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 were renamed (introducing explicit "try" naming) and related call sites and docs updated. Behavior remains unchanged.
• Bug Fixes / Behavior
  • Optimization flow now returns explicit success/failure and reports resulting size so callers can handle potential 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 trait method optimize to try_optimize_tx_size on BaseTask, updates its doc comment, and renames implementations (e.g., ArgsTask, BufferTask) accordingly without 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, and switches internal calls from optimize() to try_optimize_tx_size(). Tests and call sites were updated to the new names.

Possibly related PRs

• Handling of intent execution failures #564 — Adds ArgsTask/BufferTask and the original BaseTask::optimize implementation that this PR renames and adapts call sites to.

Suggested reviewers

• GabrielePicco
• bmuddha

✨ 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 snawaz/rename-optimize

---

📜 Recent review details

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 6b7daa1 and e9b6661.

📒 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 (3)

📚 Learning: 2025-12-03T09:33:48.707Z

Learnt from: Dodecahedr0x
Repo: magicblock-labs/magicblock-validator PR: 639
File: test-integration/test-committor-service/tests/test_ix_commit_local.rs:867-881
Timestamp: 2025-12-03T09:33:48.707Z
Learning: Repo: magicblock-labs/magicblock-validator PR: 639
Context: test-integration/test-committor-service/tests/test_ix_commit_local.rs (ix_commit_local)
Learning: The PhotonIndexer used for compressed account fetches (get_compressed_account) has built‑in retry logic (defaults to ~10 attempts), so tests should not add separate retry loops around compressed fetches unless there’s a specific need.

Applied to files:

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

📚 Learning: 2025-11-21T10:22:07.520Z

Learnt from: taco-paco
Repo: magicblock-labs/magicblock-validator PR: 661
File: magicblock-committor-service/src/intent_executor/single_stage_executor.rs:20-28
Timestamp: 2025-11-21T10:22:07.520Z
Learning: In magicblock-committor-service's SingleStageExecutor and TwoStageExecutor (single_stage_executor.rs and two_stage_executor.rs), the fields transaction_strategy, junk, and patched_errors are intentionally public because these executors are designed to be used independently outside of the IntentExecutor scope, and callers need access to these execution reports for cleanup and error handling.

Applied to files:

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

📚 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/args_task.rs (2)

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

• try_optimize_tx_size (73-79)

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

• try_optimize_tx_size (80-82)

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

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

• try_optimize_tx_size (88-101)

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

• try_optimize_tx_size (73-79)

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

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

• try_optimize_tx_size (88-101)

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

• try_optimize_tx_size (80-82)

🔇 Additional comments (5)

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

88-101: LGTM! Clean refactoring with improved naming.

The method rename from optimize to try_optimize_tx_size improves clarity by explicitly indicating the function optimizes transaction size. The implementation logic remains unchanged and correct.

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

73-79: LGTM! Consistent rename with correct semantics.

The rename to try_optimize_tx_size maintains the correct behavior of returning Err(self) since BufferTask cannot be further optimized for transaction size. The comment clearly explains the rationale.

magicblock-committor-service/src/tasks/task_strategist.rs (3)

174-176: LGTM! Improved error handling and naming.

The refactoring correctly updates the call to try_optimize_tx_size_if_needed, properly handles the Result with the ? operator, and checks if the optimized size is within the limit. The changes improve both clarity and error handling.

---

272-278: LGTM! Clear documentation of new behavior.

The documentation accurately describes that the function returns the optimized transaction size in a Result, and importantly notes that the returned size may still exceed MAX_ENCODED_TRANSACTION_SIZE, requiring caller decision. This clarifies the function's contract well.

---

331-331: LGTM! Consistent method name update.

The call correctly updated from task.optimize() to task.try_optimize_tx_size(), maintaining consistency with the trait method rename.

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[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

• refactor: Simplify Task types #665
• feat: Make TaskStrategy more granular #618
• refactor: Rename optimize() -> try_optimize_tx_size() #617 👈 (View in Graphite)
• feat: Execute CommitDiff as BufferTask #616
• 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: 2

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)

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

465-479: Make the test fail if try_optimize_tx_size_if_needed returns an error

In test_optimize_strategy_prioritizes_largest_tasks, the call is currently ignored via let _ = ..., so a signing/assembly error would still yield a “passing” test. Prefer asserting success:

-        let _ = TaskStrategist::try_optimize_tx_size_if_needed(&mut tasks);
+        TaskStrategist::try_optimize_tx_size_if_needed(&mut tasks)
+            .expect("tx-size optimization should succeed in this test");

This keeps the behavioral assertions while ensuring unexpected errors surface as test failures.

📜 Review details

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between d445507 and 0907290.

📒 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

🧬 Code graph analysis (3)

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)

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/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)

🔇 Additional comments (2)

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

87-99: ArgsTask::try_optimize_tx_size correctly preserves prior behavior

The Commit branch now clearly opts into BufferTask while other variants correctly return Err(self) when no tx‑size optimization is possible, matching the updated BaseTask contract. No functional issues spotted.

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

72-78: No-op BufferTask::try_optimize_tx_size is consistent with design

Returning Err(self) here is appropriate since buffer-based commits already move account data off the transaction and there’s no further tx‑size reduction to attempt.

[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

📜 Review details

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

📥 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