[ISSUE #2287]🚀Implement BrokerRuntime start method💫

[mxsm]

Which Issue(s) This PR Fixes(Closes)

Fixes #2287

Brief Description

How Did You Test This Change?

Summary by CodeRabbit

• New Features

  • Enhanced broker runtime initialization with additional service components
  • Integrated new pre-online service into broker startup sequence

• Improvements

  • Refined startup process for broker services
  • Added more comprehensive service initialization mechanism

[coderabbitai]

Walkthrough

The pull request modifies the BrokerRuntime structure in the rocketmq-broker/src/broker_runtime.rs file. A new field broker_pre_online_service of type BrokerPreOnlineService is added to the struct. The new method is updated to include this new field during initialization. The start_basic_service method is enhanced to start multiple components in a specific order, including the newly added broker_pre_online_service, along with other services like timer_message_store, replicas_manager, and various processors.

Changes

File	Change Summary
rocketmq-broker/src/broker_runtime.rs	- Added broker_pre_online_service: BrokerPreOnlineService field to BrokerRuntime struct - Updated new() method to include broker_pre_online_service parameter - Enhanced start_basic_service() method with additional component startup calls

Assessment against linked issues

Objective	Addressed	Explanation
Implement BrokerRuntime start method [#2287]	✅

Possibly related PRs

• [ISSUE #2257]🚀Add BrokerPreOnlineService struct for rust #2258: Adds the BrokerPreOnlineService struct
• [ISSUE #2279]🚀BrokerFastFailure and BrokerPreOnlineService add start method #2280: Adds start method to BrokerPreOnlineService
• [ISSUE #2285]🚀 PopMessageProcessor,TimerMessageStore and TopicQueueMappingCleanService add start method #2286: Adds start methods to multiple components

Suggested labels

feature🚀, auto merge, ready to review, waiting-review, AI review first, rocketmq-broker crate

Suggested reviewers

• TeslaRustor
• SpaceXCN
• rocketmq-rust-bot

Poem

🚀 Rocket of code, rising high and bright,
Broker's runtime, a new service in sight!
Components align, in perfect array,
Pre-online magic, leading the way!
Rust's power unfurls, with each method's might 🐰

---

📜 Recent review details

Configuration used: .coderabbit.yaml
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 61bbbc5 and bc4cb98.

📒 Files selected for processing (1)

• rocketmq-broker/src/broker_runtime.rs (5 hunks)

⏰ Context from checks skipped due to timeout of 90000ms (9)

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• GitHub Check: auto-approve

🔇 Additional comments (3)

rocketmq-broker/src/broker_runtime.rs (3)

162-162: LGTM! Field addition follows the established pattern.

The new field broker_pre_online_service is correctly added to the BrokerRuntime struct with proper type and placement.

---

Line range hint 935-999: LGTM! Service start sequence is well-structured.

The implementation follows a clear and logical order for starting services:

1. Core services (timer, replicas)
2. Processors (pop, ack, notification)
3. Support services (mapping, stats, bridge)
4. The new broker_pre_online_service
5. Cold data services

The sequence ensures proper initialization order and error handling.

---

268-268: Verify the initialization of BrokerPreOnlineService.

The field is initialized using the type directly (BrokerPreOnlineService), which suggests it might be using the type as a unit-like struct. Ensure this is the intended initialization pattern and that the service doesn't require any configuration parameters.

✅ Verification successful

The initialization pattern for BrokerPreOnlineService is correct

The service is implemented as a unit struct (empty struct) in broker/broker_pre_online_service.rs, so initializing it with just the type name is the proper way. The service is in early development with placeholder implementations for start() and shutdown() methods.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for BrokerPreOnlineService implementation to verify initialization pattern
ast-grep --pattern 'struct BrokerPreOnlineService {
  $$$
}'

Length of output: 62

---

Script:

#!/bin/bash
# Search for any mention of BrokerPreOnlineService
rg "BrokerPreOnlineService" -A 5

# Search for impl blocks
ast-grep --pattern 'impl BrokerPreOnlineService {
  $$$
}'

# Search for Default implementation
ast-grep --pattern 'impl Default for BrokerPreOnlineService {
  $$$
}'

Length of output: 3298

---

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[rocketmq-rust-bot]

🔊@mxsm 🚀Thanks for your contribution🎉！

💡CodeRabbit(AI) will review your code first🔥！

Note

🚨The code review suggestions from CodeRabbit are to be used as a reference only, and the PR submitter can decide whether to make changes based on their own judgment. Ultimately, the project management personnel will conduct the final code review💥.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 44 lines in your changes missing coverage. Please review.

Project coverage is 28.21%. Comparing base (61bbbc5) to head (bc4cb98).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
rocketmq-broker/src/broker_runtime.rs	0.00%	44 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2288      +/-   ##
==========================================
- Coverage   28.23%   28.21%   -0.02%     
==========================================
  Files         504      504              
  Lines       72389    72427      +38     
==========================================
  Hits        20438    20438              
- Misses      51951    51989      +38     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[rocketmq-rust-bot]

LGTM