[ISSUE #1000]✨Add RocketMQTokioRwLock and RocketMQTokioMutex for rocketmq crate🎨 #1001
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WalkthroughThe changes introduce a new module, Changes
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Actionable comments posted: 9
🧹 Outside diff range and nitpick comments (6)
rocketmq/src/lib.rs (3)
17-17: Approve new module addition and suggest documentation.The addition of the
rocketmq_tokio_lockmodule aligns with the PR objectives. This module likely contains the new synchronization primitivesRocketMQTokioMutexandRocketMQTokioRwLock.Consider adding a brief doc comment above this line to explain the purpose of this module, e.g.:
/// Module containing Tokio-based synchronization primitives for RocketMQ. pub mod rocketmq_tokio_lock;
21-21: Approve re-export and suggest documentation.The re-export of
RocketMQTokioMuteximproves the ergonomics of the crate by allowing users to access this type directly from the crate root.Consider adding a brief doc comment above this line to explain the purpose of this type, e.g.:
/// A Tokio-based mutex for use in RocketMQ operations. pub use rocketmq_tokio_lock::RocketMQTokioMutex;
22-22: Approve re-export and suggest documentation.The re-export of
RocketMQTokioRwLockis consistent with the previous re-export and provides easy access to this type from the crate root.Consider adding a brief doc comment above this line to explain the purpose of this type, e.g.:
/// A Tokio-based read-write lock for use in RocketMQ operations. pub use rocketmq_tokio_lock::RocketMQTokioRwLock;rocketmq/src/rocketmq_tokio_lock.rs (3)
21-23: Consider derivingDebugandCloneforRocketMQTokioRwLock.Currently,
RocketMQTokioRwLockdoes not implement theDebugorClonetraits. Implementing these traits can enhance usability, especially when debugging or when instances of the lock need to be cloned.You can derive these traits as follows:
+#[derive(Debug, Clone)] pub struct RocketMQTokioRwLock<T: ?Sized> { lock: tokio::sync::RwLock<T>, }
139-141: Consider derivingDebugandCloneforRocketMQTokioMutex.Similarly to
RocketMQTokioRwLock, implementingDebugandCloneforRocketMQTokioMuteximproves usability.You can derive these traits as follows:
+#[derive(Debug, Clone)] pub struct RocketMQTokioMutex<T: ?Sized> { lock: tokio::sync::Mutex<T>, }
299-302: Potential unintended sleep duration in testtry_write_timeout_fails_after_timeout.In the test, the sleep duration is set to 10 milliseconds, but the timeout for acquiring the write lock is 2 milliseconds. This may lead to flaky tests due to tight timing.
Consider increasing the sleep duration or adjusting the timeout to ensure consistent test results.
tokio::spawn(async move { let write_guard = lock.read().await; tx.send(()).unwrap(); - tokio::time::sleep(Duration::from_millis(10)).await; + tokio::time::sleep(Duration::from_millis(50)).await; drop(write_guard); });And adjust the timeout:
let write_guard = arc.try_write_timeout(Duration::from_millis(2)).await; +// Increase timeout to reduce flakiness +let write_guard = arc.try_write_timeout(Duration::from_millis(20)).await; assert!(write_guard.is_none());
| pub mod rocketmq_tokio_lock; | ||
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| /// Re-export rocketmq main. | ||
| pub use rocketmq::main; | ||
| pub use rocketmq_tokio_lock::RocketMQTokioMutex; | ||
| pub use rocketmq_tokio_lock::RocketMQTokioRwLock; |
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💡 Codebase verification
Tests for RocketMQTokioMutex and RocketMQTokioRwLock are missing.
While the implementation of the new synchronization primitives has been added, there are no corresponding unit tests to verify their functionality. Please add comprehensive tests to ensure their reliability and correctness.
🔗 Analysis chain
Verify implementation and suggest testing.
The changes successfully introduce the new synchronization primitives as outlined in the PR objectives. The additions are consistent with the existing code structure and improve the crate's API.
To ensure the correctness and completeness of the implementation:
- Verify the implementation of
RocketMQTokioMutexandRocketMQTokioRwLockin therocketmq_tokio_lockmodule. - Ensure comprehensive unit tests are in place for these new types.
