[ISSUE #1730]⚡️Optimize Replace String with CheetahString in PopCheckPoint #1733
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (2)
rocketmq-store/src/pop/pop_check_point.rs (2)
87-97: Consider adding error logging in parse_re_put_times.When parsing fails, the method silently returns
i32::MAX. Consider logging the parsing error for debugging purposes.pub fn parse_re_put_times(&self) -> i32 { if self.re_put_times.is_none() { return 0; } if let Some(ref re_put_times) = self.re_put_times { - if let Ok(parsed) = re_put_times.parse::<i32>() { + match re_put_times.parse::<i32>() { + Ok(parsed) => parsed, + Err(e) => { + log::warn!("Failed to parse re_put_times: {}, error: {}", re_put_times, e); + i32::MAX + } + } - return parsed; - } } - i32::MAX }
344-363: Consider adding performance regression tests.While the functionality is well-tested, consider adding performance regression tests to validate the CheetahString optimization.
#[cfg(test)] mod benchmarks { use super::*; use test::Bencher; #[bench] fn bench_pop_check_point_serialization(b: &mut Bencher) { let p = PopCheckPoint { // ... test data ... }; b.iter(|| { serde_json::to_string(&p).unwrap() }); } }
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rocketmq-store/src/pop/pop_check_point.rs(1 hunks)
🔇 Additional comments (4)
rocketmq-store/src/pop/pop_check_point.rs (4)
1-23: LGTM! Clean imports and proper licensing.
The imports are well-organized and include the new CheetahString dependency. The Apache 2.0 license header is properly maintained.
24-50: LGTM! Clean struct definition with proper derive macros.
The struct definition is well-organized with proper serde annotations and the new Default derive macro adds convenience.
135-407: LGTM! Comprehensive test coverage.
The test suite thoroughly covers:
- Core functionality
- Edge cases
- Serialization/deserialization
- Optional fields
- String conversions
- Ordering and comparison
39-49: Verify performance impact of CheetahString.
The change from String to CheetahString for fields like topic, cid, broker_name, and re_put_times should be validated for performance improvements.
✅ Verification successful
Let me analyze the findings and generate a final response:
CheetahString usage appears to be consistent with performance goals
The codebase shows extensive and consistent usage of CheetahString across critical components including:
- Message queue operations
- Topic management
- Consumer/producer data structures
- Broker communications
- Configuration handling
The README.md confirms the project's focus on "high-performance" and the change from String to CheetahString aligns with this goal by:
- Providing consistent string handling across the codebase
- Being used in performance-critical paths like message processing and broker communications
- Following the established pattern used in core components
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Search for other CheetahString usage patterns and benchmarks in the codebase
# Look for existing CheetahString benchmarks
rg -l "bench.*CheetahString"
# Look for other CheetahString usage patterns
ast-grep --pattern 'CheetahString::from($_)'
# Look for any performance-related comments or documentation
rg -i "performance|benchmark" README.md
Length of output: 44560
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🧹 Outside diff range and nitpick comments (1)
rocketmq-store/src/pop/pop_check_point.rs (1)
114-131: Consider improving Display implementation readabilityThe Display implementation could be more readable by breaking the format string into multiple lines and using proper indentation.
Consider this improvement:
- write!( - f, - "PopCheckPoint [start_offset={}, pop_time={}, invisible_time={}, bit_map={}, num={}, \ - queue_id={}, topic={}, cid={}, revive_offset={}, queue_offset_diff={:?}, \ - broker_name={}, re_put_times={}]", + write!( + f, + "PopCheckPoint [\n \ + start_offset={},\n \ + pop_time={},\n \ + invisible_time={},\n \ + bit_map={},\n \ + num={},\n \ + queue_id={},\n \ + topic={},\n \ + cid={},\n \ + revive_offset={},\n \ + queue_offset_diff={:?},\n \ + broker_name={},\n \ + re_put_times={}\n\ + ]",
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rocketmq-store/src/pop/pop_check_point.rs(1 hunks)
🔇 Additional comments (4)
rocketmq-store/src/pop/pop_check_point.rs (4)
24-24: LGTM! Good addition of Default derive
Adding #[derive(Default)] is a good improvement that allows creating instances with default values more easily.
