move pooler metrics to injector

library/common/templates/class/_cnpgPooler.tpl

@@ -28,19 +28,5 @@ spec:
     parameters:
       max_client_conn: "1000"
       default_pool_size: "10"
-{{- if $values.monitoring }}
-{{- if $values.monitoring.enablePodMonitor }}
----
-apiVersion: monitoring.coreos.com/v1
-kind: PodMonitor
-metadata:
-  name: {{ printf "%v-%v" $cnpgClusterName $values.pooler.type }}
-spec:
-  selector:
-    matchLabels:
-      cnpg.io/poolerName: {{ printf "%v-%v" $cnpgClusterName $values.pooler.type }}
-  podMetricsEndpoints:
-  - port: metrics
-{{- end }}
-{{- end }}
+
 {{- end -}}

library/common/templates/lib/cnpg/_poolerMetrics.tpl

@@ -0,0 +1,9 @@
+{{- define "tc.v1.common.lib.cnpg.metrics.pooler" -}}
+enabled: true
+type: "podmonitor"
+selector:
+  matchLabels:
+    cnpg.io/poolerName: {{ .poolerName }}
+endpoints:
+- port: metrics
+{{- end }}

library/common/templates/lib/util/_primary_metrics.tpl

@@ -24,10 +24,6 @@
   {{- if not $result -}}
     {{- if eq (len $enabledMetrics) 1 -}}
       {{- $result = keys $enabledMetrics | mustFirst -}}
-    {{- else -}}
-      {{- if $enabledMetrics -}}
-        {{- fail "At least one Metric must be set as primary" -}}
-      {{- end -}}
     {{- end -}}
   {{- end -}}
   {{- $result -}}

library/common/templates/spawner/_cnpg.tpl

@@ -72,6 +72,19 @@
     {{- $_ := set $cnpgValues.creds "host" $host }}
     {{- $_ := set $cnpgValues.creds "jdbc" $jdbc }}
 
+
+    {{- if $cnpgValues.monitoring }}
+      {{- if $cnpgValues.monitoring.enablePodMonitor }}
+        {{- $poolermetrics :=  include "tc.v1.common.lib.cnpg.metrics.pooler" (dict "poolerName" ( printf "%s-rw" $cnpgValues.name) ) | fromYaml -}}
+
+        {{- $_ := set $.Values.metrics ( printf "cnpg-%s-rw" $cnpgValues.shortName ) $poolermetrics }}
+        {{- if $cnpgValues.acceptRO }}
+          {{- $poolermetricsRO :=  include "tc.v1.common.lib.cnpg.metrics.pooler" (dict "poolerName" ( printf "%s-ro" $cnpgValues.name) ) | fromYaml -}}
+          {{- $_ := set $.Values.metrics ( printf "cnpg-%s-ro" $cnpgValues.shortName ) $poolermetricsRO }}
+        {{- end }}
+      {{- end }}
+    {{- end }}
+
     {{- end -}}
   {{- end -}}
 {{- end -}}