# Grafana datasource provisioning — Prometheus (default), Loki, Tempo, wired for
# trace <-> log <-> metric correlation. Copied to
# /etc/grafana/provisioning/datasources/ by install.sh.
apiVersion: 1

datasources:
  - name: Prometheus
    type: prometheus
    uid: prometheus
    access: proxy
    url: http://localhost:9090
    isDefault: true
    jsonData:
      httpMethod: POST

  - name: Loki
    type: loki
    uid: loki
    access: proxy
    url: http://localhost:3100
    jsonData:
      # Turn a trace_id found on a log line into a clickable jump to the trace in Tempo.
      # OTLP logs carry the id as structured metadata `trace_id`; adjust the regex if your
      # app instrumentation emits it differently.
      derivedFields:
        - name: TraceID
          matcherType: label
          matcherRegex: trace_id
          datasourceUid: tempo
          url: "${__value.raw}"
          urlDisplayLabel: "View trace"

  - name: Tempo
    type: tempo
    uid: tempo
    access: proxy
    url: http://localhost:3200
    jsonData:
      # Span -> related logs in Loki.
      tracesToLogsV2:
        datasourceUid: loki
        spanStartTimeShift: "-1h"
        spanEndTimeShift: "1h"
        filterByTraceID: true
        filterBySpanID: false
      # Span -> RED metrics in Prometheus (from Tempo's metrics_generator).
      tracesToMetrics:
        datasourceUid: prometheus
      # Service graph + node graph from the generator's service-graph metrics.
      serviceMap:
        datasourceUid: prometheus
      nodeGraph:
        enabled: true