52-98: LGTM! Methods maintain backward compatibility
The implementation methods properly handle both old and new versions of checkpoints while maintaining clear error handling and documentation.
135-407: LGTM! Excellent test coverage
The test module is comprehensive and well-structured, covering:
- Core functionality
- Edge cases
- Serialization/deserialization
- Optional fields
- Display formatting
- Ordering implementations
20-20: LGTM! Optimization through CheetahString replacement
The replacement of String with CheetahString for fields like topic, cid, broker_name, and re_put_times aligns with the optimization objective. CheetahString is typically more efficient for short strings commonly used in message queues.
Let's verify the CheetahString usage pattern across the codebase:
Also applies to: 39-41, 47-49
✅ Verification successful
Based on the search results, I can see that CheetahString is consistently used across the codebase, particularly in broker-related components, for optimizing string handling in message queues. The replacement of String with CheetahString in pop_check_point.rs aligns with this pattern, as evidenced by similar usage in:
- Consumer/Producer management (
ConsumerManager,ProducerManager) - Message filtering (
ConsumerFilterData,ExpressionMessageFilter) - Client channel info (
ClientChannelInfo) - Message processing (
PopMessageProcessor,PullMessageProcessor)
The change is consistent with the codebase's string optimization pattern
The replacement of String with CheetahString in pop_check_point.rs follows the established pattern across the RocketMQ codebase where CheetahString is used for optimizing string operations in performance-critical message queue operations.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check if CheetahString is consistently used for similar fields in related structs
rg -l "struct.*\{" | xargs rg "String|CheetahString" -A 1 -B 1
Length of output: 67293
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (1)
rocketmq-store/src/pop/pop_check_point.rs (1)
135-407: Add performance comparison testsWhile the test coverage is comprehensive for functionality, consider adding performance comparison tests between
StringandCheetahStringimplementations to validate the optimization benefits.#[cfg(test)] mod benchmarks { use super::*; use criterion::{criterion_group, criterion_main, Criterion}; pub fn string_vs_cheetah_benchmark(c: &mut Criterion) { c.bench_function("pop_checkpoint_with_string", |b| { // Benchmark with String implementation }); c.bench_function("pop_checkpoint_with_cheetah", |b| { // Benchmark with CheetahString implementation }); } }
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rocketmq-store/src/pop/pop_check_point.rs(1 hunks)
🔇 Additional comments (2)
rocketmq-store/src/pop/pop_check_point.rs (2)
1-23: LGTM! Imports are appropriate for the changes
The license header is present and the imports, including the new CheetahString, are correctly specified.
24-50: Verify performance benefits of CheetahString
The conversion from String to CheetahString for fields topic, cid, broker_name, and re_put_times should be validated for performance improvements.
✅ Verification successful
Let me search for the CheetahString implementation and benchmarks to verify its performance benefits.
Let me try a different search strategy to find the CheetahString implementation and any performance-related code.
Let me search for the CheetahString implementation to understand its performance characteristics.
