refactor: StepStatus log

[L-Xiafeng]

Summary by CodeRabbit

• Refactor

  • Optimized internal node tracking performance through improved memory efficiency.

• Chores

  • Enhanced debug logging for step execution monitoring.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

📝 Walkthrough

Walkthrough

Modified StepStatusChange handlers in CtldPublicDefs to add conditional debug logging that only runs when nodes are still running. Updated RunningNodes() method signature to return a const reference instead of a by-value copy.

Changes

Cohort / File(s)	Change Summary
StepStatusChange debug logging optimization src/CraneCtld/CtldPublicDefs.cpp	Replaced unconditional finish-log in both DaemonStepInCtld::StepStatusChange and CommonStepInCtld::StepStatusChange with conditional guards that log only when remaining running nodes exist. No functional behavior change.
RunningNodes() signature optimization src/CraneCtld/CtldPublicDefs.h	Updated StepInCtld::RunningNodes() to return const std::unordered_set<CranedId>& instead of returning by-value copy, improving const-correctness and avoiding unnecessary copies.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested reviewers

• NamelessOIer
• Nativu5

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'refactor: StepStatus log' accurately describes the main change: refactoring the StepStatus change logging mechanism by adding conditional debug logging instead of unconditional finish logs.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/statuschange

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📜 Recent review details

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 5187844 and 47d157a.

📒 Files selected for processing (2)

• src/CraneCtld/CtldPublicDefs.cpp
• src/CraneCtld/CtldPublicDefs.h

🧰 Additional context used

🧠 Learnings (3)

📓 Common learnings

Learnt from: L-Xiafeng
Repo: PKUHPC/CraneSched PR: 399
File: src/Craned/Supervisor/SupervisorPublicDefs.h:32-37
Timestamp: 2025-05-26T11:06:28.796Z
Learning: The user L-Xiafeng prefers to defer refactoring duplicate definitions until they become a larger pattern in the codebase, rather than addressing individual instances immediately.

📚 Learning: 2025-06-07T10:47:59.071Z

Learnt from: L-Xiafeng
Repo: PKUHPC/CraneSched PR: 520
File: src/CraneCtld/CranedKeeper.cpp:416-417
Timestamp: 2025-06-07T10:47:59.071Z
Learning: In src/CraneCtld/CranedKeeper.h, the m_shutting_down_ member in CranedStub class is declared as std::atomic_bool, making it thread-safe for concurrent access without additional synchronization.

Applied to files:

• src/CraneCtld/CtldPublicDefs.h

📚 Learning: 2025-06-30T08:43:44.470Z

Learnt from: huerni
Repo: PKUHPC/CraneSched PR: 537
File: src/Craned/TaskManager.cpp:145-147
Timestamp: 2025-06-30T08:43:44.470Z
Learning: In the CraneSched codebase, src/Craned/Craned.cpp guarantees that g_config.CranedRes.contains(g_config.CranedIdOfThisNode) through explicit validation during startup. The code checks if g_config.CranedRes.contains(g_config.Hostname) and exits the process if not found, then sets g_config.CranedIdOfThisNode = g_config.Hostname. TaskManager constructor is called after this validation, so g_config.CranedRes[g_config.CranedIdOfThisNode] is guaranteed to be valid.

Applied to files:

• src/CraneCtld/CtldPublicDefs.h

🧬 Code graph analysis (1)

src/CraneCtld/CtldPublicDefs.cpp (1)

src/Craned/Supervisor/TaskManager.h (2)

• job_id (51-51)
• step_id (52-52)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)

• GitHub Check: format

🔇 Additional comments (3)

src/CraneCtld/CtldPublicDefs.cpp (2)

534-538: LGTM - Conditional logging reduces noise.

The debug log now only fires when there are still running nodes, which makes the message "waiting for X status change" accurate and reduces unnecessary log entries when the daemon step is fully complete.

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877-881: LGTM - Consistent with daemon step logging.

The conditional debug logging mirrors the pattern from DaemonStepInCtld::StepStatusChange, providing useful information only when there are remaining nodes to track.

src/CraneCtld/CtldPublicDefs.h (1)

588-590: LGTM - Performance improvement with const-correctness.

Changing the return type from by-value to const reference avoids unnecessary copies of the std::unordered_set and enforces const-correctness, preventing callers from inadvertently modifying the internal state.

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