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@WaterWhisperer WaterWhisperer commented Dec 25, 2025

Which Issue(s) This PR Fixes(Closes)

Fixes #4862

Brief Description

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Summary by CodeRabbit

  • New Features
    • Batch message sending methods now support generic message types implementing MessageTrait, enabling flexibility beyond the standard message format across all producer implementations (DefaultMQProducer, MQProducer, TransactionMQProducer).

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… to accept generic message types implementing MessageTrait
Copilot AI review requested due to automatic review settings December 25, 2025 15:01
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coderabbitai bot commented Dec 25, 2025

Walkthrough

This pull request refactors the send_batch_to_queue_with_callback_timeout method across three producer implementations to accept a generic type parameter M implementing MessageTrait + Send + Sync instead of the concrete Message type, enabling batch processing with various message types.

Changes

Cohort / File(s) Summary
Trait Definition
rocketmq-client/src/producer/mq_producer.rs
Added generic type parameter M to trait method send_batch_to_queue_with_callback_timeout; signature now accepts Vec<M> where M: MessageTrait + Send + Sync instead of Vec<Message>
Producer Implementations
rocketmq-client/src/producer/default_mq_producer.rs, rocketmq-client/src/producer/transaction_mq_producer.rs
Both implementations updated with identical generic signature change; msgs parameter type changed from Vec<Message> to Vec<M> with trait bound M: MessageTrait + Send + Sync; method logic unchanged

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

Suggested labels

refactor♻️, approved, auto merge, AI review first, Difficulty level/Easy

Suggested reviewers

  • TeslaRustor
  • rocketmq-rust-bot
  • mxsm

Poem

🐰 Messages now wear generic cloaks,
No longer bound to one concrete folk!
With MessageTrait as their guiding light,
The batch methods dance with newfound might.
Flexible, free, and sending with grace—
Generics bring joy to this coder's place! ✨

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 (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title accurately describes the main change: refactoring the method to accept generic message types implementing MessageTrait across the codebase.
Linked Issues check ✅ Passed The PR successfully implements both requirements from issue #4862: the method accepts generic message types and enforces the MessageTrait bound.
Out of Scope Changes check ✅ Passed All changes are focused on the method signature updates to support generics; no unrelated modifications are present.
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Pull request overview

This PR refactors the send_batch_to_queue_with_callback_timeout method in the MQProducer trait to accept generic message types implementing MessageTrait, providing greater flexibility for callers to use custom message types instead of being restricted to the concrete Message type.

Key Changes:

  • Added generic type parameter M to send_batch_to_queue_with_callback_timeout with constraint M: MessageTrait + Send + Sync
  • Updated method signature from Vec<Message> to Vec<M> in both the trait definition and implementations
  • Applied changes consistently across the trait definition and both implementing types

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File Description
rocketmq-client/src/producer/mq_producer.rs Updated trait method signature to use generic type parameter M instead of concrete Message type
rocketmq-client/src/producer/default_mq_producer.rs Updated implementation to accept generic message types matching the trait definition
rocketmq-client/src/producer/transaction_mq_producer.rs Updated implementation to accept generic message types and delegate to default producer

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Comment on lines +610 to +618
async fn send_batch_to_queue_with_callback_timeout<M, F>(
&mut self,
msgs: Vec<Message>,
msgs: Vec<M>,
mq: MessageQueue,
f: F,
timeout: u64,
) -> rocketmq_error::RocketMQResult<()>
where
M: MessageTrait + Send + Sync,
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The documentation comment states "A vector of messages to be sent" but now that the method accepts a generic type M implementing MessageTrait, the documentation should be updated to reflect this. Consider updating it to "A vector of messages implementing MessageTrait to be sent" or adding a Type Parameters section documenting the generic type M.

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I think the current comments are fine. If changes are needed, should the relevant documentation be updated through a new issue and pr? cc @mxsm

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Actionable comments posted: 0

🧹 Nitpick comments (3)
rocketmq-client/src/producer/mq_producer.rs (1)

610-619: Trait method signature updated correctly, but consider extending to other batch methods for consistency.

