some code cleanup #223
some code cleanup #223
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Comments suppressed due to low confidence (2)
healthcheck_rs/src/main.rs:177
- The function documentation should be updated to reflect the new function signature that takes a &str instead of a String.
fn get_status_from_master(_db_info: &str) -> Result<bool, redis::RedisError> {
healthcheck_rs/src/main.rs:226
- [nitpick] The error message could be more descriptive to provide better context.
assert!(resolved, "Failed to resolve host: {host}");
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Actionable comments posted: 1
🧹 Nitpick comments (5)
healthcheck_rs/src/main.rs (5)
31-33: Check for potential parsing errors.
When retrieving environment variables for ports, consider parsing them into integers to catch invalid port values early rather than defaulting silently to a string.-let port = if is_sentinel { - env::var("HEALTH_CHECK_PORT_SENTINEL").unwrap_or_else(|_| "8082".to_string()) -} else { - env::var("HEALTH_CHECK_PORT").unwrap_or_else(|_| "8081".to_string()) -}; +let port = { + let port_str = if is_sentinel { + env::var("HEALTH_CHECK_PORT_SENTINEL").unwrap_or_else(|_| "8082".to_string()) + } else { + env::var("HEALTH_CHECK_PORT").unwrap_or_else(|_| "8081".to_string()) + }; + port_str.parse::<u16>().unwrap_or_else(|_| { + eprintln!("Invalid port provided in environment variable; defaulting to 8081"); + 8081 + }) +};
36-36: Consider binding to “0.0.0.0” instead of “localhost”.
When hosting in a container or on different environments, binding to “0.0.0.0” makes the service more accessible from the network.
104-104: Defaulting to “localhost” is safe but might cause confusion.
When TLS var is missing, the service uses “localhost”. Clarify in docs or logs that this is the fallback behavior.
165-177: Master-node check stub is minimal but correct.
For future improvements, consider validating additional master state fields to ensure readiness under more complex scenarios.
201-226: Host resolution retry strategy is effective but could be optimized.
The 300-second timeout with 1-second intervals is significant. Consider reducing the interval or implementing exponential backoff if speed or resource usage is critical. Also, validate that 300 seconds is safe to block.
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healthcheck_rs/src/main.rs(5 hunks)
🔇 Additional comments (8)
healthcheck_rs/src/main.rs (8)
6-6: Consider verifying if thetime-related usage meets performance requirements.
ImportingDurationandInstantis appropriate for your timeout logic, but ensure these do not negatively impact tight loops elsewhere in the code.
18-29: Documentation enhancements look good.
The doc comments are clearly explaining the purpose, behavior, and usage of the function. These changes improve the code readability significantly.
58-85: Comprehensive documentation is great, but ensure it stays current.
These doc comments thoroughly detail how thehealth_check_handlerfunction uses environment variables. Just watch for drift if the environment variable usage changes over time.
89-91: Environment variable usage is consistent.
The logic for derivingnode_portorSENTINEL_PORTis straightforward and aligns with the existing approach. No immediate concerns.
99-101: Verifying TLS usage for external hosts.
Resolving the host for TLS is a good step. If non-local hosts are also used in non-TLS mode, consider consistently resolving as well to avoid potential DNS issues.
133-135: Master/slave role checks are correct.
The fallback toget_status_from_masterorget_status_from_slaveis straightforward. This logic is concise and maintainable.
139-155: Cluster node status checks are well-documented.
Implementation is minimal but effective. Keep an eye on potential changes in future Redis cluster versions that might alterCLUSTER INFOoutputs.
181-193: Slave readiness check is straightforward.
The code correctly checksmaster_link_statusandmaster_sync_in_progress. This is aligned with typical Redis readiness logic. Good job.
| std::fs::read_to_string(path) | ||
| .map(|s| s.trim().to_string()) | ||
| .unwrap_or_else(|_| String::new()) | ||
| } |
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🛠️ Refactor suggestion
Handle possible file I/O errors securely.
Reading from /run/secrets/adminpassword is valid, but failing to read might leave the password empty. Consider logging or returning an error if the file cannot be read as expected.
- .unwrap_or_else(|_| String::new())
+ .unwrap_or_else(|e| {
+ eprintln!("Failed to read admin password file: {}", e);
+ String::new()
+ })📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| std::fs::read_to_string(path) | |
| .map(|s| s.trim().to_string()) | |
| .unwrap_or_else(|_| String::new()) | |
| } | |
| std::fs::read_to_string(path) | |
| .map(|s| s.trim().to_string()) | |
| .unwrap_or_else(|e| { | |
| eprintln!("Failed to read admin password file: {}", e); | |
| String::new() | |
| }) |
Summary by CodeRabbit
Documentation
Refactor
Performance