[ISSUE #2211]🚨Implement DefaultMappedFile get_last_modified_timestamp and slice_byte_buffer🍻 #2212
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… and slice_byte_buffer🍻
WalkthroughThe pull request introduces type-related changes across multiple files in the RocketMQ store module, primarily focusing on converting integer types from signed ( Changes
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #2212 +/- ##
==========================================
- Coverage 28.73% 28.72% -0.01%
==========================================
Files 498 498
Lines 71102 71113 +11
==========================================
Hits 20430 20430
- Misses 50672 50683 +11 ☔ View full report in Codecov by Sentry. |
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Actionable comments posted: 1
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📒 Files selected for processing (3)
rocketmq-store/src/consume_queue/mapped_file_queue.rs(1 hunks)rocketmq-store/src/log_file/mapped_file.rs(1 hunks)rocketmq-store/src/log_file/mapped_file/default_mapped_file_impl.rs(4 hunks)
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🔇 Additional comments (4)
rocketmq-store/src/consume_queue/mapped_file_queue.rs (1)
409-409: LGTM! Type consistency improvementThe removal of explicit casting aligns with the broader changes to use unsigned integers for timestamps consistently across the codebase.
rocketmq-store/src/log_file/mapped_file/default_mapped_file_impl.rs (2)
72-72: LGTM! Type safety improvementChanged
store_timestampfromAtomicI64toAtomicU64to prevent negative timestamps and improve type safety.
534-537: Performance improvement in slice_byte_bufferReturning a direct slice reference
&[u8]instead of creating a newBytesinstance eliminates unnecessary allocation and copying.rocketmq-store/src/log_file/mapped_file.rs (1)
380-392: LGTM! Comprehensive type safety improvementsThe changes to the trait methods improve the API in several ways:
slice_byte_buffernow returns&[u8]for better performance- Timestamp methods now return
u64for improved type safety- Consistent use of unsigned integers for all timestamp operations
These changes form a cohesive improvement to the codebase's type safety and performance.
| fn get_last_modified_timestamp(&self) -> u64 { | ||
| self.file | ||
| .metadata() | ||
| .unwrap() | ||
| .modified() | ||
| .unwrap() | ||
| .elapsed() | ||
| .unwrap() | ||
| .as_millis() as u64 |
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💡 Codebase verification
Consider improving timestamp implementation robustness
The current implementation has two potential issues:
- Multiple
unwrap()calls could cause panics if file metadata is inaccessible - Using
elapsed()from current time may not be the most reliable approach for file timestamps
Consider using SystemTime::duration_since(UNIX_EPOCH) and proper error handling:
fn get_last_modified_timestamp(&self) -> Result<u64, std::io::Error> {
self.file
.metadata()?
.modified()?
.duration_since(std::time::UNIX_EPOCH)
.map(|d| d.as_millis() as u64)
.map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))
}🔗 Analysis chain
Verify timestamp calculation accuracy
The implementation of get_last_modified_timestamp uses elapsed() which measures time since the file was last modified. This could potentially overflow for very old files.
Run this script to check for potential timestamp overflow issues:
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check for files that might cause timestamp overflow
# Find files older than 5 years (157680000000 milliseconds)
find . -type f -mtime +1825 -exec stat -c "File: %n, Last modified: %y" {} \;
Length of output: 82
Script:
#!/bin/bash
# Search for similar timestamp implementations and tests
echo "=== Similar timestamp implementations ==="
rg -B 2 -A 2 "\.modified\(\).*\.elapsed\(\)" --type rust
echo -e "\n=== Test cases for timestamp handling ==="
rg -B 2 -A 2 "get_last_modified_timestamp" --type rust test
echo -e "\n=== Error handling patterns ==="
ast-grep --pattern 'unwrap()' src/log_file/mapped_file/default_mapped_file_impl.rs
Length of output: 619
Script:
#!/bin/bash
# Find the correct file path first
echo "=== Locating the file ==="
fd "default_mapped_file_impl.rs"
# Once we find it, analyze the implementation
echo -e "\n=== Similar timestamp implementations in the codebase ==="
rg -B 2 -A 2 "modified\(\)" --type rust
echo -e "\n=== Usage of get_last_modified_timestamp ==="
rg -B 2 -A 2 "get_last_modified_timestamp" --type rust
Length of output: 2341
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Which Issue(s) This PR Fixes(Closes)
Fixes #2211
Brief Description
How Did You Test This Change?
Summary by CodeRabbit
Type Safety Improvements
Performance Optimizations