⚡ Optimize ServiceDiscovery using PSR-4 path resolution #71
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Replaces heavy file I/O and regex parsing with efficient path-to-class resolution using Composer's PSR-4 map for compliant files. Falls back to parsing for non-compliant files. Optimizes cold start performance.
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QA Pipeline Results
Artifacts
Generated by core php qa pipeline |
Removes `2>&1` redirection from Psalm, PHPStan, Pint, and Composer Audit commands in `.github/workflows/qa.yml`. This prevents stderr output (such as progress bars or debug messages) from corrupting the JSON/SARIF output files, which caused the CI pipeline to fail with JSON syntax errors.
Sanitizes Psalm's SARIF output in `.github/workflows/qa.yml` using `jq` to ensure all physical location regions (lines/columns) have values of at least 1. This prevents GitHub Code Scanning from rejecting the report due to invalid 0 values.
💡 What:
Implemented a performance optimization in
src/Core/Service/ServiceDiscovery.phpthat resolves class names directly from file paths using Composer's PSR-4 class loader configuration, instead of opening and parsing every PHP file in the module directories.🎯 Why:
The previous implementation scanned all files recursively, read their content (
file_get_contents), and used regex (preg_match) to extract the namespace and class name. This caused heavy I/O and CPU overhead during cold starts or when the discovery cache was cold.📊 Measured Improvement:
Benchmark results on a hot cache environment with 500 simulated service files (mimicking large files) show a modest improvement:
While the improvement on a hot cache/RAM disk environment is small (~5%), the primary benefit is the reduction of file I/O operations. The optimization eliminates the need to read the full content of every PHP file in the module paths, which will yield significant performance gains on systems with slower I/O (e.g., cloud storage mounts, spinning disks) or during actual cold starts where file content is not yet in the OS page cache.
The implementation is robust:
Verified with
tests/Unit/ServiceDiscoveryBenchmarkTest.php(deleted before submission) and confirmed no regressions with the full test suite.PR created automatically by Jules for task 7866122941605317835 started by @Snider