Based on the search results, I can now provide a final response about the CheetahString optimization:
CheetahString conversion is a valid optimization
The conversion from String to CheetahString is justified based on the codebase evidence:
- CheetahString is used extensively throughout the codebase for performance-critical operations, particularly in message processing paths
- It's used in memory-sensitive contexts like message stores, mapped files, and broker operations
- The codebase shows careful memory management with configurations like:
max_transfer_bytes_on_message_in_memoryaccess_message_in_memory_max_ratio- Memory-aware message processing logic
The conversion aligns with the project's overall optimization strategy for handling strings in a high-performance messaging system.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Search for CheetahString benchmarks or performance tests
# to validate the optimization benefits
# Look for benchmark tests
rg -l "bench|criterion|test.*performance" --type rust
# Look for CheetahString documentation or implementation
rg -A 5 "CheetahString" --type rust
Length of output: 98873
Script:
#!/bin/bash
# Search for CheetahString implementation and benchmarks
rg -A 10 "pub struct CheetahString" --type rust
rg -A 10 "impl CheetahString" --type rust
# Look for any benchmark files that test CheetahString
rg -l "CheetahString.*bench" --type rust
Length of output: 136
Script:
#!/bin/bash
# Search for CheetahString crate/module
fd -e rs -e toml cheetah_string
# Look for any performance or benchmark related files
rg -l "criterion|bench|#\[bench\]|test.*performance" --type rust
# Search for CheetahString usage with imports
rg "use.*CheetahString" --type rust
Length of output: 34610
Script:
#!/bin/bash
# Search for CheetahString implementation
fd -e rs cheetah_string
rg -A 10 "struct CheetahString" --type rust
# Look for any performance-related comments or documentation
rg -B 2 -A 5 "CheetahString.*performance|optimize|memory" --type rust
Length of output: 29767
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🧹 Outside diff range and nitpick comments (1)
rocketmq-store/src/pop/pop_check_point.rs (1)
138-410: Consider adding performance comparison testsWhile the test coverage is comprehensive for functionality, consider adding benchmark tests to validate the performance improvements from using
CheetahStringoverString.Example benchmark test structure:
#[cfg(test)] mod benchmarks { use test::Bencher; #[bench] fn bench_checkpoint_operations(b: &mut Bencher) { // Setup checkpoint with large strings let checkpoint = PopCheckPoint { topic: CheetahString::from("very_long_topic_name"), // ... other fields }; b.iter(|| { // Perform operations that heavily use string fields checkpoint.parse_re_put_times() }); } }
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rocketmq-store/src/pop/pop_check_point.rs(1 hunks)
🔇 Additional comments (3)
rocketmq-store/src/pop/pop_check_point.rs (3)
24-50: LGTM! Well-structured changes with improved ergonomics
The conversion to CheetahString is consistent across all string fields, and the addition of the Default trait is a good improvement. The serde attributes are properly maintained.
61-80: Proper bounds checking in place
The bounds check in index_of_ack method effectively prevents potential panic, addressing the previous review comment.
20-20: Verify CheetahString performance characteristics
The change from String to CheetahString aligns with the optimization goal. Let's verify the implementation details.
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🧹 Outside diff range and nitpick comments (1)
rocketmq-store/src/pop/pop_check_point.rs (1)
135-407: Consider adding CheetahString-specific test casesWhile the test coverage is comprehensive for general functionality, consider adding tests specific to CheetahString behavior:
- Memory allocation patterns
- Performance comparison with String
- Unicode handling
- Very large string handling
Add the following test:
#[test] fn test_cheetah_string_specific_behavior() { let checkpoint = PopCheckPoint { topic: CheetahString::from("🚀"), // Unicode test cid: CheetahString::from("a".repeat(10000)), // Large string test ..Default::default() }; // Add assertions for expected behavior }
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📒 Files selected for processing (1)
rocketmq-store/src/pop/pop_check_point.rs(1 hunks)
🔇 Additional comments (3)
rocketmq-store/src/pop/pop_check_point.rs (3)
20-20: Verify CheetahString dependency declaration
The code introduces CheetahString as a replacement for String types.
✅ Verification successful
Let me verify the exact dependency declaration in Cargo.toml to ensure it's properly configured.
CheetahString dependency is properly configured
The cheetah-string dependency is correctly declared in Cargo.toml with version 0.1.6 and the necessary features ("serde" and "bytes") enabled, which aligns with its usage in the pop_check_point.rs file.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check if CheetahString dependency is properly declared
rg -l "cheetah.*string.*=.*\".*\"" Cargo.toml
Length of output: 56
Script:
#!/bin/bash
# Check the actual CheetahString dependency declaration
rg "cheetah.*string" -A 1 -B 1 Cargo.toml
Length of output: 115
24-50: Consider documenting performance implications of CheetahString
The change from String to CheetahString is aligned with the optimization goal. However, it would be beneficial to document the expected performance improvements and any trade-offs.
Consider adding documentation comments that explain:
- Why CheetahString was chosen over String
- The performance benefits in the context of PopCheckPoint
- Any memory/CPU trade-offs
87-97: Verify CheetahString parsing behavior matches String
The parse_re_put_times method relies on CheetahString's parse implementation. We should ensure it maintains the same behavior as String's parse implementation, especially for edge cases.