Run the following script to check for the implementation and tests:
If the implementation or tests are missing, please add them to ensure the reliability and correctness of these new synchronization primitives.
rocketmq/src/rocketmq_tokio_lock.rs
Outdated
| tokio::spawn(async move { | ||
| let _read_guard = lock.write().await; | ||
| tx.send(()).unwrap(); | ||
| tokio::time::sleep(Duration::from_millis(10)).await; | ||
| drop(_read_guard); | ||
| }); | ||
| rx.await.unwrap(); | ||
| let read_guard = arc.try_read_timeout(Duration::from_millis(2)).await; | ||
| assert!(read_guard.is_none()); | ||
| } | ||
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| #[tokio::test] | ||
| async fn try_write_timeout_succeeds_within_timeout() { | ||
| let lock = RocketMQTokioRwLock::new(5); | ||
| let write_guard = lock.try_write_timeout(Duration::from_millis(100)).await; | ||
| assert!(write_guard.is_some()); | ||
| *write_guard.unwrap() = 10; | ||
| assert_eq!(*lock.read().await, 10); | ||
| } | ||
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| #[tokio::test] | ||
| async fn try_write_timeout_fails_after_timeout() { | ||
| let lock = Arc::new(RocketMQTokioRwLock::new(5)); | ||
| let arc = lock.clone(); | ||
| let (tx, rx) = tokio::sync::oneshot::channel(); | ||
| tokio::spawn(async move { | ||
| let write_guard = lock.read().await; | ||
| tx.send(()).unwrap(); | ||
| tokio::time::sleep(Duration::from_millis(10)).await; | ||
| drop(write_guard); | ||
| }); | ||
| rx.await.unwrap(); | ||
| let write_guard = arc.try_write_timeout(Duration::from_millis(2)).await; | ||
| assert!(write_guard.is_none()); | ||
| } | ||
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| #[tokio::test] | ||
| async fn new_creates_mutex_instance() { | ||
| let mutex = RocketMQTokioMutex::new(5); | ||
| let guard = mutex.lock().await; | ||
| assert_eq!(*guard, 5); | ||
| } | ||
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| #[tokio::test] | ||
| async fn lock_acquires_lock_and_allows_mutation() { | ||
| let mutex = RocketMQTokioMutex::new(5); | ||
| { | ||
| let mut guard = mutex.lock().await; | ||
| *guard = 10; | ||
| } | ||
| let guard = mutex.lock().await; | ||
| assert_eq!(*guard, 10); | ||
| } | ||
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| #[tokio::test] | ||
| async fn try_lock_acquires_lock_if_available() { | ||
| let mutex = RocketMQTokioMutex::new(5); | ||
| let guard = mutex.try_lock().await; | ||
| assert!(guard.is_some()); | ||
| assert_eq!(*guard.unwrap(), 5); | ||
| } | ||
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| #[tokio::test] | ||
| async fn try_lock_returns_none_if_unavailable() { | ||
| let mutex = Arc::new(RocketMQTokioMutex::new(5)); | ||
| let arc = mutex.clone(); | ||
| let (tx, rx) = tokio::sync::oneshot::channel(); | ||
| tokio::spawn(async move { | ||
| let _guard = arc.lock().await; | ||
| tx.send(()).unwrap(); | ||
| tokio::time::sleep(Duration::from_millis(10)).await; | ||
| }); | ||
| rx.await.unwrap(); | ||
| let guard = mutex.try_lock().await; | ||
| assert!(guard.is_none()); | ||
| } | ||
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| #[tokio::test] | ||
| async fn try_lock_timeout_succeeds_within_timeout() { | ||
| let mutex = RocketMQTokioMutex::new(5); | ||
| let guard = mutex.try_lock_timeout(Duration::from_millis(100)).await; | ||
| assert!(guard.is_some()); | ||
| assert_eq!(*guard.unwrap(), 5); | ||
| } | ||
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| #[tokio::test] | ||
| async fn try_lock_timeout_fails_after_timeout() { | ||
| let mutex = Arc::new(RocketMQTokioMutex::new(5)); | ||
| let arc = mutex.clone(); | ||
| let (tx, rx) = tokio::sync::oneshot::channel(); | ||
| tokio::spawn(async move { | ||
| let _guard = arc.lock().await; | ||
| tx.send(()).unwrap(); | ||
| tokio::time::sleep(Duration::from_millis(10)).await; | ||
| }); | ||
| rx.await.unwrap(); | ||
| let guard = mutex.try_lock_timeout(Duration::from_millis(2)).await; | ||
| assert!(guard.is_none()); | ||
| } | ||
| } |
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🛠️ Refactor suggestion
Enhance test coverage with additional scenarios.
