refactor: Rename optimize() -> try_optimize_tx_size()

[snawaz]

The current name optimize() is too generic and doesn’t convey what exactly to optimize for: space or performance?.

Initially, I assumed it was meant for performance optimization, but after reading through the relevant code, especially optimize_strategy(), I realized the optimization is actually about reducing transaction size.

Changes:

• Renamed optimize() → try_optimize_tx_size()
• Renamed optimize_strategy() → try_optimize_tx_size_if_needed()

I think this makes the purpose explicit and avoids ambiguity. The function focuses on minimizing transaction size (not any size in general), not improving speed or compute efficiency.

Summary by CodeRabbit

• Refactor
  • Internal task optimization APIs renamed to explicit "try_optimize_tx_size" naming and related call sites/docs updated; external behavior unchanged.
• Bug Fixes / Behavior
  • Optimization flow now returns explicit success/failure and reports resulting size so callers can handle potential size-limit exceedance.
• Tests
  • Unit tests updated to use the renamed APIs and adjusted return semantics.

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

[coderabbitai]

📝 Walkthrough

Walkthrough

The PR renames the BaseTask trait method optimize to try_optimize_tx_size and updates its doc comment. Implementations (e.g., ArgsTask, BufferTask) are renamed accordingly with no logic changes. TaskStrategist replaces its private optimize_strategy(...) -> usize with try_optimize_tx_size_if_needed(...) -> Result<usize, SignerError>, updates build_strategy to call and handle that Result, switches internal calls from optimize() to try_optimize_tx_size(), and updates tests and call sites to the new names.

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Reviewing files that changed from the base of the PR and between e9b6661 and 99dc29b.

📒 Files selected for processing (4)

• magicblock-committor-service/src/tasks/args_task.rs
• magicblock-committor-service/src/tasks/buffer_task.rs
• magicblock-committor-service/src/tasks/mod.rs
• magicblock-committor-service/src/tasks/task_strategist.rs

🚧 Files skipped from review as they are similar to previous changes (1)

• magicblock-committor-service/src/tasks/task_strategist.rs

🧰 Additional context used

🧬 Code graph analysis (3)

magicblock-committor-service/src/tasks/args_task.rs (2)

magicblock-committor-service/src/tasks/buffer_task.rs (1)

• try_optimize_tx_size (149-153)

magicblock-committor-service/src/tasks/mod.rs (1)

• try_optimize_tx_size (71-73)

magicblock-committor-service/src/tasks/buffer_task.rs (2)

magicblock-committor-service/src/tasks/args_task.rs (1)

• try_optimize_tx_size (125-143)

magicblock-committor-service/src/tasks/mod.rs (1)

• try_optimize_tx_size (71-73)

magicblock-committor-service/src/tasks/mod.rs (2)

magicblock-committor-service/src/tasks/args_task.rs (1)

• try_optimize_tx_size (125-143)

magicblock-committor-service/src/tasks/buffer_task.rs (1)

• try_optimize_tx_size (149-153)

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🔇 Additional comments (3)

magicblock-committor-service/src/tasks/mod.rs (1)

69-73: LGTM! Clear naming improvement.

The rename from optimize to try_optimize_tx_size explicitly communicates the function's purpose (transaction size optimization) and follows Rust conventions where the try_ prefix indicates a fallible operation returning a Result.

magicblock-committor-service/src/tasks/buffer_task.rs (1)

149-153: LGTM! Implementation consistent with trait.

The method rename is applied consistently, and the implementation correctly indicates that BufferTask cannot be further optimized by returning Err(self).

magicblock-committor-service/src/tasks/args_task.rs (1)

125-143: LGTM! Implementation consistent with trait.

The method rename is applied consistently, and the implementation logic remains unchanged. The method correctly converts Commit and CommitDiff tasks to BufferTask for size optimization while returning Err(self) for non-optimizable task types.

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[snawaz]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• feat: Make CommitStrategy more granular #618
• refactor: Rename optimize() -> try_optimize_tx_size() #617 👈 (View in Graphite)
• feat: Execute CommitDiff as BufferTask #616 : 1 other dependent PR (#665 )
• feat: Add support for CommitDiff to efficiently commit small changes in large delegated accounts #575
• master

This stack of pull requests is managed by Graphite. Learn more about stacking.

[taco-paco]

I don't mind the change to highlight what we exactly optimizing, but few points:

1. This should be opened into master, as it does not necessarily refer to commit-diff-buffer branch. Also this way commit-diff-buffer branch will be less noisy in diff with master
2. I'd prefer name optimize_tx_size, since in theory we iteratively optimizing it and not doing it right away, at least in context of TaskStrategist

[snawaz]

2. I'd prefer name optimize_tx_size, since in theory we iteratively optimizing it and not doing it right away, at least in context of TaskStrategist

Yes, that's a great name as well. We can keep that instead.