✅ Verification successful
Based on the search results, I can see that CheetahString is a custom string type used throughout the codebase, and specifically in the parse_re_put_times method, it's using the standard parse trait implementation. Looking at the implementation and tests in pop_check_point.rs, we can see that the parsing behavior matches exactly with String's parse implementation:
- Valid numbers are parsed correctly (test case with "5")
- Invalid strings return i32::MAX (test case with "invalid")
- None case returns 0
Therefore, I can generate the final response:
CheetahString parsing behavior verified as correct
The parse_re_put_times implementation correctly matches String's parse behavior:
- Successfully parses valid numbers
- Returns i32::MAX for invalid strings
- Returns 0 for None case
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Look for other CheetahString parse implementations for consistency
ast-grep --pattern 'CheetahString::from($_).parse::<$_>()'
Length of output: 60
Script:
#!/bin/bash
# Let's first check if we're using the correct pattern by searching for any parse calls on CheetahString
ast-grep --pattern '$_.parse::<$_>()'
# Also search for the type definition and implementation of CheetahString
rg "CheetahString" -A 5
Length of output: 65780
| cid: CheetahString::from(""), | ||
| revive_offset: 0, | ||
| queue_offset_diff: vec![], | ||
| broker_name: None, | ||
| re_put_times: None, | ||
| }; | ||
| let p2 = PopCheckPoint { | ||
| start_offset: 20, | ||
| ..p1.clone() | ||
| }; | ||
| assert!(p1.partial_cmp(&p2).unwrap() == Ordering::Less); | ||
| } | ||
|
|
||
| #[test] | ||
| fn pop_check_point_equality_works_correctly() { | ||
| let p1 = PopCheckPoint { | ||
| start_offset: 10, | ||
| pop_time: 0, | ||
| invisible_time: 0, | ||
| bit_map: 0, | ||
| num: 0, | ||
| queue_id: 0, | ||
| topic: CheetahString::from(""), | ||
| cid: CheetahString::from(""), | ||
| revive_offset: 0, | ||
| queue_offset_diff: vec![], | ||
| broker_name: None, | ||
| re_put_times: None, | ||
| }; | ||
| let p2 = PopCheckPoint { | ||
| start_offset: 10, | ||
| ..p1.clone() | ||
| }; | ||
| assert_eq!(p1, p2); | ||
| } | ||
|
|
||
| #[test] | ||
| fn pop_check_point_serialization_works_correctly() { | ||
| let p = PopCheckPoint { | ||
| start_offset: 10, | ||
| pop_time: 20, | ||
| invisible_time: 30, | ||
| bit_map: 40, | ||
| num: 50, | ||
| queue_id: 60, | ||
| topic: CheetahString::from("test_topic"), | ||
| cid: CheetahString::from("test_cid"), | ||
| revive_offset: 70, | ||
| queue_offset_diff: vec![1, 2, 3], | ||
| broker_name: Some(CheetahString::from("test_broker")), | ||
| re_put_times: Some(CheetahString::from("test_reput")), | ||
| }; | ||
| let serialized = serde_json::to_string(&p).unwrap(); | ||
| let deserialized: PopCheckPoint = serde_json::from_str(&serialized).unwrap(); | ||
| assert_eq!(p, deserialized); | ||
| } | ||
|
|
||
| #[test] | ||
| fn pop_check_point_deserialization_handles_missing_optional_fields() { | ||
| let data = r#"{ | ||
| "so": 10, | ||
| "pt": 20, | ||
| "it": 30, | ||
| "bm": 40, | ||
| "n": 50, | ||
| "q": 60, | ||
| "t": "test_topic", | ||
| "c": "test_cid", | ||
| "ro": 70, | ||
| "d": [1, 2, 3] | ||
| }"#; | ||
| let deserialized: PopCheckPoint = serde_json::from_str(data).unwrap(); | ||
| assert_eq!(deserialized.broker_name, None); | ||
| assert_eq!(deserialized.re_put_times, None); | ||
| } | ||
|
|
||
| #[test] | ||
| fn pop_check_point_display_formats_correctly() { | ||
| let p = PopCheckPoint { | ||
| start_offset: 10, | ||
| pop_time: 20, | ||
| invisible_time: 30, | ||
| bit_map: 40, | ||
| num: 50, | ||
| queue_id: 60, | ||
| topic: CheetahString::from("test_topic"), | ||
| cid: CheetahString::from("test_cid"), | ||
| revive_offset: 70, | ||
| queue_offset_diff: vec![1, 2, 3], | ||
| broker_name: Some(CheetahString::from("test_broker")), | ||
| re_put_times: Some(CheetahString::from("test_reput")), | ||
| }; | ||
| let display = format!("{}", p); | ||
