[ISSUE #3527]⚡️Delegation pattern implementation with error handling for HA connections #3528
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…for HA connections
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WalkthroughThe changes implement the delegation pattern for Changes
Sequence Diagram(s)sequenceDiagram
participant AcceptSocketService
participant DefaultHAConnection
participant GeneralHAConnection
participant DefaultHAService
AcceptSocketService->>DefaultHAConnection: new()
DefaultHAConnection-->>AcceptSocketService: Result<DefaultHAConnection>
AcceptSocketService->>GeneralHAConnection: new_with_default_ha_connection()
AcceptSocketService->>GeneralHAConnection: start()
alt DefaultHAConnection present
GeneralHAConnection->>DefaultHAConnection: start()
DefaultHAConnection-->>GeneralHAConnection: Result<(), HAConnectionError>
else AutoSwitchHAConnection present
GeneralHAConnection->>AutoSwitchHAConnection: start()
AutoSwitchHAConnection-->>GeneralHAConnection: Result<(), HAConnectionError>
else None present
GeneralHAConnection-->>AcceptSocketService: Err("No HA connection set")
end
alt start() Ok
AcceptSocketService->>DefaultHAService: add_connection(general_conn)
else start() Err
AcceptSocketService->>AcceptSocketService: Log error
end
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Pull Request Overview
The PR implements the delegation pattern in the HA connection startup logic and adds error handling when accepting new HA connections.
- Implements
GeneralHAConnection::startto delegate to either default or auto-switch connections, returning an error if neither is set. - Updates the accept path in
default_ha_serviceto start theGeneralHAConnection, log failures, and only add the connection on success.
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| rocketmq-store/src/ha/general_ha_connection.rs | Adds the body for start, delegating to underlying connections and returning a clear error branch. |
| rocketmq-store/src/ha/default_ha_service.rs | Calls start on the new GeneralHAConnection, logs errors, and conditionally registers the connection. |
Comments suppressed due to low confidence (2)
rocketmq-store/src/ha/general_ha_connection.rs:66
- Add unit tests for
GeneralHAConnection::startto cover all branches (default, auto-switch, and error) to validate the new delegation logic.
if let Some(ref mut connection) = self.default_ha_connection {
rocketmq-store/src/ha/default_ha_service.rs:298
- [nitpick] Align the
if letformatting by removing extra spaces:if let Err(e) = general_conn.start().await { ... }to match project style conventions.
if let Err(e) = general_conn.start().await {
| if let Some(ref mut connection) = self.default_ha_connection { | ||
| connection.start().await | ||
| } else if let Some(ref mut connection) = self.auto_switch_ha_connection { | ||
| connection.start().await | ||
| } else { | ||
| Err(HAConnectionError::Connection( | ||
| "No HA connection set".to_string(), | ||
| )) |
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[nitpick] The nested if let blocks could be refactored into a single match on both Options (or by chaining with or) to reduce duplication and improve clarity.
| if let Some(ref mut connection) = self.default_ha_connection { | |
| connection.start().await | |
| } else if let Some(ref mut connection) = self.auto_switch_ha_connection { | |
| connection.start().await | |
| } else { | |
| Err(HAConnectionError::Connection( | |
| "No HA connection set".to_string(), | |
| )) | |
| match (&mut self.default_ha_connection, &mut self.auto_switch_ha_connection) { | |
| (Some(connection), _) => connection.start().await, | |
| (_, Some(connection)) => connection.start().await, | |
| (None, None) => Err(HAConnectionError::Connection( | |
| "No HA connection set".to_string(), | |
| )), |
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| default_ha_service.add_connection(general_conn).await; | ||
| let mut general_conn = GeneralHAConnection::new_with_default_ha_connection(default_conn); | ||
| if let Err(e) = general_conn.start().await { | ||
| error!("Error starting HAService: {}", e); |
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On startup failure, the connection isn't explicitly closed or cleaned up. Consider closing the underlying stream or reporting the error upstream to avoid resource leaks.
| error!("Error starting HAService: {}", e); | |
| error!("Error starting HAService: {}", e); | |
| // Explicitly clean up resources to prevent leaks | |
| general_conn.cleanup().await; |
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Actionable comments posted: 0
🧹 Nitpick comments (1)
rocketmq-store/src/ha/default_ha_service.rs (1)
301-301: Consider improving the success log message for clarity.The success log message "HAService accept new connection" duplicates the message from line 292. Consider making it more specific to indicate the connection was successfully started.
- info!("HAService accept new connection, {}", addr); + info!("HAService successfully started connection, {}", addr);
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📒 Files selected for processing (2)
rocketmq-store/src/ha/default_ha_service.rs(1 hunks)rocketmq-store/src/ha/general_ha_connection.rs(1 hunks)
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🔇 Additional comments (2)
rocketmq-store/src/ha/general_ha_connection.rs (1)
66-74: Excellent implementation of the delegation pattern with proper error handling.The delegation logic correctly prioritizes
default_ha_connectionoverauto_switch_ha_connectionand provides a clear error message when neither connection type is configured. The implementation follows a clean fallback strategy that aligns with the PR objectives.rocketmq-store/src/ha/default_ha_service.rs (1)
297-303: Robust error handling implementation for connection lifecycle management.The enhancement correctly ensures that only successfully started connections are added to the service. The asynchronous error handling prevents failed connections from being managed, which improves the overall reliability of the HA service.
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #3528 +/- ##
==========================================
- Coverage 26.18% 26.18% -0.01%
==========================================
Files 556 556
Lines 78641 78651 +10
==========================================
Hits 20593 20593
- Misses 58048 58058 +10 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Which Issue(s) This PR Fixes(Closes)
Fixes #3527
Brief Description
How Did You Test This Change?
Summary by CodeRabbit
Bug Fixes
New Features