[ISSUE #5538] - Implement ControllerElectMaster Request Handler #5564
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Actionable comments posted: 1
🤖 Fix all issues with AI agents
In @rocketmq-controller/src/processor/controller_request_processor.rs:
- Around line 317-322: The parameter named `_request` is actually used (see
`_request.decode_command_custom_header::<ElectMasterRequestHeader>()`), so
rename the function parameter from `_request` to `request` in the function
signature and update all usages (e.g., change
`_request.decode_command_custom_header` to
`request.decode_command_custom_header`) to follow Rust naming conventions and
avoid the unused-underscore meaning; ensure any pattern matches, references, and
documentation/comments in that function are updated accordingly.
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📒 Files selected for processing (1)
rocketmq-controller/src/processor/controller_request_processor.rs
🧰 Additional context used
🧬 Code graph analysis (1)
rocketmq-controller/src/processor/controller_request_processor.rs (4)
rocketmq-remoting/src/protocol/remoting_command.rs (1)
request_code(710-712)rocketmq-controller/src/heartbeat/broker_live_info.rs (1)
channel(108-110)rocketmq-controller/src/controller/controller_manager.rs (1)
controller(620-622)rocketmq-error/src/unified.rs (1)
request_header_error(471-473)
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- GitHub Check: Check (fmt + clippy)
- GitHub Check: auto-approve
🔇 Additional comments (2)
rocketmq-controller/src/processor/controller_request_processor.rs (2)
91-91: LGTM! Necessary imports added.The imports for
RocketMQErrorandElectMasterRequestHeaderare correctly added and used in thehandle_elect_masterimplementation.Also applies to: 96-96
324-332: Implementation follows the correct pattern.The forwarding to the controller and response handling are implemented correctly. The async
elect_mastermethod with signatureasync fn elect_master(&self, request: &ElectMasterRequestHeader) -> RocketMQResult<Option<RemotingCommand>>is properly called, awaited, and the result is correctly propagated using the?operator before being wrapped inOk()for return.
| // Decode request header | ||
| let request_header = _request | ||
| .decode_command_custom_header::<ElectMasterRequestHeader>() | ||
| .map_err(|e| { | ||
| RocketMQError::request_header_error(format!("Failed to decode ElectMasterRequestHeader: {:?}", e)) | ||
| })?; |
There was a problem hiding this comment.
Fix parameter naming: remove underscore prefix from used parameter.
The _request parameter is actually used (lines 318-319), so the underscore prefix violates Rust's naming convention. In Rust, the underscore prefix signals that a parameter is intentionally unused to suppress compiler warnings. Since _request is used here, it should be renamed to request.
🔧 Proposed fix
async fn handle_elect_master(
&mut self,
_channel: Channel,
_ctx: ConnectionHandlerContext,
- _request: &mut RemotingCommand,
+ request: &mut RemotingCommand,
) -> RocketMQResult<Option<RemotingCommand>> {
// Decode request header
- let request_header = _request
+ let request_header = request
.decode_command_custom_header::<ElectMasterRequestHeader>()
.map_err(|e| {
RocketMQError::request_header_error(format!("Failed to decode ElectMasterRequestHeader: {:?}", e))
})?;📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| // Decode request header | |
| let request_header = _request | |
| .decode_command_custom_header::<ElectMasterRequestHeader>() | |
| .map_err(|e| { | |
| RocketMQError::request_header_error(format!("Failed to decode ElectMasterRequestHeader: {:?}", e)) | |
| })?; | |
| async fn handle_elect_master( | |
| &mut self, | |
| _channel: Channel, | |
| _ctx: ConnectionHandlerContext, | |
| request: &mut RemotingCommand, | |
| ) -> RocketMQResult<Option<RemotingCommand>> { | |
| // Decode request header | |
| let request_header = request | |
| .decode_command_custom_header::<ElectMasterRequestHeader>() | |
| .map_err(|e| { | |
| RocketMQError::request_header_error(format!("Failed to decode ElectMasterRequestHeader: {:?}", e)) | |
| })?; |
🤖 Prompt for AI Agents
In @rocketmq-controller/src/processor/controller_request_processor.rs around
lines 317 - 322, The parameter named `_request` is actually used (see
`_request.decode_command_custom_header::<ElectMasterRequestHeader>()`), so
rename the function parameter from `_request` to `request` in the function
signature and update all usages (e.g., change
`_request.decode_command_custom_header` to
`request.decode_command_custom_header`) to follow Rust naming conventions and
avoid the unused-underscore meaning; ensure any pattern matches, references, and
documentation/comments in that function are updated accordingly.
Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #5564 +/- ##
==========================================
- Coverage 38.54% 38.51% -0.03%
==========================================
Files 816 816
Lines 110917 110928 +11
==========================================
- Hits 42748 42728 -20
- Misses 68169 68200 +31 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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3 participants
Which Issue(s) This PR Fixes(Closes)
Fixes #5538
Brief Description
This PR implements handling for the
ControllerElectMasterrequest inControllerRequestProcessorby adding the missinghandle_elect_masterlogic. This enables the controller to process master election requests for broker groups, which is a core capability for ensuring high availability and automatic failover in the RocketMQ cluster.ElectMasterRequestHeaderfrom the incomingRemotingCommandcontroller_manager.controller().elect_master(...)RemotingCommandcontaining:How Did You Test This Change?
cargo buildcargo testto ensure no functionality was affectedSummary by CodeRabbit
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