The generic type parameter M and constraint M: MessageTrait + Send + Sync are correctly applied. However, several similar callback-based batch methods remain non-generic:

  • send_batch_to_queue_with_timeout (line 533)
  • send_batch_with_callback (line 550)
  • send_batch_with_callback_timeout (line 569)
  • send_batch_to_queue_with_callback (line 589)

Consider applying the same generic pattern to these methods for consistency across the API.

rocketmq-client/src/producer/default_mq_producer.rs (1)

1157-1174: Implementation is correct and properly delegates to the batch helper.

The generic implementation correctly uses the existing batch() method (lines 474-495) which is already generic. The delegation to async_send_batch_to_queue_with_callback_timeout is appropriate.

However, for consistency, consider making the other callback-based batch methods generic:

  • send_batch_to_queue_with_timeout (line 1089)
  • send_batch_with_callback (line 1105)
  • send_batch_with_callback_timeout (line 1122)
  • send_batch_to_queue_with_callback (line 1140)
rocketmq-client/src/producer/transaction_mq_producer.rs (1)

437-451: Delegation to DefaultMQProducer is correct.

The implementation properly delegates to the updated generic method in DefaultMQProducer. The generic bounds match the trait definition.

For consistency across the TransactionMQProducer API, consider making these other batch methods generic:

  • send_batch_to_queue_with_timeout (line 385)
  • send_batch_with_callback (line 396)
  • send_batch_with_callback_timeout (line 409)
  • send_batch_to_queue_with_callback (line 423)
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📥 Commits

Reviewing files that changed from the base of the PR and between dd50bd1 and e1f66eb.

📒 Files selected for processing (3)
  • rocketmq-client/src/producer/default_mq_producer.rs
  • rocketmq-client/src/producer/mq_producer.rs
  • rocketmq-client/src/producer/transaction_mq_producer.rs
🧰 Additional context used
🧬 Code graph analysis (3)
rocketmq-client/src/producer/mq_producer.rs (2)
rocketmq-client/src/producer/default_mq_producer.rs (1)
  • send_batch_to_queue_with_callback_timeout (1157-1174)
rocketmq-client/src/producer/transaction_mq_producer.rs (1)
  • send_batch_to_queue_with_callback_timeout (437-451)
rocketmq-client/src/producer/default_mq_producer.rs (2)
rocketmq-client/src/producer/mq_producer.rs (1)
  • send_batch_to_queue_with_callback_timeout (610-619)
rocketmq-client/src/producer/transaction_mq_producer.rs (1)
  • send_batch_to_queue_with_callback_timeout (437-451)
rocketmq-client/src/producer/transaction_mq_producer.rs (2)
rocketmq-client/src/producer/default_mq_producer.rs (1)
  • send_batch_to_queue_with_callback_timeout (1157-1174)
rocketmq-client/src/producer/mq_producer.rs (1)
  • send_batch_to_queue_with_callback_timeout (610-619)
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codecov bot commented Dec 25, 2025

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 33.20%. Comparing base (dd50bd1) to head (e1f66eb).

Files with missing lines Patch % Lines
...ocketmq-client/src/producer/default_mq_producer.rs 0.00% 3 Missing ⚠️
...tmq-client/src/producer/transaction_mq_producer.rs 0.00% 3 Missing ⚠️
Additional details and impacted files
@@            Coverage Diff             @@
##             main    #5005      +/-   ##
==========================================
- Coverage   33.20%   33.20%   -0.01%     
==========================================
  Files         745      745              
  Lines      109501   109503       +2     
==========================================
  Hits        36361    36361              
- Misses      73140    73142       +2     

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LGTM - All CI checks passed ✅

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[Refactor♻️] Refactor send_batch_to_queue_with_callback_timeout to accept generic message types implementing MessageTrait

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