Prometheus Adapter

@openplait/adapter-prometheus executes bounded /api/v1/query_range requests and normalizes matrix, vector, and scalar responses into timestamp, value, and label fields. The same adapter works with Prometheus-compatible query APIs such as Grafana Mimir.

import { PrometheusAdapter } from "@openplait/adapter-prometheus";

const adapter = new PrometheusAdapter({
  url: "http://localhost:9090",
  allowNativeQueries: true,
  defaultStep: "30s",
  labelFields: { "service.name": "service_name" },
});

const query = {
  apiVersion: "openplait.io/v1alpha1",
  kind: "Query",
  metadata: { name: "request-rate" },
  spec: {
    mode: "native",
    datasource: { kind: "PrometheusDatasource", name: "metrics" },
    native: { language: "promql", statement: 'sum(rate(http_requests_total[5m])) by (service_name)' },
    extensions: {
      "io.openplait.prometheus": {
        timeRange: { from: "2026-08-05T00:00:00Z", to: "2026-08-05T01:00:00Z" },
        step: "30s",
      },
    },
  },
};

Use metricNames(), labelNames(), and labelValues() for discovery-backed query editors. Authentication and tenant behavior is shared with Loki and Tempo.