriate.
- Integrated spawning and execution into existing flow:
  - Called _spawn_subplans() and _execute_subplans() from both _run_execute_with_runtime() and _run_execute_with_stub() after actor completion.
- Introduced PlanExecutor properties:
  - subplan_service and subplan_execution_service for external wiring and testability.
- Added tests and scenarios:
  - Behave feature file with 6 scenarios covering subplan_spawn, subplan_parallel_spawn, no-op, and failure tracking.
  - Robot Framework integration test suite with 6 end-to-end subplan spawning test cases.

Key design decisions
- Optional services (None = no-op) to maintain backward compatibility with existing deployments.
- Subplan spawning is a no-op when no spawn decisions exist, avoiding unnecessary work.
- Parent plan error_details is annotated with failed_subplan_ids when a child subplan fails to aid debugging and traceability.
- Both runtime and stub execute paths share the same spawning logic to ensure consistent behavior across execution modes.

ISSUES CLOSED: #3561

freemo added a new dependency

2026-04-05 20:49:14 +00:00

#3561 UAT: PlanExecutor has no subplan spawning integration — child plans are never spawned during Execute phase

freemo added this to the v3.4.0 milestone

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fix(plan-executor): wire SubplanService and SubplanExecutionService into Execute phase #3619

Summary

Changes

Design Decisions

Testing

Code Review — PR #3619

VERDICT: APPROVE ✅

Overview

✅ Specification Compliance

✅ Test Coverage Quality

✅ Error Handling Patterns

✅ Quality Gates

Non-blocking Observations