| let expected = "PopCheckPoint [start_offset=10, pop_time=20, invisible_time=30, \ | ||
| bit_map=40, num=50, queue_id=60, topic=test_topic, cid=test_cid, \ | ||
| revive_offset=70, queue_offset_diff=[1, 2, 3], broker_name=test_broker, \ | ||
| re_put_times=test_reput]"; | ||
| assert_eq!(display, expected); | ||
| } | ||
| } |
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💡 Codebase verification
Test code needs to be updated to use CheetahString
The codebase already uses CheetahString in production code, but the test code in pop_message_processor.rs still uses String for creating PopCheckPoint instances. This needs to be fixed for consistency.
- rocketmq-broker/src/processor/pop_message_processor.rs: Update test cases to use CheetahString instead of String when creating PopCheckPoint instances
🔗 Analysis chain
Verify impact on dependent modules
The change from String to CheetahString might affect modules that interact with PopCheckPoint.
Let me check the usage of PopCheckPoint in the pop_message_processor.rs to understand the impact.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Find all files that use PopCheckPoint
rg -l "PopCheckPoint" --type rust
# Check for potential String to CheetahString conversion points
rg "String.*PopCheckPoint|PopCheckPoint.*String" --type rust
Length of output: 308
Script:
#!/bin/bash
# Check the context around the String usage
rg -A 5 -B 5 "gen_ck_unique_id" rocketmq-broker/src/processor/pop_message_processor.rs
# Check if CheetahString is used in pop_message_processor.rs
rg "CheetahString" rocketmq-broker/src/processor/pop_message_processor.rs
Length of output: 1620
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Actionable comments posted: 1
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📒 Files selected for processing (1)
rocketmq-store/src/pop/pop_check_point.rs(1 hunks)
🔇 Additional comments (3)
rocketmq-store/src/pop/pop_check_point.rs (3)
61-80: Bounds check properly implemented in index_of_ack.
The implementation now safely handles out-of-bounds cases, addressing the previous review comment about potential panics.
103-136: LGTM! Comprehensive trait implementations.
The trait implementations are well-structured and handle all cases correctly, including proper formatting of optional fields in the Display implementation.
138-409: LGTM! Comprehensive test coverage with proper type usage.
The test suite is thorough and covers:
- All core functionality
- Edge cases and error conditions
- Proper serialization/deserialization
- Optional field handling
- Correct usage of CheetahString throughout
| use cheetah_string::CheetahString; | ||
| use serde::Deserialize; | ||
| use serde::Serialize; | ||
|
|
||
| #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Default)] | ||
| pub struct PopCheckPoint { | ||
| #[serde(rename = "so")] | ||
| pub start_offset: i64, | ||
| #[serde(rename = "pt")] | ||
| pub pop_time: i64, | ||
| #[serde(rename = "it")] | ||
| pub invisible_time: i64, | ||
| #[serde(rename = "bm")] | ||
| pub bit_map: i32, | ||
| #[serde(rename = "n")] | ||
| pub num: u8, | ||
| #[serde(rename = "q")] | ||
| pub queue_id: i32, | ||
| #[serde(rename = "t")] | ||
| pub topic: CheetahString, | ||
| #[serde(rename = "c")] | ||
| pub cid: CheetahString, | ||
| #[serde(rename = "ro")] | ||
| pub revive_offset: i64, | ||
| #[serde(rename = "d")] | ||
| pub queue_offset_diff: Vec<i32>, | ||
| #[serde(rename = "bn")] | ||
| pub broker_name: Option<CheetahString>, | ||
| #[serde(rename = "rp")] | ||
| pub re_put_times: Option<CheetahString>, | ||
| } |
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💡 Codebase verification
Update needed: Test in pop_message_processor.rs needs to be updated for CheetahString
The migration to CheetahString is incomplete. While the struct definition has been updated, there's a test in rocketmq-broker/src/processor/pop_message_processor.rs that still uses String in the test case gen_ck_unique_id_formats_correctly. This test needs to be updated to use CheetahString for consistency.