While the tests cover basic functionality, consider adding tests for edge cases and error conditions, such as:
- Testing behavior when locks are contended.
- Verifying that timeouts occur as expected.
- Testing with
!Sendand!Synctypes if applicable.
Add tests that simulate multiple concurrent tasks attempting to acquire the locks and verify correct behavior under contention.
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #1001 +/- ##
==========================================
+ Coverage 19.49% 19.96% +0.46%
==========================================
Files 412 413 +1
Lines 34237 34441 +204
==========================================
+ Hits 6676 6875 +199
- Misses 27561 27566 +5 ☔ View full report in Codecov by Sentry. |
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Actionable comments posted: 3
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📒 Files selected for processing (1)
- rocketmq/src/rocketmq_tokio_lock.rs (1 hunks)
🧰 Additional context used
GitHub Check: codecov/patch
rocketmq/src/rocketmq_tokio_lock.rs
[warning] 85-85: rocketmq/src/rocketmq_tokio_lock.rs#L85
Added line #L85 was not covered by tests
[warning] 98-98: rocketmq/src/rocketmq_tokio_lock.rs#L98
Added line #L98 was not covered by tests
[warning] 284-284: rocketmq/src/rocketmq_tokio_lock.rs#L284
Added line #L284 was not covered by tests
[warning] 309-309: rocketmq/src/rocketmq_tokio_lock.rs#L309
Added line #L309 was not covered by tests
🔇 Additional comments not posted (1)
rocketmq/src/rocketmq_tokio_lock.rs (1)
1-381: Overall, well-implemented synchronization primitives with room for minor improvements.The implementation of
RocketMQTokioRwLockandRocketMQTokioMutexis generally well-structured and provides a good abstraction over Tokio's synchronization primitives. The code is clean, well-documented, and includes a comprehensive test suite.Key strengths:
- Proper use of Tokio's async primitives.
- Comprehensive API covering various locking scenarios.
- Use of
?Sizedfor flexibility with dynamically sized types.- Extensive test coverage for both normal and edge cases.
Areas for improvement:
- Enhanced error handling in
try_*methods to provide more detailed error information.- More robust concurrent tests to reduce the likelihood of flaky tests.
- Improved code coverage for error handling branches.
Addressing these points will further enhance the quality and reliability of the implementation.
🧰 Tools
GitHub Check: codecov/patch
[warning] 85-85: rocketmq/src/rocketmq_tokio_lock.rs#L85
Added line #L85 was not covered by tests
[warning] 98-98: rocketmq/src/rocketmq_tokio_lock.rs#L98
Added line #L98 was not covered by tests
[warning] 284-284: rocketmq/src/rocketmq_tokio_lock.rs#L284
Added line #L284 was not covered by tests
[warning] 309-309: rocketmq/src/rocketmq_tokio_lock.rs#L309
Added line #L309 was not covered by tests
| pub async fn try_read(&self) -> Option<tokio::sync::RwLockReadGuard<'_, T>> { | ||
| match self.lock.try_read() { | ||
| Ok(guard) => Some(guard), | ||
| Err(_) => None, | ||
| } | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider enhancing error handling in try_* methods.
The current implementation of try_read, try_write, try_read_timeout, and try_write_timeout methods converts all errors to None. While this simplifies the API, it might hide useful information about why the operation failed (e.g., timeout vs. other errors).
Consider returning a Result type instead of Option for these methods. This would allow callers to distinguish between different error cases. For example:
pub async fn try_read(&self) -> Result<tokio::sync::RwLockReadGuard<'_, T>, TryLockError> {
self.lock.try_read()
}
pub async fn try_read_timeout(
&self,
timeout: Duration,
) -> Result<tokio::sync::RwLockReadGuard<'_, T>, tokio::time::error::Elapsed> {
tokio::time::timeout(timeout, self.lock.read()).await
}This change would provide more detailed error information to the caller, allowing for more sophisticated error handling if needed.
