Advanced Query Processing Architecture #7
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…7534) * Loki query splitting: interpolate queries before execution * Update tests * Prettier * shardQuerySplitting: remove unnecessary call
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| const queries = request.targets | ||
| .filter((query) => !query.hide) | ||
| .filter((query) => query.expr) | ||
| .map((query) => datasource.applyTemplateVariables(query, request.scopedVars, request.filters)); |
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Interpolating after filtering can allow queries whose expr becomes empty post-replacement to slip through; consider re-filtering after .map(...) (or interpolate before filtering) to avoid executing empty expressions. This prevents invalid requests when a placeholder like $var resolves to an empty string.
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| .filter((query) => query.expr) | ||
| .filter((query) => !query.hide); | ||
| .filter((query) => !query.hide) | ||
| .map((query) => datasource.applyTemplateVariables(query, request.scopedVars, request.filters)); |
There was a problem hiding this comment.
Same concern as in runSplitQuery: if expr becomes empty after applyTemplateVariables, it will pass the pre-map filters; consider re-filtering after .map(...) (or interpolate before filtering) to avoid sending empty expressions. (Related to the similar change in querySplitting.ts.)
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