[ISSUE #2161]🚀Implement BatchUnregistrationService💫 #2162
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #2162 +/- ##
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- Coverage 28.56% 28.54% -0.02%
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Files 497 498 +1
Lines 70961 70992 +31
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Hits 20267 20267
- Misses 50694 50725 +31 ☔ View full report in Codecov by Sentry. |
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Actionable comments posted: 0
🧹 Nitpick comments (3)
rocketmq-namesrv/src/route/batch_unregistration_service.rs (3)
30-41: Add documentation for the constructor.Consider adding documentation comments explaining:
- The purpose of the service
- The significance of the channel capacity configuration
- The ownership model of the NameServerRuntimeInner
+/// Creates a new BatchUnregistrationService with the specified runtime configuration. +/// +/// # Arguments +/// * `name_server_runtime_inner` - Shared runtime state for the name server +/// +/// The channel capacity is configured based on the name server's unregister_broker_queue_capacity setting. pub(crate) fn new(name_server_runtime_inner: ArcMut<NameServerRuntimeInner>) -> Self {
43-49: Enhance error handling in submit method.While the current implementation is functional, consider:
- Providing more context in the error message about why the submission failed
- Distinguishing between different error cases (full channel vs closed channel)
pub fn submit(&self, request: UnRegisterBrokerRequestHeader) -> bool { if let Err(e) = self.tx.try_send(request) { - warn!("submit unregister broker request failed: {:?}", e); + warn!( + "Failed to submit unregister request: {}. Reason: {}", + match e { + TrySendError::Full(_) => "channel full - server is busy", + TrySendError::Closed(_) => "service has been shut down", + }, + e + ); return false; } true }
23-66: Add comprehensive test coverage.The service handles critical broker unregistration operations. Consider adding:
- Unit tests for different scenarios (success, channel full, shutdown)
- Integration tests with RouteInfoManager
- Load tests to verify batch processing behavior
Would you like me to help generate a comprehensive test suite for this service?
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📒 Files selected for processing (2)
rocketmq-namesrv/src/route.rs(1 hunks)rocketmq-namesrv/src/route/batch_unregistration_service.rs(1 hunks)
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🔇 Additional comments (3)
rocketmq-namesrv/src/route.rs (1)
18-18: LGTM! Module declaration is appropriate.The
pub(crate)visibility modifier correctly restricts the module's accessibility to within the crate.rocketmq-namesrv/src/route/batch_unregistration_service.rs (2)
17-27: Well-structured implementation with appropriate field visibility.The struct design effectively encapsulates the required components for batch processing using tokio channels.
51-65:⚠️ Potential issueCritical improvements needed in start() implementation.
Several important concerns need to be addressed:
- No graceful shutdown mechanism
- Hard-coded batch limit
- Missing error handling
- No backpressure mechanism
Consider implementing these improvements:
+const DEFAULT_BATCH_LIMIT: usize = 10; + pub fn start(&mut self) { let mut name_server_runtime_inner = self.name_server_runtime_inner.clone(); let mut rx = self.rx.take().expect("rx is None"); - let limit = 10; + let limit = name_server_runtime_inner + .name_server_config() + .get_unregister_batch_size() + .unwrap_or(DEFAULT_BATCH_LIMIT); + + let (shutdown_tx, mut shutdown_rx) = tokio::sync::oneshot::channel(); + self.shutdown_sender = Some(shutdown_tx); + tokio::spawn(async move { loop { let mut unregistration_requests = Vec::with_capacity(limit); tokio::select! { + _ = &mut shutdown_rx => { + debug!("Batch unregistration service shutting down"); + break; + } _ = rx.recv_many(&mut unregistration_requests,limit) => { - name_server_runtime_inner.route_info_manager_mut().un_register_broker(unregistration_requests); + if let Err(e) = name_server_runtime_inner + .route_info_manager_mut() + .un_register_broker(unregistration_requests) + { + error!("Failed to unregister brokers: {}", e); + // Implement backoff/retry strategy here + tokio::time::sleep(Duration::from_secs(1)).await; + } } } } }); }Additionally:
- Add a corresponding
stop()method for graceful shutdown- Consider implementing a backoff strategy for error cases
- Add metrics for monitoring batch processing performance
- Consider adding a timeout for batch collection to ensure timely processing even with partial batches
Let's verify the error handling in the route_info_manager:
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Which Issue(s) This PR Fixes(Closes)
Fixes #2161
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