fix(metrics): fallback to mock writer on file open failure to prevent panic#596
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abhaygoudannavar wants to merge 2 commits intourunc-dev:mainfrom
Open
fix(metrics): fallback to mock writer on file open failure to prevent panic#596abhaygoudannavar wants to merge 2 commits intourunc-dev:mainfrom
abhaygoudannavar wants to merge 2 commits intourunc-dev:mainfrom
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When timestamps are enabled but the target file cannot be opened (e.g. missing directory), NewZerologMetrics returned nil. This caused a nil pointer dereference on subsequent metrics.Capture() calls. This fix gracefully degrades to a no-op mockWriter and logs a warning. Signed-off-by: abhaygoudannavar <abhaysgoudnvr@gmail.com>
Added TestZerologMetricsInvalidFileDoesNotPanic to ensure that if the metrics log file cannot be opened, it gracefully degrades instead of causing a nil pointer dereference. Signed-off-by: abhaygoudannavar <abhaysgoudnvr@gmail.com>
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@cmainas are there any changes needed in this PR? |
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Description
This PR fixes a critical nil pointer dereference crash in the metrics initialization process.
When
[timestamps]are enabled in the/etc/urunc/config.tomlconfiguration but the target file path is invalid (e.g., the parent directory does not exist or has bad permissions),NewZerologMetricspreviously returnednil. Because the caller inmain.goassigned this directly to the globalmetricsvariable without a nil check, the very firstmetrics.Capture()call resulted in a silent crash on startup.Changes included:
NewZerologMetricsnow catches the file open error, logs a warning vialogrus, and returns a safe, no-opmockWriterinstead ofnil.TestZerologMetricsInvalidFileDoesNotPanictometrics_test.goto explicitly test the invalid path scenario and ensureCapture()can be called safely without panicking.Screenshots
Fixes: #595
LLM usage
No LLM usage
Checklist
make lint)make unittest)git commit -s)