[ISSUE #1239]🔥Optimize KVConfigManager code⚡️ #1240
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WalkthroughThe pull request introduces significant changes across multiple files, primarily focusing on enhancing the mutability and management of configuration data within the Changes
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #1240 +/- ##
==========================================
+ Coverage 18.02% 18.26% +0.23%
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Files 428 428
Lines 53563 53595 +32
==========================================
+ Hits 9655 9789 +134
+ Misses 43908 43806 -102 ☔ View full report in Codecov by Sentry. 🚨 Try these New Features:
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (7)
rocketmq-namesrv/src/bootstrap.rs (1)
Line range hint
162-182: Consider enhancing error handling for server_configThe build implementation looks good with proper initialization order and consistent usage of
ArcMut. However, theunwrap()call onserver_configcould be improved:-server_config: Arc::new(self.server_config.unwrap()), +server_config: Arc::new(self.server_config.ok_or_else(|| { + std::io::Error::new(std::io::ErrorKind::InvalidInput, "server_config is required") +})?),rocketmq-namesrv/src/processor/default_request_processor.rs (1)
59-65: Consider documenting thread safety guaranteesGiven the significant change in the concurrency model (removing Arc), consider:
- Adding documentation comments explaining the thread safety guarantees and requirements
- Documenting any assumptions about how DefaultRequestProcessor instances should be used
- Adding runtime checks or assertions if necessary to prevent incorrect usage
rocketmq-namesrv/src/route/route_info_manager.rs (2)
Line range hint
1-1000: Document thread-safety guarantees and synchronization strategyThe codebase handles complex concurrent state management but lacks documentation about thread-safety guarantees. Consider:
- Adding documentation for thread-safety guarantees and synchronization strategy
- Documenting which methods require external synchronization
- Clarifying the ownership model and mutation rules for shared state
Example documentation structure:
/// RouteInfoManager provides thread-safe access to broker and topic routing information. /// /// # Thread Safety /// - All public methods are internally synchronized using parking_lot::RwLock /// - Concurrent calls to register_broker/un_register_broker are safe /// - Mutations to namesrv_config and remoting_client are protected by ArcMut /// /// # Synchronization Strategy /// - Read operations acquire shared locks /// - Write operations acquire exclusive locks /// - Broker status changes are atomic
Line range hint
1-1000: Consider architectural implications of increased mutabilityThe shift from
ArctoArcMutrepresents a significant architectural change that:
- Increases flexibility for runtime configuration changes
- May impact system predictability due to mutable shared state
- Could make reasoning about concurrent behavior more complex
Consider:
- Adding metrics/logging for configuration changes to aid debugging
- Implementing a change notification system for configuration updates
- Creating clear boundaries for where mutations can occur
rocketmq-namesrv/src/kvconfig/kvconfig_mananger.rs (3)
70-71: Avoid Cloning the Entire Configuration TableCloning the entire
HashMapinget_config_tablecan be inefficient, especially as the configuration grows. Consider providing methods to access the data without cloning, such as returning a read-only reference or implementing iterator methods for safer and more efficient access.You might adjust the method to return a guard or provide specific query functions:
pub fn get_config_table( &self, ) -> parking_lot::RwLockReadGuard<HashMap<CheetahString, HashMap<CheetahString, CheetahString>>> { self.config_table.read() }Or create methods to query specific configurations without exposing the entire table.
118-119: Improve Consistency in Parameter ReferencesThe
put_kv_configmethod takes ownership ofnamespace,key, andvalue, whereas theget_kvconfigmethod takes references tonamespaceandkey. For consistency and to avoid unnecessary cloning, consider using references input_kv_configif possible.Adjust the
put_kv_configmethod signature:- pub fn put_kv_config( - &mut self, - namespace: CheetahString, - key: CheetahString, - value: CheetahString, - ) { + pub fn put_kv_config( + &mut self, + namespace: &CheetahString, + key: &CheetahString, + value: &CheetahString, + ) {And update usage within the method accordingly.
Also applies to: 177-178
143-149: Simplify Namespace Existence Check indelete_kv_configInstead of checking
contains_keyand then unwrapping, you can useif letto streamline the logic and handle the case where the namespace does not exist.Apply this diff to simplify the code:
- if !config_table.contains_key(namespace) { - return; - } - let pre_value = config_table.get_mut(namespace).unwrap().remove(key); + if let Some(namespace_table) = config_table.get_mut(namespace) { + let pre_value = namespace_table.remove(key); + match pre_value { + None => {} + Some(value) => { + info!( + "deleteKVConfig delete a config item, Namespace: {} Key: {} Value: {}", + namespace, key, value + ) + } + } + } else { + return; + }
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📒 Files selected for processing (6)
rocketmq-namesrv/src/bootstrap.rs(3 hunks)rocketmq-namesrv/src/kvconfig/kvconfig_mananger.rs(5 hunks)rocketmq-namesrv/src/processor.rs(1 hunks)rocketmq-namesrv/src/processor/client_request_processor.rs(3 hunks)rocketmq-namesrv/src/processor/default_request_processor.rs(9 hunks)rocketmq-namesrv/src/route/route_info_manager.rs(1 hunks)
✅ Files skipped from review due to trivial changes (1)
- rocketmq-namesrv/src/processor.rs
🔇 Additional comments (13)
rocketmq-namesrv/src/processor/client_request_processor.rs (4)
23-23: LGTM! Import changes align with the new implementation.
