[ISSUE #2029]💫Implement PopBufferMergeService#get_latest_offset #2030
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Actionable comments posted: 0
🧹 Nitpick comments (2)
rocketmq-broker/src/processor/processor_service/pop_buffer_merge_service.rs (2)
171-185: Add documentation and improve error handling.While the implementation is correct, consider these improvements:
- Add documentation comments explaining:
- The purpose of the method
- Parameter description
- Return value meaning (-1 vs valid offset)
- Consider adding debug/trace logging when returning -1 to aid in troubleshooting.
Example documentation:
+ /// Returns the latest offset for a given lock key. + /// + /// # Arguments + /// * `lock_key` - The lock key in format topic@cid@queueId + /// + /// # Returns + /// * `-1` if no offset exists or queue is empty + /// * The next begin offset from the last checkpoint otherwise #[inline] pub fn get_latest_offset(&self, lock_key: &CheetahString) -> i64 {
187-195: Add documentation and input validation.The method provides a convenient wrapper around get_latest_offset, but needs:
- Documentation explaining its purpose and parameters
- Input validation for queue_id (should be non-negative)
Consider this improved implementation:
+ /// Returns the latest offset for the given topic, consumer group, and queue ID combination. + /// + /// # Arguments + /// * `topic` - The topic name + /// * `group` - The consumer group name + /// * `queue_id` - The queue ID (must be non-negative) + /// + /// # Returns + /// * `-1` if no offset exists or queue is empty + /// * The next begin offset from the last checkpoint otherwise pub fn get_latest_offset_full( &self, topic: &CheetahString, group: &CheetahString, queue_id: i32, ) -> i64 { + if queue_id < 0 { + return -1; + } self.get_latest_offset(&CheetahString::from_string(KeyBuilder::build_polling_key( topic, group, queue_id, ))) }
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📒 Files selected for processing (1)
rocketmq-broker/src/processor/processor_service/pop_buffer_merge_service.rs(2 hunks)
🔇 Additional comments (1)
rocketmq-broker/src/processor/processor_service/pop_buffer_merge_service.rs (1)
26-26: LGTM!The KeyBuilder import is correctly added and will be used by the new get_latest_offset_full method.
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #2030 +/- ##
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- Coverage 28.45% 28.44% -0.01%
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Files 488 488
Lines 68818 68838 +20
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Hits 19583 19583
- Misses 49235 49255 +20 ☔ View full report in Codecov by Sentry. |
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Which Issue(s) This PR Fixes(Closes)
Fixes #2029
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New Features
PopBufferMergeServiceRefactor