Refactor source report to use sparse line metrics - #6153
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Replaces fixed-size arrays with a map for per-line metrics in sourceReportBuilder, allowing for sparse line data and adding explicit line_number to the Arrow schema.
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| return array.NewRecordBatch( | ||
| arrow.NewSchema( | ||
| []arrow.Field{ | ||
| {Name: "line_number", Type: arrow.PrimitiveTypes.Int64}, |
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Add the line number as a column in the Arrow schema
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| if err != nil { | ||
| if errors.Is(err, ErrSourceNotFound) || errors.Is(err, ErrNoSourceForBuildID) { | ||
| return nil, status.Error(codes.NotFound, err.Error()) | ||
| source = "" |
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Don't return an error if the source code is not present
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| const flat = table.getChild('flat'); | ||
| return [cumulative, flat]; | ||
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| const metrics = new Map<number, {cumulative: bigint; flat: bigint}>(); |
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We return the record in sorted order, we can just perform a binary search for each row, no? That way, we can also render only the viewport.
I would prefer it if we got into the habit of not copying data returned by the backend (although probably less problematic in this case).
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that makes sense. I can change this
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The source report will no longer return an error if the source file is not present and we also added explicit line numbers to the Arrow schema that is returned. Now, only lines with actual profiling data are included in the response, rather than returning an array with one entry per line in the source file.
Changes:
Backend returns empty source field instead of error when source file is missing
Arrow schema now includes line_number column with explicit line numbers
Response only contains rows for lines with non-zero cumulative or flat values