The new imports support the transition to direct KVConfig access and mutable configuration management.
Also applies to: 35-35, 39-39
44-44: Verify thread safety with the new field types.
The changes from Arc to ArcMut for namesrv_config and removal of Arc<RwLock<>> for kvconfig_manager indicate a shift in concurrency strategy:
- Ensure that all access to
namesrv_configthroughArcMutis properly synchronized - Verify that
KVConfigManageris only accessed from a single thread or has internal synchronization
Also applies to: 47-47
53-54: LGTM! Constructor signature aligns with field changes.
The parameter types are correctly updated to match the new field types.
100-103: Simplified KVConfig access improves code clarity.
The direct access to kvconfig_manager without explicit locking simplifies the code. However:
- Ensure that
KVConfigManager::get_kvconfighas proper internal synchronization if needed - Consider adding error handling for the
get_kvconfigcall
rocketmq-namesrv/src/bootstrap.rs (1)
52-58: Verify thread safety after removing RwLock from KVConfigManager
The change from Arc<parking_lot::RwLock<KVConfigManager>> to direct KVConfigManager removes a synchronization layer. While this optimization can improve performance by reducing lock overhead, please ensure:
KVConfigManagerhas internal synchronization mechanisms- All concurrent access patterns are thread-safe
- No data races are possible in the new implementation
rocketmq-namesrv/src/processor/default_request_processor.rs (5)
65-65: Verify thread safety implications of removing Arc
The change from Arc<RwLock<KVConfigManager>> to KVConfigManager removes thread-safe sharing and synchronization mechanisms. Please verify that:
- The DefaultRequestProcessor is not shared between threads
- KVConfigManager's internal implementation ensures thread safety if needed
- This change doesn't introduce potential race conditions in concurrent request processing
Line range hint 203-209: LGTM: Constructor updated consistently
The constructor has been properly updated to match the new field type.
Line range hint 115-132: LGTM: Improved mutability handling and error messages
The changes correctly:
- Use
&mut selffor mutation - Utilize
CheetahStringfor static strings - Simplify KVConfig access
140-142: Verify concurrent access safety for read operations
The direct access to kvconfig_manager for read operations (get_kv_config and get_kv_list_by_namespace) has been simplified. Please ensure that:
- These read operations are safe in concurrent scenarios
- The KVConfigManager's internal implementation handles any necessary synchronization
Also applies to: 412-412
273-277: LGTM: Consistent access pattern update
The access to kvconfig_manager has been updated to match the new pattern while maintaining the same business logic.
rocketmq-namesrv/src/route/route_info_manager.rs (2)
80-81: Verify thread-safety with ArcMut usage
The change from Arc to ArcMut for namesrv_config and remoting_client enables mutable access from multiple threads. Ensure that all mutations are properly synchronized to prevent race conditions, especially in methods like register_broker and un_register_broker that modify shared state.
87-88: LGTM - Constructor signature updated correctly
The constructor signature has been properly updated to match the new field types, maintaining consistency with the ArcMut changes.
rocketmq-namesrv/src/kvconfig/kvconfig_mananger.rs (1)
188-270: Tests Look Good
The added tests cover the essential functionalities of the KVConfigManager. They help ensure that the configuration management behaves as expected.
| if let Some(config_table) = wrapper.config_table { | ||
| let mut table = self.config_table.write(); | ||
| table.extend(config_table); |
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Handle Potential Serialization and Deserialization Errors
Using unwrap() on serialization and deserialization operations can lead to a panic if an error occurs, such as corrupted data or IO issues. It's safer to handle these errors gracefully to maintain the stability of the application.
Apply this diff to handle errors properly:
--- a/kvconfig_mananger.rs
+++ b/kvconfig_mananger.rs
@@ -91,7 +91,12 @@
if let Ok(content) = result {
- let wrapper =
- SerdeJsonUtils::decode::<KVConfigSerializeWrapper>(content.as_bytes()).unwrap();
+ let wrapper = match SerdeJsonUtils::decode::<KVConfigSerializeWrapper>(content.as_bytes()) {
+ Ok(wrapper) => wrapper,
+ Err(err) => {
+ error!("Failed to deserialize KVConfig: {}", err);
+ return;
+ }
+ };
if let Some(config_table) = wrapper.config_table {
@@ -101,7 +106,12 @@
pub fn persist(&mut self) {
let wrapper =
KVConfigSerializeWrapper::new_with_config_table(self.config_table.write().clone());
- let content = serde_json::to_string(&wrapper).unwrap();
+ let content = match serde_json::to_string(&wrapper) {
+ Ok(content) => content,
+ Err(err) => {
+ error!("Failed to serialize KVConfig: {}", err);
+ return;
+ }
+ };
let result = FileUtils::string_to_file(Also applies to: 101-102
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Which Issue(s) This PR Fixes(Closes)
Fixes #1239
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These updates improve the overall performance and maintainability of the system, allowing for more dynamic runtime configurations.