rocketmq-broker/src/processor/pop_message_processor.rs: Update the test case to useCheetahStringinstead ofStringfor fields:topiccidbroker_name
🔗 Analysis chain
LGTM! Consistent type changes with proper serialization.
The migration from String to CheetahString is implemented consistently across all string fields while maintaining proper serialization attributes.
Let's verify the CheetahString usage across the codebase:
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify consistent usage of CheetahString with PopCheckPoint
# Check for any remaining String usage with PopCheckPoint
rg "String.*PopCheckPoint|PopCheckPoint.*String" --type rust
# Check for CheetahString usage patterns
rg "CheetahString.*PopCheckPoint|PopCheckPoint.*CheetahString" --type rust
Length of output: 254
Script:
#!/bin/bash
# Let's verify the usage more thoroughly
# Check all files that reference PopCheckPoint
rg "PopCheckPoint" --type rust -l
# Check the implementation of gen_ck_unique_id to understand the String usage
rg -A 10 "gen_ck_unique_id" --type rust
# Look for any test files related to PopCheckPoint
fd "test.*rs" --type f --exec rg "PopCheckPoint" {}
Length of output: 2653
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🧹 Outside diff range and nitpick comments (2)
rocketmq-broker/src/processor/pop_message_processor.rs (2)
145-145: UseCheetahString::from_static_str()for static test dataFor better performance with static test data, consider using
from_static_str()instead offrom(). This is consistent with the usage in other test cases above.- topic: CheetahString::from("test_topic"), + topic: CheetahString::from_static_str("test_topic"), - cid: CheetahString::from("test_cid"), + cid: CheetahString::from_static_str("test_cid"), - broker_name: Some(CheetahString::from("test_broker")), + broker_name: Some(CheetahString::from_static_str("test_broker")),Also applies to: 148-148, 153-153
Line range hint
145-157: Add test cases for edge casesThe current test only covers the happy path. Consider adding test cases for:
Nonebroker_name- Empty strings for topic and cid
- Maximum length strings to ensure no formatting issues
Here's a suggested additional test case for
Nonebroker_name:#[test] fn gen_ck_unique_id_formats_correctly_with_none_broker() { let ck = PopCheckPoint { topic: CheetahString::from_static_str("test_topic"), queue_id: 1, start_offset: 456, cid: CheetahString::from_static_str("test_cid"), revive_offset: 0, pop_time: 789, invisible_time: 0, bit_map: 0, broker_name: None, num: 0, queue_offset_diff: vec![], re_put_times: None, }; let result = PopMessageProcessor::gen_ck_unique_id(&ck); let expected = "test_topic@1@456@test_cid@789@null@ck"; assert_eq!(result, expected); }
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rocketmq-broker/src/processor/pop_message_processor.rs(1 hunks)
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rocketmq-broker/src/processor/pop_message_processor.rs (1)
Line range hint 145-157: Verify performance improvements with CheetahString
Since this change is part of an optimization effort, it would be valuable to measure the performance impact.
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #1733 +/- ##
=======================================
Coverage 28.07% 28.08%
=======================================
Files 466 466
Lines 64163 64167 +4
=======================================
+ Hits 18016 18019 +3
- Misses 46147 46148 +1 ☔ View full report in Codecov by Sentry. |
Which Issue(s) This PR Fixes(Closes)
Fixes #1730
Brief Description
How Did You Test This Change?
Summary by CodeRabbit
New Features
CheetahString.PopCheckPointstruct.Bug Fixes
index_of_ackmethod with bounds checking.