Or maybe try_optimize_tx_size() as it returns Result?

1. This should be opened into master, as it does not necessarily refer to commit-diff-buffer branch. Also this way commit-diff-buffer branch will be less noisy in diff with master

Yes. It should have been onto master if done independently. Actually, I wanted to reorder, and put this earlier in the stack so that later PRs can use the change.

And no, it wont be noisy. This PR wont merge to commit-diff-buffer. I use Graphite to manage my stack of PRs. So this PR will be merge to master directly.

[taco-paco]

I think suggestion to rename to try_optimize_* makes the most sense.

[coderabbitai]

Actionable comments posted: 1

♻️ Duplicate comments (1)

magicblock-committor-service/src/tasks/mod.rs (1)

77-81: Fix typo in BaseTask::try_optimize_tx_size documentation

The docstring still uses “buddled” instead of “bundled”.

-    /// Optimize for transaction size so that more instructions can be buddled together in a single
+    /// Optimize for transaction size so that more instructions can be bundled together in a single

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📥 Commits

Reviewing files that changed from the base of the PR and between 0907290 and 1dd9fbd.

📒 Files selected for processing (4)

• magicblock-committor-service/src/tasks/args_task.rs (1 hunks)
• magicblock-committor-service/src/tasks/buffer_task.rs (1 hunks)
• magicblock-committor-service/src/tasks/mod.rs (1 hunks)
• magicblock-committor-service/src/tasks/task_strategist.rs (4 hunks)

🧰 Additional context used

🧠 Learnings (1)

📚 Learning: 2025-11-07T13:20:13.793Z

Learnt from: bmuddha
Repo: magicblock-labs/magicblock-validator PR: 589
File: magicblock-processor/src/scheduler/coordinator.rs:227-238
Timestamp: 2025-11-07T13:20:13.793Z
Learning: In magicblock-processor's ExecutionCoordinator (scheduler/coordinator.rs), the `account_contention` HashMap intentionally does not call `shrink_to_fit()`. Maintaining slack capacity is beneficial for performance by avoiding frequent reallocations during high transaction throughput. As long as empty entries are removed from the map (which `clear_account_contention` does), the capacity overhead is acceptable.

Applied to files:

• magicblock-committor-service/src/tasks/task_strategist.rs

🧬 Code graph analysis (3)

magicblock-committor-service/src/tasks/mod.rs (2)

magicblock-committor-service/src/tasks/args_task.rs (1)

• try_optimize_tx_size (87-100)

magicblock-committor-service/src/tasks/buffer_task.rs (1)

• try_optimize_tx_size (72-78)

magicblock-committor-service/src/tasks/args_task.rs (2)

magicblock-committor-service/src/tasks/buffer_task.rs (1)

• try_optimize_tx_size (72-78)

magicblock-committor-service/src/tasks/mod.rs (1)

• try_optimize_tx_size (79-81)

magicblock-committor-service/src/tasks/buffer_task.rs (2)

magicblock-committor-service/src/tasks/args_task.rs (1)

• try_optimize_tx_size (87-100)

magicblock-committor-service/src/tasks/mod.rs (1)

• try_optimize_tx_size (79-81)

🔇 Additional comments (3)

magicblock-committor-service/src/tasks/args_task.rs (1)

87-99: ArgsTask::try_optimize_tx_size correctly implements the new trait contract

Commit tasks are upgraded to BufferTask while non‑commit variants correctly return Err(self), matching the BaseTask::try_optimize_tx_size semantics and the strategist’s expectations. No further changes needed here.

magicblock-committor-service/src/tasks/buffer_task.rs (1)

72-78: BufferTask::try_optimize_tx_size correctly indicates no further size optimization

Returning Err(self) for buffer‑based tasks is consistent with the trait’s contract and the design comment that buffers don’t further reduce tx size. This wiring looks good.

magicblock-committor-service/src/tasks/task_strategist.rs (1)

56-58: try_optimize_tx_size_if_needed integration and semantics look consistent

build_strategy now cleanly delegates to try_optimize_tx_size_if_needed, using the returned tx length for the size check and propagating real SignerErrors via ?, while the helper preserves the “optimize heaviest tasks first” behavior and respects Ok(optimized_task) vs Err(self) from BaseTask::try_optimize_tx_size. This matches the new naming and doc semantics without introducing functional regressions.

Also applies to: 154-241

[taco-paco]

LGTM!

[thlorenz]

I believe these kind of changes could be part of whichever next PR touches this part of the code, but LGTM.
Obviously CI needs to pass first.

[snawaz]

changes from this PR are folded into its ancestor.