Also applies to: 95-100, 116-119, 136-139
🧰 Tools
GitHub Check: codecov/patch
[warning] 85-85: rocketmq/src/rocketmq_tokio_lock.rs#L85
Added line #L85 was not covered by tests
| async fn try_read_timeout_fails_after_timeout() { | ||
| let lock = Arc::new(RocketMQTokioRwLock::new(5)); | ||
| let arc = lock.clone(); | ||
| let (tx, rx) = tokio::sync::oneshot::channel(); | ||
| tokio::spawn(async move { | ||
| let _read_guard = lock.write().await; | ||
| tx.send(()).unwrap(); | ||
| tokio::time::sleep(Duration::from_millis(10)).await; | ||
| drop(_read_guard); | ||
| }); | ||
| rx.await.unwrap(); | ||
| let read_guard = arc.try_read_timeout(Duration::from_millis(2)).await; | ||
| assert!(read_guard.is_none()); | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Improve robustness of concurrent tests.
Some of the tests that involve concurrent operations (e.g., try_read_timeout_fails_after_timeout, try_write_timeout_fails_after_timeout, try_lock_returns_none_if_unavailable, try_lock_timeout_fails_after_timeout) rely on sleep durations to simulate timeouts. This approach can lead to flaky tests on slower machines or under high system load.
Consider using synchronization primitives like Barrier or additional channels to ensure that the lock is held before attempting to acquire it in the main test thread. This will make the tests more deterministic and less likely to fail due to timing issues. For example:
#[tokio::test]
async fn try_read_timeout_fails_after_timeout() {
let lock = Arc::new(RocketMQTokioRwLock::new(5));
let arc = lock.clone();
let (tx, rx) = tokio::sync::oneshot::channel();
let (lock_acquired_tx, lock_acquired_rx) = tokio::sync::oneshot::channel();
tokio::spawn(async move {
let _read_guard = lock.write().await;
lock_acquired_tx.send(()).unwrap();
tx.send(()).unwrap();
tokio::time::sleep(Duration::from_millis(100)).await;
});
lock_acquired_rx.await.unwrap(); // Ensure the lock is held
rx.await.unwrap();
let read_guard = arc.try_read_timeout(Duration::from_millis(50)).await;
assert!(read_guard.is_none());
}This change will make the tests more reliable and less dependent on specific timing.
Also applies to: 301-314, 343-356, 366-380
🧰 Tools
GitHub Check: codecov/patch
[warning] 284-284: rocketmq/src/rocketmq_tokio_lock.rs#L284
Added line #L284 was not covered by tests
| pub async fn try_read(&self) -> Option<tokio::sync::RwLockReadGuard<'_, T>> { | ||
| match self.lock.try_read() { | ||
| Ok(guard) => Some(guard), | ||
| Err(_) => None, |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Address uncovered code in error handling.
The static analysis tool indicates that some error handling branches are not covered by tests:
- Line 85:
Err(_) => None,intry_read - Line 98:
Err(_) => None,intry_write - Line 284:
drop(_read_guard);intry_read_timeout_fails_after_timeout - Line 309:
drop(write_guard);intry_write_timeout_fails_after_timeout
To improve code coverage:
- Add tests that trigger the error conditions in
try_readandtry_write. - Ensure that the
dropstatements are executed in the timeout tests by using a smaller sleep duration or a synchronization primitive as suggested in the previous comment.
For example, to test the error case in try_read:
#[tokio::test]
async fn try_read_returns_none_when_write_locked() {
let lock = RocketMQTokioRwLock::new(5);
let _write_guard = lock.write().await;
let read_result = lock.try_read().await;
assert!(read_result.is_none());
}Adding these tests will improve the overall robustness of the code and ensure that all paths are properly tested.
Also applies to: 98-98, 284-284, 309-309
🧰 Tools
GitHub Check: codecov/patch
[warning] 85-85: rocketmq/src/rocketmq_tokio_lock.rs#L85
Added line #L85 was not covered by tests
Which Issue(s) This PR Fixes(Closes)
Fixes #1000
Brief Description
How Did You Test This Change?
Summary by CodeRabbit
New Features
rocketmq_tokio_lock.RocketMQTokioMutexfor exclusive access control.RocketMQTokioRwLockfor concurrent read and write access, with timeout options.Bug Fixes