feat(metrics): add database in-flight operations metrics #220
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Codecov ReportAll modified and coverable lines are covered by tests ✅
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## develop #220 +/- ##
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+ Coverage 68.81% 68.87% +0.06%
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Files 32 32
Lines 7942 7959 +17
Branches 434 434
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+ Hits 5465 5482 +17
Misses 2476 2476
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📝 WalkthroughWalkthroughThe pull request introduces modifications to the Changes
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🧹 Outside diff range and nitpick comments (5)
src/metrics.ts (2)
139-143: LGTM! Consider adding a unit test.The implementation of
sqliteInFlightOpsis well-structured and aligns perfectly with the PR objectives. The use of a Gauge metric is appropriate for tracking in-flight operations, and the label names provide good granularity.To ensure the metric behaves as expected, consider adding a unit test that verifies its functionality. This could involve mocking some SQLite operations and checking if the gauge accurately reflects the number of in-flight operations.
139-143: Consider updating documentation to reflect the new metric.The addition of
sqliteInFlightOpsenhances the monitoring capabilities for SQLite operations without affecting existing functionality. This is a valuable addition to the metrics suite.To ensure that this new metric is utilized effectively, consider updating any relevant documentation or monitoring dashboards to include this new metric. This will help users and operators of the system to be aware of and make use of this new monitoring capability.
src/database/standalone-sqlite.ts (3)
2418-2424: Improved workers object initializationThe new initialization of the
workersobject is more concise and readable. Using empty arrays for each worker type and role is a good practice.Consider using a loop or a helper function to initialize this object, especially if you plan to add more worker types in the future. For example:
this.workers = Object.fromEntries( WORKER_POOL_NAMES.map(pool => [pool, { read: [], write: [] }]) ) as typeof this.workers;This approach would be more scalable and less prone to errors when adding new worker types.
2433-2439: Improved workQueues object initializationThe new initialization of the
workQueuesobject is more concise and readable, similar to theworkersobject improvement.Consider using the same approach suggested for the
workersobject to initializeworkQueues:this.workQueues = Object.fromEntries( WORKER_POOL_NAMES.map(pool => [pool, { read: [], write: [] }]) ) as typeof this.workQueues;This would make the initialization consistent with the
workersobject and more scalable for future additions.
Line range hint
2663-2689: Added SQLite in-flight operations metricsThe addition of metrics to track in-flight SQLite operations is a valuable improvement. It aligns well with the PR objectives and will provide important insights into the database's operational state.
For consistency, consider moving the
finallyblock to a separate function:const decrementMetrics = () => { metrics.sqliteInFlightOps.dec({ worker: workerName, role, }); end(); }; ret.finally(decrementMetrics);This would make the code slightly more readable and easier to maintain if you need to add more cleanup logic in the future.
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📒 Files selected for processing (2)
- src/database/standalone-sqlite.ts (5 hunks)
- src/metrics.ts (1 hunks)
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🔇 Additional comments (1)
src/database/standalone-sqlite.ts (1)
2400-2407: Improved interface implementation syntaxThe change from using a hyphen to a comma-separated list for implementing multiple interfaces is a good improvement. This syntax is more standard in TypeScript and improves code readability. It doesn't affect the functionality of the class but makes the code more maintainable.
Example of metrics: