From 5cd7f67c64e58d4fc6d202e5272c08bceff194d2 Mon Sep 17 00:00:00 2001
From: Alex Layton <alex@layton.in>
Date: Wed, 20 Jul 2022 16:30:21 -0400
Subject: [PATCH] feat(chart): add Prometheus monitors

---
 charts/oada/Chart.yaml                |  4 ++--
 charts/oada/templates/_helpers.tpl    |  5 +++++
 charts/oada/templates/deployment.yaml | 19 +++++++++++++++++++
 charts/oada/values.yaml               |  3 +++
 4 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/charts/oada/Chart.yaml b/charts/oada/Chart.yaml
index 67d30767..e8886e5e 100644
--- a/charts/oada/Chart.yaml
+++ b/charts/oada/Chart.yaml
@@ -8,8 +8,8 @@ maintainers:
   - name: awlayton
     email: alex@layton.in
 type: application
-version: 1.2.4
-appVersion: '3.4.1'
+version: 1.3.0
+appVersion: '3.4.4'
 annotations:
   artifacthub.io/recommendations: |
     - url: https://artifacthub.io/packages/helm/cert-manager/cert-manager
diff --git a/charts/oada/templates/_helpers.tpl b/charts/oada/templates/_helpers.tpl
index 6b779a6f..ee51f866 100644
--- a/charts/oada/templates/_helpers.tpl
+++ b/charts/oada/templates/_helpers.tpl
@@ -50,6 +50,11 @@ app.kubernetes.io/part-of: oada
   {{ .Values.kafka.brokers | join "," | default $brokers }}
 {{- end -}}
 
+{{/* Whether add Prometheus monitors */}}
+{{- define "oada.prometheus" -}}
+  {{ .Values.prometheus | default (.Capabilities.APIVersions.Has "monitoring.coreos.com/v1") }}
+{{- end -}}
+
 {{/* TLS secret */}}
 {{- define "oada.tls" -}}
   tls-{{ .Release.Name }}
diff --git a/charts/oada/templates/deployment.yaml b/charts/oada/templates/deployment.yaml
index cdf05e11..1bc5d8e2 100644
--- a/charts/oada/templates/deployment.yaml
+++ b/charts/oada/templates/deployment.yaml
@@ -136,5 +136,24 @@ spec:
         targetAverageUtilization: {{ $.Values.autoscaling.targetMemoryUtilizationPercentage }}
     {{- end }}
 {{- end }}
+{{- if eq (include "oada.prometheus" $) "true" }}
+---
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  namespace: {{ $.Release.Namespace }}
+  name: {{ $name }}
+  labels:
+    app.kubernetes.io/name: {{ $k }}
+    app.kubernetes.io/instance: {{ $.Release.Name }}
+    {{- include "oada.chart.labels" $ | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ $k }}
+      app.kubernetes.io/instance: {{ $.Release.Name }}
+  podMetricsEndpoints:
+  - port: prometheus
+{{- end }}
 ---
 {{ end -}}
\ No newline at end of file
diff --git a/charts/oada/values.yaml b/charts/oada/values.yaml
index 21dc1909..17c54f87 100644
--- a/charts/oada/values.yaml
+++ b/charts/oada/values.yaml
@@ -71,6 +71,9 @@ k8sWaitFor:
   image: groundnuty/k8s-wait-for
   tag: v1.6
 
+# prometheus is whether to add prometheus monitors for oada
+prometheus: ~
+
 global:
   # global.development is whether to enable development/debug features not meant for production use
   development: false