Prometheus label values API: add plan builder#144956
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felixbarny merged 3 commits intoelastic:mainfrom Mar 26, 2026
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Prometheus label values API: add plan builder#144956felixbarny merged 3 commits intoelastic:mainfrom
felixbarny merged 3 commits intoelastic:mainfrom
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Builds the ESQL query plan for the Prometheus label values API, supporting both the `__name__` special label (via MetricsInfo) and regular label columns.
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This will disappear from the PR once #144493 is merged.
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...etheus/src/main/java/org/elasticsearch/xpack/prometheus/rest/PrometheusPlanBuilderUtils.java
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Builds the ESQL query plan for the Prometheus label values API, supporting both the `__name__` special label (via MetricsInfo) and regular label columns.
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Adds
PrometheusLabelValuesPlanBuilderandPrometheusPlanBuilderUtils, which translate a Prometheus label values API request (label name, match selectors, time range, limit) into aLogicalPlanthat can be executed via ES|QL. The plan builder supports both the__name__special label (viaMetricsInfo) and regular label columns. It is covered by unit tests inPrometheusLabelValuesPlanBuilderTests.This is part of a stack implementing the Prometheus label values API endpoint:
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