{{- if and .Values.cluster.monitoring.enabled .Values.cluster.monitoring.prometheusRule.enabled -}}
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: {{ include "cluster.name" . }}-alert-rules
  namespace: {{ .Release.Namespace }}
  labels:
    {{- include "cluster.labels" . | nindent 4 }}
  {{- with .Values.cluster.additionalLabels }}
    {{ toYaml . | nindent 4 }}
  {{- end }}
spec:
  groups:
    - name: cloudnative-pg/{{ include "cluster.name" . }}
      rules:
        {{- $dict := dict "excludeRules" .Values.cluster.monitoring.prometheusRule.excludeRules -}}
        {{- $_ := set $dict "value"       "{{`{{`}} $value {{`}}`}}" -}}
        {{- $_ := set $dict "namespace"   .Release.Namespace -}}
        {{- $_ := set $dict "cluster"     (printf "%s-cluster" (include "cluster.name" .) ) -}}
        {{- $_ := set $dict "labels"      (dict "job" "{{`{{`}} $labels.job {{`}}`}}" "node" "{{`{{`}} $labels.node {{`}}`}}" "pod" "{{`{{`}} $labels.pod {{`}}`}}") -}}
        {{- $_ := set $dict "podSelector" (printf "%s-cluster-([1-9][0-9]*)$" (include "cluster.name" .) ) -}}
        {{- $_ := set $dict "Values"      .Values -}}
        {{- $_ := set $dict "Template"    .Template -}}
        {{- range $path, $_ := .Files.Glob  "prometheus_rules/**.yaml" }}
        {{- $tpl := tpl ($.Files.Get $path) $dict | nindent 10 | trim -}}
        {{- with $tpl }}
        - {{ $tpl }}
        {{- end -}}
        {{- end -}}
    {{- if .Values.cluster.monitoring.prometheusRule.enableDefaultRules }}
    - name: cloudnative-pg/default-rules
      rules:
        - alert: LongRunningTransaction
          annotations:
            description: Pod {{`{{`}} $labels.pod {{`}}`}} is taking more than 5 minutes (300 seconds) for a query.
            summary: A query is taking longer than 5 minutes.
          expr: |-
            cnpg_backends_max_tx_duration_seconds > 300
          for: 1m
          labels:
            severity: warning
        - alert: BackendsWaiting
          annotations:
            description: Pod {{`{{`}} $labels.pod {{`}}`}} has been waiting for longer than 5 minutes
            summary: If a backend is waiting for longer than 5 minutes
          expr: |-
            cnpg_backends_waiting_total > 300
          for: 1m
          labels:
            severity: warning
        - alert: PGDatabaseXidAge
          annotations:
            description: Over 300,000,000 transactions from frozen xid on pod {{`{{`}} $labels.pod {{`}}`}}
            summary: Number of transactions from the frozen XID to the current one
          expr: |-
            cnpg_pg_database_xid_age > 300000000
          for: 1m
          labels:
            severity: warning
        - alert: PGReplication
          annotations:
            description: Standby is lagging behind by over 300 seconds (5 minutes)
            summary: The standby is lagging behind the primary
          expr: |-
            cnpg_pg_replication_lag > 300
          for: 1m
          labels:
            severity: warning
        - alert: LastFailedArchiveTime
          annotations:
            description: Archiving failed for {{`{{`}} $labels.pod {{`}}`}}
            summary: Checks the last time archiving failed. Will be < 0 when it has not failed.
          expr: |-
            (cnpg_pg_stat_archiver_last_failed_time - cnpg_pg_stat_archiver_last_archived_time) > 1
          for: 1m
          labels:
            severity: warning
        - alert: DatabaseDeadlockConflicts
          annotations:
            description: There are over 10 deadlock conflicts in {{`{{`}} $labels.pod {{`}}`}}
            summary: Checks the number of database conflicts
          expr: |-
            cnpg_pg_stat_database_deadlocks > 10
          for: 1m
          labels:
            severity: warning
        - alert: ReplicaFailingReplication
          annotations:
            description: Replica {{`{{`}} $labels.pod {{`}}`}} is failing to replicate
            summary: Checks if the replica is failing to replicate
          expr: |-
            cnpg_pg_replication_in_recovery > cnpg_pg_replication_is_wal_receiver_up
          for: 1m
          labels:
            severity: warning
    {{- end }}
{{ end }}